Remove libdouble-conversion

We can use facilities in qtbase to convert doubles to strings now.
This also makes the fix to QTBUG-47070 obsolete.

Change-Id: I2f813164ff788b96281c3ffd37d8d2c65665de80
Reviewed-by: Simon Hausmann <simon.hausmann@theqtcompany.com>

20 files changed, 0 insertions, 6146 deletions

diff --git a/src/3rdparty/double-conversion/README b/src/3rdparty/double-conversion/README
deleted file mode 100644
index 3a9733d795..0000000000
--- a/src/3rdparty/double-conversion/README
+++ /dev/null
@@ -1,6 +0,0 @@
-This is a copy of the library for binary-decimal and decimal-binary conversion routines for IEEE doubles, taken
-from
-
-    http://code.google.com/p/double-conversion/
-
-commit 2fb03de56faa32bbba5e02222528e7b760f71d77
diff --git a/src/3rdparty/double-conversion/bignum-dtoa.cc b/src/3rdparty/double-conversion/bignum-dtoa.cc
deleted file mode 100644
index f1ad7a5ae8..0000000000
--- a/src/3rdparty/double-conversion/bignum-dtoa.cc
+++ /dev/null
@@ -1,641 +0,0 @@
-// Copyright 2010 the V8 project authors. All rights reserved.
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-//       notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-//       copyright notice, this list of conditions and the following
-//       disclaimer in the documentation and/or other materials provided
-//       with the distribution.
-//     * Neither the name of Google Inc. nor the names of its
-//       contributors may be used to endorse or promote products derived
-//       from this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-#include <math.h>
-
-#include "bignum-dtoa.h"
-
-#include "bignum.h"
-#include "ieee.h"
-
-namespace double_conversion {
-
-static int NormalizedExponent(uint64_t significand, int exponent) {
-  ASSERT(significand != 0);
-  while ((significand & Double::kHiddenBit) == 0) {
-    significand = significand << 1;
-    exponent = exponent - 1;
-  }
-  return exponent;
-}
-
-
-// Forward declarations:
-// Returns an estimation of k such that 10^(k-1) <= v < 10^k.
-static int EstimatePower(int exponent);
-// Computes v / 10^estimated_power exactly, as a ratio of two bignums, numerator
-// and denominator.
-static void InitialScaledStartValues(uint64_t significand,
-                                     int exponent,
-                                     bool lower_boundary_is_closer,
-                                     int estimated_power,
-                                     bool need_boundary_deltas,
-                                     Bignum* numerator,
-                                     Bignum* denominator,
-                                     Bignum* delta_minus,
-                                     Bignum* delta_plus);
-// Multiplies numerator/denominator so that its values lies in the range 1-10.
-// Returns decimal_point s.t.
-//  v = numerator'/denominator' * 10^(decimal_point-1)
-//     where numerator' and denominator' are the values of numerator and
-//     denominator after the call to this function.
-static void FixupMultiply10(int estimated_power, bool is_even,
-                            int* decimal_point,
-                            Bignum* numerator, Bignum* denominator,
-                            Bignum* delta_minus, Bignum* delta_plus);
-// Generates digits from the left to the right and stops when the generated
-// digits yield the shortest decimal representation of v.
-static void GenerateShortestDigits(Bignum* numerator, Bignum* denominator,
-                                   Bignum* delta_minus, Bignum* delta_plus,
-                                   bool is_even,
-                                   Vector<char> buffer, int* length);
-// Generates 'requested_digits' after the decimal point.
-static void BignumToFixed(int requested_digits, int* decimal_point,
-                          Bignum* numerator, Bignum* denominator,
-                          Vector<char>(buffer), int* length);
-// Generates 'count' digits of numerator/denominator.
-// Once 'count' digits have been produced rounds the result depending on the
-// remainder (remainders of exactly .5 round upwards). Might update the
-// decimal_point when rounding up (for example for 0.9999).
-static void GenerateCountedDigits(int count, int* decimal_point,
-                                  Bignum* numerator, Bignum* denominator,
-                                  Vector<char>(buffer), int* length);
-
-
-void BignumDtoa(double v, BignumDtoaMode mode, int requested_digits,
-                Vector<char> buffer, int* length, int* decimal_point) {
-  ASSERT(v > 0);
-  ASSERT(!Double(v).IsSpecial());
-  uint64_t significand;
-  int exponent;
-  bool lower_boundary_is_closer;
-  if (mode == BIGNUM_DTOA_SHORTEST_SINGLE) {
-    float f = static_cast<float>(v);
-    ASSERT(f == v);
-    significand = Single(f).Significand();
-    exponent = Single(f).Exponent();
-    lower_boundary_is_closer = Single(f).LowerBoundaryIsCloser();
-  } else {
-    significand = Double(v).Significand();
-    exponent = Double(v).Exponent();
-    lower_boundary_is_closer = Double(v).LowerBoundaryIsCloser();
-  }
-  bool need_boundary_deltas =
-      (mode == BIGNUM_DTOA_SHORTEST || mode == BIGNUM_DTOA_SHORTEST_SINGLE);
-
-  bool is_even = (significand & 1) == 0;
-  int normalized_exponent = NormalizedExponent(significand, exponent);
-  // estimated_power might be too low by 1.
-  int estimated_power = EstimatePower(normalized_exponent);
-
-  // Shortcut for Fixed.
-  // The requested digits correspond to the digits after the point. If the
-  // number is much too small, then there is no need in trying to get any
-  // digits.
-  if (mode == BIGNUM_DTOA_FIXED && -estimated_power - 1 > requested_digits) {
-    buffer[0] = '\0';
-    *length = 0;
-    // Set decimal-point to -requested_digits. This is what Gay does.
-    // Note that it should not have any effect anyways since the string is
-    // empty.
-    *decimal_point = -requested_digits;
-    return;
-  }
-
-  Bignum numerator;
-  Bignum denominator;
-  Bignum delta_minus;
-  Bignum delta_plus;
-  // Make sure the bignum can grow large enough. The smallest double equals
-  // 4e-324. In this case the denominator needs fewer than 324*4 binary digits.
-  // The maximum double is 1.7976931348623157e308 which needs fewer than
-  // 308*4 binary digits.
-  ASSERT(Bignum::kMaxSignificantBits >= 324*4);
-  InitialScaledStartValues(significand, exponent, lower_boundary_is_closer,
-                           estimated_power, need_boundary_deltas,
-                           &numerator, &denominator,
-                           &delta_minus, &delta_plus);
-  // We now have v = (numerator / denominator) * 10^estimated_power.
-  FixupMultiply10(estimated_power, is_even, decimal_point,
-                  &numerator, &denominator,
-                  &delta_minus, &delta_plus);
-  // We now have v = (numerator / denominator) * 10^(decimal_point-1), and
-  //  1 <= (numerator + delta_plus) / denominator < 10
-  switch (mode) {
-    case BIGNUM_DTOA_SHORTEST:
-    case BIGNUM_DTOA_SHORTEST_SINGLE:
-      GenerateShortestDigits(&numerator, &denominator,
-                             &delta_minus, &delta_plus,
-                             is_even, buffer, length);
-      break;
-    case BIGNUM_DTOA_FIXED:
-      BignumToFixed(requested_digits, decimal_point,
-                    &numerator, &denominator,
-                    buffer, length);
-      break;
-    case BIGNUM_DTOA_PRECISION:
-      GenerateCountedDigits(requested_digits, decimal_point,
-                            &numerator, &denominator,
-                            buffer, length);
-      break;
-    default:
-      UNREACHABLE();
-  }
-  buffer[*length] = '\0';
-}
-
-
-// The procedure starts generating digits from the left to the right and stops
-// when the generated digits yield the shortest decimal representation of v. A
-// decimal representation of v is a number lying closer to v than to any other
-// double, so it converts to v when read.
-//
-// This is true if d, the decimal representation, is between m- and m+, the
-// upper and lower boundaries. d must be strictly between them if !is_even.
-//           m- := (numerator - delta_minus) / denominator
-//           m+ := (numerator + delta_plus) / denominator
-//
-// Precondition: 0 <= (numerator+delta_plus) / denominator < 10.
-//   If 1 <= (numerator+delta_plus) / denominator < 10 then no leading 0 digit
-//   will be produced. This should be the standard precondition.
-static void GenerateShortestDigits(Bignum* numerator, Bignum* denominator,
-                                   Bignum* delta_minus, Bignum* delta_plus,
-                                   bool is_even,
-                                   Vector<char> buffer, int* length) {
-  // Small optimization: if delta_minus and delta_plus are the same just reuse
-  // one of the two bignums.
-  if (Bignum::Equal(*delta_minus, *delta_plus)) {
-    delta_plus = delta_minus;
-  }
-  *length = 0;
-  for (;;) {
-    uint16_t digit;
-    digit = numerator->DivideModuloIntBignum(*denominator);
-    ASSERT(digit <= 9);  // digit is a uint16_t and therefore always positive.
-    // digit = numerator / denominator (integer division).
-    // numerator = numerator % denominator.
-    buffer[(*length)++] = static_cast<char>(digit + '0');
-
-    // Can we stop already?
-    // If the remainder of the division is less than the distance to the lower
-    // boundary we can stop. In this case we simply round down (discarding the
-    // remainder).
-    // Similarly we test if we can round up (using the upper boundary).
-    bool in_delta_room_minus;
-    bool in_delta_room_plus;
-    if (is_even) {
-      in_delta_room_minus = Bignum::LessEqual(*numerator, *delta_minus);
-    } else {
-      in_delta_room_minus = Bignum::Less(*numerator, *delta_minus);
-    }
-    if (is_even) {
-      in_delta_room_plus =
-          Bignum::PlusCompare(*numerator, *delta_plus, *denominator) >= 0;
-    } else {
-      in_delta_room_plus =
-          Bignum::PlusCompare(*numerator, *delta_plus, *denominator) > 0;
-    }
-    if (!in_delta_room_minus && !in_delta_room_plus) {
-      // Prepare for next iteration.
-      numerator->Times10();
-      delta_minus->Times10();
-      // We optimized delta_plus to be equal to delta_minus (if they share the
-      // same value). So don't multiply delta_plus if they point to the same
-      // object.
-      if (delta_minus != delta_plus) {
-        delta_plus->Times10();
-      }
-    } else if (in_delta_room_minus && in_delta_room_plus) {
-      // Let's see if 2*numerator < denominator.
-      // If yes, then the next digit would be < 5 and we can round down.
-      int compare = Bignum::PlusCompare(*numerator, *numerator, *denominator);
-      if (compare < 0) {
-        // Remaining digits are less than .5. -> Round down (== do nothing).
-      } else if (compare > 0) {
-        // Remaining digits are more than .5 of denominator. -> Round up.
-        // Note that the last digit could not be a '9' as otherwise the whole
-        // loop would have stopped earlier.
-        // We still have an assert here in case the preconditions were not
-        // satisfied.
-        ASSERT(buffer[(*length) - 1] != '9');
-        buffer[(*length) - 1]++;
-      } else {
-        // Halfway case.
-        // TODO(floitsch): need a way to solve half-way cases.
-        //   For now let's round towards even (since this is what Gay seems to
-        //   do).
-
-        if ((buffer[(*length) - 1] - '0') % 2 == 0) {
-          // Round down => Do nothing.
-        } else {
-          ASSERT(buffer[(*length) - 1] != '9');
-          buffer[(*length) - 1]++;
-        }
-      }
-      return;
-    } else if (in_delta_room_minus) {
-      // Round down (== do nothing).
-      return;
-    } else {  // in_delta_room_plus
-      // Round up.
-      // Note again that the last digit could not be '9' since this would have
-      // stopped the loop earlier.
-      // We still have an ASSERT here, in case the preconditions were not
-      // satisfied.
-      ASSERT(buffer[(*length) -1] != '9');
-      buffer[(*length) - 1]++;
-      return;
-    }
-  }
-}
-
-
-// Let v = numerator / denominator < 10.
-// Then we generate 'count' digits of d = x.xxxxx... (without the decimal point)
-// from left to right. Once 'count' digits have been produced we decide wether
-// to round up or down. Remainders of exactly .5 round upwards. Numbers such
-// as 9.999999 propagate a carry all the way, and change the
-// exponent (decimal_point), when rounding upwards.
-static void GenerateCountedDigits(int count, int* decimal_point,
-                                  Bignum* numerator, Bignum* denominator,
-                                  Vector<char> buffer, int* length) {
-  ASSERT(count >= 0);
-  for (int i = 0; i < count - 1; ++i) {
-    uint16_t digit;
-    digit = numerator->DivideModuloIntBignum(*denominator);
-    ASSERT(digit <= 9);  // digit is a uint16_t and therefore always positive.
-    // digit = numerator / denominator (integer division).
-    // numerator = numerator % denominator.
-    buffer[i] = static_cast<char>(digit + '0');
-    // Prepare for next iteration.
-    numerator->Times10();
-  }
-  // Generate the last digit.
-  uint16_t digit;
-  digit = numerator->DivideModuloIntBignum(*denominator);
-  if (Bignum::PlusCompare(*numerator, *numerator, *denominator) >= 0) {
-    digit++;
-  }
-  ASSERT(digit <= 10);
-  buffer[count - 1] = static_cast<char>(digit + '0');
-  // Correct bad digits (in case we had a sequence of '9's). Propagate the
-  // carry until we hat a non-'9' or til we reach the first digit.
-  for (int i = count - 1; i > 0; --i) {
-    if (buffer[i] != '0' + 10) break;
-    buffer[i] = '0';
-    buffer[i - 1]++;
-  }
-  if (buffer[0] == '0' + 10) {
-    // Propagate a carry past the top place.
-    buffer[0] = '1';
-    (*decimal_point)++;
-  }
-  *length = count;
-}
-
-
-// Generates 'requested_digits' after the decimal point. It might omit
-// trailing '0's. If the input number is too small then no digits at all are
-// generated (ex.: 2 fixed digits for 0.00001).
-//
-// Input verifies:  1 <= (numerator + delta) / denominator < 10.
-static void BignumToFixed(int requested_digits, int* decimal_point,
-                          Bignum* numerator, Bignum* denominator,
-                          Vector<char>(buffer), int* length) {
-  // Note that we have to look at more than just the requested_digits, since
-  // a number could be rounded up. Example: v=0.5 with requested_digits=0.
-  // Even though the power of v equals 0 we can't just stop here.
-  if (-(*decimal_point) > requested_digits) {
-    // The number is definitively too small.
-    // Ex: 0.001 with requested_digits == 1.
-    // Set decimal-point to -requested_digits. This is what Gay does.
-    // Note that it should not have any effect anyways since the string is
-    // empty.
-    *decimal_point = -requested_digits;
-    *length = 0;
-    return;
-  } else if (-(*decimal_point) == requested_digits) {
-    // We only need to verify if the number rounds down or up.
-    // Ex: 0.04 and 0.06 with requested_digits == 1.
-    ASSERT(*decimal_point == -requested_digits);
-    // Initially the fraction lies in range (1, 10]. Multiply the denominator
-    // by 10 so that we can compare more easily.
-    denominator->Times10();
-    if (Bignum::PlusCompare(*numerator, *numerator, *denominator) >= 0) {
-      // If the fraction is >= 0.5 then we have to include the rounded
-      // digit.
-      buffer[0] = '1';
-      *length = 1;
-      (*decimal_point)++;
-    } else {
-      // Note that we caught most of similar cases earlier.
-      *length = 0;
-    }
-    return;
-  } else {
-    // The requested digits correspond to the digits after the point.
-    // The variable 'needed_digits' includes the digits before the point.
-    int needed_digits = (*decimal_point) + requested_digits;
-    GenerateCountedDigits(needed_digits, decimal_point,
-                          numerator, denominator,
-                          buffer, length);
-  }
-}
-
-
-// Returns an estimation of k such that 10^(k-1) <= v < 10^k where
-// v = f * 2^exponent and 2^52 <= f < 2^53.
-// v is hence a normalized double with the given exponent. The output is an
-// approximation for the exponent of the decimal approimation .digits * 10^k.
-//
-// The result might undershoot by 1 in which case 10^k <= v < 10^k+1.
-// Note: this property holds for v's upper boundary m+ too.
-//    10^k <= m+ < 10^k+1.
-//   (see explanation below).
-//
-// Examples:
-//  EstimatePower(0)   => 16
-//  EstimatePower(-52) => 0
-//
-// Note: e >= 0 => EstimatedPower(e) > 0. No similar claim can be made for e<0.
-static int EstimatePower(int exponent) {
-  // This function estimates log10 of v where v = f*2^e (with e == exponent).
-  // Note that 10^floor(log10(v)) <= v, but v <= 10^ceil(log10(v)).
-  // Note that f is bounded by its container size. Let p = 53 (the double's
-  // significand size). Then 2^(p-1) <= f < 2^p.
-  //
-  // Given that log10(v) == log2(v)/log2(10) and e+(len(f)-1) is quite close
-  // to log2(v) the function is simplified to (e+(len(f)-1)/log2(10)).
-  // The computed number undershoots by less than 0.631 (when we compute log3
-  // and not log10).
-  //
-  // Optimization: since we only need an approximated result this computation
-  // can be performed on 64 bit integers. On x86/x64 architecture the speedup is
-  // not really measurable, though.
-  //
-  // Since we want to avoid overshooting we decrement by 1e10 so that
-  // floating-point imprecisions don't affect us.
-  //
-  // Explanation for v's boundary m+: the computation takes advantage of
-  // the fact that 2^(p-1) <= f < 2^p. Boundaries still satisfy this requirement
-  // (even for denormals where the delta can be much more important).
-
-  const double k1Log10 = 0.30102999566398114;  // 1/lg(10)
-
-  // For doubles len(f) == 53 (don't forget the hidden bit).
-  const int kSignificandSize = Double::kSignificandSize;
-  double estimate = ceil((exponent + kSignificandSize - 1) * k1Log10 - 1e-10);
-  return static_cast<int>(estimate);
-}
-
-
-// See comments for InitialScaledStartValues.
-static void InitialScaledStartValuesPositiveExponent(
-    uint64_t significand, int exponent,
-    int estimated_power, bool need_boundary_deltas,
-    Bignum* numerator, Bignum* denominator,
-    Bignum* delta_minus, Bignum* delta_plus) {
-  // A positive exponent implies a positive power.
-  ASSERT(estimated_power >= 0);
-  // Since the estimated_power is positive we simply multiply the denominator
-  // by 10^estimated_power.
-
-  // numerator = v.
-  numerator->AssignUInt64(significand);
-  numerator->ShiftLeft(exponent);
-  // denominator = 10^estimated_power.
-  denominator->AssignPowerUInt16(10, estimated_power);
-
-  if (need_boundary_deltas) {
-    // Introduce a common denominator so that the deltas to the boundaries are
-    // integers.
-    denominator->ShiftLeft(1);
-    numerator->ShiftLeft(1);
-    // Let v = f * 2^e, then m+ - v = 1/2 * 2^e; With the common
-    // denominator (of 2) delta_plus equals 2^e.
-    delta_plus->AssignUInt16(1);
-    delta_plus->ShiftLeft(exponent);
-    // Same for delta_minus. The adjustments if f == 2^p-1 are done later.
-    delta_minus->AssignUInt16(1);
-    delta_minus->ShiftLeft(exponent);
-  }
-}
-
-
-// See comments for InitialScaledStartValues
-static void InitialScaledStartValuesNegativeExponentPositivePower(
-    uint64_t significand, int exponent,
-    int estimated_power, bool need_boundary_deltas,
-    Bignum* numerator, Bignum* denominator,
-    Bignum* delta_minus, Bignum* delta_plus) {
-  // v = f * 2^e with e < 0, and with estimated_power >= 0.
-  // This means that e is close to 0 (have a look at how estimated_power is
-  // computed).
-
-  // numerator = significand
-  //  since v = significand * 2^exponent this is equivalent to
-  //  numerator = v * / 2^-exponent
-  numerator->AssignUInt64(significand);
-  // denominator = 10^estimated_power * 2^-exponent (with exponent < 0)
-  denominator->AssignPowerUInt16(10, estimated_power);
-  denominator->ShiftLeft(-exponent);
-
-  if (need_boundary_deltas) {
-    // Introduce a common denominator so that the deltas to the boundaries are
-    // integers.
-    denominator->ShiftLeft(1);
-    numerator->ShiftLeft(1);
-    // Let v = f * 2^e, then m+ - v = 1/2 * 2^e; With the common
-    // denominator (of 2) delta_plus equals 2^e.
-    // Given that the denominator already includes v's exponent the distance
-    // to the boundaries is simply 1.
-    delta_plus->AssignUInt16(1);
-    // Same for delta_minus. The adjustments if f == 2^p-1 are done later.
-    delta_minus->AssignUInt16(1);
-  }
-}
-
-
-// See comments for InitialScaledStartValues
-static void InitialScaledStartValuesNegativeExponentNegativePower(
-    uint64_t significand, int exponent,
-    int estimated_power, bool need_boundary_deltas,
-    Bignum* numerator, Bignum* denominator,
-    Bignum* delta_minus, Bignum* delta_plus) {
-  // Instead of multiplying the denominator with 10^estimated_power we
-  // multiply all values (numerator and deltas) by 10^-estimated_power.
-
-  // Use numerator as temporary container for power_ten.
-  Bignum* power_ten = numerator;
-  power_ten->AssignPowerUInt16(10, -estimated_power);
-
-  if (need_boundary_deltas) {
-    // Since power_ten == numerator we must make a copy of 10^estimated_power
-    // before we complete the computation of the numerator.
-    // delta_plus = delta_minus = 10^estimated_power
-    delta_plus->AssignBignum(*power_ten);
-    delta_minus->AssignBignum(*power_ten);
-  }
-
-  // numerator = significand * 2 * 10^-estimated_power
-  //  since v = significand * 2^exponent this is equivalent to
-  // numerator = v * 10^-estimated_power * 2 * 2^-exponent.
-  // Remember: numerator has been abused as power_ten. So no need to assign it
-  //  to itself.
-  ASSERT(numerator == power_ten);
-  numerator->MultiplyByUInt64(significand);
-
-  // denominator = 2 * 2^-exponent with exponent < 0.
-  denominator->AssignUInt16(1);
-  denominator->ShiftLeft(-exponent);
-
-  if (need_boundary_deltas) {
-    // Introduce a common denominator so that the deltas to the boundaries are
-    // integers.
-    numerator->ShiftLeft(1);
-    denominator->ShiftLeft(1);
-    // With this shift the boundaries have their correct value, since
-    // delta_plus = 10^-estimated_power, and
-    // delta_minus = 10^-estimated_power.
-    // These assignments have been done earlier.
-    // The adjustments if f == 2^p-1 (lower boundary is closer) are done later.
-  }
-}
-
-
-// Let v = significand * 2^exponent.
-// Computes v / 10^estimated_power exactly, as a ratio of two bignums, numerator
-// and denominator. The functions GenerateShortestDigits and
-// GenerateCountedDigits will then convert this ratio to its decimal
-// representation d, with the required accuracy.
-// Then d * 10^estimated_power is the representation of v.
-// (Note: the fraction and the estimated_power might get adjusted before
-// generating the decimal representation.)
-//
-// The initial start values consist of:
-//  - a scaled numerator: s.t. numerator/denominator == v / 10^estimated_power.
-//  - a scaled (common) denominator.
-//  optionally (used by GenerateShortestDigits to decide if it has the shortest
-//  decimal converting back to v):
-//  - v - m-: the distance to the lower boundary.
-//  - m+ - v: the distance to the upper boundary.
-//
-// v, m+, m-, and therefore v - m- and m+ - v all share the same denominator.
-//
-// Let ep == estimated_power, then the returned values will satisfy:
-//  v / 10^ep = numerator / denominator.
-//  v's boundarys m- and m+:
-//    m- / 10^ep == v / 10^ep - delta_minus / denominator
-//    m+ / 10^ep == v / 10^ep + delta_plus / denominator
-//  Or in other words:
-//    m- == v - delta_minus * 10^ep / denominator;
-//    m+ == v + delta_plus * 10^ep / denominator;
-//
-// Since 10^(k-1) <= v < 10^k    (with k == estimated_power)
-//  or       10^k <= v < 10^(k+1)
-//  we then have 0.1 <= numerator/denominator < 1
-//           or    1 <= numerator/denominator < 10
-//
-// It is then easy to kickstart the digit-generation routine.
-//
-// The boundary-deltas are only filled if the mode equals BIGNUM_DTOA_SHORTEST
-// or BIGNUM_DTOA_SHORTEST_SINGLE.
-
-static void InitialScaledStartValues(uint64_t significand,
-                                     int exponent,
-                                     bool lower_boundary_is_closer,
-                                     int estimated_power,
-                                     bool need_boundary_deltas,
-                                     Bignum* numerator,
-                                     Bignum* denominator,
-                                     Bignum* delta_minus,
-                                     Bignum* delta_plus) {
-  if (exponent >= 0) {
-    InitialScaledStartValuesPositiveExponent(
-        significand, exponent, estimated_power, need_boundary_deltas,
-        numerator, denominator, delta_minus, delta_plus);
-  } else if (estimated_power >= 0) {
-    InitialScaledStartValuesNegativeExponentPositivePower(
-        significand, exponent, estimated_power, need_boundary_deltas,
-        numerator, denominator, delta_minus, delta_plus);
-  } else {
-    InitialScaledStartValuesNegativeExponentNegativePower(
-        significand, exponent, estimated_power, need_boundary_deltas,
-        numerator, denominator, delta_minus, delta_plus);
-  }
-
-  if (need_boundary_deltas && lower_boundary_is_closer) {
-    // The lower boundary is closer at half the distance of "normal" numbers.
-    // Increase the common denominator and adapt all but the delta_minus.
-    denominator->ShiftLeft(1);  // *2
-    numerator->ShiftLeft(1);    // *2
-    delta_plus->ShiftLeft(1);   // *2
-  }
-}
-
-
-// This routine multiplies numerator/denominator so that its values lies in the
-// range 1-10. That is after a call to this function we have:
-//    1 <= (numerator + delta_plus) /denominator < 10.
-// Let numerator the input before modification and numerator' the argument
-// after modification, then the output-parameter decimal_point is such that
-//  numerator / denominator * 10^estimated_power ==
-//    numerator' / denominator' * 10^(decimal_point - 1)
-// In some cases estimated_power was too low, and this is already the case. We
-// then simply adjust the power so that 10^(k-1) <= v < 10^k (with k ==
-// estimated_power) but do not touch the numerator or denominator.
-// Otherwise the routine multiplies the numerator and the deltas by 10.
-static void FixupMultiply10(int estimated_power, bool is_even,
-                            int* decimal_point,
-                            Bignum* numerator, Bignum* denominator,
-                            Bignum* delta_minus, Bignum* delta_plus) {
-  bool in_range;
-  if (is_even) {
-    // For IEEE doubles half-way cases (in decimal system numbers ending with 5)
-    // are rounded to the closest floating-point number with even significand.
-    in_range = Bignum::PlusCompare(*numerator, *delta_plus, *denominator) >= 0;
-  } else {
-    in_range = Bignum::PlusCompare(*numerator, *delta_plus, *denominator) > 0;
-  }
-  if (in_range) {
-    // Since numerator + delta_plus >= denominator we already have
-    // 1 <= numerator/denominator < 10. Simply update the estimated_power.
-    *decimal_point = estimated_power + 1;
-  } else {
-    *decimal_point = estimated_power;
-    numerator->Times10();
-    if (Bignum::Equal(*delta_minus, *delta_plus)) {
-      delta_minus->Times10();
-      delta_plus->AssignBignum(*delta_minus);
-    } else {
-      delta_minus->Times10();
-      delta_plus->Times10();
-    }
-  }
-}
-
-}  // namespace double_conversion
diff --git a/src/3rdparty/double-conversion/bignum-dtoa.h b/src/3rdparty/double-conversion/bignum-dtoa.h
deleted file mode 100644
index 34b961992d..0000000000
--- a/src/3rdparty/double-conversion/bignum-dtoa.h
+++ /dev/null
@@ -1,84 +0,0 @@
-// Copyright 2010 the V8 project authors. All rights reserved.
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-//       notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-//       copyright notice, this list of conditions and the following
-//       disclaimer in the documentation and/or other materials provided
-//       with the distribution.
-//     * Neither the name of Google Inc. nor the names of its
-//       contributors may be used to endorse or promote products derived
-//       from this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-#ifndef DOUBLE_CONVERSION_BIGNUM_DTOA_H_
-#define DOUBLE_CONVERSION_BIGNUM_DTOA_H_
-
-#include "utils.h"
-
-namespace double_conversion {
-
-enum BignumDtoaMode {
-  // Return the shortest correct representation.
-  // For example the output of 0.299999999999999988897 is (the less accurate but
-  // correct) 0.3.
-  BIGNUM_DTOA_SHORTEST,
-  // Same as BIGNUM_DTOA_SHORTEST but for single-precision floats.
-  BIGNUM_DTOA_SHORTEST_SINGLE,
-  // Return a fixed number of digits after the decimal point.
-  // For instance fixed(0.1, 4) becomes 0.1000
-  // If the input number is big, the output will be big.
-  BIGNUM_DTOA_FIXED,
-  // Return a fixed number of digits, no matter what the exponent is.
-  BIGNUM_DTOA_PRECISION
-};
-
-// Converts the given double 'v' to ascii.
-// The result should be interpreted as buffer * 10^(point-length).
-// The buffer will be null-terminated.
-//
-// The input v must be > 0 and different from NaN, and Infinity.
-//
-// The output depends on the given mode:
-//  - SHORTEST: produce the least amount of digits for which the internal
-//   identity requirement is still satisfied. If the digits are printed
-//   (together with the correct exponent) then reading this number will give
-//   'v' again. The buffer will choose the representation that is closest to
-//   'v'. If there are two at the same distance, than the number is round up.
-//   In this mode the 'requested_digits' parameter is ignored.
-//  - FIXED: produces digits necessary to print a given number with
-//   'requested_digits' digits after the decimal point. The produced digits
-//   might be too short in which case the caller has to fill the gaps with '0's.
-//   Example: toFixed(0.001, 5) is allowed to return buffer="1", point=-2.
-//   Halfway cases are rounded up. The call toFixed(0.15, 2) thus returns
-//     buffer="2", point=0.
-//   Note: the length of the returned buffer has no meaning wrt the significance
-//   of its digits. That is, just because it contains '0's does not mean that
-//   any other digit would not satisfy the internal identity requirement.
-//  - PRECISION: produces 'requested_digits' where the first digit is not '0'.
-//   Even though the length of produced digits usually equals
-//   'requested_digits', the function is allowed to return fewer digits, in
-//   which case the caller has to fill the missing digits with '0's.
-//   Halfway cases are again rounded up.
-// 'BignumDtoa' expects the given buffer to be big enough to hold all digits
-// and a terminating null-character.
-void BignumDtoa(double v, BignumDtoaMode mode, int requested_digits,
-                Vector<char> buffer, int* length, int* point);
-
-}  // namespace double_conversion
-
-#endif  // DOUBLE_CONVERSION_BIGNUM_DTOA_H_
diff --git a/src/3rdparty/double-conversion/bignum.cc b/src/3rdparty/double-conversion/bignum.cc
deleted file mode 100644
index 2743d67e8d..0000000000
--- a/src/3rdparty/double-conversion/bignum.cc
+++ /dev/null
@@ -1,766 +0,0 @@
-// Copyright 2010 the V8 project authors. All rights reserved.
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-//       notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-//       copyright notice, this list of conditions and the following
-//       disclaimer in the documentation and/or other materials provided
-//       with the distribution.
-//     * Neither the name of Google Inc. nor the names of its
-//       contributors may be used to endorse or promote products derived
-//       from this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-#include "bignum.h"
-#include "utils.h"
-
-namespace double_conversion {
-
-Bignum::Bignum()
-    : bigits_(bigits_buffer_, kBigitCapacity), used_digits_(0), exponent_(0) {
-  for (int i = 0; i < kBigitCapacity; ++i) {
-    bigits_[i] = 0;
-  }
-}
-
-
-template<typename S>
-static int BitSize(S value) {
-  (void) value;  // Mark variable as used.
-  return 8 * sizeof(value);
-}
-
-// Guaranteed to lie in one Bigit.
-void Bignum::AssignUInt16(uint16_t value) {
-  ASSERT(kBigitSize >= BitSize(value));
-  Zero();
-  if (value == 0) return;
-
-  EnsureCapacity(1);
-  bigits_[0] = value;
-  used_digits_ = 1;
-}
-
-
-void Bignum::AssignUInt64(uint64_t value) {
-  const int kUInt64Size = 64;
-
-  Zero();
-  if (value == 0) return;
-
-  int needed_bigits = kUInt64Size / kBigitSize + 1;
-  EnsureCapacity(needed_bigits);
-  for (int i = 0; i < needed_bigits; ++i) {
-    bigits_[i] = value & kBigitMask;
-    value = value >> kBigitSize;
-  }
-  used_digits_ = needed_bigits;
-  Clamp();
-}
-
-
-void Bignum::AssignBignum(const Bignum& other) {
-  exponent_ = other.exponent_;
-  for (int i = 0; i < other.used_digits_; ++i) {
-    bigits_[i] = other.bigits_[i];
-  }
-  // Clear the excess digits (if there were any).
-  for (int i = other.used_digits_; i < used_digits_; ++i) {
-    bigits_[i] = 0;
-  }
-  used_digits_ = other.used_digits_;
-}
-
-
-static uint64_t ReadUInt64(Vector<const char> buffer,
-                           int from,
-                           int digits_to_read) {
-  uint64_t result = 0;
-  for (int i = from; i < from + digits_to_read; ++i) {
-    int digit = buffer[i] - '0';
-    ASSERT(0 <= digit && digit <= 9);
-    result = result * 10 + digit;
-  }
-  return result;
-}
-
-
-void Bignum::AssignDecimalString(Vector<const char> value) {
-  // 2^64 = 18446744073709551616 > 10^19
-  const int kMaxUint64DecimalDigits = 19;
-  Zero();
-  int length = value.length();
-  int pos = 0;
-  // Let's just say that each digit needs 4 bits.
-  while (length >= kMaxUint64DecimalDigits) {
-    uint64_t digits = ReadUInt64(value, pos, kMaxUint64DecimalDigits);
-    pos += kMaxUint64DecimalDigits;
-    length -= kMaxUint64DecimalDigits;
-    MultiplyByPowerOfTen(kMaxUint64DecimalDigits);
-    AddUInt64(digits);
-  }
-  uint64_t digits = ReadUInt64(value, pos, length);
-  MultiplyByPowerOfTen(length);
-  AddUInt64(digits);
-  Clamp();
-}
-
-
-static int HexCharValue(char c) {
-  if ('0' <= c && c <= '9') return c - '0';
-  if ('a' <= c && c <= 'f') return 10 + c - 'a';
-  ASSERT('A' <= c && c <= 'F');
-  return 10 + c - 'A';
-}
-
-
-void Bignum::AssignHexString(Vector<const char> value) {
-  Zero();
-  int length = value.length();
-
-  int needed_bigits = length * 4 / kBigitSize + 1;
-  EnsureCapacity(needed_bigits);
-  int string_index = length - 1;
-  for (int i = 0; i < needed_bigits - 1; ++i) {
-    // These bigits are guaranteed to be "full".
-    Chunk current_bigit = 0;
-    for (int j = 0; j < kBigitSize / 4; j++) {
-      current_bigit += HexCharValue(value[string_index--]) << (j * 4);
-    }
-    bigits_[i] = current_bigit;
-  }
-  used_digits_ = needed_bigits - 1;
-
-  Chunk most_significant_bigit = 0;  // Could be = 0;
-  for (int j = 0; j <= string_index; ++j) {
-    most_significant_bigit <<= 4;
-    most_significant_bigit += HexCharValue(value[j]);
-  }
-  if (most_significant_bigit != 0) {
-    bigits_[used_digits_] = most_significant_bigit;
-    used_digits_++;
-  }
-  Clamp();
-}
-
-
-void Bignum::AddUInt64(uint64_t operand) {
-  if (operand == 0) return;
-  Bignum other;
-  other.AssignUInt64(operand);
-  AddBignum(other);
-}
-
-
-void Bignum::AddBignum(const Bignum& other) {
-  ASSERT(IsClamped());
-  ASSERT(other.IsClamped());
-
-  // If this has a greater exponent than other append zero-bigits to this.
-  // After this call exponent_ <= other.exponent_.
-  Align(other);
-
-  // There are two possibilities:
-  //   aaaaaaaaaaa 0000  (where the 0s represent a's exponent)
-  //     bbbbb 00000000
-  //   ----------------
-  //   ccccccccccc 0000
-  // or
-  //    aaaaaaaaaa 0000
-  //  bbbbbbbbb 0000000
-  //  -----------------
-  //  cccccccccccc 0000
-  // In both cases we might need a carry bigit.
-
-  EnsureCapacity(1 + Max(BigitLength(), other.BigitLength()) - exponent_);
-  Chunk carry = 0;
-  int bigit_pos = other.exponent_ - exponent_;
-  ASSERT(bigit_pos >= 0);
-  for (int i = 0; i < other.used_digits_; ++i) {
-    Chunk sum = bigits_[bigit_pos] + other.bigits_[i] + carry;
-    bigits_[bigit_pos] = sum & kBigitMask;
-    carry = sum >> kBigitSize;
-    bigit_pos++;
-  }
-
-  while (carry != 0) {
-    Chunk sum = bigits_[bigit_pos] + carry;
-    bigits_[bigit_pos] = sum & kBigitMask;
-    carry = sum >> kBigitSize;
-    bigit_pos++;
-  }
-  used_digits_ = Max(bigit_pos, used_digits_);
-  ASSERT(IsClamped());
-}
-
-
-void Bignum::SubtractBignum(const Bignum& other) {
-  ASSERT(IsClamped());
-  ASSERT(other.IsClamped());
-  // We require this to be bigger than other.
-  ASSERT(LessEqual(other, *this));
-
-  Align(other);
-
-  int offset = other.exponent_ - exponent_;
-  Chunk borrow = 0;
-  int i;
-  for (i = 0; i < other.used_digits_; ++i) {
-    ASSERT((borrow == 0) || (borrow == 1));
-    Chunk difference = bigits_[i + offset] - other.bigits_[i] - borrow;
-    bigits_[i + offset] = difference & kBigitMask;
-    borrow = difference >> (kChunkSize - 1);
-  }
-  while (borrow != 0) {
-    Chunk difference = bigits_[i + offset] - borrow;
-    bigits_[i + offset] = difference & kBigitMask;
-    borrow = difference >> (kChunkSize - 1);
-    ++i;
-  }
-  Clamp();
-}
-
-
-void Bignum::ShiftLeft(int shift_amount) {
-  if (used_digits_ == 0) return;
-  exponent_ += shift_amount / kBigitSize;
-  int local_shift = shift_amount % kBigitSize;
-  EnsureCapacity(used_digits_ + 1);
-  BigitsShiftLeft(local_shift);
-}
-
-
-void Bignum::MultiplyByUInt32(uint32_t factor) {
-  if (factor == 1) return;
-  if (factor == 0) {
-    Zero();
-    return;
-  }
-  if (used_digits_ == 0) return;
-
-  // The product of a bigit with the factor is of size kBigitSize + 32.
-  // Assert that this number + 1 (for the carry) fits into double chunk.
-  ASSERT(kDoubleChunkSize >= kBigitSize + 32 + 1);
-  DoubleChunk carry = 0;
-  for (int i = 0; i < used_digits_; ++i) {
-    DoubleChunk product = static_cast<DoubleChunk>(factor) * bigits_[i] + carry;
-    bigits_[i] = static_cast<Chunk>(product & kBigitMask);
-    carry = (product >> kBigitSize);
-  }
-  while (carry != 0) {
-    EnsureCapacity(used_digits_ + 1);
-    bigits_[used_digits_] = carry & kBigitMask;
-    used_digits_++;
-    carry >>= kBigitSize;
-  }
-}
-
-
-void Bignum::MultiplyByUInt64(uint64_t factor) {
-  if (factor == 1) return;
-  if (factor == 0) {
-    Zero();
-    return;
-  }
-  ASSERT(kBigitSize < 32);
-  uint64_t carry = 0;
-  uint64_t low = factor & 0xFFFFFFFF;
-  uint64_t high = factor >> 32;
-  for (int i = 0; i < used_digits_; ++i) {
-    uint64_t product_low = low * bigits_[i];
-    uint64_t product_high = high * bigits_[i];
-    uint64_t tmp = (carry & kBigitMask) + product_low;
-    bigits_[i] = tmp & kBigitMask;
-    carry = (carry >> kBigitSize) + (tmp >> kBigitSize) +
-        (product_high << (32 - kBigitSize));
-  }
-  while (carry != 0) {
-    EnsureCapacity(used_digits_ + 1);
-    bigits_[used_digits_] = carry & kBigitMask;
-    used_digits_++;
-    carry >>= kBigitSize;
-  }
-}
-
-
-void Bignum::MultiplyByPowerOfTen(int exponent) {
-  const uint64_t kFive27 = UINT64_2PART_C(0x6765c793, fa10079d);
-  const uint16_t kFive1 = 5;
-  const uint16_t kFive2 = kFive1 * 5;
-  const uint16_t kFive3 = kFive2 * 5;
-  const uint16_t kFive4 = kFive3 * 5;
-  const uint16_t kFive5 = kFive4 * 5;
-  const uint16_t kFive6 = kFive5 * 5;
-  const uint32_t kFive7 = kFive6 * 5;
-  const uint32_t kFive8 = kFive7 * 5;
-  const uint32_t kFive9 = kFive8 * 5;
-  const uint32_t kFive10 = kFive9 * 5;
-  const uint32_t kFive11 = kFive10 * 5;
-  const uint32_t kFive12 = kFive11 * 5;
-  const uint32_t kFive13 = kFive12 * 5;
-  const uint32_t kFive1_to_12[] =
-      { kFive1, kFive2, kFive3, kFive4, kFive5, kFive6,
-        kFive7, kFive8, kFive9, kFive10, kFive11, kFive12 };
-
-  ASSERT(exponent >= 0);
-  if (exponent == 0) return;
-  if (used_digits_ == 0) return;
-
-  // We shift by exponent at the end just before returning.
-  int remaining_exponent = exponent;
-  while (remaining_exponent >= 27) {
-    MultiplyByUInt64(kFive27);
-    remaining_exponent -= 27;
-  }
-  while (remaining_exponent >= 13) {
-    MultiplyByUInt32(kFive13);
-    remaining_exponent -= 13;
-  }
-  if (remaining_exponent > 0) {
-    MultiplyByUInt32(kFive1_to_12[remaining_exponent - 1]);
-  }
-  ShiftLeft(exponent);
-}
-
-
-void Bignum::Square() {
-  ASSERT(IsClamped());
-  int product_length = 2 * used_digits_;
-  EnsureCapacity(product_length);
-
-  // Comba multiplication: compute each column separately.
-  // Example: r = a2a1a0 * b2b1b0.
-  //    r =  1    * a0b0 +
-  //        10    * (a1b0 + a0b1) +
-  //        100   * (a2b0 + a1b1 + a0b2) +
-  //        1000  * (a2b1 + a1b2) +
-  //        10000 * a2b2
-  //
-  // In the worst case we have to accumulate nb-digits products of digit*digit.
-  //
-  // Assert that the additional number of bits in a DoubleChunk are enough to
-  // sum up used_digits of Bigit*Bigit.
-  if ((1 << (2 * (kChunkSize - kBigitSize))) <= used_digits_) {
-    UNIMPLEMENTED();
-  }
-  DoubleChunk accumulator = 0;
-  // First shift the digits so we don't overwrite them.
-  int copy_offset = used_digits_;
-  for (int i = 0; i < used_digits_; ++i) {
-    bigits_[copy_offset + i] = bigits_[i];
-  }
-  // We have two loops to avoid some 'if's in the loop.
-  for (int i = 0; i < used_digits_; ++i) {
-    // Process temporary digit i with power i.
-    // The sum of the two indices must be equal to i.
-    int bigit_index1 = i;
-    int bigit_index2 = 0;
-    // Sum all of the sub-products.
-    while (bigit_index1 >= 0) {
-      Chunk chunk1 = bigits_[copy_offset + bigit_index1];
-      Chunk chunk2 = bigits_[copy_offset + bigit_index2];
-      accumulator += static_cast<DoubleChunk>(chunk1) * chunk2;
-      bigit_index1--;
-      bigit_index2++;
-    }
-    bigits_[i] = static_cast<Chunk>(accumulator) & kBigitMask;
-    accumulator >>= kBigitSize;
-  }
-  for (int i = used_digits_; i < product_length; ++i) {
-    int bigit_index1 = used_digits_ - 1;
-    int bigit_index2 = i - bigit_index1;
-    // Invariant: sum of both indices is again equal to i.
-    // Inner loop runs 0 times on last iteration, emptying accumulator.
-    while (bigit_index2 < used_digits_) {
-      Chunk chunk1 = bigits_[copy_offset + bigit_index1];
-      Chunk chunk2 = bigits_[copy_offset + bigit_index2];
-      accumulator += static_cast<DoubleChunk>(chunk1) * chunk2;
-      bigit_index1--;
-      bigit_index2++;
-    }
-    // The overwritten bigits_[i] will never be read in further loop iterations,
-    // because bigit_index1 and bigit_index2 are always greater
-    // than i - used_digits_.
-    bigits_[i] = static_cast<Chunk>(accumulator) & kBigitMask;
-    accumulator >>= kBigitSize;
-  }
-  // Since the result was guaranteed to lie inside the number the
-  // accumulator must be 0 now.
-  ASSERT(accumulator == 0);
-
-  // Don't forget to update the used_digits and the exponent.
-  used_digits_ = product_length;
-  exponent_ *= 2;
-  Clamp();
-}
-
-
-void Bignum::AssignPowerUInt16(uint16_t base, int power_exponent) {
-  ASSERT(base != 0);
-  ASSERT(power_exponent >= 0);
-  if (power_exponent == 0) {
-    AssignUInt16(1);
-    return;
-  }
-  Zero();
-  int shifts = 0;
-  // We expect base to be in range 2-32, and most often to be 10.
-  // It does not make much sense to implement different algorithms for counting
-  // the bits.
-  while ((base & 1) == 0) {
-    base >>= 1;
-    shifts++;
-  }
-  int bit_size = 0;
-  int tmp_base = base;
-  while (tmp_base != 0) {
-    tmp_base >>= 1;
-    bit_size++;
-  }
-  int final_size = bit_size * power_exponent;
-  // 1 extra bigit for the shifting, and one for rounded final_size.
-  EnsureCapacity(final_size / kBigitSize + 2);
-
-  // Left to Right exponentiation.
-  int mask = 1;
-  while (power_exponent >= mask) mask <<= 1;
-
-  // The mask is now pointing to the bit above the most significant 1-bit of
-  // power_exponent.
-  // Get rid of first 1-bit;
-  mask >>= 2;
-  uint64_t this_value = base;
-
-  bool delayed_multipliciation = false;
-  const uint64_t max_32bits = 0xFFFFFFFF;
-  while (mask != 0 && this_value <= max_32bits) {
-    this_value = this_value * this_value;
-    // Verify that there is enough space in this_value to perform the
-    // multiplication.  The first bit_size bits must be 0.
-    if ((power_exponent & mask) != 0) {
-      uint64_t base_bits_mask =
-          ~((static_cast<uint64_t>(1) << (64 - bit_size)) - 1);
-      bool high_bits_zero = (this_value & base_bits_mask) == 0;
-      if (high_bits_zero) {
-        this_value *= base;
-      } else {
-        delayed_multipliciation = true;
-      }
-    }
-    mask >>= 1;
-  }
-  AssignUInt64(this_value);
-  if (delayed_multipliciation) {
-    MultiplyByUInt32(base);
-  }
-
-  // Now do the same thing as a bignum.
-  while (mask != 0) {
-    Square();
-    if ((power_exponent & mask) != 0) {
-      MultiplyByUInt32(base);
-    }
-    mask >>= 1;
-  }
-
-  // And finally add the saved shifts.
-  ShiftLeft(shifts * power_exponent);
-}
-
-
-// Precondition: this/other < 16bit.
-uint16_t Bignum::DivideModuloIntBignum(const Bignum& other) {
-  ASSERT(IsClamped());
-  ASSERT(other.IsClamped());
-  ASSERT(other.used_digits_ > 0);
-
-  // Easy case: if we have less digits than the divisor than the result is 0.
-  // Note: this handles the case where this == 0, too.
-  if (BigitLength() < other.BigitLength()) {
-    return 0;
-  }
-
-  Align(other);
-
-  uint16_t result = 0;
-
-  // Start by removing multiples of 'other' until both numbers have the same
-  // number of digits.
-  while (BigitLength() > other.BigitLength()) {
-    // This naive approach is extremely inefficient if `this` divided by other
-    // is big. This function is implemented for doubleToString where
-    // the result should be small (less than 10).
-    ASSERT(other.bigits_[other.used_digits_ - 1] >= ((1 << kBigitSize) / 16));
-    ASSERT(bigits_[used_digits_ - 1] < 0x10000);
-    // Remove the multiples of the first digit.
-    // Example this = 23 and other equals 9. -> Remove 2 multiples.
-    result += static_cast<uint16_t>(bigits_[used_digits_ - 1]);
-    SubtractTimes(other, bigits_[used_digits_ - 1]);
-  }
-
-  ASSERT(BigitLength() == other.BigitLength());
-
-  // Both bignums are at the same length now.
-  // Since other has more than 0 digits we know that the access to
-  // bigits_[used_digits_ - 1] is safe.
-  Chunk this_bigit = bigits_[used_digits_ - 1];
-  Chunk other_bigit = other.bigits_[other.used_digits_ - 1];
-
-  if (other.used_digits_ == 1) {
-    // Shortcut for easy (and common) case.
-    int quotient = this_bigit / other_bigit;
-    bigits_[used_digits_ - 1] = this_bigit - other_bigit * quotient;
-    ASSERT(quotient < 0x10000);
-    result += static_cast<uint16_t>(quotient);
-    Clamp();
-    return result;
-  }
-
-  int division_estimate = this_bigit / (other_bigit + 1);
-  ASSERT(division_estimate < 0x10000);
-  result += static_cast<uint16_t>(division_estimate);
-  SubtractTimes(other, division_estimate);
-
-  if (other_bigit * (division_estimate + 1) > this_bigit) {
-    // No need to even try to subtract. Even if other's remaining digits were 0
-    // another subtraction would be too much.
-    return result;
-  }
-
-  while (LessEqual(other, *this)) {
-    SubtractBignum(other);
-    result++;
-  }
-  return result;
-}
-
-
-template<typename S>
-static int SizeInHexChars(S number) {
-  ASSERT(number > 0);
-  int result = 0;
-  while (number != 0) {
-    number >>= 4;
-    result++;
-  }
-  return result;
-}
-
-
-static char HexCharOfValue(int value) {
-  ASSERT(0 <= value && value <= 16);
-  if (value < 10) return static_cast<char>(value + '0');
-  return static_cast<char>(value - 10 + 'A');
-}
-
-
-bool Bignum::ToHexString(char* buffer, int buffer_size) const {
-  ASSERT(IsClamped());
-  // Each bigit must be printable as separate hex-character.
-  ASSERT(kBigitSize % 4 == 0);
-  const int kHexCharsPerBigit = kBigitSize / 4;
-
-  if (used_digits_ == 0) {
-    if (buffer_size < 2) return false;
-    buffer[0] = '0';
-    buffer[1] = '\0';
-    return true;
-  }
-  // We add 1 for the terminating '\0' character.
-  int needed_chars = (BigitLength() - 1) * kHexCharsPerBigit +
-      SizeInHexChars(bigits_[used_digits_ - 1]) + 1;
-  if (needed_chars > buffer_size) return false;
-  int string_index = needed_chars - 1;
-  buffer[string_index--] = '\0';
-  for (int i = 0; i < exponent_; ++i) {
-    for (int j = 0; j < kHexCharsPerBigit; ++j) {
-      buffer[string_index--] = '0';
-    }
-  }
-  for (int i = 0; i < used_digits_ - 1; ++i) {
-    Chunk current_bigit = bigits_[i];
-    for (int j = 0; j < kHexCharsPerBigit; ++j) {
-      buffer[string_index--] = HexCharOfValue(current_bigit & 0xF);
-      current_bigit >>= 4;
-    }
-  }
-  // And finally the last bigit.
-  Chunk most_significant_bigit = bigits_[used_digits_ - 1];
-  while (most_significant_bigit != 0) {
-    buffer[string_index--] = HexCharOfValue(most_significant_bigit & 0xF);
-    most_significant_bigit >>= 4;
-  }
-  return true;
-}
-
-
-Bignum::Chunk Bignum::BigitAt(int index) const {
-  if (index >= BigitLength()) return 0;
-  if (index < exponent_) return 0;
-  return bigits_[index - exponent_];
-}
-
-
-int Bignum::Compare(const Bignum& a, const Bignum& b) {
-  ASSERT(a.IsClamped());
-  ASSERT(b.IsClamped());
-  int bigit_length_a = a.BigitLength();
-  int bigit_length_b = b.BigitLength();
-  if (bigit_length_a < bigit_length_b) return -1;
-  if (bigit_length_a > bigit_length_b) return +1;
-  for (int i = bigit_length_a - 1; i >= Min(a.exponent_, b.exponent_); --i) {
-    Chunk bigit_a = a.BigitAt(i);
-    Chunk bigit_b = b.BigitAt(i);
-    if (bigit_a < bigit_b) return -1;
-    if (bigit_a > bigit_b) return +1;
-    // Otherwise they are equal up to this digit. Try the next digit.
-  }
-  return 0;
-}
-
-
-int Bignum::PlusCompare(const Bignum& a, const Bignum& b, const Bignum& c) {
-  ASSERT(a.IsClamped());
-  ASSERT(b.IsClamped());
-  ASSERT(c.IsClamped());
-  if (a.BigitLength() < b.BigitLength()) {
-    return PlusCompare(b, a, c);
-  }
-  if (a.BigitLength() + 1 < c.BigitLength()) return -1;
-  if (a.BigitLength() > c.BigitLength()) return +1;
-  // The exponent encodes 0-bigits. So if there are more 0-digits in 'a' than
-  // 'b' has digits, then the bigit-length of 'a'+'b' must be equal to the one
-  // of 'a'.
-  if (a.exponent_ >= b.BigitLength() && a.BigitLength() < c.BigitLength()) {
-    return -1;
-  }
-
-  Chunk borrow = 0;
-  // Starting at min_exponent all digits are == 0. So no need to compare them.
-  int min_exponent = Min(Min(a.exponent_, b.exponent_), c.exponent_);
-  for (int i = c.BigitLength() - 1; i >= min_exponent; --i) {
-    Chunk chunk_a = a.BigitAt(i);
-    Chunk chunk_b = b.BigitAt(i);
-    Chunk chunk_c = c.BigitAt(i);
-    Chunk sum = chunk_a + chunk_b;
-    if (sum > chunk_c + borrow) {
-      return +1;
-    } else {
-      borrow = chunk_c + borrow - sum;
-      if (borrow > 1) return -1;
-      borrow <<= kBigitSize;
-    }
-  }
-  if (borrow == 0) return 0;
-  return -1;
-}
-
-
-void Bignum::Clamp() {
-  while (used_digits_ > 0 && bigits_[used_digits_ - 1] == 0) {
-    used_digits_--;
-  }
-  if (used_digits_ == 0) {
-    // Zero.
-    exponent_ = 0;
-  }
-}
-
-
-bool Bignum::IsClamped() const {
-  return used_digits_ == 0 || bigits_[used_digits_ - 1] != 0;
-}
-
-
-void Bignum::Zero() {
-  for (int i = 0; i < used_digits_; ++i) {
-    bigits_[i] = 0;
-  }
-  used_digits_ = 0;
-  exponent_ = 0;
-}
-
-
-void Bignum::Align(const Bignum& other) {
-  if (exponent_ > other.exponent_) {
-    // If "X" represents a "hidden" digit (by the exponent) then we are in the
-    // following case (a == this, b == other):
-    // a:  aaaaaaXXXX   or a:   aaaaaXXX
-    // b:     bbbbbbX      b: bbbbbbbbXX
-    // We replace some of the hidden digits (X) of a with 0 digits.
-    // a:  aaaaaa000X   or a:   aaaaa0XX
-    int zero_digits = exponent_ - other.exponent_;
-    EnsureCapacity(used_digits_ + zero_digits);
-    for (int i = used_digits_ - 1; i >= 0; --i) {
-      bigits_[i + zero_digits] = bigits_[i];
-    }
-    for (int i = 0; i < zero_digits; ++i) {
-      bigits_[i] = 0;
-    }
-    used_digits_ += zero_digits;
-    exponent_ -= zero_digits;
-    ASSERT(used_digits_ >= 0);
-    ASSERT(exponent_ >= 0);
-  }
-}
-
-
-void Bignum::BigitsShiftLeft(int shift_amount) {
-  ASSERT(shift_amount < kBigitSize);
-  ASSERT(shift_amount >= 0);
-  Chunk carry = 0;
-  for (int i = 0; i < used_digits_; ++i) {
-    Chunk new_carry = bigits_[i] >> (kBigitSize - shift_amount);
-    bigits_[i] = ((bigits_[i] << shift_amount) + carry) & kBigitMask;
-    carry = new_carry;
-  }
-  if (carry != 0) {
-    bigits_[used_digits_] = carry;
-    used_digits_++;
-  }
-}
-
-
-void Bignum::SubtractTimes(const Bignum& other, int factor) {
-  ASSERT(exponent_ <= other.exponent_);
-  if (factor < 3) {
-    for (int i = 0; i < factor; ++i) {
-      SubtractBignum(other);
-    }
-    return;
-  }
-  Chunk borrow = 0;
-  int exponent_diff = other.exponent_ - exponent_;
-  for (int i = 0; i < other.used_digits_; ++i) {
-    DoubleChunk product = static_cast<DoubleChunk>(factor) * other.bigits_[i];
-    DoubleChunk remove = borrow + product;
-    Chunk difference = bigits_[i + exponent_diff] - (remove & kBigitMask);
-    bigits_[i + exponent_diff] = difference & kBigitMask;
-    borrow = static_cast<Chunk>((difference >> (kChunkSize - 1)) +
-                                (remove >> kBigitSize));
-  }
-  for (int i = other.used_digits_ + exponent_diff; i < used_digits_; ++i) {
-    if (borrow == 0) return;
-    Chunk difference = bigits_[i] - borrow;
-    bigits_[i] = difference & kBigitMask;
-    borrow = difference >> (kChunkSize - 1);
-  }
-  Clamp();
-}
-
-
-}  // namespace double_conversion
diff --git a/src/3rdparty/double-conversion/bignum.h b/src/3rdparty/double-conversion/bignum.h
deleted file mode 100644
index 5ec3544f57..0000000000
--- a/src/3rdparty/double-conversion/bignum.h
+++ /dev/null
@@ -1,145 +0,0 @@
-// Copyright 2010 the V8 project authors. All rights reserved.
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-//       notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-//       copyright notice, this list of conditions and the following
-//       disclaimer in the documentation and/or other materials provided
-//       with the distribution.
-//     * Neither the name of Google Inc. nor the names of its
-//       contributors may be used to endorse or promote products derived
-//       from this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-#ifndef DOUBLE_CONVERSION_BIGNUM_H_
-#define DOUBLE_CONVERSION_BIGNUM_H_
-
-#include "utils.h"
-
-namespace double_conversion {
-
-class Bignum {
- public:
-  // 3584 = 128 * 28. We can represent 2^3584 > 10^1000 accurately.
-  // This bignum can encode much bigger numbers, since it contains an
-  // exponent.
-  static const int kMaxSignificantBits = 3584;
-
-  Bignum();
-  void AssignUInt16(uint16_t value);
-  void AssignUInt64(uint64_t value);
-  void AssignBignum(const Bignum& other);
-
-  void AssignDecimalString(Vector<const char> value);
-  void AssignHexString(Vector<const char> value);
-
-  void AssignPowerUInt16(uint16_t base, int exponent);
-
-  void AddUInt16(uint16_t operand);
-  void AddUInt64(uint64_t operand);
-  void AddBignum(const Bignum& other);
-  // Precondition: this >= other.
-  void SubtractBignum(const Bignum& other);
-
-  void Square();
-  void ShiftLeft(int shift_amount);
-  void MultiplyByUInt32(uint32_t factor);
-  void MultiplyByUInt64(uint64_t factor);
-  void MultiplyByPowerOfTen(int exponent);
-  void Times10() { return MultiplyByUInt32(10); }
-  // Pseudocode:
-  //  int result = this / other;
-  //  this = this % other;
-  // In the worst case this function is in O(this/other).
-  uint16_t DivideModuloIntBignum(const Bignum& other);
-
-  bool ToHexString(char* buffer, int buffer_size) const;
-
-  // Returns
-  //  -1 if a < b,
-  //   0 if a == b, and
-  //  +1 if a > b.
-  static int Compare(const Bignum& a, const Bignum& b);
-  static bool Equal(const Bignum& a, const Bignum& b) {
-    return Compare(a, b) == 0;
-  }
-  static bool LessEqual(const Bignum& a, const Bignum& b) {
-    return Compare(a, b) <= 0;
-  }
-  static bool Less(const Bignum& a, const Bignum& b) {
-    return Compare(a, b) < 0;
-  }
-  // Returns Compare(a + b, c);
-  static int PlusCompare(const Bignum& a, const Bignum& b, const Bignum& c);
-  // Returns a + b == c
-  static bool PlusEqual(const Bignum& a, const Bignum& b, const Bignum& c) {
-    return PlusCompare(a, b, c) == 0;
-  }
-  // Returns a + b <= c
-  static bool PlusLessEqual(const Bignum& a, const Bignum& b, const Bignum& c) {
-    return PlusCompare(a, b, c) <= 0;
-  }
-  // Returns a + b < c
-  static bool PlusLess(const Bignum& a, const Bignum& b, const Bignum& c) {
-    return PlusCompare(a, b, c) < 0;
-  }
- private:
-  typedef uint32_t Chunk;
-  typedef uint64_t DoubleChunk;
-
-  static const int kChunkSize = sizeof(Chunk) * 8;
-  static const int kDoubleChunkSize = sizeof(DoubleChunk) * 8;
-  // With bigit size of 28 we loose some bits, but a double still fits easily
-  // into two chunks, and more importantly we can use the Comba multiplication.
-  static const int kBigitSize = 28;
-  static const Chunk kBigitMask = (1 << kBigitSize) - 1;
-  // Every instance allocates kBigitLength chunks on the stack. Bignums cannot
-  // grow. There are no checks if the stack-allocated space is sufficient.
-  static const int kBigitCapacity = kMaxSignificantBits / kBigitSize;
-
-  void EnsureCapacity(int size) {
-    if (size > kBigitCapacity) {
-      UNREACHABLE();
-    }
-  }
-  void Align(const Bignum& other);
-  void Clamp();
-  bool IsClamped() const;
-  void Zero();
-  // Requires this to have enough capacity (no tests done).
-  // Updates used_digits_ if necessary.
-  // shift_amount must be < kBigitSize.
-  void BigitsShiftLeft(int shift_amount);
-  // BigitLength includes the "hidden" digits encoded in the exponent.
-  int BigitLength() const { return used_digits_ + exponent_; }
-  Chunk BigitAt(int index) const;
-  void SubtractTimes(const Bignum& other, int factor);
-
-  Chunk bigits_buffer_[kBigitCapacity];
-  // A vector backed by bigits_buffer_. This way accesses to the array are
-  // checked for out-of-bounds errors.
-  Vector<Chunk> bigits_;
-  int used_digits_;
-  // The Bignum's value equals value(bigits_) * 2^(exponent_ * kBigitSize).
-  int exponent_;
-
-  DISALLOW_COPY_AND_ASSIGN(Bignum);
-};
-
-}  // namespace double_conversion
-
-#endif  // DOUBLE_CONVERSION_BIGNUM_H_
diff --git a/src/3rdparty/double-conversion/cached-powers.cc b/src/3rdparty/double-conversion/cached-powers.cc
deleted file mode 100644
index 9536f26927..0000000000
--- a/src/3rdparty/double-conversion/cached-powers.cc
+++ /dev/null
@@ -1,178 +0,0 @@
-// Copyright 2006-2008 the V8 project authors. All rights reserved.
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-//       notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-//       copyright notice, this list of conditions and the following
-//       disclaimer in the documentation and/or other materials provided
-//       with the distribution.
-//     * Neither the name of Google Inc. nor the names of its
-//       contributors may be used to endorse or promote products derived
-//       from this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-#include <stdarg.h>
-#include <limits.h>
-#include <math.h>
-
-#include "utils.h"
-
-#include "cached-powers.h"
-
-namespace double_conversion {
-
-struct CachedPower {
-  uint64_t significand;
-  int16_t binary_exponent;
-  int16_t decimal_exponent;
-};
-
-static const CachedPower kCachedPowers[] = {
-  {UINT64_2PART_C(0xfa8fd5a0, 081c0288), -1220, -348},
-  {UINT64_2PART_C(0xbaaee17f, a23ebf76), -1193, -340},
-  {UINT64_2PART_C(0x8b16fb20, 3055ac76), -1166, -332},
-  {UINT64_2PART_C(0xcf42894a, 5dce35ea), -1140, -324},
-  {UINT64_2PART_C(0x9a6bb0aa, 55653b2d), -1113, -316},
-  {UINT64_2PART_C(0xe61acf03, 3d1a45df), -1087, -308},
-  {UINT64_2PART_C(0xab70fe17, c79ac6ca), -1060, -300},
-  {UINT64_2PART_C(0xff77b1fc, bebcdc4f), -1034, -292},
-  {UINT64_2PART_C(0xbe5691ef, 416bd60c), -1007, -284},
-  {UINT64_2PART_C(0x8dd01fad, 907ffc3c), -980, -276},
-  {UINT64_2PART_C(0xd3515c28, 31559a83), -954, -268},
-  {UINT64_2PART_C(0x9d71ac8f, ada6c9b5), -927, -260},
-  {UINT64_2PART_C(0xea9c2277, 23ee8bcb), -901, -252},
-  {UINT64_2PART_C(0xaecc4991, 4078536d), -874, -244},
-  {UINT64_2PART_C(0x823c1279, 5db6ce57), -847, -236},
-  {UINT64_2PART_C(0xc2109436, 4dfb5637), -821, -228},
-  {UINT64_2PART_C(0x9096ea6f, 3848984f), -794, -220},
-  {UINT64_2PART_C(0xd77485cb, 25823ac7), -768, -212},
-  {UINT64_2PART_C(0xa086cfcd, 97bf97f4), -741, -204},
-  {UINT64_2PART_C(0xef340a98, 172aace5), -715, -196},
-  {UINT64_2PART_C(0xb23867fb, 2a35b28e), -688, -188},
-  {UINT64_2PART_C(0x84c8d4df, d2c63f3b), -661, -180},
-  {UINT64_2PART_C(0xc5dd4427, 1ad3cdba), -635, -172},
-  {UINT64_2PART_C(0x936b9fce, bb25c996), -608, -164},
-  {UINT64_2PART_C(0xdbac6c24, 7d62a584), -582, -156},
-  {UINT64_2PART_C(0xa3ab6658, 0d5fdaf6), -555, -148},
-  {UINT64_2PART_C(0xf3e2f893, dec3f126), -529, -140},
-  {UINT64_2PART_C(0xb5b5ada8, aaff80b8), -502, -132},
-  {UINT64_2PART_C(0x87625f05, 6c7c4a8b), -475, -124},
-  {UINT64_2PART_C(0xc9bcff60, 34c13053), -449, -116},
-  {UINT64_2PART_C(0x964e858c, 91ba2655), -422, -108},
-  {UINT64_2PART_C(0xdff97724, 70297ebd), -396, -100},
-  {UINT64_2PART_C(0xa6dfbd9f, b8e5b88f), -369, -92},
-  {UINT64_2PART_C(0xf8a95fcf, 88747d94), -343, -84},
-  {UINT64_2PART_C(0xb9447093, 8fa89bcf), -316, -76},
-  {UINT64_2PART_C(0x8a08f0f8, bf0f156b), -289, -68},
-  {UINT64_2PART_C(0xcdb02555, 653131b6), -263, -60},
-  {UINT64_2PART_C(0x993fe2c6, d07b7fac), -236, -52},
-  {UINT64_2PART_C(0xe45c10c4, 2a2b3b06), -210, -44},
-  {UINT64_2PART_C(0xaa242499, 697392d3), -183, -36},
-  {UINT64_2PART_C(0xfd87b5f2, 8300ca0e), -157, -28},
-  {UINT64_2PART_C(0xbce50864, 92111aeb), -130, -20},
-  {UINT64_2PART_C(0x8cbccc09, 6f5088cc), -103, -12},
-  {UINT64_2PART_C(0xd1b71758, e219652c), -77, -4},
-  {UINT64_2PART_C(0x9c400000, 00000000), -50, 4},
-  {UINT64_2PART_C(0xe8d4a510, 00000000), -24, 12},
-  {UINT64_2PART_C(0xad78ebc5, ac620000), 3, 20},
-  {UINT64_2PART_C(0x813f3978, f8940984), 30, 28},
-  {UINT64_2PART_C(0xc097ce7b, c90715b3), 56, 36},
-  {UINT64_2PART_C(0x8f7e32ce, 7bea5c70), 83, 44},
-  {UINT64_2PART_C(0xd5d238a4, abe98068), 109, 52},
-  {UINT64_2PART_C(0x9f4f2726, 179a2245), 136, 60},
-  {UINT64_2PART_C(0xed63a231, d4c4fb27), 162, 68},
-  {UINT64_2PART_C(0xb0de6538, 8cc8ada8), 189, 76},
-  {UINT64_2PART_C(0x83c7088e, 1aab65db), 216, 84},
-  {UINT64_2PART_C(0xc45d1df9, 42711d9a), 242, 92},
-  {UINT64_2PART_C(0x924d692c, a61be758), 269, 100},
-  {UINT64_2PART_C(0xda01ee64, 1a708dea), 295, 108},
-  {UINT64_2PART_C(0xa26da399, 9aef774a), 322, 116},
-  {UINT64_2PART_C(0xf209787b, b47d6b85), 348, 124},
-  {UINT64_2PART_C(0xb454e4a1, 79dd1877), 375, 132},
-  {UINT64_2PART_C(0x865b8692, 5b9bc5c2), 402, 140},
-  {UINT64_2PART_C(0xc83553c5, c8965d3d), 428, 148},
-  {UINT64_2PART_C(0x952ab45c, fa97a0b3), 455, 156},
-  {UINT64_2PART_C(0xde469fbd, 99a05fe3), 481, 164},
-  {UINT64_2PART_C(0xa59bc234, db398c25), 508, 172},
-  {UINT64_2PART_C(0xf6c69a72, a3989f5c), 534, 180},
-  {UINT64_2PART_C(0xb7dcbf53, 54e9bece), 561, 188},
-  {UINT64_2PART_C(0x88fcf317, f22241e2), 588, 196},
-  {UINT64_2PART_C(0xcc20ce9b, d35c78a5), 614, 204},
-  {UINT64_2PART_C(0x98165af3, 7b2153df), 641, 212},
-  {UINT64_2PART_C(0xe2a0b5dc, 971f303a), 667, 220},
-  {UINT64_2PART_C(0xa8d9d153, 5ce3b396), 694, 228},
-  {UINT64_2PART_C(0xfb9b7cd9, a4a7443c), 720, 236},
-  {UINT64_2PART_C(0xbb764c4c, a7a44410), 747, 244},
-  {UINT64_2PART_C(0x8bab8eef, b6409c1a), 774, 252},
-  {UINT64_2PART_C(0xd01fef10, a657842c), 800, 260},
-  {UINT64_2PART_C(0x9b10a4e5, e9913129), 827, 268},
-  {UINT64_2PART_C(0xe7109bfb, a19c0c9d), 853, 276},
-  {UINT64_2PART_C(0xac2820d9, 623bf429), 880, 284},
-  {UINT64_2PART_C(0x80444b5e, 7aa7cf85), 907, 292},
-  {UINT64_2PART_C(0xbf21e440, 03acdd2d), 933, 300},
-  {UINT64_2PART_C(0x8e679c2f, 5e44ff8f), 960, 308},
-  {UINT64_2PART_C(0xd433179d, 9c8cb841), 986, 316},
-  {UINT64_2PART_C(0x9e19db92, b4e31ba9), 1013, 324},
-  {UINT64_2PART_C(0xeb96bf6e, badf77d9), 1039, 332},
-  {UINT64_2PART_C(0xaf87023b, 9bf0ee6b), 1066, 340},
-};
-
-static const int kCachedPowersLength = ARRAY_SIZE(kCachedPowers);
-static const int kCachedPowersOffset = 348;  // -1 * the first decimal_exponent.
-static const double kD_1_LOG2_10 = 0.30102999566398114;  //  1 / lg(10)
-// Difference between the decimal exponents in the table above.
-const int PowersOfTenCache::kDecimalExponentDistance = 8;
-const int PowersOfTenCache::kMinDecimalExponent = -348;
-const int PowersOfTenCache::kMaxDecimalExponent = 340;
-
-void PowersOfTenCache::GetCachedPowerForBinaryExponentRange(
-    int min_exponent,
-    int max_exponent,
-    DiyFp* power,
-    int* decimal_exponent) {
-  (void)max_exponent; // Silence unused parameter warning in release builds
-  (void)kCachedPowersLength; // Silence unused parameter warning in release builds
-  int kQ = DiyFp::kSignificandSize;
-  double k = ceil((min_exponent + kQ - 1) * kD_1_LOG2_10);
-  int foo = kCachedPowersOffset;
-  int index =
-      (foo + static_cast<int>(k) - 1) / kDecimalExponentDistance + 1;
-  ASSERT(0 <= index && index < kCachedPowersLength);
-  CachedPower cached_power = kCachedPowers[index];
-  ASSERT(min_exponent <= cached_power.binary_exponent);
-  (void) max_exponent;  // Mark variable as used.
-  ASSERT(cached_power.binary_exponent <= max_exponent);
-  *decimal_exponent = cached_power.decimal_exponent;
-  *power = DiyFp(cached_power.significand, cached_power.binary_exponent);
-}
-
-
-void PowersOfTenCache::GetCachedPowerForDecimalExponent(int requested_exponent,
-                                                        DiyFp* power,
-                                                        int* found_exponent) {
-  ASSERT(kMinDecimalExponent <= requested_exponent);
-  ASSERT(requested_exponent < kMaxDecimalExponent + kDecimalExponentDistance);
-  int index =
-      (requested_exponent + kCachedPowersOffset) / kDecimalExponentDistance;
-  CachedPower cached_power = kCachedPowers[index];
-  *power = DiyFp(cached_power.significand, cached_power.binary_exponent);
-  *found_exponent = cached_power.decimal_exponent;
-  ASSERT(*found_exponent <= requested_exponent);
-  ASSERT(requested_exponent < *found_exponent + kDecimalExponentDistance);
-}
-
-}  // namespace double_conversion
diff --git a/src/3rdparty/double-conversion/cached-powers.h b/src/3rdparty/double-conversion/cached-powers.h
deleted file mode 100644
index 61a50614cf..0000000000
--- a/src/3rdparty/double-conversion/cached-powers.h
+++ /dev/null
@@ -1,64 +0,0 @@
-// Copyright 2010 the V8 project authors. All rights reserved.
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-//       notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-//       copyright notice, this list of conditions and the following
-//       disclaimer in the documentation and/or other materials provided
-//       with the distribution.
-//     * Neither the name of Google Inc. nor the names of its
-//       contributors may be used to endorse or promote products derived
-//       from this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-#ifndef DOUBLE_CONVERSION_CACHED_POWERS_H_
-#define DOUBLE_CONVERSION_CACHED_POWERS_H_
-
-#include "diy-fp.h"
-
-namespace double_conversion {
-
-class PowersOfTenCache {
- public:
-
-  // Not all powers of ten are cached. The decimal exponent of two neighboring
-  // cached numbers will differ by kDecimalExponentDistance.
-  static const int kDecimalExponentDistance;
-
-  static const int kMinDecimalExponent;
-  static const int kMaxDecimalExponent;
-
-  // Returns a cached power-of-ten with a binary exponent in the range
-  // [min_exponent; max_exponent] (boundaries included).
-  static void GetCachedPowerForBinaryExponentRange(int min_exponent,
-                                                   int max_exponent,
-                                                   DiyFp* power,
-                                                   int* decimal_exponent);
-
-  // Returns a cached power of ten x ~= 10^k such that
-  //   k <= decimal_exponent < k + kCachedPowersDecimalDistance.
-  // The given decimal_exponent must satisfy
-  //   kMinDecimalExponent <= requested_exponent, and
-  //   requested_exponent < kMaxDecimalExponent + kDecimalExponentDistance.
-  static void GetCachedPowerForDecimalExponent(int requested_exponent,
-                                               DiyFp* power,
-                                               int* found_exponent);
-};
-
-}  // namespace double_conversion
-
-#endif  // DOUBLE_CONVERSION_CACHED_POWERS_H_
diff --git a/src/3rdparty/double-conversion/diy-fp.cc b/src/3rdparty/double-conversion/diy-fp.cc
deleted file mode 100644
index ddd1891b16..0000000000
--- a/src/3rdparty/double-conversion/diy-fp.cc
+++ /dev/null
@@ -1,57 +0,0 @@
-// Copyright 2010 the V8 project authors. All rights reserved.
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-//       notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-//       copyright notice, this list of conditions and the following
-//       disclaimer in the documentation and/or other materials provided
-//       with the distribution.
-//     * Neither the name of Google Inc. nor the names of its
-//       contributors may be used to endorse or promote products derived
-//       from this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-
-#include "diy-fp.h"
-#include "utils.h"
-
-namespace double_conversion {
-
-void DiyFp::Multiply(const DiyFp& other) {
-  // Simply "emulates" a 128 bit multiplication.
-  // However: the resulting number only contains 64 bits. The least
-  // significant 64 bits are only used for rounding the most significant 64
-  // bits.
-  const uint64_t kM32 = 0xFFFFFFFFU;
-  uint64_t a = f_ >> 32;
-  uint64_t b = f_ & kM32;
-  uint64_t c = other.f_ >> 32;
-  uint64_t d = other.f_ & kM32;
-  uint64_t ac = a * c;
-  uint64_t bc = b * c;
-  uint64_t ad = a * d;
-  uint64_t bd = b * d;
-  uint64_t tmp = (bd >> 32) + (ad & kM32) + (bc & kM32);
-  // By adding 1U << 31 to tmp we round the final result.
-  // Halfway cases will be round up.
-  tmp += 1U << 31;
-  uint64_t result_f = ac + (ad >> 32) + (bc >> 32) + (tmp >> 32);
-  e_ += other.e_ + 64;
-  f_ = result_f;
-}
-
-}  // namespace double_conversion
diff --git a/src/3rdparty/double-conversion/diy-fp.h b/src/3rdparty/double-conversion/diy-fp.h
deleted file mode 100644
index 9dcf8fbdba..0000000000
--- a/src/3rdparty/double-conversion/diy-fp.h
+++ /dev/null
@@ -1,118 +0,0 @@
-// Copyright 2010 the V8 project authors. All rights reserved.
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-//       notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-//       copyright notice, this list of conditions and the following
-//       disclaimer in the documentation and/or other materials provided
-//       with the distribution.
-//     * Neither the name of Google Inc. nor the names of its
-//       contributors may be used to endorse or promote products derived
-//       from this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-#ifndef DOUBLE_CONVERSION_DIY_FP_H_
-#define DOUBLE_CONVERSION_DIY_FP_H_
-
-#include "utils.h"
-
-namespace double_conversion {
-
-// This "Do It Yourself Floating Point" class implements a floating-point number
-// with a uint64 significand and an int exponent. Normalized DiyFp numbers will
-// have the most significant bit of the significand set.
-// Multiplication and Subtraction do not normalize their results.
-// DiyFp are not designed to contain special doubles (NaN and Infinity).
-class DiyFp {
- public:
-  static const int kSignificandSize = 64;
-
-  DiyFp() : f_(0), e_(0) {}
-  DiyFp(uint64_t f, int e) : f_(f), e_(e) {}
-
-  // this = this - other.
-  // The exponents of both numbers must be the same and the significand of this
-  // must be bigger than the significand of other.
-  // The result will not be normalized.
-  void Subtract(const DiyFp& other) {
-    ASSERT(e_ == other.e_);
-    ASSERT(f_ >= other.f_);
-    f_ -= other.f_;
-  }
-
-  // Returns a - b.
-  // The exponents of both numbers must be the same and this must be bigger
-  // than other. The result will not be normalized.
-  static DiyFp Minus(const DiyFp& a, const DiyFp& b) {
-    DiyFp result = a;
-    result.Subtract(b);
-    return result;
-  }
-
-
-  // this = this * other.
-  void Multiply(const DiyFp& other);
-
-  // returns a * b;
-  static DiyFp Times(const DiyFp& a, const DiyFp& b) {
-    DiyFp result = a;
-    result.Multiply(b);
-    return result;
-  }
-
-  void Normalize() {
-    ASSERT(f_ != 0);
-    uint64_t f = f_;
-    int e = e_;
-
-    // This method is mainly called for normalizing boundaries. In general
-    // boundaries need to be shifted by 10 bits. We thus optimize for this case.
-    const uint64_t k10MSBits = UINT64_2PART_C(0xFFC00000, 00000000);
-    while ((f & k10MSBits) == 0) {
-      f <<= 10;
-      e -= 10;
-    }
-    while ((f & kUint64MSB) == 0) {
-      f <<= 1;
-      e--;
-    }
-    f_ = f;
-    e_ = e;
-  }
-
-  static DiyFp Normalize(const DiyFp& a) {
-    DiyFp result = a;
-    result.Normalize();
-    return result;
-  }
-
-  uint64_t f() const { return f_; }
-  int e() const { return e_; }
-
-  void set_f(uint64_t new_value) { f_ = new_value; }
-  void set_e(int new_value) { e_ = new_value; }
-
- private:
-  static const uint64_t kUint64MSB = UINT64_2PART_C(0x80000000, 00000000);
-
-  uint64_t f_;
-  int e_;
-};
-
-}  // namespace double_conversion
-
-#endif  // DOUBLE_CONVERSION_DIY_FP_H_
diff --git a/src/3rdparty/double-conversion/double-conversion.cc b/src/3rdparty/double-conversion/double-conversion.cc
deleted file mode 100644
index 909985be82..0000000000
--- a/src/3rdparty/double-conversion/double-conversion.cc
+++ /dev/null
@@ -1,975 +0,0 @@
-// Copyright 2010 the V8 project authors. All rights reserved.
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-//       notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-//       copyright notice, this list of conditions and the following
-//       disclaimer in the documentation and/or other materials provided
-//       with the distribution.
-//     * Neither the name of Google Inc. nor the names of its
-//       contributors may be used to endorse or promote products derived
-//       from this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-#include <limits.h>
-#include <math.h>
-
-#include "double-conversion.h"
-
-#include "bignum-dtoa.h"
-#include "fast-dtoa.h"
-#include "fixed-dtoa.h"
-#include "ieee.h"
-#include "strtod.h"
-#include "utils.h"
-
-namespace double_conversion {
-
-const DoubleToStringConverter& DoubleToStringConverter::EcmaScriptConverter() {
-  int flags = UNIQUE_ZERO | EMIT_POSITIVE_EXPONENT_SIGN;
-  static DoubleToStringConverter converter(flags,
-                                           "Infinity",
-                                           "NaN",
-                                           'e',
-                                           -6, 21,
-                                           6, 0);
-  return converter;
-}
-
-
-bool DoubleToStringConverter::HandleSpecialValues(
-    double value,
-    StringBuilder* result_builder) const {
-  Double double_inspect(value);
-  if (double_inspect.IsInfinite()) {
-    if (infinity_symbol_ == NULL) return false;
-    if (value < 0) {
-      result_builder->AddCharacter('-');
-    }
-    result_builder->AddString(infinity_symbol_);
-    return true;
-  }
-  if (double_inspect.IsNan()) {
-    if (nan_symbol_ == NULL) return false;
-    result_builder->AddString(nan_symbol_);
-    return true;
-  }
-  return false;
-}
-
-
-void DoubleToStringConverter::CreateExponentialRepresentation(
-    const char* decimal_digits,
-    int length,
-    int exponent,
-    StringBuilder* result_builder) const {
-  ASSERT(length != 0);
-  result_builder->AddCharacter(decimal_digits[0]);
-  if (length != 1) {
-    result_builder->AddCharacter('.');
-    result_builder->AddSubstring(&decimal_digits[1], length-1);
-  }
-  result_builder->AddCharacter(exponent_character_);
-  if (exponent < 0) {
-    result_builder->AddCharacter('-');
-    exponent = -exponent;
-  } else {
-    if ((flags_ & EMIT_POSITIVE_EXPONENT_SIGN) != 0) {
-      result_builder->AddCharacter('+');
-    }
-  }
-  if (exponent == 0) {
-    result_builder->AddCharacter('0');
-    return;
-  }
-  ASSERT(exponent < 1e4);
-  const int kMaxExponentLength = 5;
-  char buffer[kMaxExponentLength + 1];
-  buffer[kMaxExponentLength] = '\0';
-  int first_char_pos = kMaxExponentLength;
-  while (exponent > 0) {
-    buffer[--first_char_pos] = '0' + (exponent % 10);
-    exponent /= 10;
-  }
-  result_builder->AddSubstring(&buffer[first_char_pos],
-                               kMaxExponentLength - first_char_pos);
-}
-
-
-void DoubleToStringConverter::CreateDecimalRepresentation(
-    const char* decimal_digits,
-    int length,
-    int decimal_point,
-    int digits_after_point,
-    StringBuilder* result_builder) const {
-  // Create a representation that is padded with zeros if needed.
-  if (decimal_point <= 0) {
-      // "0.00000decimal_rep".
-    result_builder->AddCharacter('0');
-    if (digits_after_point > 0) {
-      result_builder->AddCharacter('.');
-      result_builder->AddPadding('0', -decimal_point);
-      ASSERT(length <= digits_after_point - (-decimal_point));
-      result_builder->AddSubstring(decimal_digits, length);
-      int remaining_digits = digits_after_point - (-decimal_point) - length;
-      result_builder->AddPadding('0', remaining_digits);
-    }
-  } else if (decimal_point >= length) {
-    // "decimal_rep0000.00000" or "decimal_rep.0000"
-    result_builder->AddSubstring(decimal_digits, length);
-    result_builder->AddPadding('0', decimal_point - length);
-    if (digits_after_point > 0) {
-      result_builder->AddCharacter('.');
-      result_builder->AddPadding('0', digits_after_point);
-    }
-  } else {
-    // "decima.l_rep000"
-    ASSERT(digits_after_point > 0);
-    result_builder->AddSubstring(decimal_digits, decimal_point);
-    result_builder->AddCharacter('.');
-    ASSERT(length - decimal_point <= digits_after_point);
-    result_builder->AddSubstring(&decimal_digits[decimal_point],
-                                 length - decimal_point);
-    int remaining_digits = digits_after_point - (length - decimal_point);
-    result_builder->AddPadding('0', remaining_digits);
-  }
-  if (digits_after_point == 0) {
-    if ((flags_ & EMIT_TRAILING_DECIMAL_POINT) != 0) {
-      result_builder->AddCharacter('.');
-    }
-    if ((flags_ & EMIT_TRAILING_ZERO_AFTER_POINT) != 0) {
-      result_builder->AddCharacter('0');
-    }
-  }
-}
-
-
-bool DoubleToStringConverter::ToShortestIeeeNumber(
-    double value,
-    StringBuilder* result_builder,
-    DoubleToStringConverter::DtoaMode mode) const {
-  ASSERT(mode == SHORTEST || mode == SHORTEST_SINGLE);
-  if (Double(value).IsSpecial()) {
-    return HandleSpecialValues(value, result_builder);
-  }
-
-  int decimal_point;
-  bool sign;
-  const int kDecimalRepCapacity = kBase10MaximalLength + 1;
-  char decimal_rep[kDecimalRepCapacity];
-  int decimal_rep_length;
-
-  DoubleToAscii(value, mode, 0, decimal_rep, kDecimalRepCapacity,
-                &sign, &decimal_rep_length, &decimal_point);
-
-  bool unique_zero = (flags_ & UNIQUE_ZERO) != 0;
-  if (sign && (value != 0.0 || !unique_zero)) {
-    result_builder->AddCharacter('-');
-  }
-
-  int exponent = decimal_point - 1;
-  if ((decimal_in_shortest_low_ <= exponent) &&
-      (exponent < decimal_in_shortest_high_)) {
-    CreateDecimalRepresentation(decimal_rep, decimal_rep_length,
-                                decimal_point,
-                                Max(0, decimal_rep_length - decimal_point),
-                                result_builder);
-  } else {
-    CreateExponentialRepresentation(decimal_rep, decimal_rep_length, exponent,
-                                    result_builder);
-  }
-  return true;
-}
-
-
-bool DoubleToStringConverter::ToFixed(double value,
-                                      int requested_digits,
-                                      StringBuilder* result_builder) const {
-  ASSERT(kMaxFixedDigitsBeforePoint == 60);
-  const double kFirstNonFixed = 1e60;
-
-  if (Double(value).IsSpecial()) {
-    return HandleSpecialValues(value, result_builder);
-  }
-
-  if (requested_digits > kMaxFixedDigitsAfterPoint) return false;
-  if (value >= kFirstNonFixed || value <= -kFirstNonFixed) return false;
-
-  // Find a sufficiently precise decimal representation of n.
-  int decimal_point;
-  bool sign;
-  // Add space for the '\0' byte.
-  const int kDecimalRepCapacity =
-      kMaxFixedDigitsBeforePoint + kMaxFixedDigitsAfterPoint + 1;
-  char decimal_rep[kDecimalRepCapacity];
-  int decimal_rep_length;
-  DoubleToAscii(value, FIXED, requested_digits,
-                decimal_rep, kDecimalRepCapacity,
-                &sign, &decimal_rep_length, &decimal_point);
-
-  bool unique_zero = ((flags_ & UNIQUE_ZERO) != 0);
-  if (sign && (value != 0.0 || !unique_zero)) {
-    result_builder->AddCharacter('-');
-  }
-
-  CreateDecimalRepresentation(decimal_rep, decimal_rep_length, decimal_point,
-                              requested_digits, result_builder);
-  return true;
-}
-
-
-bool DoubleToStringConverter::ToExponential(
-    double value,
-    int requested_digits,
-    StringBuilder* result_builder) const {
-  if (Double(value).IsSpecial()) {
-    return HandleSpecialValues(value, result_builder);
-  }
-
-  if (requested_digits < -1) return false;
-  if (requested_digits > kMaxExponentialDigits) return false;
-
-  int decimal_point;
-  bool sign;
-  // Add space for digit before the decimal point and the '\0' character.
-  const int kDecimalRepCapacity = kMaxExponentialDigits + 2;
-  ASSERT(kDecimalRepCapacity > kBase10MaximalLength);
-  char decimal_rep[kDecimalRepCapacity];
-  int decimal_rep_length;
-
-  if (requested_digits == -1) {
-    DoubleToAscii(value, SHORTEST, 0,
-                  decimal_rep, kDecimalRepCapacity,
-                  &sign, &decimal_rep_length, &decimal_point);
-  } else {
-    DoubleToAscii(value, PRECISION, requested_digits + 1,
-                  decimal_rep, kDecimalRepCapacity,
-                  &sign, &decimal_rep_length, &decimal_point);
-    ASSERT(decimal_rep_length <= requested_digits + 1);
-
-    for (int i = decimal_rep_length; i < requested_digits + 1; ++i) {
-      decimal_rep[i] = '0';
-    }
-    decimal_rep_length = requested_digits + 1;
-  }
-
-  bool unique_zero = ((flags_ & UNIQUE_ZERO) != 0);
-  if (sign && (value != 0.0 || !unique_zero)) {
-    result_builder->AddCharacter('-');
-  }
-
-  int exponent = decimal_point - 1;
-  CreateExponentialRepresentation(decimal_rep,
-                                  decimal_rep_length,
-                                  exponent,
-                                  result_builder);
-  return true;
-}
-
-
-bool DoubleToStringConverter::ToPrecision(double value,
-                                          int precision,
-                                          StringBuilder* result_builder) const {
-  if (Double(value).IsSpecial()) {
-    return HandleSpecialValues(value, result_builder);
-  }
-
-  if (precision < kMinPrecisionDigits || precision > kMaxPrecisionDigits) {
-    return false;
-  }
-
-  // Find a sufficiently precise decimal representation of n.
-  int decimal_point;
-  bool sign;
-  // Add one for the terminating null character.
-  const int kDecimalRepCapacity = kMaxPrecisionDigits + 1;
-  char decimal_rep[kDecimalRepCapacity];
-  int decimal_rep_length;
-
-  DoubleToAscii(value, PRECISION, precision,
-                decimal_rep, kDecimalRepCapacity,
-                &sign, &decimal_rep_length, &decimal_point);
-  ASSERT(decimal_rep_length <= precision);
-
-  bool unique_zero = ((flags_ & UNIQUE_ZERO) != 0);
-  if (sign && (value != 0.0 || !unique_zero)) {
-    result_builder->AddCharacter('-');
-  }
-
-  // The exponent if we print the number as x.xxeyyy. That is with the
-  // decimal point after the first digit.
-  int exponent = decimal_point - 1;
-
-  int extra_zero = ((flags_ & EMIT_TRAILING_ZERO_AFTER_POINT) != 0) ? 1 : 0;
-  if ((-decimal_point + 1 > max_leading_padding_zeroes_in_precision_mode_) ||
-      (decimal_point - precision + extra_zero >
-       max_trailing_padding_zeroes_in_precision_mode_)) {
-    // Fill buffer to contain 'precision' digits.
-    // Usually the buffer is already at the correct length, but 'DoubleToAscii'
-    // is allowed to return less characters.
-    for (int i = decimal_rep_length; i < precision; ++i) {
-      decimal_rep[i] = '0';
-    }
-
-    CreateExponentialRepresentation(decimal_rep,
-                                    precision,
-                                    exponent,
-                                    result_builder);
-  } else {
-    CreateDecimalRepresentation(decimal_rep, decimal_rep_length, decimal_point,
-                                Max(0, precision - decimal_point),
-                                result_builder);
-  }
-  return true;
-}
-
-
-static BignumDtoaMode DtoaToBignumDtoaMode(
-    DoubleToStringConverter::DtoaMode dtoa_mode) {
-  switch (dtoa_mode) {
-    case DoubleToStringConverter::SHORTEST:  return BIGNUM_DTOA_SHORTEST;
-    case DoubleToStringConverter::SHORTEST_SINGLE:
-        return BIGNUM_DTOA_SHORTEST_SINGLE;
-    case DoubleToStringConverter::FIXED:     return BIGNUM_DTOA_FIXED;
-    case DoubleToStringConverter::PRECISION: return BIGNUM_DTOA_PRECISION;
-    default:
-      UNREACHABLE();
-  }
-}
-
-
-void DoubleToStringConverter::DoubleToAscii(double v,
-                                            DtoaMode mode,
-                                            int requested_digits,
-                                            char* buffer,
-                                            int buffer_length,
-                                            bool* sign,
-                                            int* length,
-                                            int* point) {
-  Vector<char> vector(buffer, buffer_length);
-  ASSERT(!Double(v).IsSpecial());
-  ASSERT(mode == SHORTEST || mode == SHORTEST_SINGLE || requested_digits >= 0);
-
-  if (Double(v).Sign() < 0) {
-    *sign = true;
-    v = -v;
-  } else {
-    *sign = false;
-  }
-
-  if (mode == PRECISION && requested_digits == 0) {
-    vector[0] = '\0';
-    *length = 0;
-    return;
-  }
-
-  if (v == 0) {
-    vector[0] = '0';
-    vector[1] = '\0';
-    *length = 1;
-    *point = 1;
-    return;
-  }
-
-  bool fast_worked;
-  switch (mode) {
-    case SHORTEST:
-      fast_worked = FastDtoa(v, FAST_DTOA_SHORTEST, 0, vector, length, point);
-      break;
-    case SHORTEST_SINGLE:
-      fast_worked = FastDtoa(v, FAST_DTOA_SHORTEST_SINGLE, 0,
-                             vector, length, point);
-      break;
-    case FIXED:
-      fast_worked = FastFixedDtoa(v, requested_digits, vector, length, point);
-      break;
-    case PRECISION:
-      fast_worked = FastDtoa(v, FAST_DTOA_PRECISION, requested_digits,
-                             vector, length, point);
-      break;
-    default:
-      fast_worked = false;
-      UNREACHABLE();
-  }
-  if (fast_worked) return;
-
-  // If the fast dtoa didn't succeed use the slower bignum version.
-  BignumDtoaMode bignum_mode = DtoaToBignumDtoaMode(mode);
-  BignumDtoa(v, bignum_mode, requested_digits, vector, length, point);
-  vector[*length] = '\0';
-}
-
-
-// Consumes the given substring from the iterator.
-// Returns false, if the substring does not match.
-template <class Iterator>
-static bool ConsumeSubString(Iterator* current,
-                             Iterator end,
-                             const char* substring) {
-  ASSERT(**current == *substring);
-  for (substring++; *substring != '\0'; substring++) {
-    ++*current;
-    if (*current == end || **current != *substring) return false;
-  }
-  ++*current;
-  return true;
-}
-
-
-// Maximum number of significant digits in decimal representation.
-// The longest possible double in decimal representation is
-// (2^53 - 1) * 2 ^ -1074 that is (2 ^ 53 - 1) * 5 ^ 1074 / 10 ^ 1074
-// (768 digits). If we parse a number whose first digits are equal to a
-// mean of 2 adjacent doubles (that could have up to 769 digits) the result
-// must be rounded to the bigger one unless the tail consists of zeros, so
-// we don't need to preserve all the digits.
-const int kMaxSignificantDigits = 772;
-
-
-static const char kWhitespaceTable7[] = { 32, 13, 10, 9, 11, 12 };
-static const int kWhitespaceTable7Length = ARRAY_SIZE(kWhitespaceTable7);
-
-
-static const uc16 kWhitespaceTable16[] = {
-  160, 8232, 8233, 5760, 6158, 8192, 8193, 8194, 8195,
-  8196, 8197, 8198, 8199, 8200, 8201, 8202, 8239, 8287, 12288, 65279
-};
-static const int kWhitespaceTable16Length = ARRAY_SIZE(kWhitespaceTable16);
-
-
-static bool isWhitespace(int x) {
-  if (x < 128) {
-    for (int i = 0; i < kWhitespaceTable7Length; i++) {
-      if (kWhitespaceTable7[i] == x) return true;
-    }
-  } else {
-    for (int i = 0; i < kWhitespaceTable16Length; i++) {
-      if (kWhitespaceTable16[i] == x) return true;
-    }
-  }
-  return false;
-}
-
-
-// Returns true if a nonspace found and false if the end has reached.
-template <class Iterator>
-static inline bool AdvanceToNonspace(Iterator* current, Iterator end) {
-  while (*current != end) {
-    if (!isWhitespace(**current)) return true;
-    ++*current;
-  }
-  return false;
-}
-
-
-static bool isDigit(int x, int radix) {
-  return (x >= '0' && x <= '9' && x < '0' + radix)
-      || (radix > 10 && x >= 'a' && x < 'a' + radix - 10)
-      || (radix > 10 && x >= 'A' && x < 'A' + radix - 10);
-}
-
-
-static double SignedZero(bool sign) {
-  return sign ? -0.0 : 0.0;
-}
-
-
-// Returns true if 'c' is a decimal digit that is valid for the given radix.
-//
-// The function is small and could be inlined, but VS2012 emitted a warning
-// because it constant-propagated the radix and concluded that the last
-// condition was always true. By moving it into a separate function the
-// compiler wouldn't warn anymore.
-static bool IsDecimalDigitForRadix(int c, int radix) {
-  return '0' <= c && c <= '9' && (c - '0') < radix;
-}
-
-// Returns true if 'c' is a character digit that is valid for the given radix.
-// The 'a_character' should be 'a' or 'A'.
-//
-// The function is small and could be inlined, but VS2012 emitted a warning
-// because it constant-propagated the radix and concluded that the first
-// condition was always false. By moving it into a separate function the
-// compiler wouldn't warn anymore.
-static bool IsCharacterDigitForRadix(int c, int radix, char a_character) {
-  return radix > 10 && c >= a_character && c < a_character + radix - 10;
-}
-
-
-// Parsing integers with radix 2, 4, 8, 16, 32. Assumes current != end.
-template <int radix_log_2, class Iterator>
-static double RadixStringToIeee(Iterator* current,
-                                Iterator end,
-                                bool sign,
-                                bool allow_trailing_junk,
-                                double junk_string_value,
-                                bool read_as_double,
-                                bool* result_is_junk) {
-  ASSERT(*current != end);
-
-  const int kDoubleSize = Double::kSignificandSize;
-  const int kSingleSize = Single::kSignificandSize;
-  const int kSignificandSize = read_as_double? kDoubleSize: kSingleSize;
-
-  *result_is_junk = true;
-
-  // Skip leading 0s.
-  while (**current == '0') {
-    ++(*current);
-    if (*current == end) {
-      *result_is_junk = false;
-      return SignedZero(sign);
-    }
-  }
-
-  int64_t number = 0;
-  int exponent = 0;
-  const int radix = (1 << radix_log_2);
-
-  do {
-    int digit;
-    if (IsDecimalDigitForRadix(**current, radix)) {
-      digit = static_cast<char>(**current) - '0';
-    } else if (IsCharacterDigitForRadix(**current, radix, 'a')) {
-      digit = static_cast<char>(**current) - 'a' + 10;
-    } else if (IsCharacterDigitForRadix(**current, radix, 'A')) {
-      digit = static_cast<char>(**current) - 'A' + 10;
-    } else {
-      if (allow_trailing_junk || !AdvanceToNonspace(current, end)) {
-        break;
-      } else {
-        return junk_string_value;
-      }
-    }
-
-    number = number * radix + digit;
-    int overflow = static_cast<int>(number >> kSignificandSize);
-    if (overflow != 0) {
-      // Overflow occurred. Need to determine which direction to round the
-      // result.
-      int overflow_bits_count = 1;
-      while (overflow > 1) {
-        overflow_bits_count++;
-        overflow >>= 1;
-      }
-
-      int dropped_bits_mask = ((1 << overflow_bits_count) - 1);
-      int dropped_bits = static_cast<int>(number) & dropped_bits_mask;
-      number >>= overflow_bits_count;
-      exponent = overflow_bits_count;
-
-      bool zero_tail = true;
-      for (;;) {
-        ++(*current);
-        if (*current == end || !isDigit(**current, radix)) break;
-        zero_tail = zero_tail && **current == '0';
-        exponent += radix_log_2;
-      }
-
-      if (!allow_trailing_junk && AdvanceToNonspace(current, end)) {
-        return junk_string_value;
-      }
-
-      int middle_value = (1 << (overflow_bits_count - 1));
-      if (dropped_bits > middle_value) {
-        number++;  // Rounding up.
-      } else if (dropped_bits == middle_value) {
-        // Rounding to even to consistency with decimals: half-way case rounds
-        // up if significant part is odd and down otherwise.
-        if ((number & 1) != 0 || !zero_tail) {
-          number++;  // Rounding up.
-        }
-      }
-
-      // Rounding up may cause overflow.
-      if ((number & ((int64_t)1 << kSignificandSize)) != 0) {
-        exponent++;
-        number >>= 1;
-      }
-      break;
-    }
-    ++(*current);
-  } while (*current != end);
-
-  ASSERT(number < ((int64_t)1 << kSignificandSize));
-  ASSERT(static_cast<int64_t>(static_cast<double>(number)) == number);
-
-  *result_is_junk = false;
-
-  if (exponent == 0) {
-    if (sign) {
-      if (number == 0) return -0.0;
-      number = -number;
-    }
-    return static_cast<double>(number);
-  }
-
-  ASSERT(number != 0);
-  return Double(DiyFp(number, exponent)).value();
-}
-
-
-template <class Iterator>
-double StringToDoubleConverter::StringToIeee(
-    Iterator input,
-    int length,
-    bool read_as_double,
-    int* processed_characters_count) const {
-  Iterator current = input;
-  Iterator end = input + length;
-
-  *processed_characters_count = 0;
-
-  const bool allow_trailing_junk = (flags_ & ALLOW_TRAILING_JUNK) != 0;
-  const bool allow_leading_spaces = (flags_ & ALLOW_LEADING_SPACES) != 0;
-  const bool allow_trailing_spaces = (flags_ & ALLOW_TRAILING_SPACES) != 0;
-  const bool allow_spaces_after_sign = (flags_ & ALLOW_SPACES_AFTER_SIGN) != 0;
-
-  // To make sure that iterator dereferencing is valid the following
-  // convention is used:
-  // 1. Each '++current' statement is followed by check for equality to 'end'.
-  // 2. If AdvanceToNonspace returned false then current == end.
-  // 3. If 'current' becomes equal to 'end' the function returns or goes to
-  // 'parsing_done'.
-  // 4. 'current' is not dereferenced after the 'parsing_done' label.
-  // 5. Code before 'parsing_done' may rely on 'current != end'.
-  if (current == end) return empty_string_value_;
-
-  if (allow_leading_spaces || allow_trailing_spaces) {
-    if (!AdvanceToNonspace(&current, end)) {
-      *processed_characters_count = static_cast<int>(current - input);
-      return empty_string_value_;
-    }
-    if (!allow_leading_spaces && (input != current)) {
-      // No leading spaces allowed, but AdvanceToNonspace moved forward.
-      return junk_string_value_;
-    }
-  }
-
-  // The longest form of simplified number is: "-<significant digits>.1eXXX\0".
-  const int kBufferSize = kMaxSignificantDigits + 10;
-  char buffer[kBufferSize];  // NOLINT: size is known at compile time.
-  int buffer_pos = 0;
-
-  // Exponent will be adjusted if insignificant digits of the integer part
-  // or insignificant leading zeros of the fractional part are dropped.
-  int exponent = 0;
-  int significant_digits = 0;
-  int insignificant_digits = 0;
-  bool nonzero_digit_dropped = false;
-
-  bool sign = false;
-
-  if (*current == '+' || *current == '-') {
-    sign = (*current == '-');
-    ++current;
-    Iterator next_non_space = current;
-    // Skip following spaces (if allowed).
-    if (!AdvanceToNonspace(&next_non_space, end)) return junk_string_value_;
-    if (!allow_spaces_after_sign && (current != next_non_space)) {
-      return junk_string_value_;
-    }
-    current = next_non_space;
-  }
-
-  if (infinity_symbol_ != NULL) {
-    if (*current == infinity_symbol_[0]) {
-      if (!ConsumeSubString(&current, end, infinity_symbol_)) {
-        return junk_string_value_;
-      }
-
-      if (!(allow_trailing_spaces || allow_trailing_junk) && (current != end)) {
-        return junk_string_value_;
-      }
-      if (!allow_trailing_junk && AdvanceToNonspace(&current, end)) {
-        return junk_string_value_;
-      }
-
-      ASSERT(buffer_pos == 0);
-      *processed_characters_count = static_cast<int>(current - input);
-      return sign ? -Double::Infinity() : Double::Infinity();
-    }
-  }
-
-  if (nan_symbol_ != NULL) {
-    if (*current == nan_symbol_[0]) {
-      if (!ConsumeSubString(&current, end, nan_symbol_)) {
-        return junk_string_value_;
-      }
-
-      if (!(allow_trailing_spaces || allow_trailing_junk) && (current != end)) {
-        return junk_string_value_;
-      }
-      if (!allow_trailing_junk && AdvanceToNonspace(&current, end)) {
-        return junk_string_value_;
-      }
-
-      ASSERT(buffer_pos == 0);
-      *processed_characters_count = static_cast<int>(current - input);
-      return sign ? -Double::NaN() : Double::NaN();
-    }
-  }
-
-  bool leading_zero = false;
-  if (*current == '0') {
-    ++current;
-    if (current == end) {
-      *processed_characters_count = static_cast<int>(current - input);
-      return SignedZero(sign);
-    }
-
-    leading_zero = true;
-
-    // It could be hexadecimal value.
-    if ((flags_ & ALLOW_HEX) && (*current == 'x' || *current == 'X')) {
-      ++current;
-      if (current == end || !isDigit(*current, 16)) {
-        return junk_string_value_;  // "0x".
-      }
-
-      bool result_is_junk;
-      double result = RadixStringToIeee<4>(&current,
-                                           end,
-                                           sign,
-                                           allow_trailing_junk,
-                                           junk_string_value_,
-                                           read_as_double,
-                                           &result_is_junk);
-      if (!result_is_junk) {
-        if (allow_trailing_spaces) AdvanceToNonspace(&current, end);
-        *processed_characters_count = static_cast<int>(current - input);
-      }
-      return result;
-    }
-
-    // Ignore leading zeros in the integer part.
-    while (*current == '0') {
-      ++current;
-      if (current == end) {
-        *processed_characters_count = static_cast<int>(current - input);
-        return SignedZero(sign);
-      }
-    }
-  }
-
-  bool octal = leading_zero && (flags_ & ALLOW_OCTALS) != 0;
-
-  // Copy significant digits of the integer part (if any) to the buffer.
-  while (*current >= '0' && *current <= '9') {
-    if (significant_digits < kMaxSignificantDigits) {
-      ASSERT(buffer_pos < kBufferSize);
-      buffer[buffer_pos++] = static_cast<char>(*current);
-      significant_digits++;
-      // Will later check if it's an octal in the buffer.
-    } else {
-      insignificant_digits++;  // Move the digit into the exponential part.
-      nonzero_digit_dropped = nonzero_digit_dropped || *current != '0';
-    }
-    octal = octal && *current < '8';
-    ++current;
-    if (current == end) goto parsing_done;
-  }
-
-  if (significant_digits == 0) {
-    octal = false;
-  }
-
-  if (*current == '.') {
-    if (octal && !allow_trailing_junk) return junk_string_value_;
-    if (octal) goto parsing_done;
-
-    ++current;
-    if (current == end) {
-      if (significant_digits == 0 && !leading_zero) {
-        return junk_string_value_;
-      } else {
-        goto parsing_done;
-      }
-    }
-
-    if (significant_digits == 0) {
-      // octal = false;
-      // Integer part consists of 0 or is absent. Significant digits start after
-      // leading zeros (if any).
-      while (*current == '0') {
-        ++current;
-        if (current == end) {
-          *processed_characters_count = static_cast<int>(current - input);
-          return SignedZero(sign);
-        }
-        exponent--;  // Move this 0 into the exponent.
-      }
-    }
-
-    // There is a fractional part.
-    // We don't emit a '.', but adjust the exponent instead.
-    while (*current >= '0' && *current <= '9') {
-      if (significant_digits < kMaxSignificantDigits) {
-        ASSERT(buffer_pos < kBufferSize);
-        buffer[buffer_pos++] = static_cast<char>(*current);
-        significant_digits++;
-        exponent--;
-      } else {
-        // Ignore insignificant digits in the fractional part.
-        nonzero_digit_dropped = nonzero_digit_dropped || *current != '0';
-      }
-      ++current;
-      if (current == end) goto parsing_done;
-    }
-  }
-
-  if (!leading_zero && exponent == 0 && significant_digits == 0) {
-    // If leading_zeros is true then the string contains zeros.
-    // If exponent < 0 then string was [+-]\.0*...
-    // If significant_digits != 0 the string is not equal to 0.
-    // Otherwise there are no digits in the string.
-    return junk_string_value_;
-  }
-
-  // Parse exponential part.
-  if (*current == 'e' || *current == 'E') {
-    if (octal && !allow_trailing_junk) return junk_string_value_;
-    if (octal) goto parsing_done;
-    ++current;
-    if (current == end) {
-      if (allow_trailing_junk) {
-        goto parsing_done;
-      } else {
-        return junk_string_value_;
-      }
-    }
-    char sign = '+';
-    if (*current == '+' || *current == '-') {
-      sign = static_cast<char>(*current);
-      ++current;
-      if (current == end) {
-        if (allow_trailing_junk) {
-          goto parsing_done;
-        } else {
-          return junk_string_value_;
-        }
-      }
-    }
-
-    if (current == end || *current < '0' || *current > '9') {
-      if (allow_trailing_junk) {
-        goto parsing_done;
-      } else {
-        return junk_string_value_;
-      }
-    }
-
-    const int max_exponent = INT_MAX / 2;
-    ASSERT(-max_exponent / 2 <= exponent && exponent <= max_exponent / 2);
-    int num = 0;
-    do {
-      // Check overflow.
-      int digit = *current - '0';
-      if (num >= max_exponent / 10
-          && !(num == max_exponent / 10 && digit <= max_exponent % 10)) {
-        num = max_exponent;
-      } else {
-        num = num * 10 + digit;
-      }
-      ++current;
-    } while (current != end && *current >= '0' && *current <= '9');
-
-    exponent += (sign == '-' ? -num : num);
-  }
-
-  if (!(allow_trailing_spaces || allow_trailing_junk) && (current != end)) {
-    return junk_string_value_;
-  }
-  if (!allow_trailing_junk && AdvanceToNonspace(&current, end)) {
-    return junk_string_value_;
-  }
-  if (allow_trailing_spaces) {
-    AdvanceToNonspace(&current, end);
-  }
-
-  parsing_done:
-  exponent += insignificant_digits;
-
-  if (octal) {
-    double result;
-    bool result_is_junk;
-    char* start = buffer;
-    result = RadixStringToIeee<3>(&start,
-                                  buffer + buffer_pos,
-                                  sign,
-                                  allow_trailing_junk,
-                                  junk_string_value_,
-                                  read_as_double,
-                                  &result_is_junk);
-    ASSERT(!result_is_junk);
-    *processed_characters_count = static_cast<int>(current - input);
-    return result;
-  }
-
-  if (nonzero_digit_dropped) {
-    buffer[buffer_pos++] = '1';
-    exponent--;
-  }
-
-  ASSERT(buffer_pos < kBufferSize);
-  buffer[buffer_pos] = '\0';
-
-  double converted;
-  if (read_as_double) {
-    converted = Strtod(Vector<const char>(buffer, buffer_pos), exponent);
-  } else {
-    converted = Strtof(Vector<const char>(buffer, buffer_pos), exponent);
-  }
-  *processed_characters_count = static_cast<int>(current - input);
-  return sign? -converted: converted;
-}
-
-
-double StringToDoubleConverter::StringToDouble(
-    const char* buffer,
-    int length,
-    int* processed_characters_count) const {
-  return StringToIeee(buffer, length, true, processed_characters_count);
-}
-
-
-double StringToDoubleConverter::StringToDouble(
-    const uc16* buffer,
-    int length,
-    int* processed_characters_count) const {
-  return StringToIeee(buffer, length, true, processed_characters_count);
-}
-
-
-float StringToDoubleConverter::StringToFloat(
-    const char* buffer,
-    int length,
-    int* processed_characters_count) const {
-  return static_cast<float>(StringToIeee(buffer, length, false,
-                                         processed_characters_count));
-}
-
-
-float StringToDoubleConverter::StringToFloat(
-    const uc16* buffer,
-    int length,
-    int* processed_characters_count) const {
-  return static_cast<float>(StringToIeee(buffer, length, false,
-                                         processed_characters_count));
-}
-
-}  // namespace double_conversion
diff --git a/src/3rdparty/double-conversion/double-conversion.h b/src/3rdparty/double-conversion/double-conversion.h
deleted file mode 100644
index 6bdfa8d25d..0000000000
--- a/src/3rdparty/double-conversion/double-conversion.h
+++ /dev/null
@@ -1,543 +0,0 @@
-// Copyright 2012 the V8 project authors. All rights reserved.
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-//       notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-//       copyright notice, this list of conditions and the following
-//       disclaimer in the documentation and/or other materials provided
-//       with the distribution.
-//     * Neither the name of Google Inc. nor the names of its
-//       contributors may be used to endorse or promote products derived
-//       from this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-#ifndef DOUBLE_CONVERSION_DOUBLE_CONVERSION_H_
-#define DOUBLE_CONVERSION_DOUBLE_CONVERSION_H_
-
-#include "utils.h"
-
-namespace double_conversion {
-
-class DoubleToStringConverter {
- public:
-  // When calling ToFixed with a double > 10^kMaxFixedDigitsBeforePoint
-  // or a requested_digits parameter > kMaxFixedDigitsAfterPoint then the
-  // function returns false.
-  static const int kMaxFixedDigitsBeforePoint = 60;
-  static const int kMaxFixedDigitsAfterPoint = 60;
-
-  // When calling ToExponential with a requested_digits
-  // parameter > kMaxExponentialDigits then the function returns false.
-  static const int kMaxExponentialDigits = 120;
-
-  // When calling ToPrecision with a requested_digits
-  // parameter < kMinPrecisionDigits or requested_digits > kMaxPrecisionDigits
-  // then the function returns false.
-  static const int kMinPrecisionDigits = 1;
-  static const int kMaxPrecisionDigits = 120;
-
-  enum Flags {
-    NO_FLAGS = 0,
-    EMIT_POSITIVE_EXPONENT_SIGN = 1,
-    EMIT_TRAILING_DECIMAL_POINT = 2,
-    EMIT_TRAILING_ZERO_AFTER_POINT = 4,
-    UNIQUE_ZERO = 8
-  };
-
-  // Flags should be a bit-or combination of the possible Flags-enum.
-  //  - NO_FLAGS: no special flags.
-  //  - EMIT_POSITIVE_EXPONENT_SIGN: when the number is converted into exponent
-  //    form, emits a '+' for positive exponents. Example: 1.2e+2.
-  //  - EMIT_TRAILING_DECIMAL_POINT: when the input number is an integer and is
-  //    converted into decimal format then a trailing decimal point is appended.
-  //    Example: 2345.0 is converted to "2345.".
-  //  - EMIT_TRAILING_ZERO_AFTER_POINT: in addition to a trailing decimal point
-  //    emits a trailing '0'-character. This flag requires the
-  //    EXMIT_TRAILING_DECIMAL_POINT flag.
-  //    Example: 2345.0 is converted to "2345.0".
-  //  - UNIQUE_ZERO: "-0.0" is converted to "0.0".
-  //
-  // Infinity symbol and nan_symbol provide the string representation for these
-  // special values. If the string is NULL and the special value is encountered
-  // then the conversion functions return false.
-  //
-  // The exponent_character is used in exponential representations. It is
-  // usually 'e' or 'E'.
-  //
-  // When converting to the shortest representation the converter will
-  // represent input numbers in decimal format if they are in the interval
-  // [10^decimal_in_shortest_low; 10^decimal_in_shortest_high[
-  //    (lower boundary included, greater boundary excluded).
-  // Example: with decimal_in_shortest_low = -6 and
-  //               decimal_in_shortest_high = 21:
-  //   ToShortest(0.000001)  -> "0.000001"
-  //   ToShortest(0.0000001) -> "1e-7"
-  //   ToShortest(111111111111111111111.0)  -> "111111111111111110000"
-  //   ToShortest(100000000000000000000.0)  -> "100000000000000000000"
-  //   ToShortest(1111111111111111111111.0) -> "1.1111111111111111e+21"
-  //
-  // When converting to precision mode the converter may add
-  // max_leading_padding_zeroes before returning the number in exponential
-  // format.
-  // Example with max_leading_padding_zeroes_in_precision_mode = 6.
-  //   ToPrecision(0.0000012345, 2) -> "0.0000012"
-  //   ToPrecision(0.00000012345, 2) -> "1.2e-7"
-  // Similarily the converter may add up to
-  // max_trailing_padding_zeroes_in_precision_mode in precision mode to avoid
-  // returning an exponential representation. A zero added by the
-  // EMIT_TRAILING_ZERO_AFTER_POINT flag is counted for this limit.
-  // Examples for max_trailing_padding_zeroes_in_precision_mode = 1:
-  //   ToPrecision(230.0, 2) -> "230"
-  //   ToPrecision(230.0, 2) -> "230."  with EMIT_TRAILING_DECIMAL_POINT.
-  //   ToPrecision(230.0, 2) -> "2.3e2" with EMIT_TRAILING_ZERO_AFTER_POINT.
-  DoubleToStringConverter(int flags,
-                          const char* infinity_symbol,
-                          const char* nan_symbol,
-                          char exponent_character,
-                          int decimal_in_shortest_low,
-                          int decimal_in_shortest_high,
-                          int max_leading_padding_zeroes_in_precision_mode,
-                          int max_trailing_padding_zeroes_in_precision_mode)
-      : flags_(flags),
-        infinity_symbol_(infinity_symbol),
-        nan_symbol_(nan_symbol),
-        exponent_character_(exponent_character),
-        decimal_in_shortest_low_(decimal_in_shortest_low),
-        decimal_in_shortest_high_(decimal_in_shortest_high),
-        max_leading_padding_zeroes_in_precision_mode_(
-            max_leading_padding_zeroes_in_precision_mode),
-        max_trailing_padding_zeroes_in_precision_mode_(
-            max_trailing_padding_zeroes_in_precision_mode) {
-    // When 'trailing zero after the point' is set, then 'trailing point'
-    // must be set too.
-    ASSERT(((flags & EMIT_TRAILING_DECIMAL_POINT) != 0) ||
-        !((flags & EMIT_TRAILING_ZERO_AFTER_POINT) != 0));
-  }
-
-  // Returns a converter following the EcmaScript specification.
-  static const DoubleToStringConverter& EcmaScriptConverter();
-
-  // Computes the shortest string of digits that correctly represent the input
-  // number. Depending on decimal_in_shortest_low and decimal_in_shortest_high
-  // (see constructor) it then either returns a decimal representation, or an
-  // exponential representation.
-  // Example with decimal_in_shortest_low = -6,
-  //              decimal_in_shortest_high = 21,
-  //              EMIT_POSITIVE_EXPONENT_SIGN activated, and
-  //              EMIT_TRAILING_DECIMAL_POINT deactived:
-  //   ToShortest(0.000001)  -> "0.000001"
-  //   ToShortest(0.0000001) -> "1e-7"
-  //   ToShortest(111111111111111111111.0)  -> "111111111111111110000"
-  //   ToShortest(100000000000000000000.0)  -> "100000000000000000000"
-  //   ToShortest(1111111111111111111111.0) -> "1.1111111111111111e+21"
-  //
-  // Note: the conversion may round the output if the returned string
-  // is accurate enough to uniquely identify the input-number.
-  // For example the most precise representation of the double 9e59 equals
-  // "899999999999999918767229449717619953810131273674690656206848", but
-  // the converter will return the shorter (but still correct) "9e59".
-  //
-  // Returns true if the conversion succeeds. The conversion always succeeds
-  // except when the input value is special and no infinity_symbol or
-  // nan_symbol has been given to the constructor.
-  bool ToShortest(double value, StringBuilder* result_builder) const {
-    return ToShortestIeeeNumber(value, result_builder, SHORTEST);
-  }
-
-  // Same as ToShortest, but for single-precision floats.
-  bool ToShortestSingle(float value, StringBuilder* result_builder) const {
-    return ToShortestIeeeNumber(value, result_builder, SHORTEST_SINGLE);
-  }
-
-
-  // Computes a decimal representation with a fixed number of digits after the
-  // decimal point. The last emitted digit is rounded.
-  //
-  // Examples:
-  //   ToFixed(3.12, 1) -> "3.1"
-  //   ToFixed(3.1415, 3) -> "3.142"
-  //   ToFixed(1234.56789, 4) -> "1234.5679"
-  //   ToFixed(1.23, 5) -> "1.23000"
-  //   ToFixed(0.1, 4) -> "0.1000"
-  //   ToFixed(1e30, 2) -> "1000000000000000019884624838656.00"
-  //   ToFixed(0.1, 30) -> "0.100000000000000005551115123126"
-  //   ToFixed(0.1, 17) -> "0.10000000000000001"
-  //
-  // If requested_digits equals 0, then the tail of the result depends on
-  // the EMIT_TRAILING_DECIMAL_POINT and EMIT_TRAILING_ZERO_AFTER_POINT.
-  // Examples, for requested_digits == 0,
-  //   let EMIT_TRAILING_DECIMAL_POINT and EMIT_TRAILING_ZERO_AFTER_POINT be
-  //    - false and false: then 123.45 -> 123
-  //                             0.678 -> 1
-  //    - true and false: then 123.45 -> 123.
-  //                            0.678 -> 1.
-  //    - true and true: then 123.45 -> 123.0
-  //                           0.678 -> 1.0
-  //
-  // Returns true if the conversion succeeds. The conversion always succeeds
-  // except for the following cases:
-  //   - the input value is special and no infinity_symbol or nan_symbol has
-  //     been provided to the constructor,
-  //   - 'value' > 10^kMaxFixedDigitsBeforePoint, or
-  //   - 'requested_digits' > kMaxFixedDigitsAfterPoint.
-  // The last two conditions imply that the result will never contain more than
-  // 1 + kMaxFixedDigitsBeforePoint + 1 + kMaxFixedDigitsAfterPoint characters
-  // (one additional character for the sign, and one for the decimal point).
-  bool ToFixed(double value,
-               int requested_digits,
-               StringBuilder* result_builder) const;
-
-  // Computes a representation in exponential format with requested_digits
-  // after the decimal point. The last emitted digit is rounded.
-  // If requested_digits equals -1, then the shortest exponential representation
-  // is computed.
-  //
-  // Examples with EMIT_POSITIVE_EXPONENT_SIGN deactivated, and
-  //               exponent_character set to 'e'.
-  //   ToExponential(3.12, 1) -> "3.1e0"
-  //   ToExponential(5.0, 3) -> "5.000e0"
-  //   ToExponential(0.001, 2) -> "1.00e-3"
-  //   ToExponential(3.1415, -1) -> "3.1415e0"
-  //   ToExponential(3.1415, 4) -> "3.1415e0"
-  //   ToExponential(3.1415, 3) -> "3.142e0"
-  //   ToExponential(123456789000000, 3) -> "1.235e14"
-  //   ToExponential(1000000000000000019884624838656.0, -1) -> "1e30"
-  //   ToExponential(1000000000000000019884624838656.0, 32) ->
-  //                     "1.00000000000000001988462483865600e30"
-  //   ToExponential(1234, 0) -> "1e3"
-  //
-  // Returns true if the conversion succeeds. The conversion always succeeds
-  // except for the following cases:
-  //   - the input value is special and no infinity_symbol or nan_symbol has
-  //     been provided to the constructor,
-  //   - 'requested_digits' > kMaxExponentialDigits.
-  // The last condition implies that the result will never contain more than
-  // kMaxExponentialDigits + 8 characters (the sign, the digit before the
-  // decimal point, the decimal point, the exponent character, the
-  // exponent's sign, and at most 3 exponent digits).
-  bool ToExponential(double value,
-                     int requested_digits,
-                     StringBuilder* result_builder) const;
-
-  // Computes 'precision' leading digits of the given 'value' and returns them
-  // either in exponential or decimal format, depending on
-  // max_{leading|trailing}_padding_zeroes_in_precision_mode (given to the
-  // constructor).
-  // The last computed digit is rounded.
-  //
-  // Example with max_leading_padding_zeroes_in_precision_mode = 6.
-  //   ToPrecision(0.0000012345, 2) -> "0.0000012"
-  //   ToPrecision(0.00000012345, 2) -> "1.2e-7"
-  // Similarily the converter may add up to
-  // max_trailing_padding_zeroes_in_precision_mode in precision mode to avoid
-  // returning an exponential representation. A zero added by the
-  // EMIT_TRAILING_ZERO_AFTER_POINT flag is counted for this limit.
-  // Examples for max_trailing_padding_zeroes_in_precision_mode = 1:
-  //   ToPrecision(230.0, 2) -> "230"
-  //   ToPrecision(230.0, 2) -> "230."  with EMIT_TRAILING_DECIMAL_POINT.
-  //   ToPrecision(230.0, 2) -> "2.3e2" with EMIT_TRAILING_ZERO_AFTER_POINT.
-  // Examples for max_trailing_padding_zeroes_in_precision_mode = 3, and no
-  //    EMIT_TRAILING_ZERO_AFTER_POINT:
-  //   ToPrecision(123450.0, 6) -> "123450"
-  //   ToPrecision(123450.0, 5) -> "123450"
-  //   ToPrecision(123450.0, 4) -> "123500"
-  //   ToPrecision(123450.0, 3) -> "123000"
-  //   ToPrecision(123450.0, 2) -> "1.2e5"
-  //
-  // Returns true if the conversion succeeds. The conversion always succeeds
-  // except for the following cases:
-  //   - the input value is special and no infinity_symbol or nan_symbol has
-  //     been provided to the constructor,
-  //   - precision < kMinPericisionDigits
-  //   - precision > kMaxPrecisionDigits
-  // The last condition implies that the result will never contain more than
-  // kMaxPrecisionDigits + 7 characters (the sign, the decimal point, the
-  // exponent character, the exponent's sign, and at most 3 exponent digits).
-  bool ToPrecision(double value,
-                   int precision,
-                   StringBuilder* result_builder) const;
-
-  enum DtoaMode {
-    // Produce the shortest correct representation.
-    // For example the output of 0.299999999999999988897 is (the less accurate
-    // but correct) 0.3.
-    SHORTEST,
-    // Same as SHORTEST, but for single-precision floats.
-    SHORTEST_SINGLE,
-    // Produce a fixed number of digits after the decimal point.
-    // For instance fixed(0.1, 4) becomes 0.1000
-    // If the input number is big, the output will be big.
-    FIXED,
-    // Fixed number of digits (independent of the decimal point).
-    PRECISION
-  };
-
-  // The maximal number of digits that are needed to emit a double in base 10.
-  // A higher precision can be achieved by using more digits, but the shortest
-  // accurate representation of any double will never use more digits than
-  // kBase10MaximalLength.
-  // Note that DoubleToAscii null-terminates its input. So the given buffer
-  // should be at least kBase10MaximalLength + 1 characters long.
-  static const int kBase10MaximalLength = 17;
-
-  // Converts the given double 'v' to ascii. 'v' must not be NaN, +Infinity, or
-  // -Infinity. In SHORTEST_SINGLE-mode this restriction also applies to 'v'
-  // after it has been casted to a single-precision float. That is, in this
-  // mode static_cast<float>(v) must not be NaN, +Infinity or -Infinity.
-  //
-  // The result should be interpreted as buffer * 10^(point-length).
-  //
-  // The output depends on the given mode:
-  //  - SHORTEST: produce the least amount of digits for which the internal
-  //   identity requirement is still satisfied. If the digits are printed
-  //   (together with the correct exponent) then reading this number will give
-  //   'v' again. The buffer will choose the representation that is closest to
-  //   'v'. If there are two at the same distance, than the one farther away
-  //   from 0 is chosen (halfway cases - ending with 5 - are rounded up).
-  //   In this mode the 'requested_digits' parameter is ignored.
-  //  - SHORTEST_SINGLE: same as SHORTEST but with single-precision.
-  //  - FIXED: produces digits necessary to print a given number with
-  //   'requested_digits' digits after the decimal point. The produced digits
-  //   might be too short in which case the caller has to fill the remainder
-  //   with '0's.
-  //   Example: toFixed(0.001, 5) is allowed to return buffer="1", point=-2.
-  //   Halfway cases are rounded towards +/-Infinity (away from 0). The call
-  //   toFixed(0.15, 2) thus returns buffer="2", point=0.
-  //   The returned buffer may contain digits that would be truncated from the
-  //   shortest representation of the input.
-  //  - PRECISION: produces 'requested_digits' where the first digit is not '0'.
-  //   Even though the length of produced digits usually equals
-  //   'requested_digits', the function is allowed to return fewer digits, in
-  //   which case the caller has to fill the missing digits with '0's.
-  //   Halfway cases are again rounded away from 0.
-  // DoubleToAscii expects the given buffer to be big enough to hold all
-  // digits and a terminating null-character. In SHORTEST-mode it expects a
-  // buffer of at least kBase10MaximalLength + 1. In all other modes the
-  // requested_digits parameter and the padding-zeroes limit the size of the
-  // output. Don't forget the decimal point, the exponent character and the
-  // terminating null-character when computing the maximal output size.
-  // The given length is only used in debug mode to ensure the buffer is big
-  // enough.
-  static void DoubleToAscii(double v,
-                            DtoaMode mode,
-                            int requested_digits,
-                            char* buffer,
-                            int buffer_length,
-                            bool* sign,
-                            int* length,
-                            int* point);
-
- private:
-  // Implementation for ToShortest and ToShortestSingle.
-  bool ToShortestIeeeNumber(double value,
-                            StringBuilder* result_builder,
-                            DtoaMode mode) const;
-
-  // If the value is a special value (NaN or Infinity) constructs the
-  // corresponding string using the configured infinity/nan-symbol.
-  // If either of them is NULL or the value is not special then the
-  // function returns false.
-  bool HandleSpecialValues(double value, StringBuilder* result_builder) const;
-  // Constructs an exponential representation (i.e. 1.234e56).
-  // The given exponent assumes a decimal point after the first decimal digit.
-  void CreateExponentialRepresentation(const char* decimal_digits,
-                                       int length,
-                                       int exponent,
-                                       StringBuilder* result_builder) const;
-  // Creates a decimal representation (i.e 1234.5678).
-  void CreateDecimalRepresentation(const char* decimal_digits,
-                                   int length,
-                                   int decimal_point,
-                                   int digits_after_point,
-                                   StringBuilder* result_builder) const;
-
-  const int flags_;
-  const char* const infinity_symbol_;
-  const char* const nan_symbol_;
-  const char exponent_character_;
-  const int decimal_in_shortest_low_;
-  const int decimal_in_shortest_high_;
-  const int max_leading_padding_zeroes_in_precision_mode_;
-  const int max_trailing_padding_zeroes_in_precision_mode_;
-
-  DISALLOW_IMPLICIT_CONSTRUCTORS(DoubleToStringConverter);
-};
-
-
-class StringToDoubleConverter {
- public:
-  // Enumeration for allowing octals and ignoring junk when converting
-  // strings to numbers.
-  enum Flags {
-    NO_FLAGS = 0,
-    ALLOW_HEX = 1,
-    ALLOW_OCTALS = 2,
-    ALLOW_TRAILING_JUNK = 4,
-    ALLOW_LEADING_SPACES = 8,
-    ALLOW_TRAILING_SPACES = 16,
-    ALLOW_SPACES_AFTER_SIGN = 32
-  };
-
-  // Flags should be a bit-or combination of the possible Flags-enum.
-  //  - NO_FLAGS: no special flags.
-  //  - ALLOW_HEX: recognizes the prefix "0x". Hex numbers may only be integers.
-  //      Ex: StringToDouble("0x1234") -> 4660.0
-  //          In StringToDouble("0x1234.56") the characters ".56" are trailing
-  //          junk. The result of the call is hence dependent on
-  //          the ALLOW_TRAILING_JUNK flag and/or the junk value.
-  //      With this flag "0x" is a junk-string. Even with ALLOW_TRAILING_JUNK,
-  //      the string will not be parsed as "0" followed by junk.
-  //
-  //  - ALLOW_OCTALS: recognizes the prefix "0" for octals:
-  //      If a sequence of octal digits starts with '0', then the number is
-  //      read as octal integer. Octal numbers may only be integers.
-  //      Ex: StringToDouble("01234") -> 668.0
-  //          StringToDouble("012349") -> 12349.0  // Not a sequence of octal
-  //                                               // digits.
-  //          In StringToDouble("01234.56") the characters ".56" are trailing
-  //          junk. The result of the call is hence dependent on
-  //          the ALLOW_TRAILING_JUNK flag and/or the junk value.
-  //          In StringToDouble("01234e56") the characters "e56" are trailing
-  //          junk, too.
-  //  - ALLOW_TRAILING_JUNK: ignore trailing characters that are not part of
-  //      a double literal.
-  //  - ALLOW_LEADING_SPACES: skip over leading whitespace, including spaces,
-  //                          new-lines, and tabs.
-  //  - ALLOW_TRAILING_SPACES: ignore trailing whitespace.
-  //  - ALLOW_SPACES_AFTER_SIGN: ignore whitespace after the sign.
-  //       Ex: StringToDouble("-   123.2") -> -123.2.
-  //           StringToDouble("+   123.2") -> 123.2
-  //
-  // empty_string_value is returned when an empty string is given as input.
-  // If ALLOW_LEADING_SPACES or ALLOW_TRAILING_SPACES are set, then a string
-  // containing only spaces is converted to the 'empty_string_value', too.
-  //
-  // junk_string_value is returned when
-  //  a) ALLOW_TRAILING_JUNK is not set, and a junk character (a character not
-  //     part of a double-literal) is found.
-  //  b) ALLOW_TRAILING_JUNK is set, but the string does not start with a
-  //     double literal.
-  //
-  // infinity_symbol and nan_symbol are strings that are used to detect
-  // inputs that represent infinity and NaN. They can be null, in which case
-  // they are ignored.
-  // The conversion routine first reads any possible signs. Then it compares the
-  // following character of the input-string with the first character of
-  // the infinity, and nan-symbol. If either matches, the function assumes, that
-  // a match has been found, and expects the following input characters to match
-  // the remaining characters of the special-value symbol.
-  // This means that the following restrictions apply to special-value symbols:
-  //  - they must not start with signs ('+', or '-'),
-  //  - they must not have the same first character.
-  //  - they must not start with digits.
-  //
-  // Examples:
-  //  flags = ALLOW_HEX | ALLOW_TRAILING_JUNK,
-  //  empty_string_value = 0.0,
-  //  junk_string_value = NaN,
-  //  infinity_symbol = "infinity",
-  //  nan_symbol = "nan":
-  //    StringToDouble("0x1234") -> 4660.0.
-  //    StringToDouble("0x1234K") -> 4660.0.
-  //    StringToDouble("") -> 0.0  // empty_string_value.
-  //    StringToDouble(" ") -> NaN  // junk_string_value.
-  //    StringToDouble(" 1") -> NaN  // junk_string_value.
-  //    StringToDouble("0x") -> NaN  // junk_string_value.
-  //    StringToDouble("-123.45") -> -123.45.
-  //    StringToDouble("--123.45") -> NaN  // junk_string_value.
-  //    StringToDouble("123e45") -> 123e45.
-  //    StringToDouble("123E45") -> 123e45.
-  //    StringToDouble("123e+45") -> 123e45.
-  //    StringToDouble("123E-45") -> 123e-45.
-  //    StringToDouble("123e") -> 123.0  // trailing junk ignored.
-  //    StringToDouble("123e-") -> 123.0  // trailing junk ignored.
-  //    StringToDouble("+NaN") -> NaN  // NaN string literal.
-  //    StringToDouble("-infinity") -> -inf.  // infinity literal.
-  //    StringToDouble("Infinity") -> NaN  // junk_string_value.
-  //
-  //  flags = ALLOW_OCTAL | ALLOW_LEADING_SPACES,
-  //  empty_string_value = 0.0,
-  //  junk_string_value = NaN,
-  //  infinity_symbol = NULL,
-  //  nan_symbol = NULL:
-  //    StringToDouble("0x1234") -> NaN  // junk_string_value.
-  //    StringToDouble("01234") -> 668.0.
-  //    StringToDouble("") -> 0.0  // empty_string_value.
-  //    StringToDouble(" ") -> 0.0  // empty_string_value.
-  //    StringToDouble(" 1") -> 1.0
-  //    StringToDouble("0x") -> NaN  // junk_string_value.
-  //    StringToDouble("0123e45") -> NaN  // junk_string_value.
-  //    StringToDouble("01239E45") -> 1239e45.
-  //    StringToDouble("-infinity") -> NaN  // junk_string_value.
-  //    StringToDouble("NaN") -> NaN  // junk_string_value.
-  StringToDoubleConverter(int flags,
-                          double empty_string_value,
-                          double junk_string_value,
-                          const char* infinity_symbol,
-                          const char* nan_symbol)
-      : flags_(flags),
-        empty_string_value_(empty_string_value),
-        junk_string_value_(junk_string_value),
-        infinity_symbol_(infinity_symbol),
-        nan_symbol_(nan_symbol) {
-  }
-
-  // Performs the conversion.
-  // The output parameter 'processed_characters_count' is set to the number
-  // of characters that have been processed to read the number.
-  // Spaces than are processed with ALLOW_{LEADING|TRAILING}_SPACES are included
-  // in the 'processed_characters_count'. Trailing junk is never included.
-  double StringToDouble(const char* buffer,
-                        int length,
-                        int* processed_characters_count) const;
-
-  // Same as StringToDouble above but for 16 bit characters.
-  double StringToDouble(const uc16* buffer,
-                        int length,
-                        int* processed_characters_count) const;
-
-  // Same as StringToDouble but reads a float.
-  // Note that this is not equivalent to static_cast<float>(StringToDouble(...))
-  // due to potential double-rounding.
-  float StringToFloat(const char* buffer,
-                      int length,
-                      int* processed_characters_count) const;
-
-  // Same as StringToFloat above but for 16 bit characters.
-  float StringToFloat(const uc16* buffer,
-                      int length,
-                      int* processed_characters_count) const;
-
- private:
-  const int flags_;
-  const double empty_string_value_;
-  const double junk_string_value_;
-  const char* const infinity_symbol_;
-  const char* const nan_symbol_;
-
-  template <class Iterator>
-  double StringToIeee(Iterator start_pointer,
-                      int length,
-                      bool read_as_double,
-                      int* processed_characters_count) const;
-
-  DISALLOW_IMPLICIT_CONSTRUCTORS(StringToDoubleConverter);
-};
-
-}  // namespace double_conversion
-
-#endif  // DOUBLE_CONVERSION_DOUBLE_CONVERSION_H_
diff --git a/src/3rdparty/double-conversion/double-conversion.pri b/src/3rdparty/double-conversion/double-conversion.pri
deleted file mode 100644
index 1597aca33e..0000000000
--- a/src/3rdparty/double-conversion/double-conversion.pri
+++ /dev/null
@@ -1,24 +0,0 @@
-INCLUDEPATH += $$PWD
-VPATH += $$PWD
-SOURCES += \
-    $$PWD/bignum.cc \
-    $$PWD/bignum-dtoa.cc \
-    $$PWD/cached-powers.cc \
-    $$PWD/diy-fp.cc \
-    $$PWD/double-conversion.cc \
-    $$PWD/fast-dtoa.cc \
-    $$PWD/fixed-dtoa.cc \
-    $$PWD/strtod.cc
-
-HEADERS += \
-    $$PWD/bignum-dtoa.h \
-    $$PWD/bignum.h \
-    $$PWD/cached-powers.h \
-    $$PWD/diy-fp.h \
-    $$PWD/double-conversion.h \
-    $$PWD/fast-dtoa.h \
-    $$PWD/fixed-dtoa.h \
-    $$PWD/ieee.h \
-    $$PWD/strtod.h \
-    $$PWD/utils.h
-
diff --git a/src/3rdparty/double-conversion/fast-dtoa.cc b/src/3rdparty/double-conversion/fast-dtoa.cc
deleted file mode 100644
index 61350383a9..0000000000
--- a/src/3rdparty/double-conversion/fast-dtoa.cc
+++ /dev/null
@@ -1,665 +0,0 @@
-// Copyright 2012 the V8 project authors. All rights reserved.
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-//       notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-//       copyright notice, this list of conditions and the following
-//       disclaimer in the documentation and/or other materials provided
-//       with the distribution.
-//     * Neither the name of Google Inc. nor the names of its
-//       contributors may be used to endorse or promote products derived
-//       from this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-#include "fast-dtoa.h"
-
-#include "cached-powers.h"
-#include "diy-fp.h"
-#include "ieee.h"
-
-namespace double_conversion {
-
-// The minimal and maximal target exponent define the range of w's binary
-// exponent, where 'w' is the result of multiplying the input by a cached power
-// of ten.
-//
-// A different range might be chosen on a different platform, to optimize digit
-// generation, but a smaller range requires more powers of ten to be cached.
-static const int kMinimalTargetExponent = -60;
-static const int kMaximalTargetExponent = -32;
-
-
-// Adjusts the last digit of the generated number, and screens out generated
-// solutions that may be inaccurate. A solution may be inaccurate if it is
-// outside the safe interval, or if we cannot prove that it is closer to the
-// input than a neighboring representation of the same length.
-//
-// Input: * buffer containing the digits of too_high / 10^kappa
-//        * the buffer's length
-//        * distance_too_high_w == (too_high - w).f() * unit
-//        * unsafe_interval == (too_high - too_low).f() * unit
-//        * rest = (too_high - buffer * 10^kappa).f() * unit
-//        * ten_kappa = 10^kappa * unit
-//        * unit = the common multiplier
-// Output: returns true if the buffer is guaranteed to contain the closest
-//    representable number to the input.
-//  Modifies the generated digits in the buffer to approach (round towards) w.
-static bool RoundWeed(Vector<char> buffer,
-                      int length,
-                      uint64_t distance_too_high_w,
-                      uint64_t unsafe_interval,
-                      uint64_t rest,
-                      uint64_t ten_kappa,
-                      uint64_t unit) {
-  uint64_t small_distance = distance_too_high_w - unit;
-  uint64_t big_distance = distance_too_high_w + unit;
-  // Let w_low  = too_high - big_distance, and
-  //     w_high = too_high - small_distance.
-  // Note: w_low < w < w_high
-  //
-  // The real w (* unit) must lie somewhere inside the interval
-  // ]w_low; w_high[ (often written as "(w_low; w_high)")
-
-  // Basically the buffer currently contains a number in the unsafe interval
-  // ]too_low; too_high[ with too_low < w < too_high
-  //
-  //  too_high - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
-  //                     ^v 1 unit            ^      ^                 ^      ^
-  //  boundary_high ---------------------     .      .                 .      .
-  //                     ^v 1 unit            .      .                 .      .
-  //   - - - - - - - - - - - - - - - - - - -  +  - - + - - - - - -     .      .
-  //                                          .      .         ^       .      .
-  //                                          .  big_distance  .       .      .
-  //                                          .      .         .       .    rest
-  //                              small_distance     .         .       .      .
-  //                                          v      .         .       .      .
-  //  w_high - - - - - - - - - - - - - - - - - -     .         .       .      .
-  //                     ^v 1 unit                   .         .       .      .
-  //  w ----------------------------------------     .         .       .      .
-  //                     ^v 1 unit                   v         .       .      .
-  //  w_low  - - - - - - - - - - - - - - - - - - - - -         .       .      .
-  //                                                           .       .      v
-  //  buffer --------------------------------------------------+-------+--------
-  //                                                           .       .
-  //                                                  safe_interval    .
-  //                                                           v       .
-  //   - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -     .
-  //                     ^v 1 unit                                     .
-  //  boundary_low -------------------------                     unsafe_interval
-  //                     ^v 1 unit                                     v
-  //  too_low  - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
-  //
-  //
-  // Note that the value of buffer could lie anywhere inside the range too_low
-  // to too_high.
-  //
-  // boundary_low, boundary_high and w are approximations of the real boundaries
-  // and v (the input number). They are guaranteed to be precise up to one unit.
-  // In fact the error is guaranteed to be strictly less than one unit.
-  //
-  // Anything that lies outside the unsafe interval is guaranteed not to round
-  // to v when read again.
-  // Anything that lies inside the safe interval is guaranteed to round to v
-  // when read again.
-  // If the number inside the buffer lies inside the unsafe interval but not
-  // inside the safe interval then we simply do not know and bail out (returning
-  // false).
-  //
-  // Similarly we have to take into account the imprecision of 'w' when finding
-  // the closest representation of 'w'. If we have two potential
-  // representations, and one is closer to both w_low and w_high, then we know
-  // it is closer to the actual value v.
-  //
-  // By generating the digits of too_high we got the largest (closest to
-  // too_high) buffer that is still in the unsafe interval. In the case where
-  // w_high < buffer < too_high we try to decrement the buffer.
-  // This way the buffer approaches (rounds towards) w.
-  // There are 3 conditions that stop the decrementation process:
-  //   1) the buffer is already below w_high
-  //   2) decrementing the buffer would make it leave the unsafe interval
-  //   3) decrementing the buffer would yield a number below w_high and farther
-  //      away than the current number. In other words:
-  //              (buffer{-1} < w_high) && w_high - buffer{-1} > buffer - w_high
-  // Instead of using the buffer directly we use its distance to too_high.
-  // Conceptually rest ~= too_high - buffer
-  // We need to do the following tests in this order to avoid over- and
-  // underflows.
-  ASSERT(rest <= unsafe_interval);
-  while (rest < small_distance &&  // Negated condition 1
-         unsafe_interval - rest >= ten_kappa &&  // Negated condition 2
-         (rest + ten_kappa < small_distance ||  // buffer{-1} > w_high
-          small_distance - rest >= rest + ten_kappa - small_distance)) {
-    buffer[length - 1]--;
-    rest += ten_kappa;
-  }
-
-  // We have approached w+ as much as possible. We now test if approaching w-
-  // would require changing the buffer. If yes, then we have two possible
-  // representations close to w, but we cannot decide which one is closer.
-  if (rest < big_distance &&
-      unsafe_interval - rest >= ten_kappa &&
-      (rest + ten_kappa < big_distance ||
-       big_distance - rest > rest + ten_kappa - big_distance)) {
-    return false;
-  }
-
-  // Weeding test.
-  //   The safe interval is [too_low + 2 ulp; too_high - 2 ulp]
-  //   Since too_low = too_high - unsafe_interval this is equivalent to
-  //      [too_high - unsafe_interval + 4 ulp; too_high - 2 ulp]
-  //   Conceptually we have: rest ~= too_high - buffer
-  return (2 * unit <= rest) && (rest <= unsafe_interval - 4 * unit);
-}
-
-
-// Rounds the buffer upwards if the result is closer to v by possibly adding
-// 1 to the buffer. If the precision of the calculation is not sufficient to
-// round correctly, return false.
-// The rounding might shift the whole buffer in which case the kappa is
-// adjusted. For example "99", kappa = 3 might become "10", kappa = 4.
-//
-// If 2*rest > ten_kappa then the buffer needs to be round up.
-// rest can have an error of +/- 1 unit. This function accounts for the
-// imprecision and returns false, if the rounding direction cannot be
-// unambiguously determined.
-//
-// Precondition: rest < ten_kappa.
-static bool RoundWeedCounted(Vector<char> buffer,
-                             int length,
-                             uint64_t rest,
-                             uint64_t ten_kappa,
-                             uint64_t unit,
-                             int* kappa) {
-  ASSERT(rest < ten_kappa);
-  // The following tests are done in a specific order to avoid overflows. They
-  // will work correctly with any uint64 values of rest < ten_kappa and unit.
-  //
-  // If the unit is too big, then we don't know which way to round. For example
-  // a unit of 50 means that the real number lies within rest +/- 50. If
-  // 10^kappa == 40 then there is no way to tell which way to round.
-  if (unit >= ten_kappa) return false;
-  // Even if unit is just half the size of 10^kappa we are already completely
-  // lost. (And after the previous test we know that the expression will not
-  // over/underflow.)
-  if (ten_kappa - unit <= unit) return false;
-  // If 2 * (rest + unit) <= 10^kappa we can safely round down.
-  if ((ten_kappa - rest > rest) && (ten_kappa - 2 * rest >= 2 * unit)) {
-    return true;
-  }
-  // If 2 * (rest - unit) >= 10^kappa, then we can safely round up.
-  if ((rest > unit) && (ten_kappa - (rest - unit) <= (rest - unit))) {
-    // Increment the last digit recursively until we find a non '9' digit.
-    buffer[length - 1]++;
-    for (int i = length - 1; i > 0; --i) {
-      if (buffer[i] != '0' + 10) break;
-      buffer[i] = '0';
-      buffer[i - 1]++;
-    }
-    // If the first digit is now '0'+ 10 we had a buffer with all '9's. With the
-    // exception of the first digit all digits are now '0'. Simply switch the
-    // first digit to '1' and adjust the kappa. Example: "99" becomes "10" and
-    // the power (the kappa) is increased.
-    if (buffer[0] == '0' + 10) {
-      buffer[0] = '1';
-      (*kappa) += 1;
-    }
-    return true;
-  }
-  return false;
-}
-
-// Returns the biggest power of ten that is less than or equal to the given
-// number. We furthermore receive the maximum number of bits 'number' has.
-//
-// Returns power == 10^(exponent_plus_one-1) such that
-//    power <= number < power * 10.
-// If number_bits == 0 then 0^(0-1) is returned.
-// The number of bits must be <= 32.
-// Precondition: number < (1 << (number_bits + 1)).
-
-// Inspired by the method for finding an integer log base 10 from here:
-// http://graphics.stanford.edu/~seander/bithacks.html#IntegerLog10
-static unsigned int const kSmallPowersOfTen[] =
-    {0, 1, 10, 100, 1000, 10000, 100000, 1000000, 10000000, 100000000,
-     1000000000};
-
-static void BiggestPowerTen(uint32_t number,
-                            int number_bits,
-                            uint32_t* power,
-                            int* exponent_plus_one) {
-  ASSERT(number < (1u << (number_bits + 1)));
-  // 1233/4096 is approximately 1/lg(10).
-  int exponent_plus_one_guess = ((number_bits + 1) * 1233 >> 12);
-  // We increment to skip over the first entry in the kPowersOf10 table.
-  // Note: kPowersOf10[i] == 10^(i-1).
-  exponent_plus_one_guess++;
-  // We don't have any guarantees that 2^number_bits <= number.
-  if (number < kSmallPowersOfTen[exponent_plus_one_guess]) {
-    exponent_plus_one_guess--;
-  }
-  *power = kSmallPowersOfTen[exponent_plus_one_guess];
-  *exponent_plus_one = exponent_plus_one_guess;
-}
-
-// Generates the digits of input number w.
-// w is a floating-point number (DiyFp), consisting of a significand and an
-// exponent. Its exponent is bounded by kMinimalTargetExponent and
-// kMaximalTargetExponent.
-//       Hence -60 <= w.e() <= -32.
-//
-// Returns false if it fails, in which case the generated digits in the buffer
-// should not be used.
-// Preconditions:
-//  * low, w and high are correct up to 1 ulp (unit in the last place). That
-//    is, their error must be less than a unit of their last digits.
-//  * low.e() == w.e() == high.e()
-//  * low < w < high, and taking into account their error: low~ <= high~
-//  * kMinimalTargetExponent <= w.e() <= kMaximalTargetExponent
-// Postconditions: returns false if procedure fails.
-//   otherwise:
-//     * buffer is not null-terminated, but len contains the number of digits.
-//     * buffer contains the shortest possible decimal digit-sequence
-//       such that LOW < buffer * 10^kappa < HIGH, where LOW and HIGH are the
-//       correct values of low and high (without their error).
-//     * if more than one decimal representation gives the minimal number of
-//       decimal digits then the one closest to W (where W is the correct value
-//       of w) is chosen.
-// Remark: this procedure takes into account the imprecision of its input
-//   numbers. If the precision is not enough to guarantee all the postconditions
-//   then false is returned. This usually happens rarely (~0.5%).
-//
-// Say, for the sake of example, that
-//   w.e() == -48, and w.f() == 0x1234567890abcdef
-// w's value can be computed by w.f() * 2^w.e()
-// We can obtain w's integral digits by simply shifting w.f() by -w.e().
-//  -> w's integral part is 0x1234
-//  w's fractional part is therefore 0x567890abcdef.
-// Printing w's integral part is easy (simply print 0x1234 in decimal).
-// In order to print its fraction we repeatedly multiply the fraction by 10 and
-// get each digit. Example the first digit after the point would be computed by
-//   (0x567890abcdef * 10) >> 48. -> 3
-// The whole thing becomes slightly more complicated because we want to stop
-// once we have enough digits. That is, once the digits inside the buffer
-// represent 'w' we can stop. Everything inside the interval low - high
-// represents w. However we have to pay attention to low, high and w's
-// imprecision.
-static bool DigitGen(DiyFp low,
-                     DiyFp w,
-                     DiyFp high,
-                     Vector<char> buffer,
-                     int* length,
-                     int* kappa) {
-  ASSERT(low.e() == w.e() && w.e() == high.e());
-  ASSERT(low.f() + 1 <= high.f() - 1);
-  ASSERT(kMinimalTargetExponent <= w.e() && w.e() <= kMaximalTargetExponent);
-  // low, w and high are imprecise, but by less than one ulp (unit in the last
-  // place).
-  // If we remove (resp. add) 1 ulp from low (resp. high) we are certain that
-  // the new numbers are outside of the interval we want the final
-  // representation to lie in.
-  // Inversely adding (resp. removing) 1 ulp from low (resp. high) would yield
-  // numbers that are certain to lie in the interval. We will use this fact
-  // later on.
-  // We will now start by generating the digits within the uncertain
-  // interval. Later we will weed out representations that lie outside the safe
-  // interval and thus _might_ lie outside the correct interval.
-  uint64_t unit = 1;
-  DiyFp too_low = DiyFp(low.f() - unit, low.e());
-  DiyFp too_high = DiyFp(high.f() + unit, high.e());
-  // too_low and too_high are guaranteed to lie outside the interval we want the
-  // generated number in.
-  DiyFp unsafe_interval = DiyFp::Minus(too_high, too_low);
-  // We now cut the input number into two parts: the integral digits and the
-  // fractionals. We will not write any decimal separator though, but adapt
-  // kappa instead.
-  // Reminder: we are currently computing the digits (stored inside the buffer)
-  // such that:   too_low < buffer * 10^kappa < too_high
-  // We use too_high for the digit_generation and stop as soon as possible.
-  // If we stop early we effectively round down.
-  DiyFp one = DiyFp(static_cast<uint64_t>(1) << -w.e(), w.e());
-  // Division by one is a shift.
-  uint32_t integrals = static_cast<uint32_t>(too_high.f() >> -one.e());
-  // Modulo by one is an and.
-  uint64_t fractionals = too_high.f() & (one.f() - 1);
-  uint32_t divisor;
-  int divisor_exponent_plus_one;
-  BiggestPowerTen(integrals, DiyFp::kSignificandSize - (-one.e()),
-                  &divisor, &divisor_exponent_plus_one);
-  *kappa = divisor_exponent_plus_one;
-  *length = 0;
-  // Loop invariant: buffer = too_high / 10^kappa  (integer division)
-  // The invariant holds for the first iteration: kappa has been initialized
-  // with the divisor exponent + 1. And the divisor is the biggest power of ten
-  // that is smaller than integrals.
-  while (*kappa > 0) {
-    int digit = integrals / divisor;
-    ASSERT(digit <= 9);
-    buffer[*length] = static_cast<char>('0' + digit);
-    (*length)++;
-    integrals %= divisor;
-    (*kappa)--;
-    // Note that kappa now equals the exponent of the divisor and that the
-    // invariant thus holds again.
-    uint64_t rest =
-        (static_cast<uint64_t>(integrals) << -one.e()) + fractionals;
-    // Invariant: too_high = buffer * 10^kappa + DiyFp(rest, one.e())
-    // Reminder: unsafe_interval.e() == one.e()
-    if (rest < unsafe_interval.f()) {
-      // Rounding down (by not emitting the remaining digits) yields a number
-      // that lies within the unsafe interval.
-      return RoundWeed(buffer, *length, DiyFp::Minus(too_high, w).f(),
-                       unsafe_interval.f(), rest,
-                       static_cast<uint64_t>(divisor) << -one.e(), unit);
-    }
-    divisor /= 10;
-  }
-
-  // The integrals have been generated. We are at the point of the decimal
-  // separator. In the following loop we simply multiply the remaining digits by
-  // 10 and divide by one. We just need to pay attention to multiply associated
-  // data (like the interval or 'unit'), too.
-  // Note that the multiplication by 10 does not overflow, because w.e >= -60
-  // and thus one.e >= -60.
-  ASSERT(one.e() >= -60);
-  ASSERT(fractionals < one.f());
-  ASSERT(UINT64_2PART_C(0xFFFFFFFF, FFFFFFFF) / 10 >= one.f());
-  for (;;) {
-    fractionals *= 10;
-    unit *= 10;
-    unsafe_interval.set_f(unsafe_interval.f() * 10);
-    // Integer division by one.
-    int digit = static_cast<int>(fractionals >> -one.e());
-    ASSERT(digit <= 9);
-    buffer[*length] = static_cast<char>('0' + digit);
-    (*length)++;
-    fractionals &= one.f() - 1;  // Modulo by one.
-    (*kappa)--;
-    if (fractionals < unsafe_interval.f()) {
-      return RoundWeed(buffer, *length, DiyFp::Minus(too_high, w).f() * unit,
-                       unsafe_interval.f(), fractionals, one.f(), unit);
-    }
-  }
-}
-
-
-
-// Generates (at most) requested_digits digits of input number w.
-// w is a floating-point number (DiyFp), consisting of a significand and an
-// exponent. Its exponent is bounded by kMinimalTargetExponent and
-// kMaximalTargetExponent.
-//       Hence -60 <= w.e() <= -32.
-//
-// Returns false if it fails, in which case the generated digits in the buffer
-// should not be used.
-// Preconditions:
-//  * w is correct up to 1 ulp (unit in the last place). That
-//    is, its error must be strictly less than a unit of its last digit.
-//  * kMinimalTargetExponent <= w.e() <= kMaximalTargetExponent
-//
-// Postconditions: returns false if procedure fails.
-//   otherwise:
-//     * buffer is not null-terminated, but length contains the number of
-//       digits.
-//     * the representation in buffer is the most precise representation of
-//       requested_digits digits.
-//     * buffer contains at most requested_digits digits of w. If there are less
-//       than requested_digits digits then some trailing '0's have been removed.
-//     * kappa is such that
-//            w = buffer * 10^kappa + eps with |eps| < 10^kappa / 2.
-//
-// Remark: This procedure takes into account the imprecision of its input
-//   numbers. If the precision is not enough to guarantee all the postconditions
-//   then false is returned. This usually happens rarely, but the failure-rate
-//   increases with higher requested_digits.
-static bool DigitGenCounted(DiyFp w,
-                            int requested_digits,
-                            Vector<char> buffer,
-                            int* length,
-                            int* kappa) {
-  ASSERT(kMinimalTargetExponent <= w.e() && w.e() <= kMaximalTargetExponent);
-  ASSERT(kMinimalTargetExponent >= -60);
-  ASSERT(kMaximalTargetExponent <= -32);
-  // w is assumed to have an error less than 1 unit. Whenever w is scaled we
-  // also scale its error.
-  uint64_t w_error = 1;
-  // We cut the input number into two parts: the integral digits and the
-  // fractional digits. We don't emit any decimal separator, but adapt kappa
-  // instead. Example: instead of writing "1.2" we put "12" into the buffer and
-  // increase kappa by 1.
-  DiyFp one = DiyFp(static_cast<uint64_t>(1) << -w.e(), w.e());
-  // Division by one is a shift.
-  uint32_t integrals = static_cast<uint32_t>(w.f() >> -one.e());
-  // Modulo by one is an and.
-  uint64_t fractionals = w.f() & (one.f() - 1);
-  uint32_t divisor;
-  int divisor_exponent_plus_one;
-  BiggestPowerTen(integrals, DiyFp::kSignificandSize - (-one.e()),
-                  &divisor, &divisor_exponent_plus_one);
-  *kappa = divisor_exponent_plus_one;
-  *length = 0;
-
-  // Loop invariant: buffer = w / 10^kappa  (integer division)
-  // The invariant holds for the first iteration: kappa has been initialized
-  // with the divisor exponent + 1. And the divisor is the biggest power of ten
-  // that is smaller than 'integrals'.
-  while (*kappa > 0) {
-    int digit = integrals / divisor;
-    ASSERT(digit <= 9);
-    buffer[*length] = static_cast<char>('0' + digit);
-    (*length)++;
-    requested_digits--;
-    integrals %= divisor;
-    (*kappa)--;
-    // Note that kappa now equals the exponent of the divisor and that the
-    // invariant thus holds again.
-    if (requested_digits == 0) break;
-    divisor /= 10;
-  }
-
-  if (requested_digits == 0) {
-    uint64_t rest =
-        (static_cast<uint64_t>(integrals) << -one.e()) + fractionals;
-    return RoundWeedCounted(buffer, *length, rest,
-                            static_cast<uint64_t>(divisor) << -one.e(), w_error,
-                            kappa);
-  }
-
-  // The integrals have been generated. We are at the point of the decimal
-  // separator. In the following loop we simply multiply the remaining digits by
-  // 10 and divide by one. We just need to pay attention to multiply associated
-  // data (the 'unit'), too.
-  // Note that the multiplication by 10 does not overflow, because w.e >= -60
-  // and thus one.e >= -60.
-  ASSERT(one.e() >= -60);
-  ASSERT(fractionals < one.f());
-  ASSERT(UINT64_2PART_C(0xFFFFFFFF, FFFFFFFF) / 10 >= one.f());
-  while (requested_digits > 0 && fractionals > w_error) {
-    fractionals *= 10;
-    w_error *= 10;
-    // Integer division by one.
-    int digit = static_cast<int>(fractionals >> -one.e());
-    ASSERT(digit <= 9);
-    buffer[*length] = static_cast<char>('0' + digit);
-    (*length)++;
-    requested_digits--;
-    fractionals &= one.f() - 1;  // Modulo by one.
-    (*kappa)--;
-  }
-  if (requested_digits != 0) return false;
-  return RoundWeedCounted(buffer, *length, fractionals, one.f(), w_error,
-                          kappa);
-}
-
-
-// Provides a decimal representation of v.
-// Returns true if it succeeds, otherwise the result cannot be trusted.
-// There will be *length digits inside the buffer (not null-terminated).
-// If the function returns true then
-//        v == (double) (buffer * 10^decimal_exponent).
-// The digits in the buffer are the shortest representation possible: no
-// 0.09999999999999999 instead of 0.1. The shorter representation will even be
-// chosen even if the longer one would be closer to v.
-// The last digit will be closest to the actual v. That is, even if several
-// digits might correctly yield 'v' when read again, the closest will be
-// computed.
-static bool Grisu3(double v,
-                   FastDtoaMode mode,
-                   Vector<char> buffer,
-                   int* length,
-                   int* decimal_exponent) {
-  DiyFp w = Double(v).AsNormalizedDiyFp();
-  // boundary_minus and boundary_plus are the boundaries between v and its
-  // closest floating-point neighbors. Any number strictly between
-  // boundary_minus and boundary_plus will round to v when convert to a double.
-  // Grisu3 will never output representations that lie exactly on a boundary.
-  DiyFp boundary_minus, boundary_plus;
-  if (mode == FAST_DTOA_SHORTEST) {
-    Double(v).NormalizedBoundaries(&boundary_minus, &boundary_plus);
-  } else {
-    ASSERT(mode == FAST_DTOA_SHORTEST_SINGLE);
-    float single_v = static_cast<float>(v);
-    Single(single_v).NormalizedBoundaries(&boundary_minus, &boundary_plus);
-  }
-  ASSERT(boundary_plus.e() == w.e());
-  DiyFp ten_mk;  // Cached power of ten: 10^-k
-  int mk;        // -k
-  int ten_mk_minimal_binary_exponent =
-     kMinimalTargetExponent - (w.e() + DiyFp::kSignificandSize);
-  int ten_mk_maximal_binary_exponent =
-     kMaximalTargetExponent - (w.e() + DiyFp::kSignificandSize);
-  PowersOfTenCache::GetCachedPowerForBinaryExponentRange(
-      ten_mk_minimal_binary_exponent,
-      ten_mk_maximal_binary_exponent,
-      &ten_mk, &mk);
-  ASSERT((kMinimalTargetExponent <= w.e() + ten_mk.e() +
-          DiyFp::kSignificandSize) &&
-         (kMaximalTargetExponent >= w.e() + ten_mk.e() +
-          DiyFp::kSignificandSize));
-  // Note that ten_mk is only an approximation of 10^-k. A DiyFp only contains a
-  // 64 bit significand and ten_mk is thus only precise up to 64 bits.
-
-  // The DiyFp::Times procedure rounds its result, and ten_mk is approximated
-  // too. The variable scaled_w (as well as scaled_boundary_minus/plus) are now
-  // off by a small amount.
-  // In fact: scaled_w - w*10^k < 1ulp (unit in the last place) of scaled_w.
-  // In other words: let f = scaled_w.f() and e = scaled_w.e(), then
-  //           (f-1) * 2^e < w*10^k < (f+1) * 2^e
-  DiyFp scaled_w = DiyFp::Times(w, ten_mk);
-  ASSERT(scaled_w.e() ==
-         boundary_plus.e() + ten_mk.e() + DiyFp::kSignificandSize);
-  // In theory it would be possible to avoid some recomputations by computing
-  // the difference between w and boundary_minus/plus (a power of 2) and to
-  // compute scaled_boundary_minus/plus by subtracting/adding from
-  // scaled_w. However the code becomes much less readable and the speed
-  // enhancements are not terriffic.
-  DiyFp scaled_boundary_minus = DiyFp::Times(boundary_minus, ten_mk);
-  DiyFp scaled_boundary_plus  = DiyFp::Times(boundary_plus,  ten_mk);
-
-  // DigitGen will generate the digits of scaled_w. Therefore we have
-  // v == (double) (scaled_w * 10^-mk).
-  // Set decimal_exponent == -mk and pass it to DigitGen. If scaled_w is not an
-  // integer than it will be updated. For instance if scaled_w == 1.23 then
-  // the buffer will be filled with "123" und the decimal_exponent will be
-  // decreased by 2.
-  int kappa;
-  bool result = DigitGen(scaled_boundary_minus, scaled_w, scaled_boundary_plus,
-                         buffer, length, &kappa);
-  *decimal_exponent = -mk + kappa;
-  return result;
-}
-
-
-// The "counted" version of grisu3 (see above) only generates requested_digits
-// number of digits. This version does not generate the shortest representation,
-// and with enough requested digits 0.1 will at some point print as 0.9999999...
-// Grisu3 is too imprecise for real halfway cases (1.5 will not work) and
-// therefore the rounding strategy for halfway cases is irrelevant.
-static bool Grisu3Counted(double v,
-                          int requested_digits,
-                          Vector<char> buffer,
-                          int* length,
-                          int* decimal_exponent) {
-  DiyFp w = Double(v).AsNormalizedDiyFp();
-  DiyFp ten_mk;  // Cached power of ten: 10^-k
-  int mk;        // -k
-  int ten_mk_minimal_binary_exponent =
-     kMinimalTargetExponent - (w.e() + DiyFp::kSignificandSize);
-  int ten_mk_maximal_binary_exponent =
-     kMaximalTargetExponent - (w.e() + DiyFp::kSignificandSize);
-  PowersOfTenCache::GetCachedPowerForBinaryExponentRange(
-      ten_mk_minimal_binary_exponent,
-      ten_mk_maximal_binary_exponent,
-      &ten_mk, &mk);
-  ASSERT((kMinimalTargetExponent <= w.e() + ten_mk.e() +
-          DiyFp::kSignificandSize) &&
-         (kMaximalTargetExponent >= w.e() + ten_mk.e() +
-          DiyFp::kSignificandSize));
-  // Note that ten_mk is only an approximation of 10^-k. A DiyFp only contains a
-  // 64 bit significand and ten_mk is thus only precise up to 64 bits.
-
-  // The DiyFp::Times procedure rounds its result, and ten_mk is approximated
-  // too. The variable scaled_w (as well as scaled_boundary_minus/plus) are now
-  // off by a small amount.
-  // In fact: scaled_w - w*10^k < 1ulp (unit in the last place) of scaled_w.
-  // In other words: let f = scaled_w.f() and e = scaled_w.e(), then
-  //           (f-1) * 2^e < w*10^k < (f+1) * 2^e
-  DiyFp scaled_w = DiyFp::Times(w, ten_mk);
-
-  // We now have (double) (scaled_w * 10^-mk).
-  // DigitGen will generate the first requested_digits digits of scaled_w and
-  // return together with a kappa such that scaled_w ~= buffer * 10^kappa. (It
-  // will not always be exactly the same since DigitGenCounted only produces a
-  // limited number of digits.)
-  int kappa;
-  bool result = DigitGenCounted(scaled_w, requested_digits,
-                                buffer, length, &kappa);
-  *decimal_exponent = -mk + kappa;
-  return result;
-}
-
-
-bool FastDtoa(double v,
-              FastDtoaMode mode,
-              int requested_digits,
-              Vector<char> buffer,
-              int* length,
-              int* decimal_point) {
-  ASSERT(v > 0);
-  ASSERT(!Double(v).IsSpecial());
-
-  bool result = false;
-  int decimal_exponent = 0;
-  switch (mode) {
-    case FAST_DTOA_SHORTEST:
-    case FAST_DTOA_SHORTEST_SINGLE:
-      result = Grisu3(v, mode, buffer, length, &decimal_exponent);
-      break;
-    case FAST_DTOA_PRECISION:
-      result = Grisu3Counted(v, requested_digits,
-                             buffer, length, &decimal_exponent);
-      break;
-    default:
-      UNREACHABLE();
-  }
-  if (result) {
-    *decimal_point = *length + decimal_exponent;
-    buffer[*length] = '\0';
-  }
-  return result;
-}
-
-}  // namespace double_conversion
diff --git a/src/3rdparty/double-conversion/fast-dtoa.h b/src/3rdparty/double-conversion/fast-dtoa.h
deleted file mode 100644
index 5f1e8eee5e..0000000000
--- a/src/3rdparty/double-conversion/fast-dtoa.h
+++ /dev/null
@@ -1,88 +0,0 @@
-// Copyright 2010 the V8 project authors. All rights reserved.
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-//       notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-//       copyright notice, this list of conditions and the following
-//       disclaimer in the documentation and/or other materials provided
-//       with the distribution.
-//     * Neither the name of Google Inc. nor the names of its
-//       contributors may be used to endorse or promote products derived
-//       from this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-#ifndef DOUBLE_CONVERSION_FAST_DTOA_H_
-#define DOUBLE_CONVERSION_FAST_DTOA_H_
-
-#include "utils.h"
-
-namespace double_conversion {
-
-enum FastDtoaMode {
-  // Computes the shortest representation of the given input. The returned
-  // result will be the most accurate number of this length. Longer
-  // representations might be more accurate.
-  FAST_DTOA_SHORTEST,
-  // Same as FAST_DTOA_SHORTEST but for single-precision floats.
-  FAST_DTOA_SHORTEST_SINGLE,
-  // Computes a representation where the precision (number of digits) is
-  // given as input. The precision is independent of the decimal point.
-  FAST_DTOA_PRECISION
-};
-
-// FastDtoa will produce at most kFastDtoaMaximalLength digits. This does not
-// include the terminating '\0' character.
-static const int kFastDtoaMaximalLength = 17;
-// Same for single-precision numbers.
-static const int kFastDtoaMaximalSingleLength = 9;
-
-// Provides a decimal representation of v.
-// The result should be interpreted as buffer * 10^(point - length).
-//
-// Precondition:
-//   * v must be a strictly positive finite double.
-//
-// Returns true if it succeeds, otherwise the result can not be trusted.
-// There will be *length digits inside the buffer followed by a null terminator.
-// If the function returns true and mode equals
-//   - FAST_DTOA_SHORTEST, then
-//     the parameter requested_digits is ignored.
-//     The result satisfies
-//         v == (double) (buffer * 10^(point - length)).
-//     The digits in the buffer are the shortest representation possible. E.g.
-//     if 0.099999999999 and 0.1 represent the same double then "1" is returned
-//     with point = 0.
-//     The last digit will be closest to the actual v. That is, even if several
-//     digits might correctly yield 'v' when read again, the buffer will contain
-//     the one closest to v.
-//   - FAST_DTOA_PRECISION, then
-//     the buffer contains requested_digits digits.
-//     the difference v - (buffer * 10^(point-length)) is closest to zero for
-//     all possible representations of requested_digits digits.
-//     If there are two values that are equally close, then FastDtoa returns
-//     false.
-// For both modes the buffer must be large enough to hold the result.
-bool FastDtoa(double d,
-              FastDtoaMode mode,
-              int requested_digits,
-              Vector<char> buffer,
-              int* length,
-              int* decimal_point);
-
-}  // namespace double_conversion
-
-#endif  // DOUBLE_CONVERSION_FAST_DTOA_H_
diff --git a/src/3rdparty/double-conversion/fixed-dtoa.cc b/src/3rdparty/double-conversion/fixed-dtoa.cc
deleted file mode 100644
index aef65fdc21..0000000000
--- a/src/3rdparty/double-conversion/fixed-dtoa.cc
+++ /dev/null
@@ -1,404 +0,0 @@
-// Copyright 2010 the V8 project authors. All rights reserved.
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-//       notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-//       copyright notice, this list of conditions and the following
-//       disclaimer in the documentation and/or other materials provided
-//       with the distribution.
-//     * Neither the name of Google Inc. nor the names of its
-//       contributors may be used to endorse or promote products derived
-//       from this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-#include <math.h>
-
-#include "fixed-dtoa.h"
-#include "ieee.h"
-
-namespace double_conversion {
-
-// Represents a 128bit type. This class should be replaced by a native type on
-// platforms that support 128bit integers.
-class UInt128 {
- public:
-  UInt128() : high_bits_(0), low_bits_(0) { }
-  UInt128(uint64_t high, uint64_t low) : high_bits_(high), low_bits_(low) { }
-
-  void Multiply(uint32_t multiplicand) {
-    uint64_t accumulator;
-
-    accumulator = (low_bits_ & kMask32) * multiplicand;
-    uint32_t part = static_cast<uint32_t>(accumulator & kMask32);
-    accumulator >>= 32;
-    accumulator = accumulator + (low_bits_ >> 32) * multiplicand;
-    low_bits_ = (accumulator << 32) + part;
-    accumulator >>= 32;
-    accumulator = accumulator + (high_bits_ & kMask32) * multiplicand;
-    part = static_cast<uint32_t>(accumulator & kMask32);
-    accumulator >>= 32;
-    accumulator = accumulator + (high_bits_ >> 32) * multiplicand;
-    high_bits_ = (accumulator << 32) + part;
-    ASSERT((accumulator >> 32) == 0);
-  }
-
-  void Shift(int shift_amount) {
-    ASSERT(-64 <= shift_amount && shift_amount <= 64);
-    if (shift_amount == 0) {
-      return;
-    } else if (shift_amount == -64) {
-      high_bits_ = low_bits_;
-      low_bits_ = 0;
-    } else if (shift_amount == 64) {
-      low_bits_ = high_bits_;
-      high_bits_ = 0;
-    } else if (shift_amount <= 0) {
-      high_bits_ <<= -shift_amount;
-      high_bits_ += low_bits_ >> (64 + shift_amount);
-      low_bits_ <<= -shift_amount;
-    } else {
-      low_bits_ >>= shift_amount;
-      low_bits_ += high_bits_ << (64 - shift_amount);
-      high_bits_ >>= shift_amount;
-    }
-  }
-
-  // Modifies *this to *this MOD (2^power).
-  // Returns *this DIV (2^power).
-  int DivModPowerOf2(int power) {
-    if (power >= 64) {
-      int result = static_cast<int>(high_bits_ >> (power - 64));
-      high_bits_ -= static_cast<uint64_t>(result) << (power - 64);
-      return result;
-    } else {
-      uint64_t part_low = low_bits_ >> power;
-      uint64_t part_high = high_bits_ << (64 - power);
-      int result = static_cast<int>(part_low + part_high);
-      high_bits_ = 0;
-      low_bits_ -= part_low << power;
-      return result;
-    }
-  }
-
-  bool IsZero() const {
-    return high_bits_ == 0 && low_bits_ == 0;
-  }
-
-  int BitAt(int position) {
-    if (position >= 64) {
-      return static_cast<int>(high_bits_ >> (position - 64)) & 1;
-    } else {
-      return static_cast<int>(low_bits_ >> position) & 1;
-    }
-  }
-
- private:
-  static const uint64_t kMask32 = 0xFFFFFFFF;
-  // Value == (high_bits_ << 64) + low_bits_
-  uint64_t high_bits_;
-  uint64_t low_bits_;
-};
-
-
-static const int kDoubleSignificandSize = 53;  // Includes the hidden bit.
-
-
-static void FillDigits32FixedLength(uint32_t number, int requested_length,
-                                    Vector<char> buffer, int* length) {
-  for (int i = requested_length - 1; i >= 0; --i) {
-    buffer[(*length) + i] = '0' + number % 10;
-    number /= 10;
-  }
-  *length += requested_length;
-}
-
-
-static void FillDigits32(uint32_t number, Vector<char> buffer, int* length) {
-  int number_length = 0;
-  // We fill the digits in reverse order and exchange them afterwards.
-  while (number != 0) {
-    int digit = number % 10;
-    number /= 10;
-    buffer[(*length) + number_length] = static_cast<char>('0' + digit);
-    number_length++;
-  }
-  // Exchange the digits.
-  int i = *length;
-  int j = *length + number_length - 1;
-  while (i < j) {
-    char tmp = buffer[i];
-    buffer[i] = buffer[j];
-    buffer[j] = tmp;
-    i++;
-    j--;
-  }
-  *length += number_length;
-}
-
-
-static void FillDigits64FixedLength(uint64_t number,
-                                    Vector<char> buffer, int* length) {
-  const uint32_t kTen7 = 10000000;
-  // For efficiency cut the number into 3 uint32_t parts, and print those.
-  uint32_t part2 = static_cast<uint32_t>(number % kTen7);
-  number /= kTen7;
-  uint32_t part1 = static_cast<uint32_t>(number % kTen7);
-  uint32_t part0 = static_cast<uint32_t>(number / kTen7);
-
-  FillDigits32FixedLength(part0, 3, buffer, length);
-  FillDigits32FixedLength(part1, 7, buffer, length);
-  FillDigits32FixedLength(part2, 7, buffer, length);
-}
-
-
-static void FillDigits64(uint64_t number, Vector<char> buffer, int* length) {
-  const uint32_t kTen7 = 10000000;
-  // For efficiency cut the number into 3 uint32_t parts, and print those.
-  uint32_t part2 = static_cast<uint32_t>(number % kTen7);
-  number /= kTen7;
-  uint32_t part1 = static_cast<uint32_t>(number % kTen7);
-  uint32_t part0 = static_cast<uint32_t>(number / kTen7);
-
-  if (part0 != 0) {
-    FillDigits32(part0, buffer, length);
-    FillDigits32FixedLength(part1, 7, buffer, length);
-    FillDigits32FixedLength(part2, 7, buffer, length);
-  } else if (part1 != 0) {
-    FillDigits32(part1, buffer, length);
-    FillDigits32FixedLength(part2, 7, buffer, length);
-  } else {
-    FillDigits32(part2, buffer, length);
-  }
-}
-
-
-static void RoundUp(Vector<char> buffer, int* length, int* decimal_point) {
-  // An empty buffer represents 0.
-  if (*length == 0) {
-    buffer[0] = '1';
-    *decimal_point = 1;
-    *length = 1;
-    return;
-  }
-  // Round the last digit until we either have a digit that was not '9' or until
-  // we reached the first digit.
-  buffer[(*length) - 1]++;
-  for (int i = (*length) - 1; i > 0; --i) {
-    if (buffer[i] != '0' + 10) {
-      return;
-    }
-    buffer[i] = '0';
-    buffer[i - 1]++;
-  }
-  // If the first digit is now '0' + 10, we would need to set it to '0' and add
-  // a '1' in front. However we reach the first digit only if all following
-  // digits had been '9' before rounding up. Now all trailing digits are '0' and
-  // we simply switch the first digit to '1' and update the decimal-point
-  // (indicating that the point is now one digit to the right).
-  if (buffer[0] == '0' + 10) {
-    buffer[0] = '1';
-    (*decimal_point)++;
-  }
-}
-
-
-// The given fractionals number represents a fixed-point number with binary
-// point at bit (-exponent).
-// Preconditions:
-//   -128 <= exponent <= 0.
-//   0 <= fractionals * 2^exponent < 1
-//   The buffer holds the result.
-// The function will round its result. During the rounding-process digits not
-// generated by this function might be updated, and the decimal-point variable
-// might be updated. If this function generates the digits 99 and the buffer
-// already contained "199" (thus yielding a buffer of "19999") then a
-// rounding-up will change the contents of the buffer to "20000".
-static void FillFractionals(uint64_t fractionals, int exponent,
-                            int fractional_count, Vector<char> buffer,
-                            int* length, int* decimal_point) {
-  ASSERT(-128 <= exponent && exponent <= 0);
-  // 'fractionals' is a fixed-point number, with binary point at bit
-  // (-exponent). Inside the function the non-converted remainder of fractionals
-  // is a fixed-point number, with binary point at bit 'point'.
-  if (-exponent <= 64) {
-    // One 64 bit number is sufficient.
-    ASSERT(fractionals >> 56 == 0);
-    int point = -exponent;
-    for (int i = 0; i < fractional_count; ++i) {
-      if (fractionals == 0) break;
-      // Instead of multiplying by 10 we multiply by 5 and adjust the point
-      // location. This way the fractionals variable will not overflow.
-      // Invariant at the beginning of the loop: fractionals < 2^point.
-      // Initially we have: point <= 64 and fractionals < 2^56
-      // After each iteration the point is decremented by one.
-      // Note that 5^3 = 125 < 128 = 2^7.
-      // Therefore three iterations of this loop will not overflow fractionals
-      // (even without the subtraction at the end of the loop body). At this
-      // time point will satisfy point <= 61 and therefore fractionals < 2^point
-      // and any further multiplication of fractionals by 5 will not overflow.
-      fractionals *= 5;
-      point--;
-      int digit = static_cast<int>(fractionals >> point);
-      ASSERT(digit <= 9);
-      buffer[*length] = static_cast<char>('0' + digit);
-      (*length)++;
-      fractionals -= static_cast<uint64_t>(digit) << point;
-    }
-    // If the first bit after the point is set we have to round up.
-    if (((fractionals >> (point - 1)) & 1) == 1) {
-      RoundUp(buffer, length, decimal_point);
-    }
-  } else {  // We need 128 bits.
-    ASSERT(64 < -exponent && -exponent <= 128);
-    UInt128 fractionals128 = UInt128(fractionals, 0);
-    fractionals128.Shift(-exponent - 64);
-    int point = 128;
-    for (int i = 0; i < fractional_count; ++i) {
-      if (fractionals128.IsZero()) break;
-      // As before: instead of multiplying by 10 we multiply by 5 and adjust the
-      // point location.
-      // This multiplication will not overflow for the same reasons as before.
-      fractionals128.Multiply(5);
-      point--;
-      int digit = fractionals128.DivModPowerOf2(point);
-      ASSERT(digit <= 9);
-      buffer[*length] = static_cast<char>('0' + digit);
-      (*length)++;
-    }
-    if (fractionals128.BitAt(point - 1) == 1) {
-      RoundUp(buffer, length, decimal_point);
-    }
-  }
-}
-
-
-// Removes leading and trailing zeros.
-// If leading zeros are removed then the decimal point position is adjusted.
-static void TrimZeros(Vector<char> buffer, int* length, int* decimal_point) {
-  while (*length > 0 && buffer[(*length) - 1] == '0') {
-    (*length)--;
-  }
-  int first_non_zero = 0;
-  while (first_non_zero < *length && buffer[first_non_zero] == '0') {
-    first_non_zero++;
-  }
-  if (first_non_zero != 0) {
-    for (int i = first_non_zero; i < *length; ++i) {
-      buffer[i - first_non_zero] = buffer[i];
-    }
-    *length -= first_non_zero;
-    *decimal_point -= first_non_zero;
-  }
-}
-
-
-bool FastFixedDtoa(double v,
-                   int fractional_count,
-                   Vector<char> buffer,
-                   int* length,
-                   int* decimal_point) {
-  const uint32_t kMaxUInt32 = 0xFFFFFFFF;
-  uint64_t significand = Double(v).Significand();
-  int exponent = Double(v).Exponent();
-  // v = significand * 2^exponent (with significand a 53bit integer).
-  // If the exponent is larger than 20 (i.e. we may have a 73bit number) then we
-  // don't know how to compute the representation. 2^73 ~= 9.5*10^21.
-  // If necessary this limit could probably be increased, but we don't need
-  // more.
-  if (exponent > 20) return false;
-  if (fractional_count > 20) return false;
-  *length = 0;
-  // At most kDoubleSignificandSize bits of the significand are non-zero.
-  // Given a 64 bit integer we have 11 0s followed by 53 potentially non-zero
-  // bits:  0..11*..0xxx..53*..xx
-  if (exponent + kDoubleSignificandSize > 64) {
-    // The exponent must be > 11.
-    //
-    // We know that v = significand * 2^exponent.
-    // And the exponent > 11.
-    // We simplify the task by dividing v by 10^17.
-    // The quotient delivers the first digits, and the remainder fits into a 64
-    // bit number.
-    // Dividing by 10^17 is equivalent to dividing by 5^17*2^17.
-    const uint64_t kFive17 = UINT64_2PART_C(0xB1, A2BC2EC5);  // 5^17
-    uint64_t divisor = kFive17;
-    int divisor_power = 17;
-    uint64_t dividend = significand;
-    uint32_t quotient;
-    uint64_t remainder;
-    // Let v = f * 2^e with f == significand and e == exponent.
-    // Then need q (quotient) and r (remainder) as follows:
-    //   v            = q * 10^17       + r
-    //   f * 2^e      = q * 10^17       + r
-    //   f * 2^e      = q * 5^17 * 2^17 + r
-    // If e > 17 then
-    //   f * 2^(e-17) = q * 5^17        + r/2^17
-    // else
-    //   f  = q * 5^17 * 2^(17-e) + r/2^e
-    if (exponent > divisor_power) {
-      // We only allow exponents of up to 20 and therefore (17 - e) <= 3
-      dividend <<= exponent - divisor_power;
-      quotient = static_cast<uint32_t>(dividend / divisor);
-      remainder = (dividend % divisor) << divisor_power;
-    } else {
-      divisor <<= divisor_power - exponent;
-      quotient = static_cast<uint32_t>(dividend / divisor);
-      remainder = (dividend % divisor) << exponent;
-    }
-    FillDigits32(quotient, buffer, length);
-    FillDigits64FixedLength(remainder, buffer, length);
-    *decimal_point = *length;
-  } else if (exponent >= 0) {
-    // 0 <= exponent <= 11
-    significand <<= exponent;
-    FillDigits64(significand, buffer, length);
-    *decimal_point = *length;
-  } else if (exponent > -kDoubleSignificandSize) {
-    // We have to cut the number.
-    uint64_t integrals = significand >> -exponent;
-    uint64_t fractionals = significand - (integrals << -exponent);
-    if (integrals > kMaxUInt32) {
-      FillDigits64(integrals, buffer, length);
-    } else {
-      FillDigits32(static_cast<uint32_t>(integrals), buffer, length);
-    }
-    *decimal_point = *length;
-    FillFractionals(fractionals, exponent, fractional_count,
-                    buffer, length, decimal_point);
-  } else if (exponent < -128) {
-    // This configuration (with at most 20 digits) means that all digits must be
-    // 0.
-    ASSERT(fractional_count <= 20);
-    buffer[0] = '\0';
-    *length = 0;
-    *decimal_point = -fractional_count;
-  } else {
-    *decimal_point = 0;
-    FillFractionals(significand, exponent, fractional_count,
-                    buffer, length, decimal_point);
-  }
-  TrimZeros(buffer, length, decimal_point);
-  buffer[*length] = '\0';
-  if ((*length) == 0) {
-    // The string is empty and the decimal_point thus has no importance. Mimick
-    // Gay's dtoa and and set it to -fractional_count.
-    *decimal_point = -fractional_count;
-  }
-  return true;
-}
-
-}  // namespace double_conversion
diff --git a/src/3rdparty/double-conversion/fixed-dtoa.h b/src/3rdparty/double-conversion/fixed-dtoa.h
deleted file mode 100644
index 3bdd08e21f..0000000000
--- a/src/3rdparty/double-conversion/fixed-dtoa.h
+++ /dev/null
@@ -1,56 +0,0 @@
-// Copyright 2010 the V8 project authors. All rights reserved.
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-//       notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-//       copyright notice, this list of conditions and the following
-//       disclaimer in the documentation and/or other materials provided
-//       with the distribution.
-//     * Neither the name of Google Inc. nor the names of its
-//       contributors may be used to endorse or promote products derived
-//       from this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-#ifndef DOUBLE_CONVERSION_FIXED_DTOA_H_
-#define DOUBLE_CONVERSION_FIXED_DTOA_H_
-
-#include "utils.h"
-
-namespace double_conversion {
-
-// Produces digits necessary to print a given number with
-// 'fractional_count' digits after the decimal point.
-// The buffer must be big enough to hold the result plus one terminating null
-// character.
-//
-// The produced digits might be too short in which case the caller has to fill
-// the gaps with '0's.
-// Example: FastFixedDtoa(0.001, 5, ...) is allowed to return buffer = "1", and
-// decimal_point = -2.
-// Halfway cases are rounded towards +/-Infinity (away from 0). The call
-// FastFixedDtoa(0.15, 2, ...) thus returns buffer = "2", decimal_point = 0.
-// The returned buffer may contain digits that would be truncated from the
-// shortest representation of the input.
-//
-// This method only works for some parameters. If it can't handle the input it
-// returns false. The output is null-terminated when the function succeeds.
-bool FastFixedDtoa(double v, int fractional_count,
-                   Vector<char> buffer, int* length, int* decimal_point);
-
-}  // namespace double_conversion
-
-#endif  // DOUBLE_CONVERSION_FIXED_DTOA_H_
diff --git a/src/3rdparty/double-conversion/ieee.h b/src/3rdparty/double-conversion/ieee.h
deleted file mode 100644
index 661141d1a8..0000000000
--- a/src/3rdparty/double-conversion/ieee.h
+++ /dev/null
@@ -1,402 +0,0 @@
-// Copyright 2012 the V8 project authors. All rights reserved.
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-//       notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-//       copyright notice, this list of conditions and the following
-//       disclaimer in the documentation and/or other materials provided
-//       with the distribution.
-//     * Neither the name of Google Inc. nor the names of its
-//       contributors may be used to endorse or promote products derived
-//       from this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-#ifndef DOUBLE_CONVERSION_DOUBLE_H_
-#define DOUBLE_CONVERSION_DOUBLE_H_
-
-#include "diy-fp.h"
-
-namespace double_conversion {
-
-// We assume that doubles and uint64_t have the same endianness.
-static uint64_t double_to_uint64(double d) { return BitCast<uint64_t>(d); }
-static double uint64_to_double(uint64_t d64) { return BitCast<double>(d64); }
-static uint32_t float_to_uint32(float f) { return BitCast<uint32_t>(f); }
-static float uint32_to_float(uint32_t d32) { return BitCast<float>(d32); }
-
-// Helper functions for doubles.
-class Double {
- public:
-  static const uint64_t kSignMask = UINT64_2PART_C(0x80000000, 00000000);
-  static const uint64_t kExponentMask = UINT64_2PART_C(0x7FF00000, 00000000);
-  static const uint64_t kSignificandMask = UINT64_2PART_C(0x000FFFFF, FFFFFFFF);
-  static const uint64_t kHiddenBit = UINT64_2PART_C(0x00100000, 00000000);
-  static const int kPhysicalSignificandSize = 52;  // Excludes the hidden bit.
-  static const int kSignificandSize = 53;
-
-  Double() : d64_(0) {}
-  explicit Double(double d) : d64_(double_to_uint64(d)) {}
-  explicit Double(uint64_t d64) : d64_(d64) {}
-  explicit Double(DiyFp diy_fp)
-    : d64_(DiyFpToUint64(diy_fp)) {}
-
-  // The value encoded by this Double must be greater or equal to +0.0.
-  // It must not be special (infinity, or NaN).
-  DiyFp AsDiyFp() const {
-    ASSERT(Sign() > 0);
-    ASSERT(!IsSpecial());
-    return DiyFp(Significand(), Exponent());
-  }
-
-  // The value encoded by this Double must be strictly greater than 0.
-  DiyFp AsNormalizedDiyFp() const {
-    ASSERT(value() > 0.0);
-    uint64_t f = Significand();
-    int e = Exponent();
-
-    // The current double could be a denormal.
-    while ((f & kHiddenBit) == 0) {
-      f <<= 1;
-      e--;
-    }
-    // Do the final shifts in one go.
-    f <<= DiyFp::kSignificandSize - kSignificandSize;
-    e -= DiyFp::kSignificandSize - kSignificandSize;
-    return DiyFp(f, e);
-  }
-
-  // Returns the double's bit as uint64.
-  uint64_t AsUint64() const {
-    return d64_;
-  }
-
-  // Returns the next greater double. Returns +infinity on input +infinity.
-  double NextDouble() const {
-    if (d64_ == kInfinity) return Double(kInfinity).value();
-    if (Sign() < 0 && Significand() == 0) {
-      // -0.0
-      return 0.0;
-    }
-    if (Sign() < 0) {
-      return Double(d64_ - 1).value();
-    } else {
-      return Double(d64_ + 1).value();
-    }
-  }
-
-  double PreviousDouble() const {
-    if (d64_ == (kInfinity | kSignMask)) return -Double::Infinity();
-    if (Sign() < 0) {
-      return Double(d64_ + 1).value();
-    } else {
-      if (Significand() == 0) return -0.0;
-      return Double(d64_ - 1).value();
-    }
-  }
-
-  int Exponent() const {
-    if (IsDenormal()) return kDenormalExponent;
-
-    uint64_t d64 = AsUint64();
-    int biased_e =
-        static_cast<int>((d64 & kExponentMask) >> kPhysicalSignificandSize);
-    return biased_e - kExponentBias;
-  }
-
-  uint64_t Significand() const {
-    uint64_t d64 = AsUint64();
-    uint64_t significand = d64 & kSignificandMask;
-    if (!IsDenormal()) {
-      return significand + kHiddenBit;
-    } else {
-      return significand;
-    }
-  }
-
-  // Returns true if the double is a denormal.
-  bool IsDenormal() const {
-    uint64_t d64 = AsUint64();
-    return (d64 & kExponentMask) == 0;
-  }
-
-  // We consider denormals not to be special.
-  // Hence only Infinity and NaN are special.
-  bool IsSpecial() const {
-    uint64_t d64 = AsUint64();
-    return (d64 & kExponentMask) == kExponentMask;
-  }
-
-  bool IsNan() const {
-    uint64_t d64 = AsUint64();
-    return ((d64 & kExponentMask) == kExponentMask) &&
-        ((d64 & kSignificandMask) != 0);
-  }
-
-  bool IsInfinite() const {
-    uint64_t d64 = AsUint64();
-    return ((d64 & kExponentMask) == kExponentMask) &&
-        ((d64 & kSignificandMask) == 0);
-  }
-
-  int Sign() const {
-    uint64_t d64 = AsUint64();
-    return (d64 & kSignMask) == 0? 1: -1;
-  }
-
-  // Precondition: the value encoded by this Double must be greater or equal
-  // than +0.0.
-  DiyFp UpperBoundary() const {
-    ASSERT(Sign() > 0);
-    return DiyFp(Significand() * 2 + 1, Exponent() - 1);
-  }
-
-  // Computes the two boundaries of this.
-  // The bigger boundary (m_plus) is normalized. The lower boundary has the same
-  // exponent as m_plus.
-  // Precondition: the value encoded by this Double must be greater than 0.
-  void NormalizedBoundaries(DiyFp* out_m_minus, DiyFp* out_m_plus) const {
-    ASSERT(value() > 0.0);
-    DiyFp v = this->AsDiyFp();
-    DiyFp m_plus = DiyFp::Normalize(DiyFp((v.f() << 1) + 1, v.e() - 1));
-    DiyFp m_minus;
-    if (LowerBoundaryIsCloser()) {
-      m_minus = DiyFp((v.f() << 2) - 1, v.e() - 2);
-    } else {
-      m_minus = DiyFp((v.f() << 1) - 1, v.e() - 1);
-    }
-    m_minus.set_f(m_minus.f() << (m_minus.e() - m_plus.e()));
-    m_minus.set_e(m_plus.e());
-    *out_m_plus = m_plus;
-    *out_m_minus = m_minus;
-  }
-
-  bool LowerBoundaryIsCloser() const {
-    // The boundary is closer if the significand is of the form f == 2^p-1 then
-    // the lower boundary is closer.
-    // Think of v = 1000e10 and v- = 9999e9.
-    // Then the boundary (== (v - v-)/2) is not just at a distance of 1e9 but
-    // at a distance of 1e8.
-    // The only exception is for the smallest normal: the largest denormal is
-    // at the same distance as its successor.
-    // Note: denormals have the same exponent as the smallest normals.
-    bool physical_significand_is_zero = ((AsUint64() & kSignificandMask) == 0);
-    return physical_significand_is_zero && (Exponent() != kDenormalExponent);
-  }
-
-  double value() const { return uint64_to_double(d64_); }
-
-  // Returns the significand size for a given order of magnitude.
-  // If v = f*2^e with 2^p-1 <= f <= 2^p then p+e is v's order of magnitude.
-  // This function returns the number of significant binary digits v will have
-  // once it's encoded into a double. In almost all cases this is equal to
-  // kSignificandSize. The only exceptions are denormals. They start with
-  // leading zeroes and their effective significand-size is hence smaller.
-  static int SignificandSizeForOrderOfMagnitude(int order) {
-    if (order >= (kDenormalExponent + kSignificandSize)) {
-      return kSignificandSize;
-    }
-    if (order <= kDenormalExponent) return 0;
-    return order - kDenormalExponent;
-  }
-
-  static double Infinity() {
-    return Double(kInfinity).value();
-  }
-
-  static double NaN() {
-    return Double(kNaN).value();
-  }
-
- private:
-  static const int kExponentBias = 0x3FF + kPhysicalSignificandSize;
-  static const int kDenormalExponent = -kExponentBias + 1;
-  static const int kMaxExponent = 0x7FF - kExponentBias;
-  static const uint64_t kInfinity = UINT64_2PART_C(0x7FF00000, 00000000);
-  static const uint64_t kNaN = UINT64_2PART_C(0x7FF80000, 00000000);
-
-  const uint64_t d64_;
-
-  static uint64_t DiyFpToUint64(DiyFp diy_fp) {
-    uint64_t significand = diy_fp.f();
-    int exponent = diy_fp.e();
-    while (significand > kHiddenBit + kSignificandMask) {
-      significand >>= 1;
-      exponent++;
-    }
-    if (exponent >= kMaxExponent) {
-      return kInfinity;
-    }
-    if (exponent < kDenormalExponent) {
-      return 0;
-    }
-    while (exponent > kDenormalExponent && (significand & kHiddenBit) == 0) {
-      significand <<= 1;
-      exponent--;
-    }
-    uint64_t biased_exponent;
-    if (exponent == kDenormalExponent && (significand & kHiddenBit) == 0) {
-      biased_exponent = 0;
-    } else {
-      biased_exponent = static_cast<uint64_t>(exponent + kExponentBias);
-    }
-    return (significand & kSignificandMask) |
-        (biased_exponent << kPhysicalSignificandSize);
-  }
-
-  DISALLOW_COPY_AND_ASSIGN(Double);
-};
-
-class Single {
- public:
-  static const uint32_t kSignMask = 0x80000000;
-  static const uint32_t kExponentMask = 0x7F800000;
-  static const uint32_t kSignificandMask = 0x007FFFFF;
-  static const uint32_t kHiddenBit = 0x00800000;
-  static const int kPhysicalSignificandSize = 23;  // Excludes the hidden bit.
-  static const int kSignificandSize = 24;
-
-  Single() : d32_(0) {}
-  explicit Single(float f) : d32_(float_to_uint32(f)) {}
-  explicit Single(uint32_t d32) : d32_(d32) {}
-
-  // The value encoded by this Single must be greater or equal to +0.0.
-  // It must not be special (infinity, or NaN).
-  DiyFp AsDiyFp() const {
-    ASSERT(Sign() > 0);
-    ASSERT(!IsSpecial());
-    return DiyFp(Significand(), Exponent());
-  }
-
-  // Returns the single's bit as uint64.
-  uint32_t AsUint32() const {
-    return d32_;
-  }
-
-  int Exponent() const {
-    if (IsDenormal()) return kDenormalExponent;
-
-    uint32_t d32 = AsUint32();
-    int biased_e =
-        static_cast<int>((d32 & kExponentMask) >> kPhysicalSignificandSize);
-    return biased_e - kExponentBias;
-  }
-
-  uint32_t Significand() const {
-    uint32_t d32 = AsUint32();
-    uint32_t significand = d32 & kSignificandMask;
-    if (!IsDenormal()) {
-      return significand + kHiddenBit;
-    } else {
-      return significand;
-    }
-  }
-
-  // Returns true if the single is a denormal.
-  bool IsDenormal() const {
-    uint32_t d32 = AsUint32();
-    return (d32 & kExponentMask) == 0;
-  }
-
-  // We consider denormals not to be special.
-  // Hence only Infinity and NaN are special.
-  bool IsSpecial() const {
-    uint32_t d32 = AsUint32();
-    return (d32 & kExponentMask) == kExponentMask;
-  }
-
-  bool IsNan() const {
-    uint32_t d32 = AsUint32();
-    return ((d32 & kExponentMask) == kExponentMask) &&
-        ((d32 & kSignificandMask) != 0);
-  }
-
-  bool IsInfinite() const {
-    uint32_t d32 = AsUint32();
-    return ((d32 & kExponentMask) == kExponentMask) &&
-        ((d32 & kSignificandMask) == 0);
-  }
-
-  int Sign() const {
-    uint32_t d32 = AsUint32();
-    return (d32 & kSignMask) == 0? 1: -1;
-  }
-
-  // Computes the two boundaries of this.
-  // The bigger boundary (m_plus) is normalized. The lower boundary has the same
-  // exponent as m_plus.
-  // Precondition: the value encoded by this Single must be greater than 0.
-  void NormalizedBoundaries(DiyFp* out_m_minus, DiyFp* out_m_plus) const {
-    ASSERT(value() > 0.0);
-    DiyFp v = this->AsDiyFp();
-    DiyFp m_plus = DiyFp::Normalize(DiyFp((v.f() << 1) + 1, v.e() - 1));
-    DiyFp m_minus;
-    if (LowerBoundaryIsCloser()) {
-      m_minus = DiyFp((v.f() << 2) - 1, v.e() - 2);
-    } else {
-      m_minus = DiyFp((v.f() << 1) - 1, v.e() - 1);
-    }
-    m_minus.set_f(m_minus.f() << (m_minus.e() - m_plus.e()));
-    m_minus.set_e(m_plus.e());
-    *out_m_plus = m_plus;
-    *out_m_minus = m_minus;
-  }
-
-  // Precondition: the value encoded by this Single must be greater or equal
-  // than +0.0.
-  DiyFp UpperBoundary() const {
-    ASSERT(Sign() > 0);
-    return DiyFp(Significand() * 2 + 1, Exponent() - 1);
-  }
-
-  bool LowerBoundaryIsCloser() const {
-    // The boundary is closer if the significand is of the form f == 2^p-1 then
-    // the lower boundary is closer.
-    // Think of v = 1000e10 and v- = 9999e9.
-    // Then the boundary (== (v - v-)/2) is not just at a distance of 1e9 but
-    // at a distance of 1e8.
-    // The only exception is for the smallest normal: the largest denormal is
-    // at the same distance as its successor.
-    // Note: denormals have the same exponent as the smallest normals.
-    bool physical_significand_is_zero = ((AsUint32() & kSignificandMask) == 0);
-    return physical_significand_is_zero && (Exponent() != kDenormalExponent);
-  }
-
-  float value() const { return uint32_to_float(d32_); }
-
-  static float Infinity() {
-    return Single(kInfinity).value();
-  }
-
-  static float NaN() {
-    return Single(kNaN).value();
-  }
-
- private:
-  static const int kExponentBias = 0x7F + kPhysicalSignificandSize;
-  static const int kDenormalExponent = -kExponentBias + 1;
-  static const int kMaxExponent = 0xFF - kExponentBias;
-  static const uint32_t kInfinity = 0x7F800000;
-  static const uint32_t kNaN = 0x7FC00000;
-
-  const uint32_t d32_;
-
-  DISALLOW_COPY_AND_ASSIGN(Single);
-};
-
-}  // namespace double_conversion
-
-#endif  // DOUBLE_CONVERSION_DOUBLE_H_
diff --git a/src/3rdparty/double-conversion/strtod.cc b/src/3rdparty/double-conversion/strtod.cc
deleted file mode 100644
index 34717562bd..0000000000
--- a/src/3rdparty/double-conversion/strtod.cc
+++ /dev/null
@@ -1,555 +0,0 @@
-// Copyright 2010 the V8 project authors. All rights reserved.
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-//       notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-//       copyright notice, this list of conditions and the following
-//       disclaimer in the documentation and/or other materials provided
-//       with the distribution.
-//     * Neither the name of Google Inc. nor the names of its
-//       contributors may be used to endorse or promote products derived
-//       from this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-#include <stdarg.h>
-#include <limits.h>
-
-#include "strtod.h"
-#include "bignum.h"
-#include "cached-powers.h"
-#include "ieee.h"
-
-namespace double_conversion {
-
-// 2^53 = 9007199254740992.
-// Any integer with at most 15 decimal digits will hence fit into a double
-// (which has a 53bit significand) without loss of precision.
-static const int kMaxExactDoubleIntegerDecimalDigits = 15;
-// 2^64 = 18446744073709551616 > 10^19
-static const int kMaxUint64DecimalDigits = 19;
-
-// Max double: 1.7976931348623157 x 10^308
-// Min non-zero double: 4.9406564584124654 x 10^-324
-// Any x >= 10^309 is interpreted as +infinity.
-// Any x <= 10^-324 is interpreted as 0.
-// Note that 2.5e-324 (despite being smaller than the min double) will be read
-// as non-zero (equal to the min non-zero double).
-static const int kMaxDecimalPower = 309;
-static const int kMinDecimalPower = -324;
-
-// 2^64 = 18446744073709551616
-static const uint64_t kMaxUint64 = UINT64_2PART_C(0xFFFFFFFF, FFFFFFFF);
-
-
-static const double exact_powers_of_ten[] = {
-  1.0,  // 10^0
-  10.0,
-  100.0,
-  1000.0,
-  10000.0,
-  100000.0,
-  1000000.0,
-  10000000.0,
-  100000000.0,
-  1000000000.0,
-  10000000000.0,  // 10^10
-  100000000000.0,
-  1000000000000.0,
-  10000000000000.0,
-  100000000000000.0,
-  1000000000000000.0,
-  10000000000000000.0,
-  100000000000000000.0,
-  1000000000000000000.0,
-  10000000000000000000.0,
-  100000000000000000000.0,  // 10^20
-  1000000000000000000000.0,
-  // 10^22 = 0x21e19e0c9bab2400000 = 0x878678326eac9 * 2^22
-  10000000000000000000000.0
-};
-static const int kExactPowersOfTenSize = ARRAY_SIZE(exact_powers_of_ten);
-
-// Maximum number of significant digits in the decimal representation.
-// In fact the value is 772 (see conversions.cc), but to give us some margin
-// we round up to 780.
-static const int kMaxSignificantDecimalDigits = 780;
-
-static Vector<const char> TrimLeadingZeros(Vector<const char> buffer) {
-  for (int i = 0; i < buffer.length(); i++) {
-    if (buffer[i] != '0') {
-      return buffer.SubVector(i, buffer.length());
-    }
-  }
-  return Vector<const char>(buffer.start(), 0);
-}
-
-
-static Vector<const char> TrimTrailingZeros(Vector<const char> buffer) {
-  for (int i = buffer.length() - 1; i >= 0; --i) {
-    if (buffer[i] != '0') {
-      return buffer.SubVector(0, i + 1);
-    }
-  }
-  return Vector<const char>(buffer.start(), 0);
-}
-
-
-static void CutToMaxSignificantDigits(Vector<const char> buffer,
-                                       int exponent,
-                                       char* significant_buffer,
-                                       int* significant_exponent) {
-  for (int i = 0; i < kMaxSignificantDecimalDigits - 1; ++i) {
-    significant_buffer[i] = buffer[i];
-  }
-  // The input buffer has been trimmed. Therefore the last digit must be
-  // different from '0'.
-  ASSERT(buffer[buffer.length() - 1] != '0');
-  // Set the last digit to be non-zero. This is sufficient to guarantee
-  // correct rounding.
-  significant_buffer[kMaxSignificantDecimalDigits - 1] = '1';
-  *significant_exponent =
-      exponent + (buffer.length() - kMaxSignificantDecimalDigits);
-}
-
-
-// Trims the buffer and cuts it to at most kMaxSignificantDecimalDigits.
-// If possible the input-buffer is reused, but if the buffer needs to be
-// modified (due to cutting), then the input needs to be copied into the
-// buffer_copy_space.
-static void TrimAndCut(Vector<const char> buffer, int exponent,
-                       char* buffer_copy_space, int space_size,
-                       Vector<const char>* trimmed, int* updated_exponent) {
-  Vector<const char> left_trimmed = TrimLeadingZeros(buffer);
-  Vector<const char> right_trimmed = TrimTrailingZeros(left_trimmed);
-  exponent += left_trimmed.length() - right_trimmed.length();
-  if (right_trimmed.length() > kMaxSignificantDecimalDigits) {
-    (void) space_size;  // Mark variable as used.
-    ASSERT(space_size >= kMaxSignificantDecimalDigits);
-    CutToMaxSignificantDigits(right_trimmed, exponent,
-                              buffer_copy_space, updated_exponent);
-    *trimmed = Vector<const char>(buffer_copy_space,
-                                 kMaxSignificantDecimalDigits);
-  } else {
-    *trimmed = right_trimmed;
-    *updated_exponent = exponent;
-  }
-}
-
-
-// Reads digits from the buffer and converts them to a uint64.
-// Reads in as many digits as fit into a uint64.
-// When the string starts with "1844674407370955161" no further digit is read.
-// Since 2^64 = 18446744073709551616 it would still be possible read another
-// digit if it was less or equal than 6, but this would complicate the code.
-static uint64_t ReadUint64(Vector<const char> buffer,
-                           int* number_of_read_digits) {
-  uint64_t result = 0;
-  int i = 0;
-  while (i < buffer.length() && result <= (kMaxUint64 / 10 - 1)) {
-    int digit = buffer[i++] - '0';
-    ASSERT(0 <= digit && digit <= 9);
-    result = 10 * result + digit;
-  }
-  *number_of_read_digits = i;
-  return result;
-}
-
-
-// Reads a DiyFp from the buffer.
-// The returned DiyFp is not necessarily normalized.
-// If remaining_decimals is zero then the returned DiyFp is accurate.
-// Otherwise it has been rounded and has error of at most 1/2 ulp.
-static void ReadDiyFp(Vector<const char> buffer,
-                      DiyFp* result,
-                      int* remaining_decimals) {
-  int read_digits;
-  uint64_t significand = ReadUint64(buffer, &read_digits);
-  if (buffer.length() == read_digits) {
-    *result = DiyFp(significand, 0);
-    *remaining_decimals = 0;
-  } else {
-    // Round the significand.
-    if (buffer[read_digits] >= '5') {
-      significand++;
-    }
-    // Compute the binary exponent.
-    int exponent = 0;
-    *result = DiyFp(significand, exponent);
-    *remaining_decimals = buffer.length() - read_digits;
-  }
-}
-
-
-static bool DoubleStrtod(Vector<const char> trimmed,
-                         int exponent,
-                         double* result) {
-#if !defined(DOUBLE_CONVERSION_CORRECT_DOUBLE_OPERATIONS)
-  // On x86 the floating-point stack can be 64 or 80 bits wide. If it is
-  // 80 bits wide (as is the case on Linux) then double-rounding occurs and the
-  // result is not accurate.
-  // We know that Windows32 uses 64 bits and is therefore accurate.
-  // Note that the ARM simulator is compiled for 32bits. It therefore exhibits
-  // the same problem.
-  return false;
-#endif
-  if (trimmed.length() <= kMaxExactDoubleIntegerDecimalDigits) {
-    int read_digits;
-    // The trimmed input fits into a double.
-    // If the 10^exponent (resp. 10^-exponent) fits into a double too then we
-    // can compute the result-double simply by multiplying (resp. dividing) the
-    // two numbers.
-    // This is possible because IEEE guarantees that floating-point operations
-    // return the best possible approximation.
-    if (exponent < 0 && -exponent < kExactPowersOfTenSize) {
-      // 10^-exponent fits into a double.
-      *result = static_cast<double>(ReadUint64(trimmed, &read_digits));
-      ASSERT(read_digits == trimmed.length());
-      *result /= exact_powers_of_ten[-exponent];
-      return true;
-    }
-    if (0 <= exponent && exponent < kExactPowersOfTenSize) {
-      // 10^exponent fits into a double.
-      *result = static_cast<double>(ReadUint64(trimmed, &read_digits));
-      ASSERT(read_digits == trimmed.length());
-      *result *= exact_powers_of_ten[exponent];
-      return true;
-    }
-    int remaining_digits =
-        kMaxExactDoubleIntegerDecimalDigits - trimmed.length();
-    if ((0 <= exponent) &&
-        (exponent - remaining_digits < kExactPowersOfTenSize)) {
-      // The trimmed string was short and we can multiply it with
-      // 10^remaining_digits. As a result the remaining exponent now fits
-      // into a double too.
-      *result = static_cast<double>(ReadUint64(trimmed, &read_digits));
-      ASSERT(read_digits == trimmed.length());
-      *result *= exact_powers_of_ten[remaining_digits];
-      *result *= exact_powers_of_ten[exponent - remaining_digits];
-      return true;
-    }
-  }
-  return false;
-}
-
-
-// Returns 10^exponent as an exact DiyFp.
-// The given exponent must be in the range [1; kDecimalExponentDistance[.
-static DiyFp AdjustmentPowerOfTen(int exponent) {
-  ASSERT(0 < exponent);
-  ASSERT(exponent < PowersOfTenCache::kDecimalExponentDistance);
-  // Simply hardcode the remaining powers for the given decimal exponent
-  // distance.
-  ASSERT(PowersOfTenCache::kDecimalExponentDistance == 8);
-  switch (exponent) {
-    case 1: return DiyFp(UINT64_2PART_C(0xa0000000, 00000000), -60);
-    case 2: return DiyFp(UINT64_2PART_C(0xc8000000, 00000000), -57);
-    case 3: return DiyFp(UINT64_2PART_C(0xfa000000, 00000000), -54);
-    case 4: return DiyFp(UINT64_2PART_C(0x9c400000, 00000000), -50);
-    case 5: return DiyFp(UINT64_2PART_C(0xc3500000, 00000000), -47);
-    case 6: return DiyFp(UINT64_2PART_C(0xf4240000, 00000000), -44);
-    case 7: return DiyFp(UINT64_2PART_C(0x98968000, 00000000), -40);
-    default:
-      UNREACHABLE();
-  }
-}
-
-
-// If the function returns true then the result is the correct double.
-// Otherwise it is either the correct double or the double that is just below
-// the correct double.
-static bool DiyFpStrtod(Vector<const char> buffer,
-                        int exponent,
-                        double* result) {
-  DiyFp input;
-  int remaining_decimals;
-  ReadDiyFp(buffer, &input, &remaining_decimals);
-  // Since we may have dropped some digits the input is not accurate.
-  // If remaining_decimals is different than 0 than the error is at most
-  // .5 ulp (unit in the last place).
-  // We don't want to deal with fractions and therefore keep a common
-  // denominator.
-  const int kDenominatorLog = 3;
-  const int kDenominator = 1 << kDenominatorLog;
-  // Move the remaining decimals into the exponent.
-  exponent += remaining_decimals;
-  int error = (remaining_decimals == 0 ? 0 : kDenominator / 2);
-
-  int old_e = input.e();
-  input.Normalize();
-  error <<= old_e - input.e();
-
-  ASSERT(exponent <= PowersOfTenCache::kMaxDecimalExponent);
-  if (exponent < PowersOfTenCache::kMinDecimalExponent) {
-    *result = 0.0;
-    return true;
-  }
-  DiyFp cached_power;
-  int cached_decimal_exponent;
-  PowersOfTenCache::GetCachedPowerForDecimalExponent(exponent,
-                                                     &cached_power,
-                                                     &cached_decimal_exponent);
-
-  if (cached_decimal_exponent != exponent) {
-    int adjustment_exponent = exponent - cached_decimal_exponent;
-    DiyFp adjustment_power = AdjustmentPowerOfTen(adjustment_exponent);
-    input.Multiply(adjustment_power);
-    if (kMaxUint64DecimalDigits - buffer.length() >= adjustment_exponent) {
-      // The product of input with the adjustment power fits into a 64 bit
-      // integer.
-      ASSERT(DiyFp::kSignificandSize == 64);
-    } else {
-      // The adjustment power is exact. There is hence only an error of 0.5.
-      error += kDenominator / 2;
-    }
-  }
-
-  input.Multiply(cached_power);
-  // The error introduced by a multiplication of a*b equals
-  //   error_a + error_b + error_a*error_b/2^64 + 0.5
-  // Substituting a with 'input' and b with 'cached_power' we have
-  //   error_b = 0.5  (all cached powers have an error of less than 0.5 ulp),
-  //   error_ab = 0 or 1 / kDenominator > error_a*error_b/ 2^64
-  int error_b = kDenominator / 2;
-  int error_ab = (error == 0 ? 0 : 1);  // We round up to 1.
-  int fixed_error = kDenominator / 2;
-  error += error_b + error_ab + fixed_error;
-
-  old_e = input.e();
-  input.Normalize();
-  error <<= old_e - input.e();
-
-  // See if the double's significand changes if we add/subtract the error.
-  int order_of_magnitude = DiyFp::kSignificandSize + input.e();
-  int effective_significand_size =
-      Double::SignificandSizeForOrderOfMagnitude(order_of_magnitude);
-  int precision_digits_count =
-      DiyFp::kSignificandSize - effective_significand_size;
-  if (precision_digits_count + kDenominatorLog >= DiyFp::kSignificandSize) {
-    // This can only happen for very small denormals. In this case the
-    // half-way multiplied by the denominator exceeds the range of an uint64.
-    // Simply shift everything to the right.
-    int shift_amount = (precision_digits_count + kDenominatorLog) -
-        DiyFp::kSignificandSize + 1;
-    input.set_f(input.f() >> shift_amount);
-    input.set_e(input.e() + shift_amount);
-    // We add 1 for the lost precision of error, and kDenominator for
-    // the lost precision of input.f().
-    error = (error >> shift_amount) + 1 + kDenominator;
-    precision_digits_count -= shift_amount;
-  }
-  // We use uint64_ts now. This only works if the DiyFp uses uint64_ts too.
-  ASSERT(DiyFp::kSignificandSize == 64);
-  ASSERT(precision_digits_count < 64);
-  uint64_t one64 = 1;
-  uint64_t precision_bits_mask = (one64 << precision_digits_count) - 1;
-  uint64_t precision_bits = input.f() & precision_bits_mask;
-  uint64_t half_way = one64 << (precision_digits_count - 1);
-  precision_bits *= kDenominator;
-  half_way *= kDenominator;
-  DiyFp rounded_input(input.f() >> precision_digits_count,
-                      input.e() + precision_digits_count);
-  if (precision_bits >= half_way + error) {
-    rounded_input.set_f(rounded_input.f() + 1);
-  }
-  // If the last_bits are too close to the half-way case than we are too
-  // inaccurate and round down. In this case we return false so that we can
-  // fall back to a more precise algorithm.
-
-  *result = Double(rounded_input).value();
-  if (half_way - error < precision_bits && precision_bits < half_way + error) {
-    // Too imprecise. The caller will have to fall back to a slower version.
-    // However the returned number is guaranteed to be either the correct
-    // double, or the next-lower double.
-    return false;
-  } else {
-    return true;
-  }
-}
-
-
-// Returns
-//   - -1 if buffer*10^exponent < diy_fp.
-//   -  0 if buffer*10^exponent == diy_fp.
-//   - +1 if buffer*10^exponent > diy_fp.
-// Preconditions:
-//   buffer.length() + exponent <= kMaxDecimalPower + 1
-//   buffer.length() + exponent > kMinDecimalPower
-//   buffer.length() <= kMaxDecimalSignificantDigits
-static int CompareBufferWithDiyFp(Vector<const char> buffer,
-                                  int exponent,
-                                  DiyFp diy_fp) {
-  ASSERT(buffer.length() + exponent <= kMaxDecimalPower + 1);
-  ASSERT(buffer.length() + exponent > kMinDecimalPower);
-  ASSERT(buffer.length() <= kMaxSignificantDecimalDigits);
-  // Make sure that the Bignum will be able to hold all our numbers.
-  // Our Bignum implementation has a separate field for exponents. Shifts will
-  // consume at most one bigit (< 64 bits).
-  // ln(10) == 3.3219...
-  ASSERT(((kMaxDecimalPower + 1) * 333 / 100) < Bignum::kMaxSignificantBits);
-  Bignum buffer_bignum;
-  Bignum diy_fp_bignum;
-  buffer_bignum.AssignDecimalString(buffer);
-  diy_fp_bignum.AssignUInt64(diy_fp.f());
-  if (exponent >= 0) {
-    buffer_bignum.MultiplyByPowerOfTen(exponent);
-  } else {
-    diy_fp_bignum.MultiplyByPowerOfTen(-exponent);
-  }
-  if (diy_fp.e() > 0) {
-    diy_fp_bignum.ShiftLeft(diy_fp.e());
-  } else {
-    buffer_bignum.ShiftLeft(-diy_fp.e());
-  }
-  return Bignum::Compare(buffer_bignum, diy_fp_bignum);
-}
-
-
-// Returns true if the guess is the correct double.
-// Returns false, when guess is either correct or the next-lower double.
-static bool ComputeGuess(Vector<const char> trimmed, int exponent,
-                         double* guess) {
-  if (trimmed.length() == 0) {
-    *guess = 0.0;
-    return true;
-  }
-  if (exponent + trimmed.length() - 1 >= kMaxDecimalPower) {
-    *guess = Double::Infinity();
-    return true;
-  }
-  if (exponent + trimmed.length() <= kMinDecimalPower) {
-    *guess = 0.0;
-    return true;
-  }
-
-  if (DoubleStrtod(trimmed, exponent, guess) ||
-      DiyFpStrtod(trimmed, exponent, guess)) {
-    return true;
-  }
-  if (*guess == Double::Infinity()) {
-    return true;
-  }
-  return false;
-}
-
-double Strtod(Vector<const char> buffer, int exponent) {
-  char copy_buffer[kMaxSignificantDecimalDigits];
-  Vector<const char> trimmed;
-  int updated_exponent;
-  TrimAndCut(buffer, exponent, copy_buffer, kMaxSignificantDecimalDigits,
-             &trimmed, &updated_exponent);
-  exponent = updated_exponent;
-
-  double guess;
-  bool is_correct = ComputeGuess(trimmed, exponent, &guess);
-  if (is_correct) return guess;
-
-  DiyFp upper_boundary = Double(guess).UpperBoundary();
-  int comparison = CompareBufferWithDiyFp(trimmed, exponent, upper_boundary);
-  if (comparison < 0) {
-    return guess;
-  } else if (comparison > 0) {
-    return Double(guess).NextDouble();
-  } else if ((Double(guess).Significand() & 1) == 0) {
-    // Round towards even.
-    return guess;
-  } else {
-    return Double(guess).NextDouble();
-  }
-}
-
-float Strtof(Vector<const char> buffer, int exponent) {
-  char copy_buffer[kMaxSignificantDecimalDigits];
-  Vector<const char> trimmed;
-  int updated_exponent;
-  TrimAndCut(buffer, exponent, copy_buffer, kMaxSignificantDecimalDigits,
-             &trimmed, &updated_exponent);
-  exponent = updated_exponent;
-
-  double double_guess;
-  bool is_correct = ComputeGuess(trimmed, exponent, &double_guess);
-
-  float float_guess = static_cast<float>(double_guess);
-  if (float_guess == double_guess) {
-    // This shortcut triggers for integer values.
-    return float_guess;
-  }
-
-  // We must catch double-rounding. Say the double has been rounded up, and is
-  // now a boundary of a float, and rounds up again. This is why we have to
-  // look at previous too.
-  // Example (in decimal numbers):
-  //    input: 12349
-  //    high-precision (4 digits): 1235
-  //    low-precision (3 digits):
-  //       when read from input: 123
-  //       when rounded from high precision: 124.
-  // To do this we simply look at the neigbors of the correct result and see
-  // if they would round to the same float. If the guess is not correct we have
-  // to look at four values (since two different doubles could be the correct
-  // double).
-
-  double double_next = Double(double_guess).NextDouble();
-  double double_previous = Double(double_guess).PreviousDouble();
-
-  float f1 = static_cast<float>(double_previous);
-  float f2 = float_guess;
-  float f3 = static_cast<float>(double_next);
-  float f4;
-  if (is_correct) {
-    f4 = f3;
-  } else {
-    double double_next2 = Double(double_next).NextDouble();
-    f4 = static_cast<float>(double_next2);
-  }
-  (void) f2;  // Mark variable as used.
-  ASSERT(f1 <= f2 && f2 <= f3 && f3 <= f4);
-
-  // If the guess doesn't lie near a single-precision boundary we can simply
-  // return its float-value.
-  if (f1 == f4) {
-    return float_guess;
-  }
-
-  ASSERT((f1 != f2 && f2 == f3 && f3 == f4) ||
-         (f1 == f2 && f2 != f3 && f3 == f4) ||
-         (f1 == f2 && f2 == f3 && f3 != f4));
-
-  // guess and next are the two possible canditates (in the same way that
-  // double_guess was the lower candidate for a double-precision guess).
-  float guess = f1;
-  float next = f4;
-  DiyFp upper_boundary;
-  if (guess == 0.0f) {
-    float min_float = 1e-45f;
-    upper_boundary = Double(static_cast<double>(min_float) / 2).AsDiyFp();
-  } else {
-    upper_boundary = Single(guess).UpperBoundary();
-  }
-  int comparison = CompareBufferWithDiyFp(trimmed, exponent, upper_boundary);
-  if (comparison < 0) {
-    return guess;
-  } else if (comparison > 0) {
-    return next;
-  } else if ((Single(guess).Significand() & 1) == 0) {
-    // Round towards even.
-    return guess;
-  } else {
-    return next;
-  }
-}
-
-}  // namespace double_conversion
diff --git a/src/3rdparty/double-conversion/strtod.h b/src/3rdparty/double-conversion/strtod.h
deleted file mode 100644
index ed0293b8f5..0000000000
--- a/src/3rdparty/double-conversion/strtod.h
+++ /dev/null
@@ -1,45 +0,0 @@
-// Copyright 2010 the V8 project authors. All rights reserved.
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-//       notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-//       copyright notice, this list of conditions and the following
-//       disclaimer in the documentation and/or other materials provided
-//       with the distribution.
-//     * Neither the name of Google Inc. nor the names of its
-//       contributors may be used to endorse or promote products derived
-//       from this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-#ifndef DOUBLE_CONVERSION_STRTOD_H_
-#define DOUBLE_CONVERSION_STRTOD_H_
-
-#include "utils.h"
-
-namespace double_conversion {
-
-// The buffer must only contain digits in the range [0-9]. It must not
-// contain a dot or a sign. It must not start with '0', and must not be empty.
-double Strtod(Vector<const char> buffer, int exponent);
-
-// The buffer must only contain digits in the range [0-9]. It must not
-// contain a dot or a sign. It must not start with '0', and must not be empty.
-float Strtof(Vector<const char> buffer, int exponent);
-
-}  // namespace double_conversion
-
-#endif  // DOUBLE_CONVERSION_STRTOD_H_
diff --git a/src/3rdparty/double-conversion/utils.h b/src/3rdparty/double-conversion/utils.h
deleted file mode 100644
index 53eec64282..0000000000
--- a/src/3rdparty/double-conversion/utils.h
+++ /dev/null
@@ -1,330 +0,0 @@
-// Copyright 2010 the V8 project authors. All rights reserved.
-// Redistribution and use in source and binary forms, with or without
-// modification, are permitted provided that the following conditions are
-// met:
-//
-//     * Redistributions of source code must retain the above copyright
-//       notice, this list of conditions and the following disclaimer.
-//     * Redistributions in binary form must reproduce the above
-//       copyright notice, this list of conditions and the following
-//       disclaimer in the documentation and/or other materials provided
-//       with the distribution.
-//     * Neither the name of Google Inc. nor the names of its
-//       contributors may be used to endorse or promote products derived
-//       from this software without specific prior written permission.
-//
-// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
-// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
-// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
-// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
-// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
-// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
-// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
-// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
-// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
-#ifndef DOUBLE_CONVERSION_UTILS_H_
-#define DOUBLE_CONVERSION_UTILS_H_
-
-#include <stdlib.h>
-#include <string.h>
-
-#include <assert.h>
-#ifndef ASSERT
-# if defined(WINCE) || defined(_WIN32_WCE)
-#  define ASSERT(condition)
-# else
-#  define ASSERT(condition)         \
-    assert(condition);
-# endif
-#endif
-#ifndef UNIMPLEMENTED
-# define UNIMPLEMENTED() (exit(-1))
-#endif
-#ifndef UNREACHABLE
-# define UNREACHABLE()   (exit(-1))
-#endif
-
-// Double operations detection based on target architecture.
-// Linux uses a 80bit wide floating point stack on x86. This induces double
-// rounding, which in turn leads to wrong results.
-// An easy way to test if the floating-point operations are correct is to
-// evaluate: 89255.0/1e22. If the floating-point stack is 64 bits wide then
-// the result is equal to 89255e-22.
-// The best way to test this, is to create a division-function and to compare
-// the output of the division with the expected result. (Inlining must be
-// disabled.)
-// On Linux,x86 89255e-22 != Div_double(89255.0/1e22)
-#if defined(_M_X64) || defined(__x86_64__) || \
-    defined(__ARMEL__) || defined(__avr32__) || _M_ARM_FP || \
-    defined(__hppa__) || defined(__ia64__) || \
-    defined(__mips__) || \
-    defined(__powerpc__) || defined(__ppc__) || defined(__ppc64__) || \
-    defined(__sparc__) || defined(__sparc) || defined(__s390__) || \
-    defined(__SH4__) || defined(__alpha__) || \
-    defined(_MIPS_ARCH_MIPS32R2) || \
-    defined(__AARCH64EL__)
-#define DOUBLE_CONVERSION_CORRECT_DOUBLE_OPERATIONS 1
-#elif defined(_M_IX86) || defined(__i386__) || defined(__i386)
-#if defined(_WIN32)
-// Windows uses a 64bit wide floating point stack.
-#define DOUBLE_CONVERSION_CORRECT_DOUBLE_OPERATIONS 1
-#else
-#undef DOUBLE_CONVERSION_CORRECT_DOUBLE_OPERATIONS
-#endif  // _WIN32
-#elif defined(WINCE) || defined(_WIN32_WCE)
-#define DOUBLE_CONVERSION_CORRECT_DOUBLE_OPERATIONS 1
-#else
-#error Target architecture was not detected as supported by Double-Conversion.
-#endif
-
-#if defined(__GNUC__)
-#define DOUBLE_CONVERSION_UNUSED __attribute__((unused))
-#else
-#define DOUBLE_CONVERSION_UNUSED
-#endif
-
-#if defined(_WIN32) && !defined(__MINGW32__)
-
-typedef signed char int8_t;
-typedef unsigned char uint8_t;
-typedef short int16_t;  // NOLINT
-typedef unsigned short uint16_t;  // NOLINT
-typedef int int32_t;
-typedef unsigned int uint32_t;
-typedef __int64 int64_t;
-typedef unsigned __int64 uint64_t;
-// intptr_t and friends are defined in crtdefs.h through stdio.h.
-
-#else
-
-#include <stdint.h>
-
-#endif
-
-typedef uint16_t uc16;
-
-// The following macro works on both 32 and 64-bit platforms.
-// Usage: instead of writing 0x1234567890123456
-//      write UINT64_2PART_C(0x12345678,90123456);
-#define UINT64_2PART_C(a, b) (((static_cast<uint64_t>(a) << 32) + 0x##b##u))
-
-
-// The expression ARRAY_SIZE(a) is a compile-time constant of type
-// size_t which represents the number of elements of the given
-// array. You should only use ARRAY_SIZE on statically allocated
-// arrays.
-#ifndef ARRAY_SIZE
-#define ARRAY_SIZE(a)                                   \
-  ((sizeof(a) / sizeof(*(a))) /                         \
-  static_cast<size_t>(!(sizeof(a) % sizeof(*(a)))))
-#endif
-
-// A macro to disallow the evil copy constructor and operator= functions
-// This should be used in the private: declarations for a class
-#ifndef DISALLOW_COPY_AND_ASSIGN
-#define DISALLOW_COPY_AND_ASSIGN(TypeName)      \
-  TypeName(const TypeName&);                    \
-  void operator=(const TypeName&)
-#endif
-
-// A macro to disallow all the implicit constructors, namely the
-// default constructor, copy constructor and operator= functions.
-//
-// This should be used in the private: declarations for a class
-// that wants to prevent anyone from instantiating it. This is
-// especially useful for classes containing only static methods.
-#ifndef DISALLOW_IMPLICIT_CONSTRUCTORS
-#define DISALLOW_IMPLICIT_CONSTRUCTORS(TypeName) \
-  TypeName();                                    \
-  DISALLOW_COPY_AND_ASSIGN(TypeName)
-#endif
-
-namespace double_conversion {
-
-static const int kCharSize = sizeof(char);
-
-// Returns the maximum of the two parameters.
-template <typename T>
-static T Max(T a, T b) {
-  return a < b ? b : a;
-}
-
-
-// Returns the minimum of the two parameters.
-template <typename T>
-static T Min(T a, T b) {
-  return a < b ? a : b;
-}
-
-
-inline int StrLength(const char* string) {
-  size_t length = strlen(string);
-  ASSERT(length == static_cast<size_t>(static_cast<int>(length)));
-  return static_cast<int>(length);
-}
-
-// This is a simplified version of V8's Vector class.
-template <typename T>
-class Vector {
- public:
-  Vector() : start_(NULL), length_(0) {}
-  Vector(T* data, int length) : start_(data), length_(length) {
-    ASSERT(length == 0 || (length > 0 && data != NULL));
-  }
-
-  // Returns a vector using the same backing storage as this one,
-  // spanning from and including 'from', to but not including 'to'.
-  Vector<T> SubVector(int from, int to) {
-    ASSERT(to <= length_);
-    ASSERT(from < to);
-    ASSERT(0 <= from);
-    return Vector<T>(start() + from, to - from);
-  }
-
-  // Returns the length of the vector.
-  int length() const { return length_; }
-
-  // Returns whether or not the vector is empty.
-  bool is_empty() const { return length_ == 0; }
-
-  // Returns the pointer to the start of the data in the vector.
-  T* start() const { return start_; }
-
-  // Access individual vector elements - checks bounds in debug mode.
-  T& operator[](int index) const {
-    ASSERT(0 <= index && index < length_);
-    return start_[index];
-  }
-
-  T& first() { return start_[0]; }
-
-  T& last() { return start_[length_ - 1]; }
-
- private:
-  T* start_;
-  int length_;
-};
-
-
-// Helper class for building result strings in a character buffer. The
-// purpose of the class is to use safe operations that checks the
-// buffer bounds on all operations in debug mode.
-class StringBuilder {
- public:
-  StringBuilder(char* buffer, int size)
-      : buffer_(buffer, size), position_(0) { }
-
-  ~StringBuilder() { if (!is_finalized()) Finalize(); }
-
-  int size() const { return buffer_.length(); }
-
-  // Get the current position in the builder.
-  int position() const {
-    ASSERT(!is_finalized());
-    return position_;
-  }
-
-  // Reset the position.
-  void Reset() { position_ = 0; }
-
-  // Add a single character to the builder. It is not allowed to add
-  // 0-characters; use the Finalize() method to terminate the string
-  // instead.
-  void AddCharacter(char c) {
-    ASSERT(c != '\0');
-    ASSERT(!is_finalized() && position_ < buffer_.length());
-    buffer_[position_++] = c;
-  }
-
-  // Add an entire string to the builder. Uses strlen() internally to
-  // compute the length of the input string.
-  void AddString(const char* s) {
-    AddSubstring(s, StrLength(s));
-  }
-
-  // Add the first 'n' characters of the given string 's' to the
-  // builder. The input string must have enough characters.
-  void AddSubstring(const char* s, int n) {
-    ASSERT(!is_finalized() && position_ + n < buffer_.length());
-    ASSERT(static_cast<size_t>(n) <= strlen(s));
-    memmove(&buffer_[position_], s, n * kCharSize);
-    position_ += n;
-  }
-
-
-  // Add character padding to the builder. If count is non-positive,
-  // nothing is added to the builder.
-  void AddPadding(char c, int count) {
-    for (int i = 0; i < count; i++) {
-      AddCharacter(c);
-    }
-  }
-
-  // Finalize the string by 0-terminating it and returning the buffer.
-  char* Finalize() {
-    ASSERT(!is_finalized() && position_ < buffer_.length());
-    buffer_[position_] = '\0';
-    // Make sure nobody managed to add a 0-character to the
-    // buffer while building the string.
-    ASSERT(strlen(buffer_.start()) == static_cast<size_t>(position_));
-    position_ = -1;
-    ASSERT(is_finalized());
-    return buffer_.start();
-  }
-
- private:
-  Vector<char> buffer_;
-  int position_;
-
-  bool is_finalized() const { return position_ < 0; }
-
-  DISALLOW_IMPLICIT_CONSTRUCTORS(StringBuilder);
-};
-
-// The type-based aliasing rule allows the compiler to assume that pointers of
-// different types (for some definition of different) never alias each other.
-// Thus the following code does not work:
-//
-// float f = foo();
-// int fbits = *(int*)(&f);
-//
-// The compiler 'knows' that the int pointer can't refer to f since the types
-// don't match, so the compiler may cache f in a register, leaving random data
-// in fbits.  Using C++ style casts makes no difference, however a pointer to
-// char data is assumed to alias any other pointer.  This is the 'memcpy
-// exception'.
-//
-// Bit_cast uses the memcpy exception to move the bits from a variable of one
-// type of a variable of another type.  Of course the end result is likely to
-// be implementation dependent.  Most compilers (gcc-4.2 and MSVC 2005)
-// will completely optimize BitCast away.
-//
-// There is an additional use for BitCast.
-// Recent gccs will warn when they see casts that may result in breakage due to
-// the type-based aliasing rule.  If you have checked that there is no breakage
-// you can use BitCast to cast one pointer type to another.  This confuses gcc
-// enough that it can no longer see that you have cast one pointer type to
-// another thus avoiding the warning.
-template <class Dest, class Source>
-inline Dest BitCast(const Source& source) {
-  // Compile time assertion: sizeof(Dest) == sizeof(Source)
-  // A compile error here means your Dest and Source have different sizes.
-  DOUBLE_CONVERSION_UNUSED
-      typedef char VerifySizesAreEqual[sizeof(Dest) == sizeof(Source) ? 1 : -1];
-
-  Dest dest;
-  memmove(&dest, &source, sizeof(dest));
-  return dest;
-}
-
-template <class Dest, class Source>
-inline Dest BitCast(Source* source) {
-  return BitCast<Dest>(reinterpret_cast<uintptr_t>(source));
-}
-
-}  // namespace double_conversion
-
-#endif  // DOUBLE_CONVERSION_UTILS_H_