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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: .\"
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
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                     27: .\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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                     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: .\"
                     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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