mspeed 155 core/gps.c static t_rectangular mspeed; // actual position of regressionin m/s (N/E) mspeed 284 core/gps.c geo2rect (&speed, &mspeed, ist.lat_w); // Convert to m/s mspeed 285 core/gps.c rect2polar (&mspeed, &pspeed); // convert to direction and speed.