diff options
Diffstat (limited to 'src/3rdparty/double-conversion/include/double-conversion/utils.h')
| -rw-r--r-- | src/3rdparty/double-conversion/include/double-conversion/utils.h | 90 |
1 files changed, 60 insertions, 30 deletions
diff --git a/src/3rdparty/double-conversion/include/double-conversion/utils.h b/src/3rdparty/double-conversion/include/double-conversion/utils.h index 20bfd36c84..7622fe6162 100644 --- a/src/3rdparty/double-conversion/include/double-conversion/utils.h +++ b/src/3rdparty/double-conversion/include/double-conversion/utils.h @@ -28,25 +28,35 @@ #ifndef DOUBLE_CONVERSION_UTILS_H_ #define DOUBLE_CONVERSION_UTILS_H_ -#include <stdlib.h> -#include <string.h> +#include <cstdlib> +#include <cstring> -#include <assert.h> +#include <cassert> #ifndef ASSERT -# if defined(WINCE) || defined(_WIN32_WCE) -# define ASSERT(condition) -# else -# define ASSERT(condition) \ +#define ASSERT(condition) \ assert(condition); -# endif #endif #ifndef UNIMPLEMENTED -# define UNIMPLEMENTED() (exit(-1)) +#define UNIMPLEMENTED() (abort()) +#endif +#ifndef DOUBLE_CONVERSION_NO_RETURN +#ifdef _MSC_VER +#define DOUBLE_CONVERSION_NO_RETURN __declspec(noreturn) +#else +#define DOUBLE_CONVERSION_NO_RETURN __attribute__((noreturn)) +#endif #endif #ifndef UNREACHABLE -# define UNREACHABLE() (exit(-1)) +#ifdef _MSC_VER +void DOUBLE_CONVERSION_NO_RETURN abort_noreturn(); +inline void abort_noreturn() { abort(); } +#define UNREACHABLE() (abort_noreturn()) +#else +#define UNREACHABLE() (abort()) +#endif #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. @@ -57,16 +67,38 @@ // the output of the division with the expected result. (Inlining must be // disabled.) // On Linux,x86 89255e-22 != Div_double(89255.0/1e22) +// +// For example: +/* +// -- in div.c +double Div_double(double x, double y) { return x / y; } + +// -- in main.c +double Div_double(double x, double y); // Forward declaration. + +int main(int argc, char** argv) { + return Div_double(89255.0, 1e22) == 89255e-22; +} +*/ +// Run as follows ./main || echo "correct" +// +// If it prints "correct" then the architecture should be here, in the "correct" section. #if defined(_M_X64) || defined(__x86_64__) || \ - defined(__ARMEL__) || defined(__avr32__) || _M_ARM_FP || \ + defined(__ARMEL__) || defined(__avr32__) || defined(_M_ARM) || defined(_M_ARM64) || \ defined(__hppa__) || defined(__ia64__) || \ defined(__mips__) || \ defined(__powerpc__) || defined(__ppc__) || defined(__ppc64__) || \ + defined(_POWER) || defined(_ARCH_PPC) || defined(_ARCH_PPC64) || \ defined(__sparc__) || defined(__sparc) || defined(__s390__) || \ defined(__SH4__) || defined(__alpha__) || \ defined(_MIPS_ARCH_MIPS32R2) || \ - defined(__AARCH64EL__) + defined(__AARCH64EL__) || defined(__aarch64__) || defined(__AARCH64EB__) || \ + defined(__riscv) || defined(__EMSCRIPTEN__) || \ + defined(__or1k__) #define DOUBLE_CONVERSION_CORRECT_DOUBLE_OPERATIONS 1 +#elif defined(__mc68000__) || \ + defined(__pnacl__) || defined(__native_client__) +#undef DOUBLE_CONVERSION_CORRECT_DOUBLE_OPERATIONS #elif defined(_M_IX86) || defined(__i386__) || defined(__i386) #if defined(_WIN32) // Windows uses a 64bit wide floating point stack. @@ -81,12 +113,6 @@ #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; @@ -125,8 +151,8 @@ typedef uint16_t uc16; // 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) \ +#ifndef DC_DISALLOW_COPY_AND_ASSIGN +#define DC_DISALLOW_COPY_AND_ASSIGN(TypeName) \ TypeName(const TypeName&); \ void operator=(const TypeName&) #endif @@ -137,10 +163,10 @@ typedef uint16_t uc16; // 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) \ +#ifndef DC_DISALLOW_IMPLICIT_CONSTRUCTORS +#define DC_DISALLOW_IMPLICIT_CONSTRUCTORS(TypeName) \ TypeName(); \ - DISALLOW_COPY_AND_ASSIGN(TypeName) + DC_DISALLOW_COPY_AND_ASSIGN(TypeName) #endif namespace double_conversion { @@ -172,8 +198,8 @@ 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)); + Vector(T* data, int len) : start_(data), length_(len) { + ASSERT(len == 0 || (len > 0 && data != NULL)); } // Returns a vector using the same backing storage as this one, @@ -215,8 +241,8 @@ class Vector { // buffer bounds on all operations in debug mode. class StringBuilder { public: - StringBuilder(char* buffer, int size) - : buffer_(buffer, size), position_(0) { } + StringBuilder(char* buffer, int buffer_size) + : buffer_(buffer, buffer_size), position_(0) { } ~StringBuilder() { if (!is_finalized()) Finalize(); } @@ -282,7 +308,7 @@ class StringBuilder { bool is_finalized() const { return position_ < 0; } - DISALLOW_IMPLICIT_CONSTRUCTORS(StringBuilder); + DC_DISALLOW_IMPLICIT_CONSTRUCTORS(StringBuilder); }; // The type-based aliasing rule allows the compiler to assume that pointers of @@ -313,8 +339,12 @@ 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]; +#if __cplusplus >= 201103L + static_assert(sizeof(Dest) == sizeof(Source), + "source and destination size mismatch"); +#else + typedef char VerifySizesAreEqual[sizeof(Dest) == sizeof(Source) ? 1 : -1]; +#endif Dest dest; memmove(&dest, &source, sizeof(dest)); |