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/*-
* Copyright (c) 2002, 2003 Tim J. Robbins
* All rights reserved.
*
* 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>
/*
* See wcstod() for comments as to the logic used.
*/
float
wcstof(const wchar_t * __restrict nptr, wchar_t ** __restrict endptr)
{
static const mbstate_t initial;
mbstate_t mbs;
float val;
char *buf, *end;
const wchar_t *wcp;
size_t len;
while (iswspace(*nptr))
nptr++;
wcp = nptr;
mbs = initial;
if ((len = wcsrtombs(NULL, &wcp, 0, &mbs)) == (size_t)-1) {
if (endptr != NULL)
*endptr = (wchar_t *)nptr;
return (0.0);
}
if ((buf = malloc(len + 1)) == NULL)
return (0.0);
mbs = initial;
wcsrtombs(buf, &wcp, len + 1, &mbs);
val = strtof(buf, &end);
if (endptr != NULL)
*endptr = (wchar_t *)nptr + (end - buf);
free(buf);
return (val);
}
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