package ProGAL.dataStructures;

public interface SortTool {
	public final static int COMP_LESS  = -1;
	public final static int COMP_EQUAL =  0;
	public final static int COMP_GRTR  =  1;
	
	IllegalArgumentException err1 = new IllegalArgumentException("incompatible objects in sort");
	
	int compare(Object x1, Object x2);
}