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Added epsilon, dummy_precision, infinity and quiet_NaN NumTraits for fp16

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This commit is contained in:
Benoit Steiner 2016-04-11 11:03:56 -07:00
parent e939b087fe
commit 833efb39bf
1 changed files with 10 additions and 1 deletions
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11
Eigen/src/Core/arch/CUDA/Half.h
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@ -366,13 +366,22 @@ template<> struct is_arithmetic<half> { enum { value = true }; };
template<> struct NumTraits<Eigen::half> template<> struct NumTraits<Eigen::half>
: GenericNumTraits<Eigen::half> : GenericNumTraits<Eigen::half>
{ {
EIGEN_DEVICE_FUNC static EIGEN_STRONG_INLINE float dummy_precision() { return 1e-3f; } EIGEN_DEVICE_FUNC static EIGEN_STRONG_INLINE Eigen::half epsilon() {
return internal::raw_uint16_to_half(0x0800);
}
EIGEN_DEVICE_FUNC static EIGEN_STRONG_INLINE Eigen::half dummy_precision() { return half(1e-3f); }
EIGEN_DEVICE_FUNC static EIGEN_STRONG_INLINE Eigen::half highest() { EIGEN_DEVICE_FUNC static EIGEN_STRONG_INLINE Eigen::half highest() {
return internal::raw_uint16_to_half(0x7bff); return internal::raw_uint16_to_half(0x7bff);
} }
EIGEN_DEVICE_FUNC static EIGEN_STRONG_INLINE Eigen::half lowest() { EIGEN_DEVICE_FUNC static EIGEN_STRONG_INLINE Eigen::half lowest() {
return internal::raw_uint16_to_half(0xfbff); return internal::raw_uint16_to_half(0xfbff);
} }
EIGEN_DEVICE_FUNC static EIGEN_STRONG_INLINE Eigen::half infinity() {
return internal::raw_uint16_to_half(0x7c00);
}
EIGEN_DEVICE_FUNC static EIGEN_STRONG_INLINE Eigen::half quiet_NaN() {
return internal::raw_uint16_to_half(0x7c01);
}
}; };
// Infinity/NaN checks. // Infinity/NaN checks.