Hi, Now that the 1.31 version of Boost has been shipped, I am gradually pushing into the CVS a new version of the Interval library. The main change is the support for conversion between intervals with different base types. I am pushing it gradually in order to follow the evolution of the regression tests. It seems Borland and pre-7.1 Microsoft compilers won't support at all (there was a partial support in the previous versions of the library) the new version since they are not even able to parse the headers. On the other hand, GCC 2.95 doesn't ice anymore with this new scheme (quite strange, isn't it?). All the other compilers seem to quietly support the new version. Except for cwpro8: there is one failure (det.cpp) in the test-suite. Does this compiler have some known problems when dealing with template ordering? And is there some workaround? Regards, Guillaume