1.\" Copyright (c) 2002 Tim J. Robbins 2.\" All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. 9.\" 2. Redistributions in binary form must reproduce the above copyright 10.\" notice, this list of conditions and the following disclaimer in the 11.\" documentation and/or other materials provided with the distribution. 12.\" 13.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 14.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 16.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 17.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 18.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 19.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 20.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 21.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 22.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 23.\" SUCH DAMAGE. 24.\" 25.Dd March 27, 2004 26.Dt WCTYPE 3 27.Os 28.Sh NAME 29.Nm iswctype , wctype 30.Nd "wide character class functions" 31.Sh LIBRARY 32.Lb libc 33.Sh SYNOPSIS 34.In wctype.h 35.Ft int 36.Fn iswctype "wint_t wc" "wctype_t charclass" 37.Ft wctype_t 38.Fn wctype "const char *property" 39.Sh DESCRIPTION 40The 41.Fn wctype 42function returns a value of type 43.Vt wctype_t 44which represents the requested wide character class and 45may be used as the second argument for calls to 46.Fn iswctype . 47.Pp 48The following character class names are recognised: 49.Bl -column -offset indent ".Li alnum" ".Li cntrl" ".Li ideogram" ".Li print" ".Li space" 50.It Li "alnum cntrl ideogram print space xdigit" 51.It Li "alpha digit lower punct special" 52.It Li "blank graph phonogram rune upper" 53.El 54.Pp 55The 56.Fn iswctype 57function checks whether the wide character 58.Fa wc 59is in the character class 60.Fa charclass . 61.Sh RETURN VALUES 62The 63.Fn iswctype 64function returns non-zero if and only if 65.Fa wc 66has the property described by 67.Fa charclass , 68or 69.Fa charclass 70is zero. 71.Pp 72The 73.Fn wctype 74function returns 0 if 75.Fa property 76is invalid, otherwise it returns a value of type 77.Vt wctype_t 78that can be used in subsequent calls to 79.Fn iswctype . 80.Sh EXAMPLES 81Reimplement 82.Xr iswalpha 3 83in terms of 84.Fn iswctype 85and 86.Fn wctype : 87.Bd -literal -offset indent 88int 89myiswalpha(wint_t wc) 90{ 91 return (iswctype(wc, wctype("alpha"))); 92} 93.Ed 94.Sh SEE ALSO 95.Xr ctype 3 , 96.Xr nextwctype 3 97.Sh STANDARDS 98The 99.Fn iswctype 100and 101.Fn wctype 102functions conform to 103.St -p1003.1-2001 . 104The 105.Dq Li ideogram , 106.Dq Li phonogram , 107.Dq Li special , 108and 109.Dq Li rune 110character classes are extensions. 111.Sh HISTORY 112The 113.Fn iswctype 114and 115.Fn wctype 116functions first appeared in 117.Fx 5.0 . 118