1.\" $OpenBSD: ispunct.3,v 1.12 2017/09/05 03:16:13 schwarze Exp $ 2.\" 3.\" Copyright (c) 1991 The Regents of the University of California. 4.\" Copyright (c) 2017 Ingo Schwarze <schwarze@openbsd.org> 5.\" All rights reserved. 6.\" 7.\" This code is derived from software contributed to Berkeley by 8.\" the American National Standards Committee X3, on Information 9.\" Processing Systems. 10.\" 11.\" Redistribution and use in source and binary forms, with or without 12.\" modification, are permitted provided that the following conditions 13.\" are met: 14.\" 1. Redistributions of source code must retain the above copyright 15.\" notice, this list of conditions and the following disclaimer. 16.\" 2. Redistributions in binary form must reproduce the above copyright 17.\" notice, this list of conditions and the following disclaimer in the 18.\" documentation and/or other materials provided with the distribution. 19.\" 3. Neither the name of the University nor the names of its contributors 20.\" may be used to endorse or promote products derived from this software 21.\" without specific prior written permission. 22.\" 23.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33.\" SUCH DAMAGE. 34.\" 35.Dd $Mdocdate: September 5 2017 $ 36.Dt ISPUNCT 3 37.Os 38.Sh NAME 39.Nm ispunct , 40.Nm ispunct_l 41.Nd punctuation single-byte character test 42.Sh SYNOPSIS 43.In ctype.h 44.Ft int 45.Fn ispunct "int c" 46.Ft int 47.Fn ispunct_l "int c" "locale_t locale" 48.Sh DESCRIPTION 49The 50.Fn ispunct 51and 52.Fn ispunct_l 53test for any punctuation characters. 54.Pp 55In the C locale, the complete list of punctuation characters is: 56.Pp 57.Dl !\(dq#$%&\(aq()*+,\-./:;<=>?@[\e]\(ha_\(ga{|}\(ti 58.Pp 59These are all characters for which 60.Xr isgraph 3 61is true but 62.Xr isalnum 3 63is not. 64.Ox 65always uses the C locale for these functions, 66ignoring the global locale, the thread-specific locale, and the 67.Fa locale 68argument. 69.Sh RETURN VALUES 70These functions return zero if the character tests false or 71non-zero if the character tests true. 72.Sh ENVIRONMENT 73On systems supporting non-ASCII single-byte character encodings, 74results of these functions may differ, and the results of 75.Fn ispunct 76may depend on the 77.Ev LC_CTYPE 78.Xr locale 1 . 79.Sh SEE ALSO 80.Xr isalnum 3 , 81.Xr isalpha 3 , 82.Xr isascii 3 , 83.Xr isblank 3 , 84.Xr iscntrl 3 , 85.Xr isdigit 3 , 86.Xr isgraph 3 , 87.Xr islower 3 , 88.Xr isprint 3 , 89.Xr isspace 3 , 90.Xr isupper 3 , 91.Xr iswpunct 3 , 92.Xr isxdigit 3 , 93.Xr stdio 3 , 94.Xr toascii 3 , 95.Xr tolower 3 , 96.Xr toupper 3 , 97.Xr ascii 7 98.Sh STANDARDS 99The 100.Fn ispunct 101function conforms to 102.St -ansiC , 103and 104.Fn ispunct_l 105to 106.St -p1003.1-2008 . 107.Sh HISTORY 108The 109.Fn ispunct 110function first appeared in 111.At v7 , 112and 113.Fn ispunct_l 114has been available since 115.Ox 6.2 . 116.Sh CAVEATS 117The argument 118.Fa c 119must be 120.Dv EOF 121or representable as an 122.Li unsigned char ; 123otherwise, the result is undefined. 124