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96 lines
2.6 KiB
Groff
96 lines
2.6 KiB
Groff
.\" $NetBSD: fwide.3,v 1.3 2002/02/07 07:00:25 ross Exp $
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.\"
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.\" Copyright (c)2001 Citrus Project,
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.\" All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" $Citrus: xpg4dl/FreeBSD/lib/libc/stdio/fwide.3,v 1.2 2001/12/07 04:47:08 yamt Exp $
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.\" $FreeBSD$
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.\"
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.Dd October 24, 2001
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.Dt FWIDE 3
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.Os
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.Sh NAME
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.Nm fwide
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.Nd get/set orientation of a stream
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.Sh LIBRARY
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.Lb libc
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.Sh SYNOPSIS
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.In stdio.h
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.In wchar.h
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.Ft int
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.Fn fwide "FILE *stream" "int mode"
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.Sh DESCRIPTION
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The
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.Fn fwide
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function
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determines the orientation of the stream pointed at by
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.Fa stream .
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.Pp
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If the orientation of
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.Fa stream
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has already been determined,
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.Fn fwide
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leaves it unchanged.
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Otherwise,
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.Fn fwide
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sets the orientation of
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.Fa stream
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according to
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.Fa mode .
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.Pp
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If
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.Fa mode
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is less than zero,
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.Fa stream
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is set to byte-oriented.
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If it is greater than zero,
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.Fa stream
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is set to wide-oriented.
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Otherwise,
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.Fa mode
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is zero, and
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.Fa stream
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is unchanged.
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.Sh RETURN VALUES
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.Fn fwide
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returns a value according to orientation after the call of
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.Fn fwide ;
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a value less than zero if byte-oriented, a value greater than zero
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if wide-oriented, and zero if the stream has no orientation.
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.Sh SEE ALSO
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.Xr ferror 3 ,
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.Xr fgetc 3 ,
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.Xr fgetwc 3 ,
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.Xr fopen 3 ,
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.Xr fputc 3 ,
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.Xr fputwc 3 ,
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.Xr freopen 3 ,
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.Xr stdio 3
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.Sh STANDARDS
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The
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.Fn fwide
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function
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conforms to
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.St -isoC-99 .
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