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| author | Jan Vesely <jan.vesely@rutgers.edu> | 2018-05-03 05:44:22 +0000 |
|---|---|---|
| committer | Jan Vesely <jan.vesely@rutgers.edu> | 2018-05-03 05:44:22 +0000 |
| commit | 6146eda75dbf8e734b02d02a7c4a62804e04293f (patch) | |
| tree | f926f72035dc16c32457c11eddf2ddd2403d2d5f /libclc | |
| parent | 8ef2abdbc4018e898b097df3a9b0aad0fc1a185d (diff) | |
math: Add helper function to flush denormals if not supported.
Signed-off-by: Jan Vesely <jan.vesely@rutgers.edu>
Reviewer: Aaron Watry <awatry@gmail.com>
llvm-svn: 331433
Diffstat (limited to 'libclc')
| -rw-r--r-- | libclc/generic/lib/math/math.h | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/libclc/generic/lib/math/math.h b/libclc/generic/lib/math/math.h index 91d116e95d6f..c931d19a380c 100644 --- a/libclc/generic/lib/math/math.h +++ b/libclc/generic/lib/math/math.h @@ -20,6 +20,13 @@ * THE SOFTWARE. */ +#ifndef __CLC_MATH_H_ +#define __CLC_MATH_H_ + +#include "clc/clcfunc.h" +#include "clc/as_type.h" +#include "config.h" + #define SNAN 0x001 #define QNAN 0x002 #define NINF 0x004 @@ -66,6 +73,17 @@ #define MANTLENGTH_SP32 24 #define BASEDIGITS_SP32 7 +_CLC_OVERLOAD _CLC_INLINE float __clc_flush_denormal_if_not_supported(float x) +{ + int ix = as_int(x); + if (!__clc_fp32_subnormals_supported() && + ((ix & EXPBITS_SP32) == 0) && ((ix & MANTBITS_SP32) != 0)) { + ix &= SIGNBIT_SP32; + x = as_float(ix); + } + return x; +} + #ifdef cl_khr_fp64 #define SIGNBIT_DP64 0x8000000000000000L @@ -93,3 +111,4 @@ #endif // cl_khr_fp64 #define ALIGNED(x) __attribute__((aligned(x))) +#endif // __CLC_MATH_H_ |