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units.h
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1 /*
2 * Copyright Tim (xtimor@gmail.com)
3 *
4 * NMEA library is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU Lesser General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU Lesser General Public License for more details.
13 *
14 * You should have received a copy of the GNU Lesser General Public License
15 * along with this program. If not, see <http://www.gnu.org/licenses/>
16 */
17 /*
18  *
19  * NMEA library
20  * URL: http://nmea.sourceforge.net
21  * Author: Tim (xtimor@gmail.com)
22  * Licence: http://www.gnu.org/licenses/lgpl.html
23  * $Id: units.h 4 2007-08-27 13:11:03Z xtimor $
24  *
25  */
26 
27 #ifndef __NMEA_UNITS_H__
28 #define __NMEA_UNITS_H__
29 
30 #include "config.h"
31 
32 /*
33  * Distance units
34  */
35 
36 #define NMEA_TUD_YARDS (1.0936)
37 #define NMEA_TUD_KNOTS (1.852)
38 #define NMEA_TUD_MILES (1.609)
40 /*
41  * Speed units
42  */
43 
44 #define NMEA_TUS_MS (3.6)
46 #endif /* __NMEA_UNITS_H__ */