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

get_len_position() double get_len_position ( double  value, double  hist1, double  hist2  )