[Octave-bug-tracker] [bug #61205] [octave forge] (control) Test failures with LAPACK 3.10.0

[Sébastien Villemot]

URL:
  <https://savannah.gnu.org/bugs/?61205>

                 Summary: [octave forge] (control) Test failures with LAPACK
3.10.0
                 Project: GNU Octave
            Submitted by: svillemot
            Submitted on: mer. 22 sept. 2021 10:09:03 UTC
                Category: Octave Forge Package
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: None
                  Status: None
             Assigned to: None
         Originator Name: 
        Originator Email: 
             Open/Closed: Open
                 Release: other
         Discussion Lock: Any
        Operating System: Any

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Details:

Hi,

Six tests of the control package fail after the upgrade to LAPACK 3.10.0:
- one test in btaconred.m
- one test in btamodred.m
- three tests in moen4.m
- one test in hnamodred.m

I attach a Debian build log that shows all the test results.

Those are apparently only sign changes, most likely due to the fact that
LAPACK returns another (but still) valid solution than the one that is
hardcoded in the test cases. In particular, I have observed that in LAPACK
3.10.0 the SVD routines can return singular vectors with the opposite sign
compared to LAPACK 3.9.




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File Attachments:


-------------------------------------------------------
Date: mer. 22 sept. 2021 10:09:03 UTC  Name:
octave-control_3.3.1-2_amd64.build  Size: 316kio   By: svillemot

<http://savannah.gnu.org/bugs/download.php?file_id=51952>

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