I think is time to learning Rcpp! :-)
thank you (Peter Dalgaard and Dirk Eddelbuettel ) by the examples!
the more simples are often more informatives...
cleber
Em 21/09/2015 12:36, Dirk Eddelbuettel escreveu:
peter dalgaard <pdalgd <at> gmail.com> writes:
C is call by value and k and res are pointers. You need a dereferencing
step or nothing with happen. Try
*res = *k + 1;
Or you use Rcpp which writes the glue code. Save the following into a file:
#include <Rcpp.h>
// [[Rcpp::export]]
int adder(int x, int y) {
return x + y;
}
/*** R
adder(40, 2)
*/
Running this is as simple as sourcing it:
R> Rcpp::sourceCpp("/tmp/adder.cpp")
R> adder(40, 2)
[1] 42
R>
and it even runs the R snippet at the bottom.
Dirk
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