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bug #1590: fix collision with some system headers defining the macro FP32

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This commit is contained in:
Gael Guennebaud 2018-08-28 13:21:28 +02:00
parent 42f3ee4fb8
commit befaf83f5f
1 changed files with 7 additions and 7 deletions
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14
Eigen/src/Core/arch/GPU/Half.h
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@ -399,7 +399,7 @@ EIGEN_STRONG_INLINE EIGEN_DEVICE_FUNC __half_raw raw_uint16_to_half(unsigned sho
return h; return h;
} }
union FP32 { union float32_bits {
unsigned int u; unsigned int u;
float f; float f;
}; };
@ -416,11 +416,11 @@ EIGEN_STRONG_INLINE EIGEN_DEVICE_FUNC __half_raw float_to_half_rtne(float ff) {
return h; return h;
#else #else
FP32 f; f.f = ff; float32_bits f; f.f = ff;
const FP32 f32infty = { 255 << 23 }; const float32_bits f32infty = { 255 << 23 };
const FP32 f16max = { (127 + 16) << 23 }; const float32_bits f16max = { (127 + 16) << 23 };
const FP32 denorm_magic = { ((127 - 15) + (23 - 10) + 1) << 23 }; const float32_bits denorm_magic = { ((127 - 15) + (23 - 10) + 1) << 23 };
unsigned int sign_mask = 0x80000000u; unsigned int sign_mask = 0x80000000u;
__half_raw o; __half_raw o;
o.x = static_cast<unsigned short>(0x0u); o.x = static_cast<unsigned short>(0x0u);
@ -470,9 +470,9 @@ EIGEN_STRONG_INLINE EIGEN_DEVICE_FUNC float half_to_float(__half_raw h) {
return _cvtsh_ss(h.x); return _cvtsh_ss(h.x);
#else #else
const FP32 magic = { 113 << 23 }; const float32_bits magic = { 113 << 23 };
const unsigned int shifted_exp = 0x7c00 << 13; // exponent mask after shift const unsigned int shifted_exp = 0x7c00 << 13; // exponent mask after shift
FP32 o; float32_bits o;
o.u = (h.x & 0x7fff) << 13; // exponent/mantissa bits o.u = (h.x & 0x7fff) << 13; // exponent/mantissa bits
unsigned int exp = shifted_exp & o.u; // just the exponent unsigned int exp = shifted_exp & o.u; // just the exponent