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authorMike Frysinger <vapier@gentoo.org>2006-08-24 00:15:09 +0000
committerMike Frysinger <vapier@gentoo.org>2006-08-24 00:15:09 +0000
commit64085a723ae341524e35b1b7cb13bfe0bd4794dc (patch)
treed4311a0b9460b08731a9c68110158e99787405a4 /libc/sysdeps/linux/common/bits/inf.h
parent7320e0ffac2dd65a911fd6bdc8f65c1467eede5e (diff)
sync with upstream via psm
Diffstat (limited to 'libc/sysdeps/linux/common/bits/inf.h')
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1 files changed, 30 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/common/bits/inf.h b/libc/sysdeps/linux/common/bits/inf.h
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+/* `INFINITY' constant for IEEE 754 machines.
+ Copyright (C) 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, write to the Free
+ Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ 02111-1307 USA. */
+
+#ifndef _MATH_H
+# error "Never use <bits/inf.h> directly; include <math.h> instead."
+#endif
+
+/* IEEE positive infinity. */
+
+#if __GNUC_PREREQ(3,3)
+# define INFINITY (__builtin_inff())
+#else
+# define INFINITY HUGE_VALF
+#endif