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| author | Jan Vesely <jan.vesely@rutgers.edu> | 2017-11-13 18:28:45 +0000 |
|---|---|---|
| committer | Jan Vesely <jan.vesely@rutgers.edu> | 2017-11-13 18:28:45 +0000 |
| commit | 79b7566210fde40f70bdf4b2e8f914ca0680657c (patch) | |
| tree | 81f88ce569d0aed213c29dba90642fafa6b8443b /libclc | |
| parent | 0a7d0230fcf7d0fa0f90dd9800b9106fd216c93a (diff) | |
| download | bcm5719-llvm-79b7566210fde40f70bdf4b2e8f914ca0680657c.tar.gz bcm5719-llvm-79b7566210fde40f70bdf4b2e8f914ca0680657c.zip | |
math: Use precomputed constant for log2(10.0)
exp10 CTS fails with or without this change
Reviewer: Jeroen Ketema
Signed-off-by: Jan Vesely <jan.vesely@rutgers.edu>
llvm-svn: 318063
Diffstat (limited to 'libclc')
| -rw-r--r-- | libclc/generic/include/clc/float/definitions.h | 8 | ||||
| -rw-r--r-- | libclc/generic/lib/math/exp10.inc | 4 | ||||
| -rw-r--r-- | libclc/generic/lib/math/native_exp10.inc | 2 |
3 files changed, 11 insertions, 3 deletions
diff --git a/libclc/generic/include/clc/float/definitions.h b/libclc/generic/include/clc/float/definitions.h index 6010ed2c015..84a102e58e7 100644 --- a/libclc/generic/include/clc/float/definitions.h +++ b/libclc/generic/include/clc/float/definitions.h @@ -31,6 +31,10 @@ #define M_SQRT2_F 0x1.6a09e6p+0f #define M_SQRT1_2_F 0x1.6a09e6p-1f +#ifdef __CLC_INTERNAL +#define M_LOG210_F 0x1.a934f0p+1f +#endif + #ifdef cl_khr_fp64 #define HUGE_VAL __builtin_huge_val() @@ -59,6 +63,10 @@ #define M_SQRT2 0x1.6a09e667f3bcdp+0 #define M_SQRT1_2 0x1.6a09e667f3bcdp-1 +#ifdef __CLC_INTERNAL +#define M_LOG210 0x1.a934f0979a371p+1 +#endif + #endif #ifdef cl_khr_fp16 diff --git a/libclc/generic/lib/math/exp10.inc b/libclc/generic/lib/math/exp10.inc index a592c194879..f5482e4e56e 100644 --- a/libclc/generic/lib/math/exp10.inc +++ b/libclc/generic/lib/math/exp10.inc @@ -1,9 +1,9 @@ _CLC_OVERLOAD _CLC_DEF __CLC_GENTYPE exp10(__CLC_GENTYPE val) { // exp10(x) = exp2(x * log2(10)) #if __CLC_FPSIZE == 32 - return exp2(val * log2(10.0f)); + return exp2(val * M_LOG210_F); #elif __CLC_FPSIZE == 64 - return exp2(val * log2(10.0)); + return exp2(val * M_LOG210); #else #error unknown _CLC_FPSIZE #endif diff --git a/libclc/generic/lib/math/native_exp10.inc b/libclc/generic/lib/math/native_exp10.inc index b82a650070e..9826b4e2d30 100644 --- a/libclc/generic/lib/math/native_exp10.inc +++ b/libclc/generic/lib/math/native_exp10.inc @@ -1,3 +1,3 @@ _CLC_OVERLOAD _CLC_DEF __CLC_GENTYPE native_exp10(__CLC_GENTYPE val) { - return native_exp2(val * native_log2(10)); + return native_exp2(val * M_LOG210_F); } |
