.\" $NetBSD: iswctype.3,v 1.7 2007/05/21 15:20:40 tnozaki Exp $
.\"
.\" Copyright (c)2003 Citrus Project,
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.Dd March 4, 2003
.Dt ISWCTYPE 3
.Os
.\" ----------------------------------------------------------------------
.Sh NAME
.Nm iswctype
.Nd test a character for character class identifier
.\" ----------------------------------------------------------------------
.Sh LIBRARY
.Lb libc
.\" ----------------------------------------------------------------------
.Sh SYNOPSIS
.In 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
.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
.Fn iswctype
is affected by the
.Dv LC_CTYPE
category of the current locale.
.\" ----------------------------------------------------------------------
.Sh RETURN VALUES
The
.Fn iswctype
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 .