1.\" Copyright (c) 1991, 1993 2.\" The Regents of the University of California. All rights reserved. 3.\" 4.\" This code is derived from software contributed to Berkeley by 5.\" the American National Standards Committee X3, on Information 6.\" Processing Systems. 7.\" 8.\" Redistribution and use in source and binary forms, with or without 9.\" modification, are permitted provided that the following conditions 10.\" are met: 11.\" 1. Redistributions of source code must retain the above copyright 12.\" notice, this list of conditions and the following disclaimer. 13.\" 2. Redistributions in binary form must reproduce the above copyright 14.\" notice, this list of conditions and the following disclaimer in the 15.\" documentation and/or other materials provided with the distribution. 16.\" 3. Neither the name of the University nor the names of its contributors 17.\" may be used to endorse or promote products derived from this software 18.\" without specific prior written permission. 19.\" 20.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30.\" SUCH DAMAGE. 31.\" 32.\" @(#)isprint.3 8.1 (Berkeley) 6/4/93 33.\" $FreeBSD$ 34.\" 35.Dd December 19, 2022 36.Dt ISPRINT 3 37.Os 38.Sh NAME 39.Nm isprint , 40.Nm isprint_l 41.Nd printing character test (space character inclusive) 42.Sh LIBRARY 43.Lb libc 44.Sh SYNOPSIS 45.In ctype.h 46.Ft int 47.Fn isprint "int c" 48.Ft int 49.Fn isprint_l "int c" "locale_t loc" 50.Sh DESCRIPTION 51The 52.Fn isprint 53and 54.Fn isprint_l 55functions test for any printing character, including space 56.Pq Ql "\ " . 57The value of the argument must be representable as an 58.Vt "unsigned char" 59or the value of 60.Dv EOF . 61.Pp 62In the ASCII character set, this includes the following characters 63(with their numeric values shown in octal): 64.Bl -column \&000_``0''__ \&000_``0''__ \&000_``0''__ \&000_``0''__ \&000_``0''__ 65.It "\&040\ sp" Ta "041\ ``!''" Ta "042\ ``""''" Ta "043\ ``#''" Ta "044\ ``$''" 66.It "\&045\ ``%''" Ta "046\ ``&''" Ta "047\ ``'''" Ta "050\ ``(''" Ta "051\ ``)''" 67.It "\&052\ ``*''" Ta "053\ ``+''" Ta "054\ ``,''" Ta "055\ ``-''" Ta "056\ ``.''" 68.It "\&057\ ``/''" Ta "060\ ``0''" Ta "061\ ``1''" Ta "062\ ``2''" Ta "063\ ``3''" 69.It "\&064\ ``4''" Ta "065\ ``5''" Ta "066\ ``6''" Ta "067\ ``7''" Ta "070\ ``8''" 70.It "\&071\ ``9''" Ta "072\ ``:''" Ta "073\ ``;''" Ta "074\ ``<''" Ta "075\ ``=''" 71.It "\&076\ ``>''" Ta "077\ ``?''" Ta "100\ ``@''" Ta "101\ ``A''" Ta "102\ ``B''" 72.It "\&103\ ``C''" Ta "104\ ``D''" Ta "105\ ``E''" Ta "106\ ``F''" Ta "107\ ``G''" 73.It "\&110\ ``H''" Ta "111\ ``I''" Ta "112\ ``J''" Ta "113\ ``K''" Ta "114\ ``L''" 74.It "\&115\ ``M''" Ta "116\ ``N''" Ta "117\ ``O''" Ta "120\ ``P''" Ta "121\ ``Q''" 75.It "\&122\ ``R''" Ta "123\ ``S''" Ta "124\ ``T''" Ta "125\ ``U''" Ta "126\ ``V''" 76.It "\&127\ ``W''" Ta "130\ ``X''" Ta "131\ ``Y''" Ta "132\ ``Z''" Ta "133\ ``[''" 77.It "\&134\ ``\e\|''" Ta "135\ ``]''" Ta "136\ ``^''" Ta "137\ ``_''" Ta "140\ ```''" 78.It "\&141\ ``a''" Ta "142\ ``b''" Ta "143\ ``c''" Ta "144\ ``d''" Ta "145\ ``e''" 79.It "\&146\ ``f''" Ta "147\ ``g''" Ta "150\ ``h''" Ta "151\ ``i''" Ta "152\ ``j''" 80.It "\&153\ ``k''" Ta "154\ ``l''" Ta "155\ ``m''" Ta "156\ ``n''" Ta "157\ ``o''" 81.It "\&160\ ``p''" Ta "161\ ``q''" Ta "162\ ``r''" Ta "163\ ``s''" Ta "164\ ``t''" 82.It "\&165\ ``u''" Ta "166\ ``v''" Ta "167\ ``w''" Ta "170\ ``x''" Ta "171\ ``y''" 83.It "\&172\ ``z''" Ta "173\ ``{''" Ta "174\ ``|''" Ta "175\ ``}''" Ta "176\ ``~''" 84.El 85.Pp 86The 87.Fn isprint_l 88function takes an explicit locale argument, whereas the 89.Fn isprint 90function uses the current global or per-thread locale. 91.Sh RETURN VALUES 92The 93.Fn isprint 94and 95.Fn isprint_l 96functions return zero if the character tests false and 97return non-zero if the character tests true. 98.Sh COMPATIBILITY 99The 100.Bx 4.4 101extension of accepting arguments outside of the range of the 102.Vt "unsigned char" 103type in locales with large character sets is considered obsolete 104and may not be supported in future releases. 105The 106.Fn iswprint 107or 108.Fn iswprint_l 109function should be used instead. 110.Sh SEE ALSO 111.Xr ctype 3 , 112.Xr ctype_l 3 , 113.Xr iswprint 3 , 114.Xr iswprint_l 3 , 115.Xr xlocale 3 , 116.Xr ascii 7 117.Sh STANDARDS 118The 119.Fn isprint 120function conforms to 121.St -isoC . 122.Sh HISTORY 123The 124.Fn isprint 125function first appeared in 126.At v7 . 127