is_pipe_in_candidate_array
if (is_pipe_in_candidate_array(i, preferred_pipe_candidates, num_preferred_candidates) ||
is_pipe_in_candidate_array(i, last_resort_pipe_candidates, num_last_resort_candidates))
if (is_pipe_in_candidate_array(i, preferred_pipe_candidates, num_preferred_candidates) ||
is_pipe_in_candidate_array(i, last_resort_pipe_candidates, num_last_resort_candidates))