R help - Mar 1999 - Fortran90

Hi,

working with R, version 0.63.0, I was successful to dyn.load
fortran90 subroutines on a Solaris 2.6, as long as they are more or less
in conformity with f77.

It was not possible to work with statements like
REAL,DIMENSION(:)  :: d
or
x=SUM(y).

REAL,DIMENSION(1:10) :: d is possible.

We compiled R with f77.

Is it possible with real f90 routines or is is in any conflict with the
shared object concept or do we simply have to recompile R with f90? Are
any system libraries missed?

Thanks,

Bodo Ahrens







--
Dr. Bodo Ahrens
Institut fuer Meteorologie und Geophysik, Universitaet Wien
Hohe Warte 38, A-1190 Wien
Tel.: +43 1 36026 3007, Fax : +43 1 36026 3020
E-mail: Bodo.Ahrens at univie.ac.at

On Wed, 10 Mar 1999, Bodo Ahrens wrote:
> Hi,
> 
> working with R, version 0.63.0, I was successful to dyn.load
> fortran90 subroutines on a Solaris 2.6, as long as they are more or less
> in conformity with f77.
> 
> It was not possible to work with statements like
> REAL,DIMENSION(:)  :: d
> or
> x=SUM(y).
> 
> REAL,DIMENSION(1:10) :: d is possible.
> 

One problem is that R only provides double precision floating point
numbers. Also, I don't know if the calling standards for f90 code are the
same as f77; it may even depend on your compiler. The compiler should come
with some documentation about calling from other languages.

	-thomas

Thomas Lumley
Assistant Professor, Biostatistics
University of Washington, Seattle

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