aggstate_set_extra DatumGetSkipListP ensure_same_skiplist_subtype PG_GETARG_SKIPLIST_P PG_RETURN_SKIPLIST_P skiplist_headval skiplist_make skiplist_splice skiplist_temporal_values skiplist_values SkipListPGetDatum

ensure_same_skiplist_subtype() bool ensure_same_skiplist_subtype ( SkipList *  state, uint8  subtype  )