1.\" $NetBSD: isascii.3,v 1.11 2002/11/08 02:05:16 enami Exp $ 2.\" 3.\" Copyright (c) 1989, 1991 The Regents of the University of California. 4.\" All rights reserved. 5.\" 6.\" Redistribution and use in source and binary forms, with or without 7.\" modification, are permitted provided that the following conditions 8.\" are met: 9.\" 1. Redistributions of source code must retain the above copyright 10.\" notice, this list of conditions and the following disclaimer. 11.\" 2. Redistributions in binary form must reproduce the above copyright 12.\" notice, this list of conditions and the following disclaimer in the 13.\" documentation and/or other materials provided with the distribution. 14.\" 3. All advertising materials mentioning features or use of this software 15.\" must display the following acknowledgement: 16.\" This product includes software developed by the University of 17.\" California, Berkeley and its contributors. 18.\" 4. 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.\" @(#)isascii.3 5.1 (Berkeley) 5/2/91 35.\" 36.Dd May 2, 1991 37.Dt ISASCII 3 38.Os 39.Sh NAME 40.Nm isascii 41.Nd test for ASCII character 42.Sh LIBRARY 43.Lb libc 44.Sh SYNOPSIS 45.Fd #include \*[Lt]ctype.h\*[Gt] 46.Ft int 47.Fn isascii "int c" 48.Sh DESCRIPTION 49The 50.Fn isascii 51function tests for an 52.Tn ASCII 53character, which is any character with a value less than or 54equal to 0177. 55.Sh SEE ALSO 56.Xr isalnum 3 , 57.Xr isalpha 3 , 58.Xr isblank 3 , 59.Xr iscntrl 3 , 60.Xr isdigit 3 , 61.Xr isgraph 3 , 62.Xr islower 3 , 63.Xr isprint 3 , 64.Xr ispunct 3 , 65.Xr isspace 3 , 66.Xr isupper 3 , 67.Xr isxdigit 3 , 68.Xr stdio 3 , 69.Xr toascii 3 , 70.Xr tolower 3 , 71.Xr toupper 3 , 72.Xr ascii 7 73.Sh STANDARDS 74The 75.Fn isascii 76function conforms to 77.St -xpg4 . 78.Sh CAVEATS 79The argument to 80.Fn isascii 81must be 82.Dv EOF 83or representable as an 84.Li unsigned char ; 85otherwise, the result is undefined. 86