1 /* 2 * Copyright (c) 1988 Mark Nudleman 3 * Copyright (c) 1988 Regents of the University of California. 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms are permitted 7 * provided that the above copyright notice and this paragraph are 8 * duplicated in all such forms and that any documentation, 9 * advertising materials, and other materials related to such 10 * distribution and use acknowledge that the software was developed 11 * by Mark Nudleman and the University of California, Berkeley. The 12 * name of Mark Nudleman or the 13 * University may not be used to endorse or promote products derived 14 * from this software without specific prior written permission. 15 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED 17 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. 18 * 19 * @(#)position.h 5.2 (Berkeley) 07/25/88 20 */ 21 22 /* 23 * Include file for interfacing to position.c modules. 24 */ 25 #define TOP (0) 26 #define TOP_PLUS_ONE (1) 27 #define BOTTOM (-1) 28 #define BOTTOM_PLUS_ONE (-2) 29 #define MIDDLE (-3) 30