Copyright (C) 1992, Xerox Corporation.
Copyright (C) 1992, Digital Equipment Corporation
All rights reserved.
See the files COPYRIGHT and COPYRIGHT.extras for details.
Last Modified On Tue Nov 1 10:11:04 PST 1994 By kalsow
Created by David Goldberg, goldberg@parc.xerox.com, 1992
INTERFACE Tree;
IMPORT Solve;
CONST Brand = "Tree";
TYPE T = Solve.Tree;
PROCEDURE Equal (t, u: T): BOOLEAN;
PROCEDURE Copy (t: T): T;
PROCEDURE Compare (t, u: T): [-1 .. 1];
PROCEDURE Hash (t: T; lessThan: CARDINAL): CARDINAL;
END Tree.