diff options
Diffstat (limited to 'libc/sysdeps/linux/sh/bits/huge_val.h')
| -rw-r--r-- | libc/sysdeps/linux/sh/bits/huge_val.h | 45 |
1 files changed, 31 insertions, 14 deletions
diff --git a/libc/sysdeps/linux/sh/bits/huge_val.h b/libc/sysdeps/linux/sh/bits/huge_val.h index adbbbec8c..78d316dde 100644 --- a/libc/sysdeps/linux/sh/bits/huge_val.h +++ b/libc/sysdeps/linux/sh/bits/huge_val.h @@ -1,23 +1,24 @@ /* `HUGE_VAL' constants for IEEE 754 machines (where it is infinity). Used by <stdlib.h> and <math.h> functions for overflow. SH version. - Copyright (C) 1992, 95, 96, 97, 98, 99, 2000 Free Software Foundation, Inc. + Copyright (C) 1992, 1995, 1996, 1997, 1998, 1999, 2000 + 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 - modify it under the terms of the GNU Library General Public License as - published by the Free Software Foundation; either version 2 of the - License, or (at your option) any later version. + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. The GNU C Library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - Library General Public License for more details. + Lesser General Public License for more details. - You should have received a copy of the GNU Library General Public - License along with the GNU C Library; see the file COPYING.LIB. If not, - write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, - Boston, MA 02111-1307, USA. */ + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ #ifndef _MATH_H # error "Never use <bits/huge_val.h> directly; include <math.h> instead." @@ -29,11 +30,19 @@ #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: 0x000000007ff00000ULL }).__d) +# endif + #else /* not GCC */ # include <endian.h> @@ -53,17 +62,25 @@ static __huge_val_t __huge_val = { __HUGE_VAL_bytes }; #endif /* GCC. */ -/* ISO C 9X extensions: (float) HUGE_VALF and (long double) HUGE_VALL. */ +/* ISO C99 extensions: (float) HUGE_VALF and (long double) HUGE_VALL. */ -#ifdef __USE_ISOC9X +#ifdef __USE_ISOC99 # 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; @@ -85,4 +102,4 @@ static __huge_valf_t __huge_valf = { __HUGE_VALF_bytes }; same as `double'. */ # define HUGE_VALL HUGE_VAL -#endif /* __USE_ISOC9X. */ +#endif /* __USE_ISOC99. */ |