#include	"defs.h"

/*
 *
 * S. R. Bourne
 * Bell Telephone Laboratories
 *
 */
CHAR	bitbit[] = {1,2,4,8,16,32,64,128};
CHAR	bitmsk[] = {~1,~2,~4,~8,~16,~32,~64,~128};

setbit(base, offset)
	CHAR	base[];
	INT	offset;
{
	base[offset>>3] |= bitbit[offset&7];
}

clrbit(base, offset)
	CHAR	base[];
	INT	offset;
{
	base[offset>>3] &= bitmsk[offset&7];
}

tstbit(base, offset)
	CHAR	base[];
	INT	offset;
{
	return(base[offset>>3]&bitbit[offset&7]);
}