FYI I just uploaded a new package qd [1] in debian that provides double-double and quad-double numerical types for f90 and c++. I have also package arprec: an arbitrary precision type for c++ and f90 but it is not yet in debian [1] http://packages.qa.debian.org/q/qd.html Best regards C. -- Debian Developer Scienfific computing packages maintainer Fingerprint = 3703 50DE 7A9F 024E 0F26 0D07 A18F B40B D4BE 1450