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1.\" Copyright (c) 1991, 1993
2.\" The Regents of the University of California. All rights reserved.
1.\" Copyright (c) 2011 The FreeBSD Foundation
2.\" All rights reserved.
3.\"
4.\" This documentation was written by David Chisnall under sponsorship from
5.\" the FreeBSD Foundation.
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28.\" @(#)ctype.3 8.1 (Berkeley) 6/4/93
29.\" $FreeBSD: head/lib/libc/locale/ctype.3 196820 2009-09-04 07:44:58Z des $
28.\" $FreeBSD: head/lib/libc/locale/ctype_l.3 232935 2012-03-13 20:02:41Z theraven $
29.\"
31.Dd March 30, 2004
32.Dt CTYPE 3
30.Dd March 6, 2012
31.Dt CTYPE_L 3
32.Os
33.Sh NAME
35.Nm digittoint ,
36.Nm isalnum ,
37.Nm isalpha ,
38.Nm isascii ,
39.Nm isblank ,
40.Nm iscntrl ,
41.Nm isdigit ,
42.Nm isgraph ,
43.Nm ishexnumber ,
44.Nm isideogram ,
45.Nm islower ,
46.Nm isnumber ,
47.Nm isphonogram ,
48.Nm isprint ,
49.Nm ispunct ,
50.Nm isrune ,
51.Nm isspace ,
52.Nm isspecial ,
53.Nm isupper ,
54.Nm isxdigit ,
55.Nm toascii ,
56.Nm tolower ,
57.Nm toupper
58.Nd character classification macros
34.Nm digittoint_l ,
35.Nm isalnum_l ,
36.Nm isalpha_l ,
37.Nm isascii_l ,
38.Nm isblank_l ,
39.Nm iscntrl_l ,
40.Nm isdigit_l ,
41.Nm isgraph_l ,
42.Nm ishexnumber_l ,
43.Nm isideogram_l ,
44.Nm islower_l ,
45.Nm isnumber_l ,
46.Nm isphonogram_l ,
47.Nm isprint_l ,
48.Nm ispunct_l ,
49.Nm isrune_l ,
50.Nm isspace_l ,
51.Nm isspecial_l ,
52.Nm isupper_l ,
53.Nm isxdigit_l ,
54.Nm tolower_l ,
55.Nm toupper_l
56.Nd character classification functions
57.Sh LIBRARY
58.Lb libc
59.Sh SYNOPSIS
60.In ctype.h
61.Ft int
64.Fn digittoint "int c"
62.Fn digittoint_l "int c" "locale_t loc"
63.Ft int
66.Fn isalnum "int c"
64.Fn isalnum_l "int c" "locale_t loc"
65.Ft int
68.Fn isalpha "int c"
66.Fn isalpha_l "int c" "locale_t loc"
67.Ft int
70.Fn isascii "int c"
68.Fn isascii_l "int c" "locale_t loc"
69.Ft int
72.Fn iscntrl "int c"
70.Fn iscntrl_l "int c" "locale_t loc"
71.Ft int
74.Fn isdigit "int c"
72.Fn isdigit_l "int c" "locale_t loc"
73.Ft int
76.Fn isgraph "int c"
74.Fn isgraph_l "int c" "locale_t loc"
75.Ft int
78.Fn ishexnumber "int c"
76.Fn ishexnumber_l "int c" "locale_t loc"
77.Ft int
80.Fn isideogram "int c"
78.Fn isideogram_l "int c" "locale_t loc"
79.Ft int
82.Fn islower "int c"
80.Fn islower_l "int c" "locale_t loc"
81.Ft int
84.Fn isnumber "int c"
82.Fn isnumber_l "int c" "locale_t loc"
83.Ft int
86.Fn isphonogram "int c"
84.Fn isphonogram_l "int c" "locale_t loc"
85.Ft int
88.Fn isspecial "int c"
86.Fn isspecial_l "int c" "locale_t loc"
87.Ft int
90.Fn isprint "int c"
88.Fn isprint_l "int c" "locale_t loc"
89.Ft int
92.Fn ispunct "int c"
90.Fn ispunct_l "int c" "locale_t loc"
91.Ft int
94.Fn isrune "int c"
92.Fn isrune_l "int c" "locale_t loc"
93.Ft int
96.Fn isspace "int c"
94.Fn isspace_l "int c" "locale_t loc"
95.Ft int
98.Fn isupper "int c"
96.Fn isupper_l "int c" "locale_t loc"
97.Ft int
100.Fn isxdigit "int c"
98.Fn isxdigit_l "int c" "locale_t loc"
99.Ft int
102.Fn toascii "int c"
100.Fn tolower_l "int c" "locale_t loc"
101.Ft int
104.Fn tolower "int c"
105.Ft int
106.Fn toupper "int c"
102.Fn toupper_l "int c" "locale_t loc"
103.Sh DESCRIPTION
104The above functions perform character tests and conversions on the integer
109.Fa c .
110They are available as macros, defined in the include file
105.Fa c
106in the locale
107.Fa loc .
108They behave in the same way as the versions without the _l suffix, but use the
109specified locale rather than the global or per-thread locale.
110.In ctype.h ,
111or as true functions in the C library.
112See the specific manual pages for more information.
113.Sh SEE ALSO
114.Xr digittoint 3 ,
115.Xr isalnum 3 ,
116.Xr isalpha 3 ,
117.Xr isascii 3 ,

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124.Xr isphonogram 3 ,
125.Xr isprint 3 ,
126.Xr ispunct 3 ,
127.Xr isrune 3 ,
128.Xr isspace 3 ,
129.Xr isspecial 3 ,
130.Xr isupper 3 ,
131.Xr isxdigit 3 ,
133.Xr toascii 3 ,
132.Xr tolower 3 ,
133.Xr toupper 3 ,
134.Xr wctype 3 ,
137.Xr ascii 7
135.Xr xlocale 3
136.Sh STANDARDS
139These functions, except for
140.Fn digittoint ,
141.Fn isascii ,
142.Fn ishexnumber ,
143.Fn isideogram ,
144.Fn isnumber ,
145.Fn isphonogram ,
146.Fn isrune ,
147.Fn isspecial
148and
149.Fn toascii ,
150conform to
151.St -isoC .
137These functions conform to
138.St -p1003.1-2008 .