[PATCH 2/3] libm: Detect fast fmaf support
Keith Packard via Newlib <[email protected]>
| Newsgroups | gmane.comp.lib.newlib |
|---|---|
| Message-ID | <[email protected]> |
Anything with fast FMA is assumed to have fast FMAF, along with 32-bit arms that advertise 32-bit FP support and __ARM_FEATURE_FMA Signed-off-by: Keith Packard <[email protected]> --- newlib/libm/common/math_config.h | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/newlib/libm/common/math_config.h b/newlib/libm/common/math_config.h index df8f8d6e4..e7a8bb7fe 100644 --- a/newlib/libm/common/math_config.h +++ b/newlib/libm/common/math_config.h @@ -79,6 +79,14 @@ # endif #endif +#ifndef HAVE_FAST_FMAF +# if HAVE_FAST_FMA || (__ARM_FEATURE_FMA && (__ARM_FP & 4)) +# define HAVE_FAST_FMAF 1 +# else +# define HAVE_FAST_FMAF 0 +# endif +#endif + #if HAVE_FAST_ROUND /* When set, the roundtoint and converttoint functions are provided with the semantics documented below. */ -- 2.28.0