2000-02-17 20:39:52 +01:00
|
|
|
/*
|
|
|
|
FUNCTION
|
2016-08-15 14:21:52 +02:00
|
|
|
<<isspace>>, <<isspace_l>>---whitespace character predicate
|
2000-02-17 20:39:52 +01:00
|
|
|
|
|
|
|
INDEX
|
|
|
|
isspace
|
|
|
|
|
2016-08-15 14:21:52 +02:00
|
|
|
INDEX
|
|
|
|
isspace_l
|
|
|
|
|
2017-11-30 08:17:11 +01:00
|
|
|
SYNOPSIS
|
2000-02-17 20:39:52 +01:00
|
|
|
#include <ctype.h>
|
|
|
|
int isspace(int <[c]>);
|
|
|
|
|
2016-08-15 14:21:52 +02:00
|
|
|
#include <ctype.h>
|
|
|
|
int isspace_l(int <[c]>, locale_t <[locale]>);
|
|
|
|
|
2000-02-17 20:39:52 +01:00
|
|
|
DESCRIPTION
|
2016-08-15 14:21:52 +02:00
|
|
|
<<isspace>> is a macro which classifies singlebyte charset values by table
|
2000-02-17 20:39:52 +01:00
|
|
|
lookup. It is a predicate returning non-zero for whitespace
|
|
|
|
characters, and 0 for other characters. It is defined only when <<isascii>>(<[c]>) is true or <[c]> is EOF.
|
|
|
|
|
2016-08-15 14:21:52 +02:00
|
|
|
<<isspace_l>> is like <<isspace>> 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.
|
|
|
|
|
2000-02-17 20:39:52 +01:00
|
|
|
You can use a compiled subroutine instead of the macro definition by
|
2016-08-15 14:21:52 +02:00
|
|
|
undefining the macro using `<<#undef isspace>>' or `<<#undef isspace_l>>'.
|
2000-02-17 20:39:52 +01:00
|
|
|
|
|
|
|
RETURNS
|
2016-08-15 14:21:52 +02:00
|
|
|
<<isspace>>, <<isspace_l>> return non-zero if <[c]> is a space, tab,
|
|
|
|
carriage return, new line, vertical tab, or formfeed (<<0x09>>--<<0x0D>>,
|
|
|
|
<<0x20>>), or one of the other space characters in non-ASCII charsets.
|
2000-02-17 20:39:52 +01:00
|
|
|
|
|
|
|
PORTABILITY
|
|
|
|
<<isspace>> is ANSI C.
|
2016-08-15 14:21:52 +02:00
|
|
|
<<isspace_l>> is POSIX-1.2008.
|
2000-02-17 20:39:52 +01:00
|
|
|
|
|
|
|
No supporting OS subroutines are required.
|
|
|
|
*/
|
|
|
|
#include <_ansi.h>
|
|
|
|
#include <ctype.h>
|
|
|
|
|
|
|
|
|
|
|
|
#undef isspace
|
|
|
|
int
|
2017-12-04 04:43:30 +01:00
|
|
|
isspace (int c)
|
2000-02-17 20:39:52 +01:00
|
|
|
{
|
2016-07-13 16:51:33 +02:00
|
|
|
return(__CTYPE_PTR[c+1] & _S);
|
2000-02-17 20:39:52 +01:00
|
|
|
}
|