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| author | Jan-Arve Sæther <jan-arve.saether@nokia.com> | 2009-10-28 06:53:39 (GMT) |
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| committer | Jan-Arve Sæther <jan-arve.saether@nokia.com> | 2009-10-28 06:53:39 (GMT) |
| commit | 262d0df3b166fecb3502e81b2ab85cadd71ae70f (patch) | |
| tree | 17f8cba9c8f1ff4f46b45386c79ff9ebb3f998be /src/3rdparty/webkit/JavaScriptCore/wtf/RandomNumber.cpp | |
| parent | df0001a3d62938c713b351c7e59228b803ec5670 (diff) | |
| parent | 1607216cc6292ef9a4af68ce6d29dc79fffea92c (diff) | |
| download | Qt-262d0df3b166fecb3502e81b2ab85cadd71ae70f.zip Qt-262d0df3b166fecb3502e81b2ab85cadd71ae70f.tar.gz Qt-262d0df3b166fecb3502e81b2ab85cadd71ae70f.tar.bz2 | |
Merge branch 'fixes' of git://gitorious.org/~fleury/qt/fleury-openbossa-clone into openbossa-fleury-fixes3
Conflicts:
src/gui/graphicsview/qgraphicsanchorlayout_p.cpp
src/gui/graphicsview/qgraphicsanchorlayout_p.h
Diffstat (limited to 'src/3rdparty/webkit/JavaScriptCore/wtf/RandomNumber.cpp')
| -rw-r--r-- | src/3rdparty/webkit/JavaScriptCore/wtf/RandomNumber.cpp | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/src/3rdparty/webkit/JavaScriptCore/wtf/RandomNumber.cpp b/src/3rdparty/webkit/JavaScriptCore/wtf/RandomNumber.cpp index 0e6e208..52fb130 100644 --- a/src/3rdparty/webkit/JavaScriptCore/wtf/RandomNumber.cpp +++ b/src/3rdparty/webkit/JavaScriptCore/wtf/RandomNumber.cpp @@ -82,6 +82,23 @@ double randomNumber() return static_cast<double>(fullRandom)/static_cast<double>(1LL << 53); #elif PLATFORM(WINCE) return genrand_res53(); +#elif PLATFORM(WIN_OS) + uint32_t part1 = rand() & (RAND_MAX - 1); + uint32_t part2 = rand() & (RAND_MAX - 1); + uint32_t part3 = rand() & (RAND_MAX - 1); + uint32_t part4 = rand() & (RAND_MAX - 1); + // rand only provides 15 bits on Win32 + uint64_t fullRandom = part1; + fullRandom <<= 15; + fullRandom |= part2; + fullRandom <<= 15; + fullRandom |= part3; + fullRandom <<= 15; + fullRandom |= part4; + + // Mask off the low 53bits + fullRandom &= (1LL << 53) - 1; + return static_cast<double>(fullRandom)/static_cast<double>(1LL << 53); #else uint32_t part1 = rand() & (RAND_MAX - 1); uint32_t part2 = rand() & (RAND_MAX - 1); |