|
|
/*
|
/*
|
FUNCTION
|
FUNCTION
|
<<isspace>>---whitespace character predicate
|
<<isspace>>---whitespace character predicate
|
|
|
INDEX
|
INDEX
|
isspace
|
isspace
|
|
|
ANSI_SYNOPSIS
|
ANSI_SYNOPSIS
|
#include <ctype.h>
|
#include <ctype.h>
|
int isspace(int <[c]>);
|
int isspace(int <[c]>);
|
|
|
TRAD_SYNOPSIS
|
TRAD_SYNOPSIS
|
#include <ctype.h>
|
#include <ctype.h>
|
int isspace(<[c]>);
|
int isspace(<[c]>);
|
|
|
DESCRIPTION
|
DESCRIPTION
|
<<isspace>> is a macro which classifies ASCII integer values by table
|
<<isspace>> is a macro which classifies ASCII integer values by table
|
lookup. It is a predicate returning non-zero for whitespace
|
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.
|
characters, and 0 for other characters. It is defined only when <<isascii>>(<[c]>) is true or <[c]> is EOF.
|
|
|
You can use a compiled subroutine instead of the macro definition by
|
You can use a compiled subroutine instead of the macro definition by
|
undefining the macro using `<<#undef isspace>>'.
|
undefining the macro using `<<#undef isspace>>'.
|
|
|
RETURNS
|
RETURNS
|
<<isspace>> returns non-zero if <[c]> is a space, tab, carriage return, new
|
<<isspace>> returns non-zero if <[c]> is a space, tab, carriage return, new
|
line, vertical tab, or formfeed (<<0x09>>--<<0x0D>>, <<0x20>>).
|
line, vertical tab, or formfeed (<<0x09>>--<<0x0D>>, <<0x20>>).
|
|
|
PORTABILITY
|
PORTABILITY
|
<<isspace>> is ANSI C.
|
<<isspace>> is ANSI C.
|
|
|
No supporting OS subroutines are required.
|
No supporting OS subroutines are required.
|
*/
|
*/
|
#include <_ansi.h>
|
#include <_ansi.h>
|
#include <ctype.h>
|
#include <ctype.h>
|
|
|
|
|
#undef isspace
|
#undef isspace
|
int
|
int
|
_DEFUN(isspace,(c),int c)
|
_DEFUN(isspace,(c),int c)
|
{
|
{
|
return((_ctype_ + 1)[c] & _S);
|
return((_ctype_ + 1)[c] & _S);
|
}
|
}
|
|
|
|
|
