[Rcpp-devel] Integer matrices in Rcpp and Armadillo

[Simon Zehnder]

Hi Dirk,

thanks for the fast reply. It seems, that using ints is the only possibility here. I understand though, that the arma::umat has type 'unsigned int', hasn't it? So in this case I wouldn't be able to use umat, but rather mat<int>, right?

Best

Simon


On Jun 6, 2013, at 6:32 PM, Dirk Eddelbuettel <edd at debian.org> wrote:

> 
> On 6 June 2013 at 18:03, Simon Zehnder wrote:
> | What I need is an arma::umat in C++ and if possible in addition an integer array in R. Is this possible?
> 
> R itself has no unsigned integers (just as it has no [signed or unsigned] short or long integeger).
> 
> You should be able to write wrappers though, but this MUST entail copies for
> that very reason.  So maybe stick to ints?
> 
> Dirk
> 
> -- 
> Dirk Eddelbuettel | edd at debian.org | http://dirk.eddelbuettel.com