diff options
Diffstat (limited to 'sysdeps/ieee754/bits/huge_val.h')
| -rw-r--r-- | sysdeps/ieee754/bits/huge_val.h | 22 |
1 files changed, 19 insertions, 3 deletions
diff --git a/sysdeps/ieee754/bits/huge_val.h b/sysdeps/ieee754/bits/huge_val.h index f49d65661a..f42cb662cc 100644 --- a/sysdeps/ieee754/bits/huge_val.h +++ b/sysdeps/ieee754/bits/huge_val.h @@ -1,6 +1,6 @@ /* `HUGE_VAL' constants for IEEE 754 machines (where it is infinity). Used by <stdlib.h> and <math.h> functions for overflow. - Copyright (C) 1992, 1995, 1996, 1997 Free Software Foundation, Inc. + Copyright (C) 1992, 1995, 1996, 1997, 1999 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -28,11 +28,19 @@ #ifdef __GNUC__ -# define HUGE_VAL \ +# if __GNUC_PREREQ(2,95) + +# define HUGE_VAL (0x1.0p2047) + +# else + +# define HUGE_VAL \ (__extension__ \ ((union { unsigned __l __attribute__((__mode__(__DI__))); double __d; }) \ { __l: 0x7ff0000000000000ULL }).__d) +# endif + #else /* not GCC */ # include <endian.h> @@ -58,11 +66,19 @@ static __huge_val_t __huge_val = { __HUGE_VAL_bytes }; # ifdef __GNUC__ -# define HUGE_VALF \ +# if __GNUC_PREREQ(2,95) + +# define HUGE_VALF (0x1.0p255f) + +# else + +# define HUGE_VALF \ (__extension__ \ ((union { unsigned __l __attribute__((__mode__(__SI__))); float __d; }) \ { __l: 0x7f800000UL }).__d) +# endif + # else /* not GCC */ typedef union { unsigned char __c[4]; float __f; } __huge_valf_t; |