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943db9eb64
audit_log_user_avc_message instead of audit_log_avc. 2006-01-04 Joseph S. Myers <joseph@codesourcery.com> * sysdeps/ieee754/bits/nan.h: Fix typo.
54 lines
1.6 KiB
C
54 lines
1.6 KiB
C
/* `NAN' constant for IEEE 754 machines.
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Copyright (C) 1992,1996,1997,1999,2004,2006 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#ifndef _MATH_H
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# error "Never use <bits/nan.h> directly; include <math.h> instead."
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#endif
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/* IEEE Not A Number. */
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#if __GNUC_PREREQ(3,3)
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# define NAN (__builtin_nanf (""))
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#elif defined __GNUC__
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# define NAN \
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(__extension__ \
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((union { unsigned __l __attribute__ ((__mode__ (__SI__))); float __d; }) \
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{ __l: 0x7fc00000UL }).__d)
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#else
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# include <endian.h>
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# if __BYTE_ORDER == __BIG_ENDIAN
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# define __nan_bytes { 0x7f, 0xc0, 0, 0 }
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# endif
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# if __BYTE_ORDER == __LITTLE_ENDIAN
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# define __nan_bytes { 0, 0, 0xc0, 0x7f }
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# endif
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static union { unsigned char __c[4]; float __d; } __nan_union
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__attribute_used__ = { __nan_bytes };
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# define NAN (__nan_union.__d)
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#endif /* GCC. */
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