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author | 2016-04-27 12:57:21 -0700 | |
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committer | 2016-04-27 12:57:21 -0700 | |
commit | 25141b69d4dfe844d57e58d216649f6607cab713 (patch) | |
tree | c75231859b01aa4c8837a9c2faf276f1d98342b0 /Eigen | |
parent | 6744d776ba4c799d4d63d03c5305cba112b6de14 (diff) |
Improved support for min and max on 16 bit floats when running on recent cuda gpus
Diffstat (limited to 'Eigen')
-rw-r--r-- | Eigen/src/Core/arch/CUDA/Half.h | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/Eigen/src/Core/arch/CUDA/Half.h b/Eigen/src/Core/arch/CUDA/Half.h index 319074e4a..37e714411 100644 --- a/Eigen/src/Core/arch/CUDA/Half.h +++ b/Eigen/src/Core/arch/CUDA/Half.h @@ -465,6 +465,25 @@ template<> EIGEN_STRONG_INLINE EIGEN_DEVICE_FUNC Eigen::half ceil(const Eigen::h return Eigen::half(::ceilf(float(a))); } +template <> EIGEN_STRONG_INLINE EIGEN_DEVICE_FUNC Eigen::half mini(const Eigen::half& a, const Eigen::half& b) { +#if defined(EIGEN_HAS_CUDA_FP16) && defined(__CUDA_ARCH__) && __CUDA_ARCH__ >= 530 + return __hlt(b, a) ? b : a; +#else + const float f1 = static_cast<float>(a); + const float f2 = static_cast<float>(b); + return f2 < f1 ? b : a; +#endif +} +template <> EIGEN_STRONG_INLINE EIGEN_DEVICE_FUNC Eigen::half maxi(const Eigen::half& a, const Eigen::half& b) { +#if defined(EIGEN_HAS_CUDA_FP16) && defined(__CUDA_ARCH__) && __CUDA_ARCH__ >= 530 + return __hlt(a, b) ? b : a; +#else + const float f1 = static_cast<float>(a); + const float f2 = static_cast<float>(b); + return f1 < f2 ? b : a; +#endif +} + #ifdef EIGEN_HAS_C99_MATH template<> EIGEN_STRONG_INLINE EIGEN_DEVICE_FUNC Eigen::half lgamma(const Eigen::half& a) { return Eigen::half(Eigen::numext::lgamma(static_cast<float>(a))); |