278 	s16 start_x, end_x, start_y, end_y, found_x = -1;  in scan_r2l_t2b()  local
283 	end_x = field->p1.x;  in scan_r2l_t2b()
293 	if (w > LEN(start_x, end_x) || h > LEN(end_y, start_y))  in scan_r2l_t2b()
301 	if (start_x < end_x)  in scan_r2l_t2b()
306 		for (x = start_x; x >= end_x; x -= align) {  in scan_r2l_t2b()
316 				end_x = x + 1;  in scan_r2l_t2b()
352 	s16 start_x, end_x, start_y, end_y, found_x = -1;  in scan_l2r_t2b()  local
357 	end_x = field->p1.x;  in scan_l2r_t2b()
367 	if (w > LEN(end_x, start_x) || h > LEN(end_y, start_y))  in scan_l2r_t2b()
373 	if (w > LEN(end_x, start_x))  in scan_l2r_t2b()
377 	end_x = end_x - w + 1; /* + 1 to be inclusive */  in scan_l2r_t2b()
382 		for (x = start_x; x <= end_x; x += align) {  in scan_l2r_t2b()
391 				end_x = x - 1;  in scan_l2r_t2b()