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emacs/lib/strtoimax.c
2024-01-20 11:45:38 -08:00

71 lines
1.9 KiB
C

/* Convert string representation of a number into an intmax_t value.
Copyright (C) 1999, 2001-2004, 2006, 2009-2024 Free Software Foundation,
Inc.
This file 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 3 of the
License, or (at your option) any later version.
This file 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 this program. If not, see <https://www.gnu.org/licenses/>. */
/* Written by Paul Eggert. */
#include <config.h>
/* Verify interface. */
#include <inttypes.h>
#include <stdlib.h>
#ifdef UNSIGNED
# ifndef HAVE_DECL_STRTOULL
"this configure-time declaration test was not run"
# endif
# if !HAVE_DECL_STRTOULL
unsigned long long int strtoull (char const *, char **, int);
# endif
#else
# ifndef HAVE_DECL_STRTOLL
"this configure-time declaration test was not run"
# endif
# if !HAVE_DECL_STRTOLL
long long int strtoll (char const *, char **, int);
# endif
#endif
#ifdef UNSIGNED
# define Int uintmax_t
# define Strtoimax strtoumax
# define Strtol strtoul
# define Strtoll strtoull
# define Unsigned unsigned
#else
# define Int intmax_t
# define Strtoimax strtoimax
# define Strtol strtol
# define Strtoll strtoll
# define Unsigned
#endif
Int
Strtoimax (char const *ptr, char **endptr, int base)
{
static_assert (sizeof (Int) == sizeof (Unsigned long int)
|| sizeof (Int) == sizeof (Unsigned long long int));
if (sizeof (Int) != sizeof (Unsigned long int))
return Strtoll (ptr, endptr, base);
return Strtol (ptr, endptr, base);
}