Hi ! I am currently doing some experiments with boost::interval and self-defined base types. I have problems with the rounding modes. I read the according documentation about the rounding (and checking) stuff, but unfortunately I did not unterstand it completely. So, what I want for now is to use intervals without any special rounding mode. Maybe I will implement correct rounding sometimes later... I expect I have to declare the interval type as follows: using namespace boost::numeric; using namespace interval_lib; // mutable_t is my base type typedef interval I; The problem is: what to put in [policy_no_rounding] ? Regards, Sven -- Sven Heithecker GPG Fingerprint: 527F 06C2 BF51 96CE DFF7 CC89 1A6B DFD5 BEC2 02A6Hi !