xref: /aosp_15_r20/external/eigen/doc/snippets/TopicAliasing_mult3.cpp (revision bf2c37156dfe67e5dfebd6d394bad8b2ab5804d4)

MatrixXf matA(2,2);
matA << 2, 0,  0, 2;
matA.noalias() = matA * matA;
cout << matA;