[R] Using LAPACK in C-code to be loaded in R - getting-started-help

[Prof Brian Ripley]

Are you talking about LAPACK (title) or LINPACK (body)?

On Mon, 20 Feb 2006, Søren Højsgaard wrote:

> I want to speed up computations (involving matrices) by writing some 
> C-code to be loaded. In the C-code, I need to invert matrices etc. As 
> I've understood the "writing R extensions" doc, I can use use #include 
> <R_ext/Linpack.h> in my .c-file and get access to linpack's facilities 
> within my C-code.
>
> Is that correct?

Only for some of the functions listed in that file: please consult it.

> If so, can anyone point me to examples on how this is actually done in 
> practice?

On CRAN,

Linpack: RandomFields fracdiff glmmML mgcv
LAPACK: lots, e.g, MNP kernlab knncat rmetasim supclust

-- 
Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
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