| // SPDX-FileCopyrightText: The Eigen Authors | |
| // SPDX-License-Identifier: MPL-2.0 | |
| MatrixXf matA(2, 2), matB(2, 2); | |
| matA << 2, 0, 0, 2; | |
| // Simple but not quite as efficient | |
| matB = matA * matA; | |
| cout << matB << endl << endl; | |
| // More complicated but also more efficient | |
| matB.noalias() = matA * matA; | |
| cout << matB; |