Re: [Help-gsl] Obtaining an LQ decomposition without performing a transpose

[Brian Gough]

At Wed, 28 Sep 2011 16:27:44 -0500,
Rhys Ulerich wrote:
> 
> Hi all,
> 
> Dumb question-- I'd like an LQ factorization from GSL's linear algebra
> routines.  One can get an LQ by computing a QR on A^T.  Am I correct
> in that, as the public APIs stand, there's no way to compute a QR on
> A^T without performing an honest-to-god transpose of A's data?

There is an LQ decomposition in the code (see e.g. gsl_linalg.h)
Somehow it's not documented though. Not sure why.

-- 
Brian Gough