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eigen/doc/snippets/HouseholderQR_solve.cpp
2026-05-04 00:36:12 +00:00

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C++

// SPDX-FileCopyrightText: The Eigen Authors
// SPDX-License-Identifier: MPL-2.0
typedef Matrix<float, 3, 3> Matrix3x3;
Matrix3x3 m = Matrix3x3::Random();
Matrix3f y = Matrix3f::Random();
cout << "Here is the matrix m:" << endl << m << endl;
cout << "Here is the matrix y:" << endl << y << endl;
Matrix3f x;
x = m.householderQr().solve(y);
assert(y.isApprox(m* x));
cout << "Here is a solution x to the equation mx=y:" << endl << x << endl;