| 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) |