ROCm/composable_kernel
1
0
Fork 0
mirror of https://github.com/ROCm/composable_kernel.git synced 2026-04-20 14:59:17 +00:00
Code Issues Packages Projects Releases Wiki Activity

modified half function in math_v2.hpp (#528)

Browse Source 
Co-authored-by: Chao Liu <chao.liu2@amd.com>
This commit is contained in:
guangzlu
2022-12-08 07:43:02 +08:00
committed by GitHub
parent d072790fe2
commit ce87b4f765
1 changed files with 16 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

18
include/ck/utility/math_v2.hpp
View File

@@ -114,7 +114,16 @@ static inline __device__ int4_t abs(int4_t x)
};
#endif
static inline __device__ half_t abs(half_t x) { return ::__habs(x); };
static inline __device__ half_t abs(half_t x)
{
uint16_t xx = ck::bit_cast<uint16_t>(x);
uint16_t abs_xx = xx & 0x7fff;
half_t abs_x = ck::bit_cast<half_t>(abs_xx);
return abs_x;
};
static inline __device__ bool isnan(float x) { return ::isnan(x); };
@@ -140,7 +149,12 @@ static inline __device__ bool isnan(int4_t x)
};
#endif
static inline __device__ bool isnan(half_t x) { return ::__hisnan(x); };
static inline __device__ bool isnan(half_t x)
{
uint16_t xx = ck::bit_cast<uint16_t>(x);
return (xx & 0x7FFF) > 0x7C00;
};
static inline __device__ float sqrt(float x) { return ::sqrtf(x); };