//=============================================================================
//
// Copyright (c) 2020 Marco Colombo
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program.  If not, see <http://www.gnu.org/licenses/>.
//
//=============================================================================

#include <RcppEigen.h>

// [[Rcpp::export]]
Eigen::MatrixXd multiplyAB(const Eigen::Map<Eigen::MatrixXd>& A,
                           const Eigen::Map<Eigen::MatrixXd>& B) {
  return A * B;
}

// [[Rcpp::export]]
Eigen::MatrixXd multiplyAtB(const Eigen::Map<Eigen::MatrixXd>& A,
                            const Eigen::Map<Eigen::MatrixXd>& B) {
  return A.transpose() * B;
}

// [[Rcpp::export]]
Eigen::MatrixXd multiplyABt(const Eigen::Map<Eigen::MatrixXd>& A,
                            const Eigen::Map<Eigen::MatrixXd>& B) {
  return A * B.transpose();
}