[SciPy-dev] band matrix wrapping ready for inclusion

Arnd Baecker arnd.baecker at web.de
Tue Jun 27 01:23:21 CDT 2006


as I have not recieved any feedback, would anyone mind
if we just do the changes and commit the code to svn?

Best, Arnd

On Fri, 16 Jun 2006, Arnd Baecker wrote:

> Hi,
> thanks to Johannes Loehnert and Waltraut Wustmann
> the previous f2py wrappers have been supplied with many
> more unit-tests, documentation and wrappers
> for hermitian band matrices.
> The wrappers deals with:
>   <s,d>sbev       <s,d>sbevd      <s,d>sbevx
>   <c,z>hbevd      <c,z>hbevx
>   <s,d,c,z>gbtrf  <s,d,c,z>gbtrs
>   <s,d>lamch
> In addition front-end routines `eig_banded`, `eigvals_banded`
> for inclusion in  Lib/linalg/decomp.py are provided.
> The current version is at
>   http://www.physik.tu-dresden.de/~baecker/python/band.zip
> Pearu, it would be nice if you could have a look
> at the wrappers and let us know whether anything needs to
> be done/improved.
> If you prefer I can do a commit (after following the steps in the TODO),
> but I would like to get your ok first
> (I also don't mind if you prefer to make the corresponding
> changes ;-).
> Hope the result is useful not just for us but also to others.
> In addition, the contents of band.zip might be helpful
> as an example on how to provide wrappers
> for other LAPACK routines.
> Best, Arnd
> P.S.: In the long run one could also think of adding code
> for performing inverse iteration, but this might also fit
> into the sparse matrix department.
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