Generated C++ code:
int main(int argc, char** argv)
{
double b ;
mat a ;
a = arma::randu(5, 5) ;
b = double(arma::as_scalar(arma::sum(arma:vectorize(a(span(0, a.n_rows-1)))))) ;
return 0 ;
}
Corrected C++ code:
int main(int argc, char** argv)
{
double b;
mat a;
a = arma::randu(5, 5);
b = double(arma::as_scalar(arma::sum(arma::vectorise(a))));
return 0;
}
There are 3 issues here:
1) Armadillo uses 'vectorise' instead of 'vectorize' as the function name. I guess it's a typo but ...
2) the generated code missed one column ':' after arma. It should be arma::vectorise().
3) a(span(0, a.n_rows-1)) is not right since it's a mat. You can simply use a, doesn't need indexing. Like:
arma::vectorise(a)
taiwuchiang
commented
7 years ago
Matlab code:
a = rand(5,5); b = sum(a(:));
Generated C++ code: int main(int argc, char** argv) { double b ; mat a ; a = arma::randu(5, 5) ;
b = double(arma::as_scalar(arma::sum(arma:vectorize(a(span(0, a.n_rows-1)))))) ;
return 0 ;
}
Corrected C++ code:
int main(int argc, char** argv) { double b; mat a; a = arma::randu(5, 5);
b = double(arma::as_scalar(arma::sum(arma::vectorise(a))));
return 0;
}
There are 3 issues here: 1) Armadillo uses 'vectorise' instead of 'vectorize' as the function name. I guess it's a typo but ... 2) the generated code missed one column ':' after arma. It should be arma::vectorise(). 3) a(span(0, a.n_rows-1)) is not right since it's a mat. You can simply use a, doesn't need indexing. Like: arma::vectorise(a)
Thanks.