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2004-04-21 Jakub Jelinek <jakub@redhat.com> * posix/tst-chmod.c (do_test): Fix a typo. * elf/lateglobal.c (main): Fix error checks. Patch by Stephen Clarke <stephen.clarke@st.com>. * manual/ctype.texi (isblank, iswblank): Mark as ISO functions, mention they have been added in ISO C99. Reported by Ben Pfaff <blp@cs.stanford.edu>. 2004-03-31 H.J. Lu <hongjiu.lu@intel.com> * sysdeps/ieee754/ldbl-128/bits/huge_vall.h: Fix typo.
52 lines
1.8 KiB
C
52 lines
1.8 KiB
C
/* `HUGE_VALL' constant for IEEE 754 machines (where it is infinity).
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Used by <stdlib.h> and <math.h> functions for overflow.
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Copyright (C) 1992, 1995, 1996, 1997, 1999, 2000, 2004
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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/huge_vall.h> directly; include <math.h> instead."
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#endif
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/* IEEE positive infinity (-HUGE_VAL is negative infinity). */
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#if __GNUC_PREREQ(3,3)
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# define HUGE_VALL (__builtin_huge_vall())
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#elif __GNUC_PREREQ(2,96)
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# define HUGE_VALL (__extension__ 0x1.0p32767L)
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#else
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# include <endian.h>
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typedef union { unsigned char __c[16]; long double __ld; } __huge_vall_t;
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# if __BYTE_ORDER == __BIG_ENDIAN
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# define __HUGE_VALL_bytes { 0x7f, 0xff, 0,0,0,0,0,0,0,0,0,0,0,0,0,0 }
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# endif
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# if __BYTE_ORDER == __LITTLE_ENDIAN
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# define __HUGE_VALL_bytes { 0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0xff, 0x7f }
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# endif
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# ifdef __GNUC__
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# define HUGE_VALL (__extension__ \
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((__huge_vall_t) { __c : __HUGE_VALL_bytes }).__ld)
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# else
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static __huge_vall_t __huge_vall = { __HUGE_VALL_bytes };
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# define HUGE_VALL (__huge_vall.__ld)
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# endif
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#endif
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