Robin,
Here is a quick example for using the BH package from CRAN to get rational
numbers:
R> sourceCpp("/tmp/ratEx.cpp")
R> invisible(quicktest())
Half is 1/2
Sum of two halves is 1/1
R>
where the code in /tmp/ratEx.cpp follows below. I enable C++11 merely for
convenience as R (and g++) otherwise complain about 'long long'. Should your
compile not like or support C++11, just remove the line with the cpp11 plugin.
Dirk
#include <Rcpp.h>
// [[Rcpp::depends(BH)]]
#include <boost/rational.hpp>
// not needed but suppress 'long long' warnings from Boost
// [[Rcpp::plugins(cpp11)]]
// [[Rcpp::export]]
bool quicktest() {
boost::rational<int> half(1,2);
Rcpp::Rcout << "Half is " << half << std::endl;
Rcpp::Rcout << "Sum of two halves is " << half + half << std::endl;
return true;
}
/*** R
invisible(quicktest())
*/
--
http://dirk.eddelbuettel.com | @eddelbuettel | [email protected]
_______________________________________________
Rcpp-devel mailing list
[email protected]
https://lists.r-forge.r-project.org/cgi-bin/mailman/listinfo/rcpp-devel
