R help - Feb 2006 - Using LAPACK in C-code to be loaded in R - getting-started-help

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?
 
If so, can anyone point me to examples on how this is actually done in practice?
 
Best regards
S??ren

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

On Mon, 20 Feb 2006, S??ren H??jsgaard 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/
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