/* Copyright (C) 1991, 1992 Free Software Foundation, Inc.
-NOTE: The canonical source of this file is maintained with the GNU C Library.
-Bugs can be reported to bug-glibc@prep.ai.mit.edu.
+ 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.
-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.
+ 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.
-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 General Public License
+ along with this program; if not, write to the Free Software Foundation,
+ Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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, 675 Mass Ave, Cambridge, MA 02139, USA. */
+#if HAVE_CONFIG_H
+# include <config.h>
+#endif
-#include <ansidecl.h>
-#include <localeinfo.h>
#include <errno.h>
-#include <float.h>
+#ifndef errno
+extern int errno;
+#endif
+
#include <ctype.h>
-#include <stdlib.h>
-#include <string.h>
#include <math.h>
+#if HAVE_FLOAT_H
+# include <float.h>
+#else
+# define DBL_MAX 1.7976931348623159e+308
+# define DBL_MIN 2.2250738585072010e-308
+#endif
+
+#if STDC_HEADERS
+# include <stdlib.h>
+# include <string.h>
+#else
+# define NULL 0
+# ifndef HUGE_VAL
+# define HUGE_VAL HUGE
+# endif
+#endif
/* Convert NPTR to a double. If ENDPTR is not NULL, a pointer to the
character after the last one used in the number is put in *ENDPTR. */
double
-DEFUN(strtod, (nptr, endptr), CONST char *nptr AND char **endptr)
+strtod (nptr, endptr)
+ const char *nptr;
+ char **endptr;
{
- register CONST char *s;
+ register const char *s;
short int sign;
- wchar_t decimal; /* Decimal point character. */
/* The number so far. */
double num;
- int got_dot; /* Found a decimal point. */
- int got_digit; /* Seen any digits. */
+ int got_dot; /* Found a decimal point. */
+ int got_digit; /* Seen any digits. */
/* The exponent of the number. */
long int exponent;
goto noconv;
}
- /* Figure out the decimal point character. */
- if (mbtowc(&decimal, _numeric_info->decimal_point, 1) <= 0)
- decimal = (wchar_t) *_numeric_info->decimal_point;
-
s = nptr;
/* Eat whitespace. */
- while (isspace(*s))
+ while (isspace (*s))
++s;
/* Get the sign. */
if (got_dot)
--exponent;
}
- else if (!got_dot && (wchar_t) *s == decimal)
+ else if (!got_dot && *s == '.')
/* Record that we have found the decimal point. */
got_dot = 1;
else
if (!got_digit)
goto noconv;
- if (tolower(*s) == 'e')
+ if (tolower (*s) == 'e')
{
/* Get the exponent specified after the `e' or `E'. */
int save = errno;
errno = 0;
++s;
- exp = strtol(s, &end, 10);
+ exp = strtol (s, &end, 10);
if (errno == ERANGE)
{
/* The exponent overflowed a `long int'. It is probably a safe
if (exponent < 0)
{
- if (num < DBL_MIN * pow(10.0, (double) -exponent))
+ if (num < DBL_MIN * pow (10.0, (double) -exponent))
goto underflow;
}
else if (exponent > 0)
{
- if (num > DBL_MAX * pow(10.0, (double) -exponent))
+ if (num > DBL_MAX * pow (10.0, (double) -exponent))
goto overflow;
}
- num *= pow(10.0, (double) exponent);
+ num *= pow (10.0, (double) exponent);
return num * sign;
- overflow:
+overflow:
/* Return an overflow error. */
errno = ERANGE;
return HUGE_VAL * sign;
- underflow:
+underflow:
/* Return an underflow error. */
if (endptr != NULL)
*endptr = (char *) nptr;
errno = ERANGE;
return 0.0;
- noconv:
+noconv:
/* There was no number. */
if (endptr != NULL)
*endptr = (char *) nptr;