mirror of
https://github.com/coreutils/coreutils.git
synced 2024-12-14 12:23:55 +08:00
82 lines
1.8 KiB
C
82 lines
1.8 KiB
C
/* Convert string to double, using the C locale.
|
|
|
|
Copyright (C) 2003, 2004 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. */
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
# include <config.h>
|
|
#endif
|
|
|
|
#include "c-strtod.h"
|
|
|
|
#include <locale.h>
|
|
#include <stdlib.h>
|
|
|
|
#include "xalloc.h"
|
|
|
|
#if LONG
|
|
# define C_STRTOD c_strtold
|
|
# define DOUBLE long double
|
|
# define STRTOD_L strtold_l
|
|
#else
|
|
# define C_STRTOD c_strtod
|
|
# define DOUBLE double
|
|
# define STRTOD_L strtod_l
|
|
#endif
|
|
|
|
/* c_strtold falls back on strtod if strtold doesn't conform to C99. */
|
|
#if LONG && HAVE_C99_STRTOLD
|
|
# define STRTOD strtold
|
|
#else
|
|
# define STRTOD strtod
|
|
#endif
|
|
|
|
DOUBLE
|
|
C_STRTOD (char const *nptr, char **endptr)
|
|
{
|
|
DOUBLE r;
|
|
|
|
#ifdef LC_ALL_MASK
|
|
|
|
locale_t c_locale = newlocale (LC_ALL_MASK, "C", 0);
|
|
r = STRTOD_L (nptr, endptr, c_locale);
|
|
freelocale (c_locale);
|
|
|
|
#else
|
|
|
|
char *saved_locale = setlocale (LC_NUMERIC, NULL);
|
|
|
|
if (saved_locale)
|
|
{
|
|
saved_locale = xstrdup (saved_locale);
|
|
setlocale (LC_NUMERIC, "C");
|
|
}
|
|
|
|
r = STRTOD (nptr, endptr);
|
|
|
|
if (saved_locale)
|
|
{
|
|
setlocale (LC_NUMERIC, saved_locale);
|
|
free (saved_locale);
|
|
}
|
|
|
|
#endif
|
|
|
|
return r;
|
|
}
|