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author | root <root@lamia.panaceas.james.local> | 2015-12-19 13:13:57 +0000 |
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committer | root <root@lamia.panaceas.james.local> | 2015-12-19 14:18:03 +0000 |
commit | 1a2238d1bddc823df06f67312d96ccf9de2893cc (patch) | |
tree | c58a3944d674a667f133ea5a730f5037e57d3d2e /uclibc-crosstools-gcc-4.4.2-1/usr/include/bits/nan.h | |
download | bootloader-1a2238d1bddc823df06f67312d96ccf9de2893cc.tar.gz bootloader-1a2238d1bddc823df06f67312d96ccf9de2893cc.tar.bz2 bootloader-1a2238d1bddc823df06f67312d96ccf9de2893cc.zip |
CFE from danitool [without hostTools dir]: https://mega.nz/#!mwZyFK7a!CPT3BKC8dEw29kubtdYxhB91G9vIIismTkgzQ3iUy3k
Diffstat (limited to 'uclibc-crosstools-gcc-4.4.2-1/usr/include/bits/nan.h')
-rw-r--r-- | uclibc-crosstools-gcc-4.4.2-1/usr/include/bits/nan.h | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/uclibc-crosstools-gcc-4.4.2-1/usr/include/bits/nan.h b/uclibc-crosstools-gcc-4.4.2-1/usr/include/bits/nan.h new file mode 100644 index 0000000..bae97f2 --- /dev/null +++ b/uclibc-crosstools-gcc-4.4.2-1/usr/include/bits/nan.h @@ -0,0 +1,53 @@ +/* `NAN' constant for IEEE 754 machines. + Copyright (C) 1992,1996,1997,1999,2004,2006 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 <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 __nan_bytes { 0x7f, 0xc0, 0, 0 } +# endif +# if __BYTE_ORDER == __LITTLE_ENDIAN +# define __nan_bytes { 0, 0, 0xc0, 0x7f } +# endif + +static union { unsigned char __c[4]; float __d; } __nan_union + __attribute_used__ = { __nan_bytes }; +# define NAN (__nan_union.__d) + +#endif /* GCC. */ |