diff options
author | Joseph Myers <joseph@codesourcery.com> | 2012-07-01 13:08:59 +0000 |
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committer | Joseph Myers <joseph@codesourcery.com> | 2012-07-01 13:08:59 +0000 |
commit | e84eabb3871c9b39e59323bf3f6b98c2ca9d1cd0 (patch) | |
tree | dff3f1b79454b518d15a7b9bbedeb57ff156bbe8 /ports/sysdeps/ia64/bits/huge_vall.h | |
parent | 75f0d3040a2c2de8842bfa7a09e11da1a73e17d0 (diff) | |
parent | e64ac02c24b43659048622714afdc92fedf561fa (diff) |
Merge glibc-ports into ports/ directory.glibc-2.16-ports-merge
Diffstat (limited to 'ports/sysdeps/ia64/bits/huge_vall.h')
-rw-r--r-- | ports/sysdeps/ia64/bits/huge_vall.h | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/ports/sysdeps/ia64/bits/huge_vall.h b/ports/sysdeps/ia64/bits/huge_vall.h new file mode 100644 index 0000000000..a043f88b00 --- /dev/null +++ b/ports/sysdeps/ia64/bits/huge_vall.h @@ -0,0 +1,41 @@ +/* `HUGE_VALL' constant for ia64 (where it is infinity). + Used by <stdlib.h> and <math.h> functions for overflow. + Copyright (C) 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, see + <http://www.gnu.org/licenses/>. */ + +#ifndef _MATH_H +# error "Never use <bits/huge_vall.h> directly; include <math.h> instead." +#endif + +#if __GNUC_PREREQ(3,3) +# define HUGE_VALL (__builtin_huge_vall()) +#elif __GNUC_PREREQ(2,96) +# define HUGE_VALL (__extension__ 0x1.0p32767L) +#else + +# define __HUGE_VALL_bytes { 0,0,0,0,0,0,0, 0x80, 0xff, 0x7f, 0,0,0,0,0,0} + +# define __huge_vall_t union { unsigned char __c[16]; long double __ld; } +# ifdef __GNUC__ +# define HUGE_VALL (__extension__ \ + ((__huge_vall_t) { __c: __HUGE_VALL_bytes }).__ld) +# else /* Not GCC. */ +static __huge_vall_t __huge_vall = { __HUGE_VALL_bytes }; +# define HUGE_VALL (__huge_vall.__ld) +# endif /* GCC. */ + +#endif /* GCC 2.95 */ |