41 lines
743 B
C++
41 lines
743 B
C++
|
|
#include <Rcpp.h>
|
|
|
|
using namespace Rcpp;
|
|
|
|
// [[Rcpp::export]]
|
|
int fibonacci(const int x) {
|
|
|
|
if (x == 0) return(0);
|
|
if (x == 1) return(1);
|
|
|
|
return (fibonacci(x - 1)) + fibonacci(x - 2);
|
|
}
|
|
|
|
|
|
// [[Rcpp::export("convolveCpp")]]
|
|
NumericVector convolve(NumericVector a, NumericVector b) {
|
|
|
|
int na = a.size(), nb = b.size();
|
|
int nab = na + nb - 1;
|
|
NumericVector xab(nab);
|
|
|
|
for (int i = 0; i < na; i++)
|
|
for (int j = 0; j < nb; j++)
|
|
xab[i + j] += a[i] * b[j];
|
|
|
|
return xab;
|
|
}
|
|
|
|
|
|
// [[Rcpp::export]]
|
|
List lapplyCpp(List input, Function f) {
|
|
|
|
List output(input.size());
|
|
|
|
std::transform(input.begin(), input.end(), output.begin(), f);
|
|
output.names() = input.names();
|
|
|
|
return output;
|
|
}
|