Hi, I am trying to create an R interface for Dynare++ [1], a k-order solver for rational expectation models. I would like some advice on how to glue the C++ code to R.
In C++, it works the following way: - a DynareModelEq object is initialized with the formulas, parses them and performs k-order symbolic expansions - the user calls a member of this object multiple times with parameter values (eg for MCMC), the object returns tensors An R interface could work this way: modeleq <- dynare_expand(... model description ...) result1 <- dynare_substitute(modeleq, par1) result2 <- dynare_substitute(modeleq, par2) etc. So the user needs to see something in R that corresponds to a C++ object that remains in the memory between calls. What is the proper way to do that? Pass a pointer? How do I handle that in the .C() calls, convert it to long int? My C++ programming knowledge is pretty limited, suggestions and examples would be appreciated. The rest (using extern "C" constructs as described in "Writing R Extensions") is pretty clear, except how to make R call the destructor of the object when the garbage collector removes it. Thanks, Tamas [1] http://www.cepremap.cnrs.fr/juillard/mambo/index.php?option=com_content&task=view&id=53&Itemid=86 ______________________________________________ [email protected] mailing list https://stat.ethz.ch/mailman/listinfo/r-devel
