If you read further in Drew's posts (which I highly recommend) he says
that C++/Rcpp isn't the best for wrapping Fortran calls, and that it
is faster and cleaner to use C. I have a relatively detailed blog post
on building packages with Fortran (or raw C) code; I hope you may find
it useful in your
I think the current best practice is to wrap the Fortran code in a C
helper, and invoke that using .Call - more information on that is available
in Hadley's book - http://adv-r.had.co.nz/C-interface.html
It shouldn't be too much work, maybe another 10-20 lines of code, most of
which could probably
