timestamp_to_timestampset timestampset_bbox timestampset_bbox_ptr timestampset_cmp timestampset_cmp_internal timestampset_constructor timestampset_copy timestampset_end_timestamp timestampset_eq timestampset_eq_internal timestampset_find_timestamp timestampset_ge timestampset_gt timestampset_in timestampset_le timestampset_lt timestampset_make timestampset_make_free timestampset_mem_size timestampset_ne timestampset_ne_internal timestampset_num_timestamps timestampset_out timestampset_recv timestampset_send timestampset_shift timestampset_shift_internal timestampset_start_timestamp timestampset_time_n timestampset_timespan timestampset_timestamp_n timestampset_timestamps timestampset_timestamps_internal timestampset_to_period timestampset_to_period_internal timestampset_to_string

timestampset_lt() Datum timestampset_lt ( PG_FUNCTION_ARGS  ) Returns true if the first timestamp set value is less than the second one.