Magic-Mirror/gecko-dev
1
0
Fork 0
mirror of https://github.com/mozilla/gecko-dev.git synced 2024-10-30 13:45:27 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

Bug 1076670 - Workaround VS2013 64-bit returning +0 instead of -0 for sin(-0). r=luke

Browse Source
This commit is contained in:
Jan de Mooij 2014-10-09 13:11:03 +02:00
parent abd8b40060
commit 286458677e
1 changed files with 7 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
js/src/jsmath.cpp
View File

@ -878,12 +878,18 @@ js::math_round(JSContext *cx, unsigned argc, Value *vp)
double
js::math_sin_impl(MathCache *cache, double x)
{
return cache->lookup(sin, x, MathCache::Sin);
return cache->lookup(math_sin_uncached, x, MathCache::Sin);
}
double
js::math_sin_uncached(double x)
{
#ifdef _WIN64
// Workaround MSVC bug where sin(-0) is +0 instead of -0 on x64 on
// CPUs without FMA3 (pre-Haswell). See bug 1076670.
if (IsNegativeZero(x))
return -0.0;
#endif
return sin(x);
}