1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
|
/* Copyright (c) 2002 Thomas Fitzsimmons <fitzsim@redhat.com> */
/*
FUNCTION
<<isblank>>, <<isblank_l>>---blank character predicate
INDEX
isblank
INDEX
isblank_l
SYNOPSIS
#include <ctype.h>
int isblank(int <[c]>);
#include <ctype.h>
int isblank_l(int <[c]>, locale_t <[locale]>);
DESCRIPTION
<<isblank>> is a function which classifies singlebyte charset values by table
lookup. It is a predicate returning non-zero for blank characters, and 0
for other characters. It is defined only if <[c]> is representable as an
unsigned char or if <[c]> is EOF.
<<isblank_l>> is like <<isblank>> but performs the check based on the
locale specified by the locale object locale. If <[locale]> is
LC_GLOBAL_LOCALE or not a valid locale object, the behaviour is undefined.
RETURNS
<<isblank>>, <<isblank_l>> return non-zero if <[c]> is a blank character.
PORTABILITY
<<isblank>> is C99.
<<isblank_l>> is POSIX-1.2008.
No supporting OS subroutines are required.
*/
#define _DEFINING_ISBLANK
#include <_ansi.h>
#include <ctype.h>
int
isblank (int c)
{
return c == ' ' || c == '\t';
}
|
