diff options
| author | Martynas Venckus <martynas@cvs.openbsd.org> | 2015-07-19 17:41:50 +0000 |
|---|---|---|
| committer | Martynas Venckus <martynas@cvs.openbsd.org> | 2015-07-19 17:41:50 +0000 |
| commit | 29742bc144a31815cf8af6b82807bd146e1f607f (patch) | |
| tree | 89a52fb17a04b837ea339a436f3294e4df69bc18 | |
| parent | 79ce53f5422c7e39f8f500a10144fcf8aa7d8e20 (diff) | |
Define new C99 macros:
- MATH_ERRNO, MATH_ERREXCEPTION and math_errhandling
- Optional FP_FAST_FMA{,F,L} macros if fma() executes as fast or faster
than (x * y) + z; which in practice is achievable if gcc implements
__FP_FAST_FMA{,F,L}
Reported by John Marino @ DragonFlyBSD.
| -rw-r--r-- | include/math.h | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/include/math.h b/include/math.h index 02e1417ab7e..b13ad5b5bd9 100644 --- a/include/math.h +++ b/include/math.h @@ -1,4 +1,4 @@ -/* $OpenBSD: math.h,v 1.33 2014/05/03 16:13:03 martynas Exp $ */ +/* $OpenBSD: math.h,v 1.34 2015/07/19 17:41:49 martynas Exp $ */ /* * ==================================================== * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved. @@ -67,6 +67,22 @@ extern char __nan[]; #define FP_ILOGB0 (-INT_MAX) #define FP_ILOGBNAN INT_MAX +#ifdef __FP_FAST_FMA +#define FP_FAST_FMA 1 +#endif /* __FP_FAST_FMA */ + +#ifdef __FP_FAST_FMAF +#define FP_FAST_FMAF 1 +#endif /* __FP_FAST_FMAF */ + +#ifdef __FP_FAST_FMAL +#define FP_FAST_FMAL 1 +#endif /* __FP_FAST_FMAL */ + +#define MATH_ERRNO 1 +#define MATH_ERREXCEPT 2 +#define math_errhandling MATH_ERREXCEPT + #define fpclassify(x) \ ((sizeof (x) == sizeof (float)) ? \ __fpclassifyf(x) \ |