[Boost-users] unit test and BOOST_CHECK_CLOSE

dear list, When executing a test defined by: BOOST_CHECK_CLOSE(t3.x(3), 0.0, epsilon); I get the message: difference between t3.x(3){2.34188e-17} and 0.0{0} exceeds 1e-08% where obviously the difference does not exceeds the given threshold 1e-08... What's going on ? -- thomas