units.h 726 B

123456789101112131415161718192021222324252627282930
  1. /*
  2. *
  3. * NMEA library
  4. * URL: http://nmea.sourceforge.net
  5. * Author: Tim (xtimor@gmail.com)
  6. * Licence: http://www.gnu.org/licenses/lgpl.html
  7. * $Id: units.h 4 2007-08-27 13:11:03Z xtimor $
  8. *
  9. */
  10. #ifndef __NMEA_UNITS_H__
  11. #define __NMEA_UNITS_H__
  12. #include "config.h"
  13. /*
  14. * Distance units
  15. */
  16. #define NMEA_TUD_YARDS (1.0936) /**< Yeards, meter * NMEA_TUD_YARDS = yard */
  17. #define NMEA_TUD_KNOTS (1.852) /**< Knots, kilometer / NMEA_TUD_KNOTS = knot */
  18. #define NMEA_TUD_MILES (1.609) /**< Miles, kilometer / NMEA_TUD_MILES = mile */
  19. /*
  20. * Speed units
  21. */
  22. #define NMEA_TUS_MS (3.6) /**< Meters per seconds, (k/h) / NMEA_TUS_MS= (m/s) */
  23. #endif /* __NMEA_UNITS_H__ */