| 1 | /* |
| 2 | * Copyright (c) 1980 Regents of the University of California. |
| 3 | * All rights reserved. |
| 4 | * |
| 5 | * Redistribution and use in source and binary forms are permitted |
| 6 | * provided that the above copyright notice and this paragraph are |
| 7 | * duplicated in all such forms and that any documentation, |
| 8 | * advertising materials, and other materials related to such |
| 9 | * distribution and use acknowledge that the software was developed |
| 10 | * by the University of California, Berkeley. The name of the |
| 11 | * University may not be used to endorse or promote products derived |
| 12 | * from this software without specific prior written permission. |
| 13 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR |
| 14 | * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED |
| 15 | * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. |
| 16 | */ |
| 17 | |
| 18 | #ifndef lint |
| 19 | static char sccsid[] = "@(#)getcodi.c 5.3 (Berkeley) %G%"; |
| 20 | #endif /* not lint */ |
| 21 | |
| 22 | # include "getpar.h" |
| 23 | |
| 24 | /* |
| 25 | ** get course and distance |
| 26 | ** |
| 27 | ** The user is asked for a course and distance. This is used by |
| 28 | ** move, impulse, and some of the computer functions. |
| 29 | ** |
| 30 | ** The return value is zero for success, one for an invalid input |
| 31 | ** (meaning to drop the request). |
| 32 | */ |
| 33 | |
| 34 | getcodi(co, di) |
| 35 | int *co; |
| 36 | double *di; |
| 37 | { |
| 38 | |
| 39 | *co = getintpar("Course"); |
| 40 | |
| 41 | /* course must be in the interval [0, 360] */ |
| 42 | if (*co < 0 || *co > 360) |
| 43 | return (1); |
| 44 | *di = getfltpar("Distance"); |
| 45 | |
| 46 | /* distance must be in the interval [0, 15] */ |
| 47 | if (*di <= 0.0 || *di > 15.0) |
| 48 | return (1); |
| 49 | |
| 50 | /* good return */ |
| 51 | return (0); |
| 52 | } |