80 lines
2.2 KiB
Groff
80 lines
2.2 KiB
Groff
.\" Copyright (c) 2002 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.
|
|
.\"
|
|
.\" $FreeBSD$
|
|
.\"
|
|
.Dd August 3, 2002
|
|
.Dt BTOWC 3
|
|
.Os
|
|
.Sh NAME
|
|
.Nm btowc ,
|
|
.Nm wctob
|
|
.Nd "convert between wide and single-byte characters"
|
|
.Sh LIBRARY
|
|
.Lb libc
|
|
.Sh SYNOPSIS
|
|
.In wchar.h
|
|
.Ft wint_t
|
|
.Fn btowc "int c"
|
|
.Ft int
|
|
.Fn wctob "wint_t c"
|
|
.Sh DESCRIPTION
|
|
The
|
|
.Fn btowc
|
|
function converts a single-byte character into a corresponding wide character.
|
|
If the character is
|
|
.Dv EOF
|
|
or not valid in the initial shift state,
|
|
.Fn btowc
|
|
returns
|
|
.Dv WEOF .
|
|
.Pp
|
|
The
|
|
.Fn wctob
|
|
function converts a wide character into a corresponding single-byte character.
|
|
If the wide character is
|
|
.Dv WEOF
|
|
or not able to be represented as a single byte in the initial shift state,
|
|
.Fn wctob
|
|
returns
|
|
.Dv WEOF .
|
|
.Sh SEE ALSO
|
|
.Xr mbrtowc 3 ,
|
|
.Xr multibyte 3 ,
|
|
.Xr wcrtomb 3
|
|
.Sh STANDARDS
|
|
The
|
|
.Fn btowc
|
|
and
|
|
.Fn wctob
|
|
functions conform to
|
|
.St -p1003.1-2001 .
|
|
.Sh HISTORY
|
|
The
|
|
.Fn btowc
|
|
and
|
|
.Fn wctob
|
|
functions first appeared in
|
|
.Fx 5.0 .
|