[Octave-bug-tracker] [bug #50546] wrong result from eigs function

[Rik]

Update of bug #50546 (project octave):

                  Status:         Patch Submitted => Fixed                  
             Open/Closed:                    Open => Closed                 
        Operating System:       Microsoft Windows => Any                    

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Follow-up Comment #4:

I tested the eigenvalues script all the way back to Octave-3.2.4 and it always
gets an absurd result for the last method.  I conclude that the generalized
problem has been incorrect in Octave for years.  I pushed the patch to the
stable branch (http://hg.savannah.gnu.org/hgweb/octave/rev/3b2dbed26762) and
it will be a part of the next bug fix release 4.2.2.

When I run the eigenvalues.m test script I find that the methods have very
different accuracy.


error = 8.4315e-07
error = 9.1345e-13
error = 2.7325e-11


Is this expected and acceptable, or is there something else that needs to
change in Octave so the different methods are roughly equal in accuracy?




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