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/* Convert string representation of a number into an intmax_t value.
Copyright 1999, 2001 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. */
#if HAVE_CONFIG_H
# include <config.h>
#endif
#if HAVE_INTTYPES_H
# include <inttypes.h>
#endif
#if HAVE_STDLIB_H
# include <stdlib.h>
#endif
#ifndef PARAMS
# if defined PROTOTYPES || defined __STDC__
# define PARAMS(Args) Args
# else
# define PARAMS(Args) ()
# endif
#endif
/* Verify a requirement at compile-time (unlike assert, which is runtime). */
#define verify(name, assertion) struct name { char a[(assertion) ? 1 : -1]; }
#ifdef UNSIGNED
# ifndef HAVE_DECL_STRTOUL
"this configure-time declaration test was not run"
# endif
# if !HAVE_DECL_STRTOUL
unsigned long strtoul PARAMS ((char const *, char **, int));
# endif
# ifndef HAVE_DECL_STRTOULL
"this configure-time declaration test was not run"
# endif
# if !HAVE_DECL_STRTOULL && HAVE_UNSIGNED_LONG_LONG
unsigned long long strtoull PARAMS ((char const *, char **, int));
# endif
#else
# ifndef HAVE_DECL_STRTOL
"this configure-time declaration test was not run"
# endif
# if !HAVE_DECL_STRTOL
long strtol PARAMS ((char const *, char **, int));
# endif
# ifndef HAVE_DECL_STRTOLL
"this configure-time declaration test was not run"
# endif
# if !HAVE_DECL_STRTOLL && HAVE_UNSIGNED_LONG_LONG
long long strtoll PARAMS ((char const *, char **, int));
# endif
#endif
#ifdef UNSIGNED
# define INT uintmax_t
# define strtoimax strtoumax
# define strtol strtoul
# define strtoll strtoull
#else
# define INT intmax_t
#endif
INT
strtoimax (char const *ptr, char **endptr, int base)
{
#if HAVE_UNSIGNED_LONG_LONG
verify (size_is_that_of_long_or_long_long,
(sizeof (INT) == sizeof strtol (ptr, endptr, base)
|| sizeof (INT) == sizeof strtoll (ptr, endptr, base)));
if (sizeof (INT) != sizeof strtol (ptr, endptr, base))
return strtoll (ptr, endptr, base);
#else
verify (size_is_that_of_long,
sizeof (INT) == sizeof strtol (ptr, endptr, base));
#endif
return strtol (ptr, endptr, base);
}
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