| Commit message (Collapse) | Author | Age | Files | Lines |
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One of our compilers for emscripten coerces all signaling NaNs to
quiet ones, so won't do any actual signaling. Anyone relying on them
to do so shall be disappointed, so it's better that they know about it
at compile-time - or, at least, have the ability to find it out.
Put the signaling NaN producers (and remaining (test) code using them)
under the control of a feature that's disabled when numeric_limits
claims double has no signaling NaN. Assume the bootstrap library
doesn't need signaling NaNs. Sadly, until C++20 <bit>, there's no
contexpr way to test that alleged signalling and quiet NaNs are
actually distinct.
Added some auto-tests for signaling NaN, including that it's distinct
from quiet NaN. Any platform on which the last fails should disable
this feature.
Task-number: QTBUG-77967
Change-Id: I57e9d14bfe276732cd313887adc9acc354d88f08
Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>
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In preparation of Qt6 move away from pre-C++11 macros.
Change-Id: I44126693c20c18eca5620caab4f7e746218e0ce3
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
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The rules of std don't permit us to add an overload for
fpclassify(qfloat16), so we need our own equivalent that we *can*
overload. Deploy it in the few places we use fpclassify().
Extended qnumeric's testing to cover qFpClassify().
Change-Id: Ie5a0a5cc24599d1571404c573d33c682b0d305a5
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Paul Wicking <paul.wicking@qt.io>
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Conflicts:
src/widgets/kernel/qtooltip.cpp
Change-Id: Ic2f9a425359050eb56b3a4e5162cf5e3447058c8
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There's no 64-bit ADD instruction, so we make do with ADD+ADC. This is
what Clang generates. ICC uses the two as well, but then performs some
subtractions to find out if it overflowed. GCC for some inexplicable
reason attempts to use SSE2 if that's enabled, otherwise it performs the
subtractions like ICC.
Alternative implementation which generates better code, but violates
strict aliasing:
uint *low = reinterpret_cast<uint *>(r);
uint *high = low + 1;
return _addcarry_u32(_addcarry_u32(0, unsigned(v1), unsigned(v2), low),
v1 >> 32, v2 >> 32, high);
Manual testing shows this works. tst_qnumeric passes in debug mode. MSVC
2017 15.9 still miscompiles in release mode (reported to MS as [1]).
[1] https://developercommunity.visualstudio.com/content/problem/409039/-addcarry-u32-wrong-results-with-constant-inputs.html
Change-Id: I61ce366d57bc46c89db5fffd15704d53ebd4af3c
Reviewed-by: Thomas Miller <thomaslmiller91@gmail.com>
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>
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Or something I used for debugging.
Change-Id: I61ce366d57bc46c89db5fffd15704e1d010749b6
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>
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Commit 6b875f0625acc6c6a4f8899b829176baaf7d8502 created a macro for it,
but in the multiple updates to find the best solution, we forgot to use
it.
Fixes: QTBUG-72429
Change-Id: I4ac1156702324f0fb814fffd156f27c1789d1409
Reviewed-by: Thomas Miller <thomaslmiller91@gmail.com>
Reviewed-by: Janne Koskinen <janne.p.koskinen@qt.io>
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
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Change-Id: Ia7c79614e6ef21222fb9683b540ac51b45a77c49
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
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Add 64bit specializations for mul_overflow.
Change-Id: I8bba69233dd71b94346983a100cf4d69bfc686f7
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
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If we ever need to add QCborValue to the bootstrap library, it's
unlikely that we'll need this part. And by splitting it, I can make the
code handle more cases, that hadn't been properly handled before.
Change-Id: I2f630efbbce54f14bfa9fffd154160c0ad893695
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
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Complete 43c44d05ca6af4ec78c1dea84635375a637ff80d to cover builds
using Windows ICC.
Change-Id: I5f4d62f17b54835a58f3002744574c514cce5e39
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
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Commit 29bc68cf169b8cf87d306a1c72e12eb9b6fbfce7 added support for
unsigned and commit 5ff7a3d96e0ce0dcb3d388b53d038cdd40c7a975 later added
support for int. This commit adds support for qsizetype, which isn't int
on 64-bit platforms.
We do this by reorganizing the code and using the generic version of
__builtin_{add,sub,mul}_overflow from GCC 5 and Clang 3.8, which ICC 18
seems to support now too on Linux. That leaves older versions of GCC and
Clang, as well as MSVC, ICC on Windows, and the GHS compiler, to use the
generic implementations, as I've removed the assembly code those
versions of GCC and Clang on x86 are now uncommon.
Note: any older version of ICC probably breaks. We only support the
latest.
Change-Id: I9e2892cb6c374e93bcb7fffd14fc11bcd5f067a7
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>
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Remove code for older versions and streamline #ifdefs.
Task-number: QTBUG-51673
Change-Id: I211703189ff12f827d94914093369736b6e65d4a
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
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These errors resulted from clang parsing function
declarations for functions that were not meant to
be documented. Here they are hidden from clang
with #ifndef Q_CLANG_QDOC
Change-Id: I256b49830b63188bf0a685cb393d469f2f2ca315
Reviewed-by: Martin Smith <martin.smith@qt.io>
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Saves a mere 300byte of text.
Change-Id: Ibc87a395af83757e855477a57e48e1e190504757
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
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Conflicts:
configure.json
mkspecs/win32-icc/qmake.conf
Change-Id: Ibf40546b024d644c7d9ed490bee15b82597f4d3f
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MSVC < 1800 (older than 2013) is no longer supported, so we can simplify
the code. And the implementation for C never worked -- "if it's not C++,
let's use a namespace!"
Change-Id: Iaeecaffe26af4535b416fffd148c2c6788c43881
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
Reviewed-by: Erik Verbruggen <erik.verbruggen@qt.io>
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Change-Id: Ideca8283141484cb6da47c50333f5c96e416f082
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
Reviewed-by: Olivier Goffart (Woboq GmbH) <ogoffart@woboq.com>
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Commit c35fef9d3b8bb77a7f303e3cd62c86cd00e57f5b wasn't sufficient. The
problem is that there's a complex combination of libc headers (math.h),
C++ headers (cmath), which may be provided by three different sources on
Linux (glibc, gcc and ICC). On some combinations, the isnan macro leaks
from math.h or cmath and that's what the the commit above tried to fix.
On some other combinations, there's no macro but there's an ::isnan
function defined. When we do "using namespace std; return isnan(x);",
that causes a compilation error. This commit solves that by detecting
whether there is a macro defined.
error: more than one instance of overloaded function "isnan" matches the argument list
function "isnan(double)"
function "std::isnan(double)"
argument types are: (double)
Change-Id: Iaeecaffe26af4535b416fffd148bf71826541bdd
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
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Remove most type traits from qtypetraits.h, but keep the custom
implementation of is_signed/is_unsigned. This gets rid of
BSD-3 licensed code from Google in a public header (hugh!).
The custom implementations for is_signed/is_unsigned are kept
because the implementations in gcc's standard headers do not
work as we expect for enums - both is_signed and is_unsigned
always returns false there - see also
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=59027
[ChangeLog][QtCore][General] Qt now relies on type traits from
the C++ standard library.
Change-Id: I3f2188b46949f04ca4482a6ac9afd3482103f0e1
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
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Conflicts:
qmake/doc/src/qmake-manual.qdoc
src/corelib/global/qglobal.cpp
src/corelib/tools/qstring.cpp
src/network/socket/qabstractsocket.cpp
src/network/socket/qnativesocketengine_unix.cpp
src/plugins/platforms/eglfs/api/qeglfsglobal.h
Change-Id: Id5dfdbd30fa996f9b4b66a0b030b7d3b8c0ef288
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ICC supplies a math.h header that defines things like:
#define isnan( __x__ ) __IMFC99MACRO1ARG_ALL( __x__, isnan, __, f, __, , __, l)
So use the already-existing workaround for it.
Since Qt 5.7 requires C++11, we can remove the check for that.
Change-Id: I149e0540c00745fe8119fffd1463cc5caf341337
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
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The rule was:
- if the header included qglobal.h, turn that into qglobal_p.h
- otherwise, insert the #include after the "We mean it" warning
qglobal_p.h currently only includes qglobal.h.
Change-Id: Ib056b47dde3341ef9a52ffff13ef677e471674b7
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
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Remove QSysInfo::WV_CE_5/6 enumeration values, #ifdef sections for Q_OS_WINCE
and wince .pro file clauses in library, examples and tests.
Task-number: QTBUG-51673
Change-Id: Ib63463445f3a26e04d018b193e4655030002f5f9
Reviewed-by: Lars Knoll <lars.knoll@theqtcompany.com>
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This adds the functionality to build Qt with clang under Windows against
the Microsoft Visual Studio 2015 runtime.
In order to replicate this, a Clang 3.8 build with Visual Studio 2015
Update 1 is needed.
Adds compiler detection to Qt to distinguish correctly the clang compiler
and Windows with Visual Studio.
Clang has some built-in numeric functions, there is no need to use the
Microsoft versions, which also conflict here.
Task-number: QTBUG-50804
Change-Id: Ia4b267a298310ac7d73edf473b12792991249d8a
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@theqtcompany.com>
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@theqtcompany.com>
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From Qt 5.7 -> tools & applications are lisenced under GPL v3 with some
exceptions, see
http://blog.qt.io/blog/2016/01/13/new-agreement-with-the-kde-free-qt-foundation/
Updated license headers to use new GPL-EXCEPT header instead of LGPL21 one
(in those files which will be under GPL 3 with exceptions)
Change-Id: I42a473ddc97101492a60b9287d90979d9eb35ae1
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Lars Knoll <lars.knoll@theqtcompany.com>
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From Qt 5.7 -> LGPL v2.1 isn't an option anymore, see
http://blog.qt.io/blog/2016/01/13/new-agreement-with-the-kde-free-qt-foundation/
Updated license headers to use new LGPL header instead of LGPL21 one
(in those files which will be under LGPL v3)
Change-Id: I046ec3e47b1876cd7b4b0353a576b352e3a946d9
Reviewed-by: Lars Knoll <lars.knoll@theqtcompany.com>
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MSVC doesn't define float versions for _isnan/_isfinite, so the double
versions need to be used. This is already done in the surrounding
functions, but not in these two.
Change-Id: Ic183358dc1790279e18d00a08b7279e76c02af60
Reviewed-by: Oliver Wolff <oliver.wolff@theqtcompany.com>
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Conflicts:
src/corelib/kernel/qcoreapplication.cpp
src/corelib/kernel/qeventdispatcher_blackberry.cpp
src/network/bearer/qnetworkconfiguration.cpp
src/plugins/bearer/blackberry/qbbengine.cpp
src/plugins/platforms/android/androidjnimain.cpp
src/plugins/platforms/android/qandroidplatformtheme.cpp
src/plugins/platforms/qnx/qqnxbpseventfilter.cpp
src/plugins/platforms/qnx/qqnxfiledialoghelper_bb10.cpp
src/plugins/platforms/qnx/qqnxinputcontext_imf.cpp
src/plugins/platforms/qnx/qqnxintegration.cpp
src/plugins/platforms/qnx/qqnxnavigatorbps.cpp
src/plugins/platforms/qnx/qqnxvirtualkeyboardbps.cpp
src/plugins/platforms/qnx/qqnxwindow.cpp
src/widgets/kernel/qwidgetwindow.cpp
src/widgets/styles/qwindowsvistastyle.cpp
src/widgets/styles/qwindowsxpstyle.cpp
src/widgets/widgets/qtoolbararealayout.cpp
tests/auto/corelib/global/qflags/qflags.pro
tests/auto/corelib/itemmodels/qitemmodel/modelstotest.cpp
tests/auto/corelib/tools/qversionnumber/qversionnumber.pro
tests/auto/widgets/dialogs/qfilesystemmodel/tst_qfilesystemmodel.cpp
Change-Id: I37be88c6c185bb85404823353e027a0a6acdbce4
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Intrinsics headers are associated with compilers, not OS's. This
change fixes a broken MinGW build triggered by
29bc68cf169b8cf87d306a1c72e12eb9b6fbfce7.
Change-Id: Ib9e4ea3e25bf49d38a754a246b9433bc078bbb18
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
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In C++, signed overflow math is Undefined Behavior. However, many CPUs
do implement some way to check for overflow. Some compilers expose
intrinsics to use this functionality. If the no intrinsic is exposed,
overflow checking can be done by widening the result type and "manually"
checking for overflow. Or, for X86, by using inline assembly to use the
CPU features.
Used in QtQml.
Change-Id: I2ef2523ccaa98f6757a45e24862a2fa730a26bb0
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
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Qt already assumes a working IEEE-754 implementation, so we can rely
on a working std::numeric_limits<double>.
This patch also gets rid of three cases of type-punning with unions
(which is undefined behavior in C++).
Change-Id: Ic3747f49d55e372960abf2091c1d5752c1eccdff
Reviewed-by: Lars Knoll <lars.knoll@theqtcompany.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
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The previous implementations did not check the full mantissa. The result
was that certain NaN values were seen as +/-Infinity.
A nice benefit is that the generated code for this implementation is also
faster.
Task-number: QTBUG-47692
Change-Id: I1507ec579ccd9a2ab97da8cf83dabbc5d6e28597
Reviewed-by: Lars Knoll <lars.knoll@theqtcompany.com>
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And for compiler extensions. QT_HAS_BUILTIN and QT_HAS_ATTRIBUTE will
come in handy.
Change-Id: I255870833a024a36adf6ffff13ecf06624bfc1ef
Reviewed-by: Olivier Goffart (Woboq GmbH) <ogoffart@woboq.com>
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Most processors have carry flags which they set on addition overflow, so
it's a good idea to access them whenever possible. Most of them also
have widening multiply instructions that can be used to detect overflow
of the non-widening version.
Tested to compile on:
Architecture Compiler
x86 GCC 4.9, GCC 5*, Clang 3.6*, ICC 16 beta
x86-64 GCC 4.9, GCC 5*, Clang 3.6*, ICC 16 beta
x86-64 ILP32 GCC 4.9, GCC 5*, Clang 3.6*
IA-64 LP64 GCC 4.8
ARMv7-A GCC 4.9, Clang 3.6*
AArch64 Clang 3.6*
MIPS GCC 4.9, Clang 3.6*
MIPS64 GCC 4.9, Clang 3.6*
PowerPC GCC 4.9, Clang 3.6*
PowerPC 64 GCC 4.9, Clang 3.6*
SPARC Clang 3.6*
SPARCv9 Clang 3.6*
[*] supports the intrinsics
If the compiler does not offer a way to detect an overflow, we do it by
hand. For unsigned additions, that's easy, since the C++ language
specifies the behavior of the overflow. That's also the reason why this
code is implemented only for unsigned integers.
For the multiplication, if the compiler does not support widening
multiplications, we do it with a division instead. This is necessary for
GCC < 4.5 and compilers not compatible with GCC or MSVC.
Change-Id: I049a653beeb5454c9539ffff13e637de0f1338c1
Reviewed-by: Ulf Hermann <ulf.hermann@theqtcompany.com>
Reviewed-by: Alex Trotsenko <alex1973tr@gmail.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
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Qt copyrights are now in The Qt Company, so we could update the source
code headers accordingly. In the same go we should also fix the links to
point to qt.io.
Outdated header.LGPL removed (use header.LGPL21 instead)
Old header.LGPL3 renamed to header.LGPL3-COMM to match actual licensing
combination. New header.LGPL-COMM taken in the use file which were
using old header.LGPL3 (src/plugins/platforms/android/extract.cpp)
Added new header.LGPL3 containing Commercial + LGPLv3 + GPLv2 license
combination
Change-Id: I6f49b819a8a20cc4f88b794a8f6726d975e8ffbe
Reviewed-by: Matti Paaso <matti.paaso@theqtcompany.com>
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- Renamed LICENSE.LGPL to LICENSE.LGPLv21
- Added LICENSE.LGPLv3
- Removed LICENSE.GPL
Change-Id: Iec3406e3eb3f133be549092015cefe33d259a3f2
Reviewed-by: Iikka Eklund <iikka.eklund@digia.com>
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Change-Id: Ic804938fc352291d011800d21e549c10acac66fb
Reviewed-by: Lars Knoll <lars.knoll@digia.com>
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Change copyrights and license headers from Nokia to Digia
Change-Id: If1cc974286d29fd01ec6c19dd4719a67f4c3f00e
Reviewed-by: Lars Knoll <lars.knoll@digia.com>
Reviewed-by: Sergio Ahumada <sergio.ahumada@digia.com>
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Just like qMalloc/qRealloc/qFree, there is absolutely no reason to wrap these
functions just to avoid an include, except to pay for it with worse runtime
performance.
On OS X, on byte sizes from 50 up to 1000, calling memset directly is 28-15%
faster(!) than adding an additional call to qMemSet. The advantage on sizes
above that is unmeasurable.
For qMemCopy, the benefits are a little more modest: 16-7%.
Change-Id: I98aa92bb765aea0448e3f20af42a039b369af0b3
Reviewed-by: Giuseppe D'Angelo <dangelog@gmail.com>
Reviewed-by: John Brooks <john.brooks@dereferenced.net>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Lars Knoll <lars.knoll@nokia.com>
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Remove the -armfpa option the config.tests/unix/doubleformat*
detection. The places where we used QT_ARMFPA and Q_DOUBLE_FORMAT
has been removed as well.
Rationale: ARM FPA with GCC does not work with EABI. Qt currently
does not support compiling without EABI, making ARM FPA an
impossibility. It is unknown whether other compilers provide ARM FPA
support with EABI. Support for ARM FPA can be re-added in the future
should the need arise, but since ARM VFP is available for ARMv5 and up,
we should encourage implementors to instead use soft-floats or VFP.
Change-Id: I3671aba575118ae3e3e6d769759301c8f2f496f5
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@nokia.com>
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As in the past, to avoid rewriting various autotests that contain
line-number information, an extra blank line has been inserted at the
end of the license text to ensure that this commit does not change the
total number of lines in the license header.
Change-Id: I311e001373776812699d6efc045b5f742890c689
Reviewed-by: Rohan McGovern <rohan.mcgovern@nokia.com>
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Replace Nokia contact email address with Qt Project website.
Change-Id: I431bbbf76d7c27d8b502f87947675c116994c415
Reviewed-by: Rohan McGovern <rohan.mcgovern@nokia.com>
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Change-Id: I02f2c620296fcd91d4967d58767ea33fc4e1e7dc
Reviewed-by: Rohan McGovern <rohan.mcgovern@nokia.com>
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Updated version of LGPL and FDL licenseheaders.
Apply release phase licenseheaders for all source files.
Reviewed-by: Trust Me
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This is the beginning of revision history for this module. If you
want to look at revision history older than this, please refer to the
Qt Git wiki for how to use Git history grafting. At the time of
writing, this wiki is located here:
http://qt.gitorious.org/qt/pages/GitIntroductionWithQt
If you have already performed the grafting and you don't see any
history beyond this commit, try running "git log" with the "--follow"
argument.
Branched from the monolithic repo, Qt master branch, at commit
896db169ea224deb96c59ce8af800d019de63f12
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