diff options
| author | Vineet Gupta <vgupta@synopsys.com> | 2020-05-29 15:58:33 -0700 |
|---|---|---|
| committer | Vineet Gupta <vgupta@synopsys.com> | 2020-06-03 10:23:28 -0700 |
| commit | 628d90c5f97b6f0f8b79a079b682febb1f486a38 (patch) | |
| tree | b62fc668b7ba6f44cfdd8e74617f563929c80506 /sysdeps/ieee754/dbl-64/s_fmaf.c | |
| parent | 3374868668e708581ca06e256f6122518c89a8ad (diff) | |
| download | glibc-628d90c5f97b6f0f8b79a079b682febb1f486a38.tar.gz glibc-628d90c5f97b6f0f8b79a079b682febb1f486a38.tar.xz glibc-628d90c5f97b6f0f8b79a079b682febb1f486a38.zip | |
ieee754: provide gcc builtins based generic fma functions
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Diffstat (limited to 'sysdeps/ieee754/dbl-64/s_fmaf.c')
| -rw-r--r-- | sysdeps/ieee754/dbl-64/s_fmaf.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/sysdeps/ieee754/dbl-64/s_fmaf.c b/sysdeps/ieee754/dbl-64/s_fmaf.c index 57329d0a87..93b8660d52 100644 --- a/sysdeps/ieee754/dbl-64/s_fmaf.c +++ b/sysdeps/ieee754/dbl-64/s_fmaf.c @@ -23,6 +23,7 @@ #include <math-barriers.h> #include <fenv_private.h> #include <libm-alias-float.h> +#include <math-use-builtins.h> /* This implementation relies on double being more than twice as precise as float and uses rounding to odd in order to avoid problems @@ -33,6 +34,10 @@ float __fmaf (float x, float y, float z) { +#if USE_FMAF_BUILTIN + return __builtin_fmaf (x, y, z); +#else + /* Use generic implementation. */ fenv_t env; /* Multiplication is always exact. */ @@ -60,6 +65,7 @@ __fmaf (float x, float y, float z) /* And finally truncation with round to nearest. */ return (float) u.d; +#endif /* ! USE_FMAF_BUILTIN */ } #ifndef __fmaf libm_alias_float (__fma, fma) |