From e03994a376b156bd0a7eeb3b00125ce92c4d2c1e Mon Sep 17 00:00:00 2001 From: "Peter S. Mazinger" Date: Mon, 14 Mar 2011 12:57:18 +0100 Subject: huge_vall.h: add for i386,ia64,m68k,sparc relevant only for gcc < 3.3 or non-gcc compiler Signed-off-by: Peter S. Mazinger Signed-off-by: Bernhard Reutner-Fischer --- libc/sysdeps/linux/sparc/bits/huge_vall.h | 49 +++++++++++++++++++++++++++++++ 1 file changed, 49 insertions(+) create mode 100644 libc/sysdeps/linux/sparc/bits/huge_vall.h (limited to 'libc/sysdeps/linux/sparc/bits') diff --git a/libc/sysdeps/linux/sparc/bits/huge_vall.h b/libc/sysdeps/linux/sparc/bits/huge_vall.h new file mode 100644 index 000000000..e4e2749a1 --- /dev/null +++ b/libc/sysdeps/linux/sparc/bits/huge_vall.h @@ -0,0 +1,49 @@ +/* `HUGE_VALL' constant for IEEE 754 machines (where it is infinity). + Used by and functions for overflow. + Copyright (C) 1992, 1995, 1996, 1997, 1999, 2000, 2004 + 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 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 + Lesser General Public License for more details. + + 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 directly; include instead." +#endif + +#if __GNUC_PREREQ(3,3) +# define HUGE_VALL (__builtin_huge_vall()) +#else +# include +# if __WORDSIZE == 32 +# define HUGE_VALL ((long double) HUGE_VAL) +# elif __GNUC_PREREQ(2,96) +# define HUGE_VALL (__extension__ 0x1.0p32767L) +# elif defined __GNUC__ + +# define HUGE_VALL \ + (__extension__ \ + ((union { struct { unsigned long __h, __l; } __i; long double __d; }) \ + { __i: { __h: 0x7fff000000000000UL, __l: 0 } }).__d) + +# else /* not GCC */ + +typedef union { unsigned char __c[16]; long double __d; } __huge_vall_t; +# define __HUGE_VALL_bytes { 0x7f, 0xff, 0,0,0,0,0,0,0,0,0,0,0,0,0,0 } +static __huge_vall_t __huge_vall = { __HUGE_VALL_bytes }; +# define HUGE_VALL (__huge_vall.__d) + +# endif /* GCC. */ +#endif /* GCC 3.3. */ -- cgit v1.2.3