aggstate_set_extra ElemType period_agg SKIPLIST_GROW skiplist_headval SKIPLIST_INITIAL_CAPACITY SKIPLIST_INITIAL_FREELIST skiplist_make SKIPLIST_MAXLEVEL skiplist_splice skiplist_values tagg_deserialize tagg_serialize timestamp_agg tinstant_tagg tsequence_tagg

timestamp_agg() TimestampTz* timestamp_agg ( TimestampTz *  times1, int  count1, TimestampTz *  times2, int  count2, int *  newcount  )