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_period_hist_selectivity() double calc_period_hist_selectivity ( VariableStatData *  vardata, const Period *  constval, CachedOp  cachedOp  )