Rasmus Munk LarsenandRasmus Munk Larsen
8a3d61c790
libeigen/eigen!2509 Closes #2868 Co-authored-by: Rasmus Munk Larsen <rmlarsen@gmail.com>
22 lines
794 B
C++
22 lines
794 B
C++
// SPDX-FileCopyrightText: The Eigen Authors
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// SPDX-License-Identifier: MPL-2.0
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#include <Eigen/Dense>
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#include <iostream>
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template <typename Derived1, typename Derived2>
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void copyUpperTriangularPart(Eigen::MatrixBase<Derived1>& dst, const Eigen::MatrixBase<Derived2>& src) {
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/* Note the 'template' keywords in the following line! */
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dst.template triangularView<Eigen::Upper>() = src.template triangularView<Eigen::Upper>();
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}
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int main() {
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Eigen::MatrixXi m1 = Eigen::MatrixXi::Ones(5, 5);
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Eigen::MatrixXi m2 = Eigen::MatrixXi::Random(4, 4);
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std::cout << "m2 before copy:" << std::endl;
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std::cout << m2 << std::endl << std::endl;
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copyUpperTriangularPart(m2, m1.topLeftCorner(4, 4));
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std::cout << "m2 after copy:" << std::endl;
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std::cout << m2 << std::endl << std::endl;
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}
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