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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 | Matrix4d A = Matrix4d::Random(4,4);
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11 | cout << "Here is a random 4x4 matrix:" << endl << A << endl;
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12 | HessenbergDecomposition<Matrix4d> hessOfA(A);
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13 | Matrix4d pm = hessOfA.packedMatrix();
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14 | cout << "The packed matrix M is:" << endl << pm << endl;
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15 | cout << "The upper Hessenberg part corresponds to the matrix H, which is:"
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16 | << endl << hessOfA.matrixH() << endl;
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17 | Vector3d hc = hessOfA.householderCoefficients();
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18 | cout << "The vector of Householder coefficients is:" << endl << hc << endl;
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19 |
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20 | return 0;
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21 | }
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