#define EARTH_R (6371000)
#define EARTH_C (2*M_PI*EARTH_R)
+#define NORTH 90
+#define SOUTH -90
+#define EAST 180
+#define WEST -180
/**
* Terms
void xyz2lle(gdouble x, gdouble y, gdouble z,
gdouble *lat, gdouble *lon, gdouble *elev);
+void xyz2ll(gdouble x, gdouble y, gdouble z,
+ gdouble *lat, gdouble *lon);
+
gdouble ll2m(gdouble lon_dist, gdouble lat);
gdouble distd(gdouble *a, gdouble *b);