gpstypes.h

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#ifndef XGPSTYPES_H
#define XGPSTYPES_H

#include <float.h>

typedef double lat_t;
typedef double lng_t;
typedef double alt_t;
typedef float acc_t;

/*
these are theoretical minima and maxima, the real ones depends on the storage size,
but the these values fit into which ever strage class is chosen.
*/

#define LAT_MAX (90.0)
#define LAT_MIN (-90.0)
#define LNG_MAX (180.0)
#define LNG_MIN (-180.0)
#define ALT_MAX (9000.0)
#define ALT_MIN (-4000.0)

/* minima and maxima according to the gps spec */
#define LAT_GPS_SPEC_MAX (178.435455)
#define LAT_GPS_SPEC_MIN (LAT_MIN)
#define LNG_GPS_SPEC_MAX (356.870911)
#define LNG_GPS_SPEC_MIN (LNG_MIN)
#define ALT_GPS_SPEC_MAX (9107.1)
#define ALT_GPS_SPEC_MIN (ALT_MIN)

/* minima and maxima of this implementation */
#define LAT_REAL_MAX DBL_MAX
#define LAT_REAL_MIN DBL_MIN
#define LNG_REAL_MAX DBL_MAX
#define LNG_REAL_MIN DBL_MIN
#define ALT_REAL_MAX DBL_MAX
#define ALT_REAL_MIN DBL_MIN

#endif /* XGPSTYPES_H */