alpha              87 core/gps.c         double alpha;   // radian
alpha             105 core/gps.c         p->alpha = arctan2 (r->east, r->north);
alpha             111 core/gps.c         r->east = sin(p->alpha) * p->delta;
alpha             112 core/gps.c         r->north= cos(p->alpha) * p->delta;
alpha             117 core/gps.c     radian2deg (double alpha) {
alpha             118 core/gps.c         return (int) (alpha * RHO + 360.5) % 360;
alpha             286 core/gps.c         direction = radian2deg  (pspeed.alpha);                                 // get direction
alpha             290 core/gps.c         peil    = radian2deg    (pdelta.alpha);                                 // Bearing to destination
alpha             291 core/gps.c         angle  = radian2deg     (pdelta.alpha-pspeed.alpha);                    // Angle relative to the direction of march