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1 | /* |
2 | * Copyright (c) 1988 Mark Nudleman | |
3 | * Copyright (c) 1988 Regents of the University of California. | |
4 | * All rights reserved. | |
5 | * | |
6 | * This code is derived from software contributed to Berkeley by | |
7 | * Mark Nudleman. | |
8 | * | |
9 | * Redistribution and use in source and binary forms are permitted | |
10 | * provided that the above copyright notice and this paragraph are | |
11 | * duplicated in all such forms and that any documentation, | |
12 | * advertising materials, and other materials related to such | |
13 | * distribution and use acknowledge that the software was developed | |
14 | * by the University of California, Berkeley. The name of the | |
15 | * University may not be used to endorse or promote products derived | |
16 | * from this software without specific prior written permission. | |
17 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR | |
18 | * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED | |
19 | * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. | |
20 | * | |
21 | * @(#)position.h 5.1 (Berkeley) %G% | |
22 | */ | |
23 | ||
24 | /* | |
25 | * Include file for interfacing to position.c modules. | |
26 | */ | |
27 | #define TOP (0) | |
28 | #define TOP_PLUS_ONE (1) | |
29 | #define BOTTOM (-1) | |
30 | #define BOTTOM_PLUS_ONE (-2) | |
31 | #define MIDDLE (-3) |