0,0 → 1,44 |
|
/* |
FUNCTION |
<<isspace>>---whitespace character predicate |
|
INDEX |
isspace |
|
ANSI_SYNOPSIS |
#include <ctype.h> |
int isspace(int <[c]>); |
|
TRAD_SYNOPSIS |
#include <ctype.h> |
int isspace(<[c]>); |
|
DESCRIPTION |
<<isspace>> is a macro which classifies ASCII integer values by table |
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. |
|
You can use a compiled subroutine instead of the macro definition by |
undefining the macro using `<<#undef isspace>>'. |
|
RETURNS |
<<isspace>> returns non-zero if <[c]> is a space, tab, carriage return, new |
line, vertical tab, or formfeed (<<0x09>>--<<0x0D>>, <<0x20>>). |
|
PORTABILITY |
<<isspace>> is ANSI C. |
|
No supporting OS subroutines are required. |
*/ |
#include <_ansi.h> |
#include <ctype.h> |
|
|
#undef isspace |
int |
_DEFUN(isspace,(c),int c) |
{ |
return(__ctype_ptr__[c+1] & _S); |
} |
|