[bug #68123] det is not accurate

Please use the bug tracker to post updates to a bug report.  The mailing list is intended as a read-only notification stream.  Info posted to this mailing list address won't appear in the tracker database where it is most useful.

URL:
  <https://savannah.gnu.org/bugs/?68123>

                 Summary: det is not accurate
                   Group: GNU Octave
               Submitter: asdfghjkl
               Submitted: Thu 05 Mar 2026 05:20:14 PM UTC
                Category: None
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: None
                  Status: None
             Assigned to: None
         Originator Name:
        Originator Email:
             Open/Closed: Open
         Discussion Lock: Unlocked
                 Release: 10.3.0
        Operating System: GNU/Linux
           Fixed Release: None
         Planned Release: None


    _______________________________________________________

Follow-up Comments:


-------------------------------------------------------
Date: Thu 05 Mar 2026 05:20:14 PM UTC By: Anonymous

>> A = [
 689248728  -83865684  738325644
 188686008  -22958740  202121108
  89012448  -10830764   95350444 ];

>> det (A)
ans = 106686724.3049675

The correct answer is 106686720.

The discrepancy 4.3049675 is a relative discrepancy of 4e-8, is not accurate
compared to eps = 2.22e-16.









    _______________________________________________________

Reply to this item at:

  <https://savannah.gnu.org/bugs/?68123>

_______________________________________________
Message sent via Savannah
https://savannah.gnu.org/

-----BEGIN PGP SIGNATURE-----

iHUEABYIAB0WIQQk97aszIMMAvLLwm6qLAuaBUf3TgUCaam7VAAKCRCqLAuaBUf3
TnCtAP9klLOVrHOy6KJxclIgsbA1PrCvkiV+5Z43SDd5wTGUDgD/UpCFzJsyOblz
f84S/OFtMbyFtV0i8wlApAm+s4ucQQM=
=eo+t
-----END PGP SIGNATURE-----