R help - Feb 2002 - question about F77_NAME()

Dear R-help,

Sorry if this is way obvious.  (It just wasn't for me...)

Do all parameters passed to Fortran routines from C need to be declared as
pointers?  In various header files (e.g., Linpack.h), that seems to be the
case.

Also, what type should I declare in front of F77_NAME() for a subroutine?
void?

Thanks for any help!

Regards,
Andy


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On Fri, 8 Feb 2002, Liaw, Andy wrote:
> Dear R-help,
>
> Sorry if this is way obvious.  (It just wasn't for me...)
>
> Do all parameters passed to Fortran routines from C need to be declared as
> pointers?  In various header files (e.g., Linpack.h), that seems to be the
> case.
Yes. Fortran passes by reference.
> Also, what type should I declare in front of F77_NAME() for a subroutine?
> void?
Yes.

-- 
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)
1 South Parks Road,                     +44 1865 272860 (secr)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595

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