diff options
Diffstat (limited to 'sysdeps/ieee754/bits/nan.h')
| -rw-r--r-- | sysdeps/ieee754/bits/nan.h | 52 |
1 files changed, 0 insertions, 52 deletions
diff --git a/sysdeps/ieee754/bits/nan.h b/sysdeps/ieee754/bits/nan.h deleted file mode 100644 index b832724d6b..0000000000 --- a/sysdeps/ieee754/bits/nan.h +++ /dev/null @@ -1,52 +0,0 @@ -/* `NAN' constant for IEEE 754 machines. - Copyright (C) 1992-2016 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, see - <http://www.gnu.org/licenses/>. */ - -#ifndef _MATH_H -# error "Never use <bits/nan.h> directly; include <math.h> instead." -#endif - - -/* IEEE Not A Number. */ - -#if __GNUC_PREREQ(3,3) - -# define NAN (__builtin_nanf ("")) - -#elif defined __GNUC__ - -# define NAN \ - (__extension__ \ - ((union { unsigned __l __attribute__ ((__mode__ (__SI__))); float __d; }) \ - { __l: 0x7fc00000UL }).__d) - -#else - -# include <endian.h> - -# if __BYTE_ORDER == __BIG_ENDIAN -# define __qnan_bytes { 0x7f, 0xc0, 0, 0 } -# endif -# if __BYTE_ORDER == __LITTLE_ENDIAN -# define __qnan_bytes { 0, 0, 0xc0, 0x7f } -# endif - -static union { unsigned char __c[4]; float __d; } __qnan_union - __attribute__ ((__unused__)) = { __qnan_bytes }; -# define NAN (__qnan_union.__d) - -#endif /* GCC. */ |