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Fixed the integer division code on windows

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This commit is contained in:
Benoit Steiner 2016-03-09 07:06:36 -08:00
parent 6d30683113
commit b084133dbf
1 changed files with 7 additions and 1 deletions
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8
unsupported/Eigen/CXX11/src/Tensor/TensorIntDiv.h
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@ -36,7 +36,13 @@ namespace {
#ifdef __CUDA_ARCH__
return (sizeof(T) == 8) ? __clzll(val) : __clz(val);
#elif EIGEN_COMP_MSVC
return (sizeof(T) == 8) ? __lzcnt64(val) : __lzcnt(val);
unsigned long index;
if (sizeof(T) == 8) {
_BitScanReverse64(&index, val);
} else {
_BitScanReverse(&index, val);
}
return (sizeof(T) == 8) ? 63 - index : 31 - index;
#else
EIGEN_STATIC_ASSERT(sizeof(unsigned long long) == 8, YOU_MADE_A_PROGRAMMING_MISTAKE);
return (sizeof(T) == 8) ?