/* $Copyright:	$
 * Copyright (c) 1984, 1985, 1986, 1987, 1988, 1989, 1990 
 * Sequent Computer Systems, Inc.   All rights reserved.
 *  
 * This software is furnished under a license and may be used
 * only in accordance with the terms of that license and with the
 * inclusion of the above copyright notice.   This software may not
 * be provided or otherwise made available to, or used by, any
 * other person.  No title to or ownership of the software is
 * hereby transferred.
 */

/* $Header: in.c 1.1 89/03/12 $ */
#include "h00vars.h"

bool
IN(element, lower, upper, setptr)
long element;		/* element to check */
long lower;		/* lowest element of set */
long upper;		/* upper - lower of set */
SET_ELE *setptr;	/* pointer to set */
{
	register int indx;
	register int words;

	if ((indx = element - lower) < 0 || indx > upper)
		return FALSE;
	words = indx >> LG2BITSBYTE;
	indx &= MSKBITSBYTE;
	return setptr[words] & (1 << indx) ? TRUE : FALSE;
}
