Annotation of src/lib/libc/gen/isblank.3, Revision 1.13
1.13 ! apb 1: .\" $NetBSD: isblank.3,v 1.12 2007/01/18 08:35:07 rillig Exp $
1.3 cgd 2: .\"
1.1 jtc 3: .\" Copyright (c) 1991 The Regents of the University of California.
4: .\" All rights reserved.
5: .\"
6: .\" This code is derived from software contributed to Berkeley by
7: .\" the American National Standards Committee X3, on Information
8: .\" Processing Systems.
9: .\"
10: .\" Redistribution and use in source and binary forms, with or without
11: .\" modification, are permitted provided that the following conditions
12: .\" are met:
13: .\" 1. Redistributions of source code must retain the above copyright
14: .\" notice, this list of conditions and the following disclaimer.
15: .\" 2. Redistributions in binary form must reproduce the above copyright
16: .\" notice, this list of conditions and the following disclaimer in the
17: .\" documentation and/or other materials provided with the distribution.
1.10 agc 18: .\" 3. Neither the name of the University nor the names of its contributors
1.1 jtc 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: .\"
1.3 cgd 34: .\" @(#)isspace.3 5.3 (Berkeley) 7/31/91
1.1 jtc 35: .\"
1.13 ! apb 36: .Dd April 17, 2008
1.2 jtc 37: .Dt ISBLANK 3
1.1 jtc 38: .Os
39: .Sh NAME
40: .Nm isblank
41: .Nd blank-space character test
1.4 perry 42: .Sh LIBRARY
43: .Lb libc
1.1 jtc 44: .Sh SYNOPSIS
1.9 wiz 45: .In ctype.h
1.1 jtc 46: .Ft int
47: .Fn isblank "int c"
48: .Sh DESCRIPTION
49: The
50: .Fn isblank
51: function tests for the standard blank-space characters.
52: The standard blank-space characters are the following:
53: .Pp
54: .Bl -tag -width xxxxx -offset indent -compact
55: .It Sq \0
56: Space character.
57: .It Li \et
58: Horizontal tab.
59: .El
60: .Pp
1.5 wiz 61: In the
1.1 jtc 62: .Em ``C''
63: locale,
64: .Fn isblank
65: returns true only for the standard blank-space characters.
66: .Sh RETURN VALUES
67: The
68: .Fn isblank
1.11 rillig 69: function returns zero if the character tests false and
1.1 jtc 70: returns non-zero if the character tests true.
71: .Sh SEE ALSO
1.12 rillig 72: .Xr ctype 3 ,
1.1 jtc 73: .Xr isalnum 3 ,
74: .Xr isalpha 3 ,
1.6 wiz 75: .Xr isascii 3 ,
1.1 jtc 76: .Xr iscntrl 3 ,
77: .Xr isdigit 3 ,
78: .Xr isgraph 3 ,
79: .Xr islower 3 ,
80: .Xr isprint 3 ,
81: .Xr ispunct 3 ,
82: .Xr isspace 3 ,
83: .Xr isupper 3 ,
84: .Xr isxdigit 3 ,
1.6 wiz 85: .Xr stdio 3 ,
1.1 jtc 86: .Xr toascii 3 ,
87: .Xr tolower 3 ,
88: .Xr toupper 3 ,
89: .Xr ascii 7
1.8 yamt 90: .Sh CAVEATS
91: The argument to
92: .Fn isblank
93: must be
94: .Dv EOF
95: or representable as an
1.13 ! apb 96: .Vt unsigned char ;
1.11 rillig 97: otherwise, the behavior is undefined.
1.13 ! apb 98: See the
! 99: .Sx CAVEATS
! 100: section of
! 101: .Xr ctype 3
! 102: for more details.
CVSweb <webmaster@jp.NetBSD.org>