.\" $OpenBSD: iswctype.3,v 1.2 2007/05/31 19:19:29 jmc Exp $
.\" $NetBSD: iswctype.3,v 1.5 2003/04/16 13:34:40 wiz Exp $
.\"
.\" Copyright (c)2003 Citrus Project,
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.Dd $Mdocdate: May 31 2007 $
.Dt ISWCTYPE 3
.Os
.\" ----------------------------------------------------------------------
.Sh NAME
.Nm iswctype
.Nd test a character for character class identifier
.\" ----------------------------------------------------------------------
.Sh SYNOPSIS
.Fd #include <wctype.h>
.Ft int
.Fn iswctype "wint_t wc" "wctype_t charclass"
.\" ----------------------------------------------------------------------
.Sh DESCRIPTION
The
.Fn iswctype
function returns a boolean value that indicates whether a wide character
.Fa wc
is in
.Fa charclass .
.Pp
The behaviour of the
.Fn iswctype
is undefined if the
.Fn iswctype
function is called with an invalid
.Fa charclass
(changes of
.Dv LC_CTYPE
category invalidate
.Fa charclass )
or invalid wide character
.Fa wc .
.Pp
The behaviour of the
.Fn iswctype
is affected by the
.Dv LC_CTYPE
category of the current locale.
.\" ----------------------------------------------------------------------
.Sh RETURN VALUES
The
.Fn iswcttype
returns:
.Bl -tag -width 012345678901
.It 0
.Fa wc
is not in
.Fa charclass .
.It non-zero
.Fa wc
is in
.Fa charclass .
.El
.Pp
.\" ----------------------------------------------------------------------
.Sh ERRORS
No errors are defined.
.\" ----------------------------------------------------------------------
.Sh SEE ALSO
.Xr setlocale 3 ,
.Xr towctrans 3 ,
.Xr wctrans 3 ,
.Xr wctype 3
.\" ----------------------------------------------------------------------
.Sh STANDARDS
The
.Fn iswctype
function conforms to
.\" .St -isoC-amd1 .
ISO/IEC 9899/AMD1:1995
.Pq Dq ISO C90, Amendment 1 .