unsymm eigenvector patch

[Brian Gough]

Patrick Alken wrote:
>   I've attached a patch which implements eigenvector support for
> real nonsymmetric matrices. The algorithm used is backsubstitution
> to find eigenvectors of the Schur form, followed by backtransformation
> by the Schur vectors. I followed the lapack code closely (dtrevc),
> so this implementation handles degeneracies very well.

Thanks, I have committed the patches to the sourceware cvs. Good work.

-- 
Brian Gough

Network Theory Ltd,
Publishing the GSL Manual - http://www.network-theory.co.uk/gsl/manual/