[Boost-users] [conversion] RoundEven odd behaviour

Hello All I tried to use boost numeric conversion library and faced with strange feature of RoundEven that I can not comprehend or find expanation in the documentation. First I thought that this policy rounds float number to nearest integer, because RoundEven::round_style::value == std::round_to_nearest. But! This policy for example returns 2.0 for 3.0 as argument! cout << boost::numeric::converter< int , double , boost::numeric::conversion_traits , boost::numeric::silent_overflow_handler , boost::numeric::RoundEven<double>

::convert(2.9) << endl;

cout << boost::numeric::converter< int , double , boost::numeric::conversion_traits , boost::numeric::silent_overflow_handler , boost::numeric::RoundEven<double>

::convert(3.0) << endl;

cout << boost::numeric::converter< int , double , boost::numeric::conversion_traits , boost::numeric::silent_overflow_handler , boost::numeric::RoundEven<double>

::convert(3.1) << endl;

Output of the program above will be: 3 2 3 What is the cause of such strange behaviour? This is a bug or there is something that I don't understand? -- Vyacheslav E. Andrejev System Architect, Excelsior, LLC