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MFp4: Implementations of the wcstof() and wcstold() functions.

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This commit is contained in:
Tim J. Robbins 2003-03-13 06:29:53 +00:00
parent 569d3c4bf0
commit 542bd65fcb
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=112177
5 changed files with 198 additions and 10 deletions
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3
include/wchar.h
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@ -174,6 +174,9 @@ int vfwscanf(struct __sFILE * __restrict, const wchar_t * __restrict,
int vswscanf(const wchar_t * __restrict, const wchar_t * __restrict,
__va_list);
int vwscanf(const wchar_t * __restrict, __va_list);
float wcstof(const wchar_t * __restrict, wchar_t ** __restrict);
long double
wcstold(const wchar_t * __restrict, wchar_t ** __restrict);
#ifdef __LONG_LONG_SUPPORTED
/* LONGLONG */
long long

5
lib/libc/locale/Makefile.inc
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@ -12,8 +12,8 @@ SRCS+= big5.c btowc.c collate.c collcmp.c euc.c fix_grouping.c frune.c \
mskanji.c nl_langinfo.c nomacros.c none.c rune.c \
runetype.c setinvalidrune.c setlocale.c setrunelocale.c table.c \
tolower.c toupper.c utf2.c utf8.c wcrtomb.c wcsrtombs.c wcsftime.c \
wcstod.c \
wcstoimax.c wcstol.c wcstoll.c \
wcstof.c wcstod.c \
wcstoimax.c wcstol.c wcstold.c wcstoll.c \
wcstombs.c \
wcstoul.c wcstoull.c wcstoumax.c wctob.c wctomb.c wctrans.c wctype.c \
wcwidth.c
@ -50,6 +50,7 @@ MLINKS+=rune.3 fgetrune.3 rune.3 fputrune.3 rune.3 fungetrune.3 \
rune.3 setinvalidrune.3 rune.3 setrunelocale.3 rune.3 sgetrune.3 \
rune.3 sputrune.3
MLINKS+=setlocale.3 localeconv.3
MLINKS+=wcstod.3 wcstof.3 wcstod.3 wcstold.3
MLINKS+=wcstol.3 wcstoul.3 wcstol.3 wcstoll.3 wcstol.3 wcstoull.3 \
wcstol.3 wcstoimax.3 wcstol.3 wcstoumax.3
MLINKS+=wctrans.3 towctrans.3

32
lib/libc/locale/wcstod.3
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@ -1,4 +1,4 @@
.\" Copyright (c) 2002 Tim J. Robbins
.\" Copyright (c) 2002, 2003 Tim J. Robbins
.\" All rights reserved.
.\"
.\" Redistribution and use in source and binary forms, with or without
@ -24,31 +24,47 @@
.\"
.\" $FreeBSD$
.\"
.Dd September 12, 2002
.Dd February 22, 2003
.Dt WCSTOD 3
.Os
.Sh NAME
.Nm wcstod
.Nd "convert string to double"
.Nm wcstof ,
.Nm wcstod ,
.Nm wcstold
.Nd "convert string to float, double or long double"
.Sh LIBRARY
.Lb libc
.Sh SYNOPSIS
.In wchar.h
.Ft float
.Fn wcstof "const wchar_t * restrict nptr" "wchar_t ** restrict endptr"
.Ft long double
.Fn wcstold "const wchar_t * restrict nptr" "wchar_t ** restrict endptr"
.Ft double
.Fn wcstod "const wchar_t * restrict nptr" "wchar_t ** restrict endptr"
.Sh DESCRIPTION
The
.Fn wcstof ,
.Fn wcstod
function is the wide-character version of the
and
.Fn wcstold
functions are the wide-character versions of the
.Fn strtof ,
.Fn strtod
function.
and
.Fn strtold
functios.
Refer to
.Xr strtod 3
for details.
.Sh SEE ALSO
.Xr strtod 3
.Xr strtod 3 ,
.Xr wcstol 3 ,
.Sh STANDARDS
The
.Fn wcstof ,
.Fn wcstod
function conforms to
and
.Fn wcstold
functions conform to
.St -isoC-99 .

84
lib/libc/locale/wcstof.c Normal file
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@ -0,0 +1,84 @@
/*-
* 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 state;
float val;
char *buf, *end, *p;
const wchar_t *wcp;
size_t clen, len;
while (iswspace(*nptr))
nptr++;
state = initial;
wcp = nptr;
if ((len = wcsrtombs(NULL, &wcp, 0, &state)) == (size_t)-1) {
if (endptr != NULL)
*endptr = (wchar_t *)nptr;
return (0.0);
}
if ((buf = malloc(len + 1)) == NULL)
return (0.0);
state = initial;
wcsrtombs(buf, &wcp, len + 1, &state);
val = strtof(buf, &end);
if (endptr != NULL) {
#if 1 /* Fast, assume 1:1 WC:MBS mapping. */
*endptr = (wchar_t *)nptr + (end - buf);
(void)clen;
(void)p;
#else /* Slow, conservative approach. */
state = initial;
*endptr = (wchar_t *)nptr;
p = buf;
while (p < end &&
(clen = mbrlen(p, end - p, &state)) > 0) {
p += clen;
(*endptr)++;
}
#endif
}
free(buf);
return (val);
}

84
lib/libc/locale/wcstold.c Normal file
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@ -0,0 +1,84 @@
/*-
* 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.
*/
long double
wcstold(const wchar_t * __restrict nptr, wchar_t ** __restrict endptr)
{
static const mbstate_t initial;
mbstate_t state;
long double val;
char *buf, *end, *p;
const wchar_t *wcp;
size_t clen, len;
while (iswspace(*nptr))
nptr++;
state = initial;
wcp = nptr;
if ((len = wcsrtombs(NULL, &wcp, 0, &state)) == (size_t)-1) {
if (endptr != NULL)
*endptr = (wchar_t *)nptr;
return (0.0);
}
if ((buf = malloc(len + 1)) == NULL)
return (0.0);
state = initial;
wcsrtombs(buf, &wcp, len + 1, &state);
val = strtold(buf, &end);
if (endptr != NULL) {
#if 1 /* Fast, assume 1:1 WC:MBS mapping. */
*endptr = (wchar_t *)nptr + (end - buf);
(void)clen;
(void)p;
#else /* Slow, conservative approach. */
state = initial;
*endptr = (wchar_t *)nptr;
p = buf;
while (p < end &&
(clen = mbrlen(p, end - p, &state)) > 0) {
p += clen;
(*endptr)++;
}
#endif
}
free(buf);
return (val);
}