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[136] | 1 | #include <Eigen/Dense>
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| 2 | #include <iostream>
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| 3 |
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| 4 | using namespace Eigen;
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| 5 | using namespace std;
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| 6 |
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| 7 | int main(int, char**)
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| 8 | {
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| 9 | cout.precision(3);
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| 10 | Matrix4f A = MatrixXf::Random(4,4);
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| 11 | cout << "Here is a random 4x4 matrix:" << endl << A << endl;
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| 12 | HessenbergDecomposition<MatrixXf> hessOfA(A);
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| 13 | MatrixXf H = hessOfA.matrixH();
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| 14 | cout << "The Hessenberg matrix H is:" << endl << H << endl;
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| 15 | MatrixXf Q = hessOfA.matrixQ();
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| 16 | cout << "The orthogonal matrix Q is:" << endl << Q << endl;
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| 17 | cout << "Q H Q^T is:" << endl << Q * H * Q.transpose() << endl;
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| 18 |
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| 19 | return 0;
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| 20 | }
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