/* Copyright (C) 1991, 1992 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 Library General Public License as
-published by the Free Software Foundation; either version 2 of the
-License, or (at your option) any later version.
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2, 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
-Library General Public License for more details.
+ This program 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 General Public License for more details.
-You should have received a copy of the GNU Library General Public
-License along with the GNU C Library; see the file COPYING.LIB. If
-not, write to the Free Software Foundation, Inc., 675 Mass Ave,
-Cambridge, MA 02139, USA. */
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
#include <errno.h>
+#ifndef errno
+extern int errno;
+#endif
+
#include <ctype.h>
#include <math.h>
-#if STDC_HEADERS
+#ifdef HAVE_FLOAT_H
#include <float.h>
-#include <stdlib.h>
-#include <string.h>
#else
-#define NULL 0
#define DBL_MAX 1.7976931348623159e+308
#define DBL_MIN 2.2250738585072010e-308
-extern int errno;
#endif
+
+#if STDC_HEADERS
+#include <stdlib.h>
+#include <string.h>
+#else
+#define NULL 0
#ifndef HUGE_VAL
#define HUGE_VAL HUGE
#endif
-
-#if !__STDC__
-#define const
#endif
/* Convert NPTR to a double. If ENDPTR is not NULL, a pointer to the