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+/* Default `HUGE_VALL' constant.
+ Used by <stdlib.h> and <math.h> functions for overflow.
+ Copyright (C) 1992, 1996, 1997, 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/huge_vall.h> directly; include <math.h> instead."
+#endif
+
+#if __GNUC_PREREQ(3,3)
+# define HUGE_VALL (__builtin_huge_vall())
+#else
+# define HUGE_VALL ((long double) HUGE_VAL)
+#endif