14 lines
552 B
C++
14 lines
552 B
C++
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MatrixXcd X = MatrixXcd::Random(4,4);
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MatrixXcd A = X + X.adjoint();
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cout << "Here is a random self-adjoint 4x4 matrix:" << endl << A << endl << endl;
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Tridiagonalization<MatrixXcd> triOfA(A);
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MatrixXd T = triOfA.matrixT();
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cout << "The tridiagonal matrix T is:" << endl << T << endl << endl;
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cout << "We can also extract the diagonals of T directly ..." << endl;
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VectorXd diag = triOfA.diagonal();
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cout << "The diagonal is:" << endl << diag << endl;
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VectorXd subdiag = triOfA.subDiagonal();
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cout << "The subdiagonal is:" << endl << subdiag << endl;
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