mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-22 21:10:07 +00:00
33 lines
1.3 KiB
C
33 lines
1.3 KiB
C
/* Default `INFINITY' constant.
|
|
Copyright (C) 2004-2014 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/inf.h> directly; include <math.h> instead."
|
|
#endif
|
|
|
|
/* If we don't have real infinity, then we're supposed to produce a float
|
|
value that overflows at translation time, which is required to produce
|
|
a diagnostic. GCC's __builtin_inff produces a quite nice diagnostic
|
|
that tells the user that the target doesn't support infinities. */
|
|
|
|
#if __GNUC_PREREQ(3,3)
|
|
# define INFINITY (__builtin_inff())
|
|
#else
|
|
# define INFINITY (1e9999f)
|
|
#endif
|