BOOST_CHECK_EQUAL (DCPTime (1).round_up (DCPTime::HZ / 42), DCPTime (42));
BOOST_CHECK_EQUAL (DCPTime (42).round_up (DCPTime::HZ / 42), DCPTime (42));
BOOST_CHECK_EQUAL (DCPTime (43).round_up (DCPTime::HZ / 42), DCPTime (84));
BOOST_CHECK_EQUAL (DCPTime (1).round_up (DCPTime::HZ / 42), DCPTime (42));
BOOST_CHECK_EQUAL (DCPTime (42).round_up (DCPTime::HZ / 42), DCPTime (42));
BOOST_CHECK_EQUAL (DCPTime (43).round_up (DCPTime::HZ / 42), DCPTime (84));