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-rw-r--r--bits/inf.h32
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diff --git a/bits/inf.h b/bits/inf.h
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--- a/bits/inf.h
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-/* Default `INFINITY' constant.
- Copyright (C) 2004-2016 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