* For information about this program, contact Blair MacIntyre * (bm@cs.columbia.edu) or Steven Feiner (feiner@cs.columbia.edu) * at the Computer Science Dept., Columbia University, * 1214 Amsterdam Ave. Mailstop 0401, New York, NY, 10027. * * Copyright (C) 1995, 1996 by The Trustees of Columbia University in the * City of New York. Blair MacIntyre, Computer Science Department. * * This file is released under the same conditions as Pickle.m3. See COPYRIGHT. *

INTERFACE PackingTypeCode;

IMPORT Word;

TYPE T = RECORD from, to, tc: Word.T END;

CONST Brand = "Packing Typecode";

PROCEDURE Equal(a, b: T): BOOLEAN;

Return a = b.

PROCEDURE Hash(a: T): Word.T;

Return a.

PROCEDURE Compare(a, b: T): [-1..1];

Return -1 if a < b, 0 if a = b, or +1 if a > b.

END PackingTypeCode.