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/* Convert string representation of a number into an uintmax_t value.
Copyright 1999-2005 Free Software Foundation, Inc.
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.
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. */
/* Written by Paul Eggert. Modified by Chet Ramey for Bash. */
#if HAVE_CONFIG_H
# include <config.h>
#endif
#if HAVE_INTTYPES_H
# include <inttypes.h>
#endif
#if HAVE_STDLIB_H
# include <stdlib.h>
#endif
#include <stdc.h>
/* Verify a requirement at compile-time (unlike assert, which is runtime). */
#define verify(name, assertion) struct name { char a[(assertion) ? 1 : -1]; }
#ifndef HAVE_DECL_STRTOUL
"this configure-time declaration test was not run"
#endif
#if !HAVE_DECL_STRTOUL
extern unsigned long strtoul __P((const char *, char **, int));
#endif
#ifndef HAVE_DECL_STRTOULL
"this configure-time declaration test was not run"
#endif
#if !HAVE_DECL_STRTOULL && HAVE_UNSIGNED_LONG_LONG
extern unsigned long long strtoull __P((const char *, char **, int));
#endif
#ifdef strtoumax
#undef strtoumax
#endif
uintmax_t
strtoumax (ptr, endptr, base)
const char *ptr;
char **endptr;
int base;
{
#if HAVE_UNSIGNED_LONG_LONG
verify (size_is_that_of_unsigned_long_or_unsigned_long_long,
(sizeof (uintmax_t) == sizeof (unsigned long) ||
sizeof (uintmax_t) == sizeof (unsigned long long)));
if (sizeof (uintmax_t) != sizeof (unsigned long))
return (strtoull (ptr, endptr, base));
#else
verify (size_is_that_of_unsigned_long, sizeof (uintmax_t) == sizeof (unsigned long));
#endif
return (strtoul (ptr, endptr, base));
}
#ifdef TESTING
# include <stdio.h>
int
main ()
{
char *p, *endptr;
uintmax_t x;
#if HAVE_UNSIGNED_LONG_LONG
unsigned long long y;
#endif
unsigned long z;
printf ("sizeof uintmax_t: %d\n", sizeof (uintmax_t));
#if HAVE_UNSIGNED_LONG_LONG
printf ("sizeof unsigned long long: %d\n", sizeof (unsigned long long));
#endif
printf ("sizeof unsigned long: %d\n", sizeof (unsigned long));
x = strtoumax("42", &endptr, 10);
#if HAVE_LONG_LONG
y = strtoull("42", &endptr, 10);
#else
y = 0;
#endif
z = strtoul("42", &endptr, 10);
printf ("%llu %llu %lu\n", x, y, z);
exit (0);
}
#endif
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