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getcodi.c revision 1.4 
      1 /*	$NetBSD: getcodi.c,v 1.4 1997/10/12 21:24:49 christos Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1980, 1993
      5  *	The Regents of the University of California.  All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. All advertising materials mentioning features or use of this software
     16  *    must display the following acknowledgement:
     17  *	This product includes software developed by the University of
     18  *	California, Berkeley and its contributors.
     19  * 4. Neither the name of the University nor the names of its contributors
     20  *    may be used to endorse or promote products derived from this software
     21  *    without specific prior written permission.
     22  *
     23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     33  * SUCH DAMAGE.
     34  */
     35 
     36 #include <sys/cdefs.h>
     37 #ifndef lint
     38 #if 0
     39 static char sccsid[] = "@(#)getcodi.c	8.1 (Berkeley) 5/31/93";
     40 #else
     41 __RCSID("$NetBSD: getcodi.c,v 1.4 1997/10/12 21:24:49 christos Exp $");
     42 #endif
     43 #endif /* not lint */
     44 
     45 #include "getpar.h"
     46 #include "trek.h"
     47 
     48 /*
     49 **  get course and distance
     50 **
     51 **	The user is asked for a course and distance.  This is used by
     52 **	move, impulse, and some of the computer functions.
     53 **
     54 **	The return value is zero for success, one for an invalid input
     55 **	(meaning to drop the request).
     56 */
     57 
     58 int
     59 getcodi(co, di)
     60 int	*co;
     61 double	*di;
     62 {
     63 
     64 	*co = getintpar("Course");
     65 
     66 	/* course must be in the interval [0, 360] */
     67 	if (*co < 0 || *co > 360)
     68 		return (1);
     69 	*di = getfltpar("Distance");
     70 
     71 	/* distance must be in the interval [0, 15] */
     72 	if (*di <= 0.0 || *di > 15.0)
     73 		return (1);
     74 
     75 	/* good return */
     76 	return (0);
     77 }
     78