/*- * SPDX-License-Identifier: BSD-2-Clause-FreeBSD * * Copyright (c) 2002, 2003 Tim J. Robbins * All rights reserved. * * Copyright (c) 2011 The FreeBSD Foundation * All rights reserved. * Portions of this software were developed by David Chisnall * under sponsorship from the FreeBSD Foundation. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include <sys/cdefs.h> __FBSDID("$FreeBSD$"); #include <stdlib.h> #include <wchar.h> #include <wctype.h> #include "xlocale_private.h" /* * See wcstod() for comments as to the logic used. */ long double wcstold_l(const wchar_t * __restrict nptr, wchar_t ** __restrict endptr, locale_t locale) { static const mbstate_t initial; mbstate_t mbs; long double val; char *buf, *end; const wchar_t *wcp; size_t len; size_t spaces; FIX_LOCALE(locale); wcp = nptr; spaces = 0; while (iswspace_l(*wcp, locale)) { wcp++; spaces++; } mbs = initial; if ((len = wcsrtombs_l(NULL, &wcp, 0, &mbs, locale)) == (size_t)-1) { if (endptr != NULL) *endptr = (wchar_t *)nptr; return (0.0); } if ((buf = malloc(len + 1)) == NULL) { if (endptr != NULL) *endptr = (wchar_t *)nptr; return (0.0); } mbs = initial; wcsrtombs_l(buf, &wcp, len + 1, &mbs, locale); val = strtold_l(buf, &end, locale); if (endptr != NULL) { *endptr = (wchar_t *)nptr + (end - buf); if (buf != end) *endptr += spaces; } free(buf); return (val); } long double wcstold(const wchar_t * __restrict nptr, wchar_t ** __restrict endptr) { return wcstold_l(nptr, endptr, __get_locale()); } |