Annotation of src/lib/libc/gen/isblank.3, Revision 1.10
1.10 ! agc 1: .\" $NetBSD: isblank.3,v 1.9 2003/04/16 13:34:37 wiz Exp $
1.3 cgd 2: .\"
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1.3 cgd 34: .\" @(#)isspace.3 5.3 (Berkeley) 7/31/91
1.1 jtc 35: .\"
36: .Dd September 14, 1993
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
69: macro returns zero if the character tests false and
70: returns non-zero if the character tests true.
71: .Sh SEE ALSO
72: .Xr isalnum 3 ,
73: .Xr isalpha 3 ,
1.6 wiz 74: .Xr isascii 3 ,
1.1 jtc 75: .Xr iscntrl 3 ,
76: .Xr isdigit 3 ,
77: .Xr isgraph 3 ,
78: .Xr islower 3 ,
79: .Xr isprint 3 ,
80: .Xr ispunct 3 ,
81: .Xr isspace 3 ,
82: .Xr isupper 3 ,
83: .Xr isxdigit 3 ,
1.6 wiz 84: .Xr stdio 3 ,
1.1 jtc 85: .Xr toascii 3 ,
86: .Xr tolower 3 ,
87: .Xr toupper 3 ,
88: .Xr ascii 7
1.8 yamt 89: .Sh CAVEATS
90: The argument to
91: .Fn isblank
92: must be
93: .Dv EOF
94: or representable as an
95: .Li unsigned char ;
96: otherwise, the result is undefined.
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