calc_length_hist_frac calc_period_hist_selectivity calc_period_hist_selectivity_adjacent calc_period_hist_selectivity_contained calc_period_hist_selectivity_contains calc_period_hist_selectivity_scalar calc_periodsel default_period_selectivity get_len_position get_period_distance get_period_position get_time_cachedop length_hist_bsearch period_rbound_bsearch periodsel

get_period_distance() static float8 get_period_distance ( PeriodBound *  bound1, PeriodBound *  bound2  ) static