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5b2abdfb 1/*-
9385eb3d 2 * Copyright (c) 2002, 2003 Tim J. Robbins
5b2abdfb
A
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
5b2abdfb 25 */
9385eb3d
A
26
27#include <sys/cdefs.h>
3d9156a7 28__FBSDID("$FreeBSD: src/lib/libc/locale/wcstold.c,v 1.4 2004/04/07 09:47:56 tjr Exp $");
9385eb3d 29
ad3c9f2a
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30#include "xlocale_private.h"
31
5b2abdfb 32#include <stdlib.h>
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33#include <wchar.h>
34#include <wctype.h>
ad3c9f2a 35#include <_simple.h>
5b2abdfb 36
9385eb3d
A
37/*
38 * See wcstod() for comments as to the logic used.
39 */
ad3c9f2a
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40
41extern size_t __wcs_end_offset(const char * __restrict buf, const char * __restrict end, locale_t loc);
42
9385eb3d 43long double
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44wcstold_l(const wchar_t * __restrict nptr, wchar_t ** __restrict endptr,
45 locale_t loc)
5b2abdfb 46{
9385eb3d 47 static const mbstate_t initial;
3d9156a7 48 mbstate_t mbs;
9385eb3d 49 long double val;
3d9156a7 50 char *buf, *end;
3d9156a7 51 size_t len;
ad3c9f2a
A
52 locale_t ctype;
53 _SIMPLE_STRING b;
54 char mb[MB_CUR_MAX + 1];
55 const wchar_t *nptr0 = nptr;
56 const wchar_t *first;
9385eb3d 57
ad3c9f2a
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58 NORMALIZE_LOCALE(loc);
59 ctype = __numeric_ctype(loc);
60
61 while (iswspace_l(*nptr, ctype))
9385eb3d
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62 nptr++;
63
ad3c9f2a 64 if ((b = _simple_salloc()) == NULL)
9385eb3d 65 return (0.0);
ad3c9f2a
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66
67 first = nptr;
3d9156a7 68 mbs = initial;
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69 while (*nptr && (len = wcrtomb_l(mb, *nptr, &mbs, ctype)) != (size_t)-1) {
70 mb[len] = 0;
71 if (_simple_sappend(b, mb) < 0) { /* no memory */
72 _simple_sfree(b);
73 return (0.0);
74 }
75 nptr++;
76 }
9385eb3d 77
ad3c9f2a
A
78 buf = _simple_string(b);
79 val = strtold_l(buf, &end, loc);
9385eb3d 80
3d9156a7 81 if (endptr != NULL)
ad3c9f2a 82 *endptr = (end == buf) ? (wchar_t *)nptr0 : ((wchar_t *)first + __wcs_end_offset(buf, end, loc));
9385eb3d 83
ad3c9f2a 84 _simple_sfree(b);
5b2abdfb 85
9385eb3d 86 return (val);
5b2abdfb 87}
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88
89long double
90wcstold(const wchar_t * __restrict nptr, wchar_t ** __restrict endptr)
91{
92 return wcstold_l(nptr, endptr, __current_locale());
93}