1.\" $NetBSD: iswalnum.3,v 1.5 2002/07/10 14:46:10 yamt 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.\" $FreeBSD$ 36.\" 37.Dd October 3, 2002 38.Dt ISWALNUM 3 39.Os 40.Sh NAME 41.Nm iswalnum , 42.Nm iswalpha , 43.Nm iswascii , 44.Nm iswblank , 45.Nm iswcntrl , 46.Nm iswdigit , 47.Nm iswgraph , 48.Nm iswhexnumber , 49.Nm iswideogram , 50.Nm iswlower , 51.Nm iswnumber , 52.Nm iswphonogram , 53.Nm iswprint , 54.Nm iswpunct , 55.Nm iswrune , 56.Nm iswspace , 57.Nm iswspecial , 58.Nm iswupper , 59.Nm iswxdigit 60.Nd wide character classification utilities 61.Sh LIBRARY 62.Lb libc 63.Sh SYNOPSIS 64.In wctype.h 65.Ft int 66.Fn iswalnum "wint_t wc" 67.Ft int 68.Fn iswalpha "wint_t wc" 69.Ft int 70.Fn iswascii "wint_t wc" 71.Ft int 72.Fn iswblank "wint_t wc" 73.Ft int 74.Fn iswcntrl "wint_t wc" 75.Ft int 76.Fn iswdigit "wint_t wc" 77.Ft int 78.Fn iswgraph "wint_t wc" 79.Ft int 80.Fn iswhexnumber "wint_t wc" 81.Ft int 82.Fn iswideogram "wint_t wc" 83.Ft int 84.Fn iswlower "wint_t wc" 85.Ft int 86.Fn iswnumber "wint_t wc" 87.Ft int 88.Fn iswphonogram "wint_t wc" 89.Ft int 90.Fn iswprint "wint_t wc" 91.Ft int 92.Fn iswpunct "wint_t wc" 93.Ft int 94.Fn iswrune "wint_t wc" 95.Ft int 96.Fn iswspace "wint_t wc" 97.Ft int 98.Fn iswspecial "wint_t wc" 99.Ft int 100.Fn iswupper "wint_t wc" 101.Ft int 102.Fn iswxdigit "wint_t wc" 103.Sh DESCRIPTION 104The above functions are character classification utility functions, 105for use with wide characters 106.Vt ( wchar_t 107or 108.Vt wint_t ) . 109See the description for the similarly-named single byte classification 110functions (like 111.Xr isalnum 3 ) , 112for details. 113.Sh RETURN VALUES 114The functions return zero if the character tests false and 115return non-zero if the character tests true. 116.Sh SEE ALSO 117.Xr isalnum 3 , 118.Xr isalpha 3 , 119.Xr isascii 3 , 120.Xr isblank 3 , 121.Xr iscntrl 3 , 122.Xr isdigit 3 , 123.Xr isgraph 3 , 124.Xr ishexnumber 3 , 125.Xr isideogram 3 , 126.Xr islower 3 , 127.Xr isnumber 3 , 128.Xr isphonogram 3 , 129.Xr isprint 3 , 130.Xr ispunct 3 , 131.Xr isrune 3 , 132.Xr isspace 3 , 133.Xr isspecial 3 , 134.Xr isupper 3 , 135.Xr isxdigit 3 , 136.Xr wctype 3 137.Sh STANDARDS 138These functions conform to 139.St -p1003.1-2001 , 140except 141.Fn iswascii , 142.Fn iswhexnumber , 143.Fn iswideogram , 144.Fn iswnumber , 145.Fn iswphonogram , 146.Fn iswrune 147and 148.Fn iswspecial , 149which are 150.Fx 151extensions. 152.Sh CAVEATS 153The result of these functions is undefined unless 154the argument is 155.Dv WEOF 156or a valid 157.Vt wchar_t 158value for the current locale. 159