This is the mail archive of the gsl-discuss@sourceware.org mailing list for the GSL project.


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]
Other format: [Raw text]

Re: unsymmetric eigenvalue update


At Tue, 13 Jun 2006 09:56:20 -0600,
> I propose adding the double-shift method to gsl (assuming it
> passes any further tests needed) which would be a perfectly
> fine eigenvalue solver (EISPACK used it for a number of years)
> until I (or someone else) can find the time to implement method 3.
> 
> Attached is the latest (final? :)) patch.

The latest patch is in sources.redhat.com CVS with some extra
cleanups.  It works well.  I modified the balance() routine to return
the diagonal scaling elements D (for computing the eigenvectors later)
and moved the memory allocation up out of hessenberg() into the
workspace.

-- 
Brian Gough


Index Nav: [Date Index] [Subject Index] [Author Index] [Thread Index]
Message Nav: [Date Prev] [Date Next] [Thread Prev] [Thread Next]