.\" Copyright (c) Bruno Haible <haible@clisp.cons.org>
.\"
-.\" %%%LICENSE_START(GPLv2+_DOC_ONEPARA)
-.\" This is free documentation; you can redistribute it and/or
-.\" modify it under the terms of the GNU General Public License as
-.\" published by the Free Software Foundation; either version 2 of
-.\" the License, or (at your option) any later version.
-.\" %%%LICENSE_END
+.\" SPDX-License-Identifier: GPL-2.0-or-later
.\"
.\" References consulted:
.\" GNU glibc-2 source code and manual
.\" OpenGroup's Single UNIX specification http://www.UNIX-systems.org/online.html
.\" ISO/IEC 9899:1999
.\"
-.TH MBSRTOWCS 3 2011-09-28 "GNU" "Linux Programmer's Manual"
+.TH MBSRTOWCS 3 (date) "Linux man-pages (unreleased)"
.SH NAME
mbsrtowcs \- convert a multibyte string to a wide-character string
+.SH LIBRARY
+Standard C library
+.RI ( libc ", " \-lc )
.SH SYNOPSIS
.nf
.B #include <wchar.h>
-.sp
-.BI "size_t mbsrtowcs(wchar_t *" dest ", const char **" src ,
-.BI " size_t " len ", mbstate_t *" ps );
+.PP
+.BI "size_t mbsrtowcs(wchar_t *restrict " dest ", const char **restrict " src ,
+.BI " size_t " len ", mbstate_t *restrict " ps );
.fi
.SH DESCRIPTION
If
.I dest
-is not a NULL pointer, the
+is not NULL, the
.BR mbsrtowcs ()
function converts the
multibyte string
The conversion can stop for three reasons:
.IP 1. 3
An invalid multibyte sequence has been encountered.
-In this case
+In this case,
.I *src
is left pointing to the invalid multibyte sequence,
.I (size_t)\ \-1
.BR EILSEQ .
.IP 2.
.I len
-non-L\(aq\\0\(aq wide characters have been stored at
+non-L\(aq\e0\(aq wide characters have been stored at
.IR dest .
-In this
-case
+In this case,
.I *src
is left pointing to the next
multibyte sequence to be converted,
is returned.
.IP 3.
The multibyte string has been completely converted, including the
-terminating null wide character (\(aq\\0\(aq), which has the side
+terminating null wide character (\(aq\e0\(aq), which has the side
effect of bringing back
.I *ps
to the
initial state.
-In this case
+In this case,
.I *src
is set to NULL, and the number of wide
characters written to
excluding the terminating null wide character, is returned.
.PP
If
-.IR dest
+.I dest
is NULL,
.I len
is ignored,
In both of the above cases,
if
.I ps
-is a NULL pointer, a static anonymous
+is NULL, a static anonymous
state known only to the
.BR mbsrtowcs ()
function is used instead.
.I errno
set to
.BR EILSEQ .
-.SH CONFORMING TO
-C99.
+.SH ATTRIBUTES
+For an explanation of the terms used in this section, see
+.BR attributes (7).
+.ad l
+.nh
+.TS
+allbox;
+lb lb lbx
+l l l.
+Interface Attribute Value
+T{
+.BR mbsrtowcs ()
+T} Thread safety T{
+MT-Unsafe race:mbsrtowcs/!ps
+T}
+.TE
+.hy
+.ad
+.sp 1
+.SH STANDARDS
+POSIX.1-2001, POSIX.1-2008, C99.
.SH NOTES
The behavior of
.BR mbsrtowcs ()
is not multithread safe.
.SH SEE ALSO
.BR iconv (3),
+.BR mbrtowc (3),
+.BR mbsinit (3),
.BR mbsnrtowcs (3),
.BR mbstowcs (3)