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/*
FUNCTION
<<islower>>---lower-case character predicate
 
INDEX
islower
 
ANSI_SYNOPSIS
#include <ctype.h>
int islower(int <[c]>);
 
TRAD_SYNOPSIS
#include <ctype.h>
int islower(<[c]>);
 
DESCRIPTION
<<islower>> is a macro which classifies ASCII integer values by table
lookup.  It is a predicate returning non-zero for minuscules
(lower-case alphabetic 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 islower>>'.
 
RETURNS
<<islower>> returns non-zero if <[c]> is a lower case letter (<<a>>--<<z>>).
 
PORTABILITY
<<islower>> is ANSI C.
 
No supporting OS subroutines are required.
*/
#include <_ansi.h>
#include <ctype.h>
 
#undef islower
int
_DEFUN(islower,(c),int c)
{
	return((_ctype_ + 1)[c] & _L);
}