diff options
| author | Martynas Venckus <martynas@cvs.openbsd.org> | 2010-12-14 11:16:16 +0000 |
|---|---|---|
| committer | Martynas Venckus <martynas@cvs.openbsd.org> | 2010-12-14 11:16:16 +0000 |
| commit | 7435b3779589be6d0dad67fd1842b6efec367719 (patch) | |
| tree | 85fb86f3b8a67cbad40dc87f19639d7ea4a06379 /include | |
| parent | b8dd9dd528434b0ffadaca571f1b36e4b1b34e23 (diff) | |
- make HUGE_VAL, HUGE_VALF, HUGE_VALL, INFINITY, NAN expand to the
constant expressions with the help of gcc post-3.3.
ok millert@, mikeb@. been in snaps for weeks.
Diffstat (limited to 'include')
| -rw-r--r-- | include/math.h | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/include/math.h b/include/math.h index 2d9d4333110..c03e466c0dd 100644 --- a/include/math.h +++ b/include/math.h @@ -1,4 +1,4 @@ -/* $OpenBSD: math.h,v 1.26 2009/07/25 11:38:09 martynas Exp $ */ +/* $OpenBSD: math.h,v 1.27 2010/12/14 11:16:15 martynas Exp $ */ /* * ==================================================== * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved. @@ -25,7 +25,11 @@ * ANSI/POSIX */ extern char __infinity[]; +#if __GNUC_PREREQ__(3, 3) +#define HUGE_VAL __builtin_huge_val() +#else /* __GNUC_PREREQ__(3, 3) */ #define HUGE_VAL (*(double *)(void *)__infinity) +#endif /* __GNUC_PREREQ__(3, 3) */ /* * C99 @@ -34,6 +38,12 @@ extern char __infinity[]; typedef __double_t double_t; typedef __float_t float_t; +#if __GNUC_PREREQ__(3, 3) +#define HUGE_VALF __builtin_huge_valf() +#define HUGE_VALL __builtin_huge_vall() +#define INFINITY __builtin_inff() +#define NAN __builtin_nanf("") +#else /* __GNUC_PREREQ__(3, 3) */ #ifdef __vax__ extern char __infinityf[]; #define HUGE_VALF (*(float *)(void *)__infinityf) @@ -46,6 +56,7 @@ extern char __infinityf[]; extern char __nan[]; #define NAN (*(float *)(void *)__nan) #endif /* !__vax__ */ +#endif /* __GNUC_PREREQ__(3, 3) */ #define FP_INFINITE 0x01 #define FP_NAN 0x02 |