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.\" $OpenBSD: towctrans.3,v 1.3 2017/09/05 03:16:13 schwarze Exp $
.\" $NetBSD: towctrans.3,v 1.5 2004/01/24 16:58:54 wiz Exp $
.\"
.\" Copyright (c) 2017 Ingo Schwarze <schwarze@openbsd.org>
.\" Copyright (c) 2003 Citrus Project
.\" 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.
.\"
.Dd $Mdocdate: September 5 2017 $
.Dt TOWCTRANS 3
.Os
.Sh NAME
.Nm towctrans ,
.Nm towctrans_l
.Nd convert a wide character with a specified map
.Sh SYNOPSIS
.In wctype.h
.Ft wint_t
.Fn towctrans "wint_t wc" "wctrans_t charmap"
.Ft wint_t
.Fn towctrans_l "wint_t wc" "wctrans_t charmap" "locale_t locale"
.Sh DESCRIPTION
These functions convert the wide character
.Fa wc
with a character mapping
.Fa charmap .
.Pp
The behaviour is undefined if
.Fa charmap
or
.Fa wc
is invalid.
When
.Fa charmap
is retrieved with
.Xr wctrans 3 ,
it becomes invalid when the thread-specific character encoding locale
is changed with
.Xr uselocale 3
or when the global character encoding locale is changed with
.Xr setlocale 3 .
When
.Fa charmap
is retrieved with
.Xr wctrans_l 3 ,
it is only valid for use with the same
.Fa locale
argument.
.Sh RETURN VALUES
These functions return the resulting wide character, or
.Fa wc
if there is no corresponding character in
.Fa charmap .
.Sh SEE ALSO
.Xr iswctype 3 ,
.Xr newlocale 3 ,
.Xr setlocale 3 ,
.Xr towlower 3 ,
.Xr wctrans 3
.Sh STANDARDS
The
.Fn towctrans
function conforms to
.St -isoC-amd1 ,
and
.Fn towctrans_l
to
.St -p1003.1-2008 .
.Sh HISTORY
The
.Fn towctrans
function has been available since
.Ox 3.8 ,
and
.Fn towctrans_l
since
.Ox 6.2 .
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