Calling an R function using inline and Rcpp is still just as slow as original R code

Question

I need to evaluate a function (posterior distribution) which requires long loops. Clearly I don\'t want to do this within R itself, and so I\'m using \"inline\" and \"Rcpp\

Answer 1

You are calling an R function from Rcpp.

That cannot be faster than calling the R function directly.

Your binding constraint is the function you call and not how you call it. Rcpp is not some magic R-to-C++ compiler.