/* some useful conversion factors */

#ifndef __DISTANCE_H__
#define __DISTANCE_H__

#define METERS_TO_INCHES     ((double)1 / 0.0254)
#define MILES_TO_INCHES      ((double)5280 * 12)

#define FEET_TO_METERS       0.3048
#define MILES_TO_METERS      1609.344
#define NAUT_MILES_TO_METERS 1852.0
#define KILOMETERS_TO_METERS 1000.0

#endif /* __DISTANCE_H__ */
