1.\" $NetBSD: iswalnum.3,v 1.9 2004/01/24 16:58:54 wiz Exp $ 2.\" 3.\" Copyright (c) 1991 The Regents of the University of California. 4.\" All rights reserved. 5.\" 6.\" This code is derived from software contributed to Berkeley by 7.\" the American National Standards Committee X3, on Information 8.\" Processing Systems. 9.\" 10.\" Redistribution and use in source and binary forms, with or without 11.\" modification, are permitted provided that the following conditions 12.\" are met: 13.\" 1. Redistributions of source code must retain the above copyright 14.\" notice, this list of conditions and the following disclaimer. 15.\" 2. Redistributions in binary form must reproduce the above copyright 16.\" notice, this list of conditions and the following disclaimer in the 17.\" documentation and/or other materials provided with the distribution. 18.\" 3. Neither the name of the University nor the names of its contributors 19.\" may be used to endorse or promote products derived from this software 20.\" without specific prior written permission. 21.\" 22.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32.\" SUCH DAMAGE. 33.\" 34.\" @(#)isalnum.3 5.2 (Berkeley) 6/29/91 35.\" 36.Dd December 22, 2000 37.Dt ISWALNUM 3 38.Os 39.Sh NAME 40.Nm iswalnum , 41.Nm iswalpha , 42.Nm iswblank , 43.Nm iswcntrl , 44.Nm iswdigit , 45.Nm iswgraph , 46.Nm iswlower , 47.Nm iswprint , 48.Nm iswpunct , 49.Nm iswspace , 50.Nm iswupper , 51.Nm iswxdigit 52.Nd wide character classification utilities 53.Sh LIBRARY 54.Lb libc 55.Sh SYNOPSIS 56.In wctype.h 57.Ft int 58.Fn iswalnum "wint_t wc" 59.Ft int 60.Fn iswalpha "wint_t wc" 61.Ft int 62.Fn iswblank "wint_t wc" 63.Ft int 64.Fn iswcntrl "wint_t wc" 65.Ft int 66.Fn iswdigit "wint_t wc" 67.Ft int 68.Fn iswgraph "wint_t wc" 69.Ft int 70.Fn iswlower "wint_t wc" 71.Ft int 72.Fn iswprint "wint_t wc" 73.Ft int 74.Fn iswpunct "wint_t wc" 75.Ft int 76.Fn iswspace "wint_t wc" 77.Ft int 78.Fn iswupper "wint_t wc" 79.Ft int 80.Fn iswxdigit "wint_t wc" 81.Sh DESCRIPTION 82The functions are character classification utility functions, 83for use with wide characters 84.Po 85.Fa wchar_t 86or 87.Fa wint_t 88.Pc . 89See the description of singlebyte classification functions, like 90.Xr isalnum 3 , 91for details. 92.Sh RETURN VALUES 93The functions return zero if the character tests false and 94return non-zero if the character tests true. 95.Sh SEE ALSO 96.Xr isalnum 3 , 97.Xr isalpha 3 , 98.Xr isblank 3 , 99.Xr iscntrl 3 , 100.Xr isdigit 3 , 101.Xr isgraph 3 , 102.Xr islower 3 , 103.Xr isprint 3 , 104.Xr ispunct 3 , 105.Xr isspace 3 , 106.Xr isupper 3 , 107.Xr isxdigit 3 108.Sh STANDARDS 109The functions conform to 110.St -isoC-99 . 111.Sh CAVEATS 112The argument to these functions must be 113.Dv WEOF 114or a valid 115.Fa wchar_t 116value with the current locale; otherwise, the result is undefined. 117