641 	u16 y_err = 0;  in filter_point()  local
651 	y_err = y > y_old[id] ? (y - y_old[id]) : (y_old[id] - y);  in filter_point()
653 …if ((x_err > FILTER_MAX && y_err > FILTER_MAX / 3) || (x_err > FILTER_MAX / 3 && y_err > FILTER_MA…  in filter_point()
655 		filter_step_y = y_err;  in filter_point()
659 		if (y_err > FILTER_MAX)  in filter_point()
660 			filter_step_y = y_err;  in filter_point()
663 	if (x_err <= 2 * FILTER_MAX && y_err <= 2 * FILTER_MAX) {  in filter_point()
666 	} else if (x_err <= 3 * FILTER_MAX && y_err <= 3 * FILTER_MAX) {  in filter_point()
669 	} else if (x_err <= 4 * FILTER_MAX && y_err <= 4 * FILTER_MAX) {  in filter_point()
684 	u16 y_err = 0;  in record_point()  local
702 		y_err = y - y_old[id];  in record_point()
704 		y_err = y_old[id] - y;  in record_point()
706 	if ((x_err > 3 && y_err > 1) || (x_err > 1 && y_err > 3)) {  in record_point()
718 		if (y_err > 3) {  in record_point()