Re: [Lapackpp-devel] (Real) double QR factorization

[Christian S. <sti...@tu...>]

Quoting Brian White <bw...@ca...>:
> I have need for a real QR factorization.  i.e., the analog of
> LaGenQRFactComplex::generateQ_IP from matrix/src/gfqrc.cc.  I don't
> believe this functionality is redundant with what exists, since
> LaGenMatDouble and LaGenMatComplex have no inheritance relation.  (...)
>
> In any case, I have done this for an old version of lapackpp.  It is
> straightforward and amounts to creating gfqrd.cc from gfqrc.cc, in which
> LaGenMatComplex -> LaGenMatDouble and the complex Fortran routines
> (zgeqrf, zungqr, zunmqr) -> the real routines (dgeqrf, dorgqr, dormqr).
>
> Is there interest in adding this to the distribution?

Yes, if you already have the code, you are very welcome to contribute  
this to the project. If you're adding new functionality, and this  
functionality exists as separate lapack functions like dgeqrf etc.,  
you can just go ahead and add this to the up-to-date lapackpp.

>  Years ago, I was
> listed as a developer, but would rather not make such a substantial change
> behind Christian's back.  Please let me know if there is interest in this
> extension and, if so, how to proceed (e.g., provide patches to version
> 2.5.2, directly access cvs, etc.).

If you still have the sourceforce account, you can directly submit  
your code to SVN (no longer CVS). That would be the easiest way to  
contribute.

Regards,

Christian