Public bug reported: See upstream bug report here: https://github.com/xianyi/OpenBLAS/issues/484
In brief, drotmg inverts the order of the elements of the first column of DH when DFLAG is 1.0 (diagonal). $ lsb_release -rd Description: Ubuntu 14.04.1 LTS Release: 14.04 Version of libopenblas: 0.2.8-6ubuntu1 Failing code is attached to the upstream bug linked above. ** Affects: openblas (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1407819 Title: drotmg gives incorrect result when result is DIAGONAL with non-zero first column of H To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/openblas/+bug/1407819/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs