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 get_len_position length_hist_bsearch period_analyze periodset_analyze timestampset_analyze

calc_length_hist_frac() double calc_length_hist_frac ( Datum *  length_hist_values, int  length_hist_nvalues, double  length1, double  length2, bool  equal  )