[Octave-bug-tracker] [bug #60924] DNAUPD did not find any eigenvalues to sufficient accuracy

[Rik]

Update of bug #60924 (project octave):

                  Status:               Confirmed => Fixed                  
             Open/Closed:                    Open => Closed                 
                 Release:                   6.2.0 => dev                    

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Follow-up Comment #12:

This bug was caused by a typo in the code.  The variable "errnum" was desired,
but the programmer wrote "errno" instead.  I fixed that so that the "This
should not happen" error is not emitted.

I also made the error message more informative.  For the sample matrix in this
issue report the error message is now


error: eigs: error in dneupd: DNAUPD did not find any eigenvalues to
sufficient accuracy.  Consider changing tolerance (TOL), maximum iterations
(MAXIT), number of Lanzcos basis vectors (P), or starting vector (V0) in OPTS
structure.


See http://hg.savannah.gnu.org/hgweb/octave/rev/e7c10a552ecc.

Marking as fixed and closing report.

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