R help - Mar 2007 - Calling Optim() from C

Hello:

I am sure this question was dealt with several years ago.  Is the function
vmmin()  available  from Rmath Standalone? If not is it possible  to call
optim()  or  nlm()  from Rmath in C.  Thank you.

Mervyn

Section 6.8 of the writing R extensions manual mentions this:

6.8 Optimization
The C code underlying optim can be accessed directly. The user needs  
to supply a function to
compute the function to be minimized, of the type
typedef double optimfn(int n, double *par, void *ex);

And also vmmin() and quite a few others optimization routines
whose interfaces are in: ‘R_ext/Applic.h’


Hope this is what you're looking for, Ingmar


On 8 Mar 2007, at 03:35, Mervyn G Marasinghe wrote:
> Hello:
>
> I am sure this question was dealt with several years ago.  Is the  
> function
> vmmin()  available  from Rmath Standalone? If not is it possible   
> to call
> optim()  or  nlm()  from Rmath in C.  Thank you.
>
> Mervyn
>
> ______________________________________________
> R-help@stat.math.ethz.ch mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide http://www.R-project.org/posting- 
> guide.html
> and provide commented, minimal, self-contained, reproducible code.

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