[Rd] Suggestion for an extension of the API

[Douglas Bates]

Adrian Trapletti <adrian@olsen.ch> writes:

> Especially for larger optimization problems, it would be nice to have an
> entry point for C/C++ code to the R optimizers (the ones which are called
> when using optim()), where the client just has to provide the functions
> fminfn() and fmingr() and calls directly, e.g., vmmin() (all from
> $RHOME/src/main/optim.c). Are there any plans for providing such an entry
> point?

There is such an entry point for the optimizer used by nlm.  It is
called optif9 and is declared in $RHOME/lib/R/include/R_ext/Applic.h

I can provide an example of its use if you wish.
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