// This file is part of Eigen, a lightweight C++ template library // for linear algebra. // // Copyright (C) 2020 Sebastien Boisvert <seb@boisvert.info> // // This Source Code Form is subject to the terms of the Mozilla // Public License v. 2.0. If a copy of the MPL was not distributed // with this file, You can obtain one at http://mozilla.org/MPL/2.0/. #include "BenchTimer.h" #include "../test/MovableScalar.h" #include <Eigen/Core> #include <iostream> #include <utility> template <typename MatrixType> void copy_matrix(MatrixType& m) { MatrixType tmp(m); m = tmp; } template <typename MatrixType> void move_matrix(MatrixType&& m) { MatrixType tmp(std::move(m)); m = std::move(tmp); } template<typename Scalar> void bench(const std::string& label) { using MatrixType = Eigen::Matrix<Eigen::MovableScalar<Scalar>,1,10>; Eigen::BenchTimer t; int tries = 10; int rep = 1000000; MatrixType data = MatrixType::Random().eval(); MatrixType dest; BENCH(t, tries, rep, copy_matrix(data)); std::cout << label << " copy semantics: " << 1e3*t.best(Eigen::CPU_TIMER) << " ms" << std::endl; BENCH(t, tries, rep, move_matrix(std::move(data))); std::cout << label << " move semantics: " << 1e3*t.best(Eigen::CPU_TIMER) << " ms" << std::endl; } int main() { bench<float>("float"); bench<double>("double"); return 0; }