xref: /freebsd/lib/libc/locale/isgraph.3 (revision e5b786625f7f82a1fa91e41823332459ea5550f9)
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.\"     @(#)isgraph.3	8.2 (Berkeley) 12/11/93
33.\"
34.Dd December 19, 2022
35.Dt ISGRAPH 3
36.Os
37.Sh NAME
38.Nm isgraph ,
39.Nm isgraph_l
40.Nd printing character test (space character exclusive)
41.Sh LIBRARY
42.Lb libc
43.Sh SYNOPSIS
44.In ctype.h
45.Ft int
46.Fn isgraph "int c"
47.Ft int
48.Fn isgraph_l "int c" "locale_t loc"
49.Sh DESCRIPTION
50The
51.Fn isgraph
52and
53.Fn isgraph_l
54functions test for any printing character except space
55.Pq Ql "\~"
56and other
57locale-specific space-like characters.
58The value of the argument must be representable as an
59.Vt "unsigned char"
60or the value of
61.Dv EOF .
62.Pp
63In the ASCII character set, this includes the following characters
64(with their numeric values shown in octal):
65.Bl -column \&000_``0''__ \&000_``0''__ \&000_``0''__ \&000_``0''__ \&000_``0''__
66.It "\&041\ ``!''" Ta "042\ ``""''" Ta "043\ ``#''" Ta "044\ ``$''" Ta "045\ ``%''"
67.It "\&046\ ``&''" Ta "047\ ``'''" Ta "050\ ``(''" Ta "051\ ``)''" Ta "052\ ``*''"
68.It "\&053\ ``+''" Ta "054\ ``,''" Ta "055\ ``-''" Ta "056\ ``.''" Ta "057\ ``/''"
69.It "\&060\ ``0''" Ta "061\ ``1''" Ta "062\ ``2''" Ta "063\ ``3''" Ta "064\ ``4''"
70.It "\&065\ ``5''" Ta "066\ ``6''" Ta "067\ ``7''" Ta "070\ ``8''" Ta "071\ ``9''"
71.It "\&072\ ``:''" Ta "073\ ``;''" Ta "074\ ``<''" Ta "075\ ``=''" Ta "076\ ``>''"
72.It "\&077\ ``?''" Ta "100\ ``@''" Ta "101\ ``A''" Ta "102\ ``B''" Ta "103\ ``C''"
73.It "\&104\ ``D''" Ta "105\ ``E''" Ta "106\ ``F''" Ta "107\ ``G''" Ta "110\ ``H''"
74.It "\&111\ ``I''" Ta "112\ ``J''" Ta "113\ ``K''" Ta "114\ ``L''" Ta "115\ ``M''"
75.It "\&116\ ``N''" Ta "117\ ``O''" Ta "120\ ``P''" Ta "121\ ``Q''" Ta "122\ ``R''"
76.It "\&123\ ``S''" Ta "124\ ``T''" Ta "125\ ``U''" Ta "126\ ``V''" Ta "127\ ``W''"
77.It "\&130\ ``X''" Ta "131\ ``Y''" Ta "132\ ``Z''" Ta "133\ ``[''" Ta "134\ ``\e\|''"
78.It "\&135\ ``]''" Ta "136\ ``^''" Ta "137\ ``_''" Ta "140\ ```''" Ta "141\ ``a''"
79.It "\&142\ ``b''" Ta "143\ ``c''" Ta "144\ ``d''" Ta "145\ ``e''" Ta "146\ ``f''"
80.It "\&147\ ``g''" Ta "150\ ``h''" Ta "151\ ``i''" Ta "152\ ``j''" Ta "153\ ``k''"
81.It "\&154\ ``l''" Ta "155\ ``m''" Ta "156\ ``n''" Ta "157\ ``o''" Ta "160\ ``p''"
82.It "\&161\ ``q''" Ta "162\ ``r''" Ta "163\ ``s''" Ta "164\ ``t''" Ta "165\ ``u''"
83.It "\&166\ ``v''" Ta "167\ ``w''" Ta "170\ ``x''" Ta "171\ ``y''" Ta "172\ ``z''"
84.It "\&173\ ``{''" Ta "174\ ``|''" Ta "175\ ``}''" Ta "176\ ``~''" Ta \&
85.El
86.Pp
87The
88.Fn isgraph_l
89function takes an explicit locale argument, whereas the
90.Fn isgraph
91function uses the current global or per-thread locale.
92.Sh RETURN VALUES
93The
94.Fn isgraph
95and
96.Fn isgraph_l
97functions return zero if the character tests false and
98return non-zero if the character tests true.
99.Sh COMPATIBILITY
100The
101.Bx 4.4
102extension of accepting arguments outside of the range of the
103.Vt "unsigned char"
104type in locales with large character sets is considered obsolete
105and may not be supported in future releases.
106The
107.Fn iswgraph
108or
109.Fn iswgraph_l
110function should be used instead.
111.Sh SEE ALSO
112.Xr ctype 3 ,
113.Xr ctype_l 3 ,
114.Xr iswgraph 3 ,
115.Xr iswgraph_l 3 ,
116.Xr xlocale 3 ,
117.Xr ascii 7
118.Sh STANDARDS
119The
120.Fn isgraph
121function conforms to
122.St -isoC .
123The
124.Fn isgraph_l
125function conforms to
126.St -p1003.1-2008 .
127