1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2002, 2003 Tim J. Robbins 5 * All rights reserved. 6 * 7 * Copyright (c) 2011 The FreeBSD Foundation 8 * 9 * Portions of this software were developed by David Chisnall 10 * under sponsorship from the FreeBSD Foundation. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 #include <stdlib.h> 35 #include <wchar.h> 36 #include <wctype.h> 37 #include "xlocale_private.h" 38 39 /* 40 * See wcstod() for comments as to the logic used. 41 */ 42 float 43 wcstof_l(const wchar_t * __restrict nptr, wchar_t ** __restrict endptr, 44 locale_t locale) 45 { 46 static const mbstate_t initial; 47 mbstate_t mbs; 48 float val; 49 char *buf, *end; 50 const wchar_t *wcp; 51 size_t len; 52 size_t spaces; 53 FIX_LOCALE(locale); 54 55 wcp = nptr; 56 spaces = 0; 57 while (iswspace_l(*wcp, locale)) { 58 wcp++; 59 spaces++; 60 } 61 62 mbs = initial; 63 if ((len = wcsrtombs_l(NULL, &wcp, 0, &mbs, locale)) == (size_t)-1) { 64 if (endptr != NULL) 65 *endptr = (wchar_t *)nptr; 66 return (0.0); 67 } 68 if ((buf = malloc(len + 1)) == NULL) { 69 if (endptr != NULL) 70 *endptr = (wchar_t *)nptr; 71 return (0.0); 72 } 73 mbs = initial; 74 wcsrtombs_l(buf, &wcp, len + 1, &mbs, locale); 75 76 val = strtof_l(buf, &end, locale); 77 78 if (endptr != NULL) { 79 *endptr = (wchar_t *)nptr + (end - buf); 80 if (buf != end) 81 *endptr += spaces; 82 } 83 84 free(buf); 85 86 return (val); 87 } 88 float 89 wcstof(const wchar_t * __restrict nptr, wchar_t ** __restrict endptr) 90 { 91 return wcstof_l(nptr, endptr, __get_locale()); 92 } 93