bugs in eigs?

David Bateman dbateman at dbateman.org
Tue Feb 3 14:22:19 CST 2009


Søren Hauberg wrote:
> Hi
>
> With a checkout from today I see
>
> octave:1> test eigs
>   ***** testif HAVE_ARPACK
>  d1 = eigs (A, k);
>  assert (abs(d1), abs(d0(end:-1:(end-k+1))), 1e-12);
> !!!!! test failed
> eigs: error -8 in znaupdoctave:2> 
>
> Does this mean I have some dependencies installed wrongly, or is it a
> bug in Octave?
>
> Søren
>
>
> _______________________________________________
> Bug-octave mailing list
> Bug-octave at octave.org
> https://www-old.cae.wisc.edu/mailman/listinfo/bug-octave
>   
-8 is the return error from arpack for a error signalled in the 
underlying lapack eigenvalue calculation on the ritz matrix.. Have you 
changed your lapack?

D.

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David Bateman                                dbateman at dbateman.org
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