public boolean isClear(int index)
	{
		/*
		 * Similar to the is set only flip the mask and use the NOR function.
		 */
		if(index >= 32){
			return true;
		}
		int mask = 0x1;
		mask = mask << index;
		mask = ~mask;
		return (~(mask | bits) != 0x0);
	}