Bring everything up to double

src/lib/geo/geo.c

@@ -294,23 +294,21 @@ __EXPORT int get_distance_to_arc(struct crosstrack_error_s *crosstrack_error, do
 		// calculate the position of the start and end points.  We should not be doing this often
 		// as this function generally will not be called repeatedly when we are out of the sector.
 
-		// TO DO - this is messed up and won't compile
-		float start_disp_x = radius * sinf(arc_start_bearing);
-		float start_disp_y = radius * cosf(arc_start_bearing);
-		float end_disp_x = radius * sinf(_wrapPI((double)(arc_start_bearing + arc_sweep)));
-		float end_disp_y = radius * cosf(_wrapPI((double)(arc_start_bearing + arc_sweep)));
-		float lon_start = (float)lon_now + start_disp_x / 111111.0f;
-		float lat_start = (float)lat_now + start_disp_y * cosf(lat_now) / 111111.0f;
-		float lon_end = (float)lon_now + end_disp_x / 111111.0f;
-		float lat_end = (float)lat_now + end_disp_y * cosf(lat_now) / 111111.0f;
-		float dist_to_start = get_distance_to_next_waypoint(lat_now, lon_now, lat_start, lon_start);
-		float dist_to_end = get_distance_to_next_waypoint(lat_now, lon_now, lat_end, lon_end);
+		double start_disp_x = (double)radius * sin(arc_start_bearing);
+		double start_disp_y = (double)radius * cos(arc_start_bearing);
+		double end_disp_x = (double)radius * sin(_wrapPI((double)(arc_start_bearing + arc_sweep)));
+		double end_disp_y = (double)radius * cos(_wrapPI((double)(arc_start_bearing + arc_sweep)));
+		double lon_start = lon_now + start_disp_x / 111111.0;
+		double lat_start = lat_now + start_disp_y * cos(lat_now) / 111111.0;
+		double lon_end = lon_now + end_disp_x / 111111.0;
+		double lat_end = lat_now + end_disp_y * cos(lat_now) / 111111.0;
+		double dist_to_start = get_distance_to_next_waypoint(lat_now, lon_now, lat_start, lon_start);
+		double dist_to_end = get_distance_to_next_waypoint(lat_now, lon_now, lat_end, lon_end);
 
 
 		if (dist_to_start < dist_to_end) {
 			crosstrack_error->distance = dist_to_start;
 			crosstrack_error->bearing = get_bearing_to_next_waypoint(lat_now, lon_now, lat_start, lon_start);
-
 		} else {
 			crosstrack_error->past_end = true;
 			crosstrack_error->distance = dist_to_end;