25 lines
584 B
C++
25 lines
584 B
C++
|
// -*- mode: C++; c-indent-level: 4; c-basic-offset: 4; tab-width: 8 -*-
|
||
|
|
|
||
|
|
// This is a rewrite of the 'Writing R Extensions' section 5.10.1 example
|
||
|
|
|
||
|
|
#include <Rcpp.h>
|
||
|
|
|
||
|
|
RcppExport SEXP convolve3cpp(SEXP a, SEXP b){
|
||
|
|
Rcpp::NumericVector xa(a);
|
||
|
|
Rcpp::NumericVector xb(b);
|
||
|
|
int n_xa = xa.size() ;
|
||
|
|
int n_xb = xb.size() ;
|
||
|
|
int nab = n_xa + n_xb - 1;
|
||
|
|
Rcpp::NumericVector xab(nab);
|
||
|
|
|
||
|
|
for (int i = 0; i < n_xa; i++)
|
||
|
|
for (int j = 0; j < n_xb; j++)
|
||
|
|
xab[i + j] += xa[i] * xb[j];
|
||
|
|
|
||
|
|
return xab ;
|
||
|
|
}
|
||
|
|
|
||
|
|
#include "loopmacro.h"
|
||
|
|
LOOPMACRO_CPP(convolve3cpp)
|
||
|
|
|