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/*

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_ + 1)[c] & _S);

}