getcodi.c revision 1.5 
1/*	$OpenBSD: getcodi.c,v 1.5 2016/01/07 14:37:51 mestre Exp $	*/
2/*	$NetBSD: getcodi.c,v 1.3 1995/04/22 10:58:55 cgd Exp $	*/
3
4/*
5 * Copyright (c) 1980, 1993
6 *	The Regents of the University of California.  All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 * 3. Neither the name of the University nor the names of its contributors
17 *    may be used to endorse or promote products derived from this software
18 *    without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 */
32
33#include "getpar.h"
34#include "trek.h"
35
36/*
37**  get course and distance
38**
39**	The user is asked for a course and distance.  This is used by
40**	move, impulse, and some of the computer functions.
41**
42**	The return value is zero for success, one for an invalid input
43**	(meaning to drop the request).
44*/
45
46int
47getcodi(int *co, double *di)
48{
49	*co = getintpar("Course");
50
51	/* course must be in the interval [0, 360] */
52	if (*co < 0 || *co > 360)
53		return (1);
54	*di = getfltpar("Distance");
55
56	/* distance must be in the interval [0, 15] */
57	if (*di <= 0.0 || *di > 15.0)
58		return (1);
59
60	/* good return */
61	return (0);
62}
63