glibc/stdlib/strtol.c

110 lines
2.6 KiB
C

/* Convert string representation of a number into an integer value.
Copyright (C) 1991-2017 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 Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#include <stdlib.h>
#include <wchar.h>
#include <locale/localeinfo.h>
#ifndef UNSIGNED
# define UNSIGNED 0
# define INT LONG int
#else
# define INT unsigned LONG int
#endif
#if UNSIGNED
# ifdef USE_WIDE_CHAR
# ifdef QUAD
# define strtol wcstoull
# define __strtol_l __wcstoull_l
# else
# define strtol wcstoul
# define __strtol_l __wcstoul_l
# endif
# else
# ifdef QUAD
# define strtol strtoull
# define __strtol_l __strtoull_l
# else
# define strtol strtoul
# define __strtol_l __strtoul_l
# endif
# endif
#else
# ifdef USE_WIDE_CHAR
# ifdef QUAD
# define strtol wcstoll
# define __strtol_l __wcstoll_l
# else
# define strtol wcstol
# define __strtol_l __wcstol_l
# endif
# else
# ifdef QUAD
# define strtol strtoll
# define __strtol_l __strtoll_l
# endif
# endif
#endif
/* If QUAD is defined, we are defining `strtoll' or `strtoull',
operating on `long long int's. */
#ifdef QUAD
# define LONG long long
#else
# define LONG long
#endif
#ifdef USE_WIDE_CHAR
# define STRING_TYPE wchar_t
#else
# define STRING_TYPE char
#endif
#define INTERNAL(X) INTERNAL1(X)
#define INTERNAL1(X) __##X##_internal
#define SYM__(X) SYM__1 (X)
#define SYM__1(X) __ ## X
#define __strtol SYM__ (strtol)
extern INT INTERNAL (__strtol_l) (const STRING_TYPE *, STRING_TYPE **, int,
int, __locale_t);
INT
INTERNAL (strtol) (const STRING_TYPE *nptr, STRING_TYPE **endptr,
int base, int group)
{
return INTERNAL (__strtol_l) (nptr, endptr, base, group, _NL_CURRENT_LOCALE);
}
libc_hidden_def (INTERNAL (strtol))
INT
__strtol (const STRING_TYPE *nptr, STRING_TYPE **endptr, int base)
{
return INTERNAL (__strtol_l) (nptr, endptr, base, 0, _NL_CURRENT_LOCALE);
}
weak_alias (__strtol, strtol)
libc_hidden_weak (strtol)