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Move eigen to third party (#282)

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* remove useless statement

* Add eigen to third_party dir

* remove reducdant lines
This commit is contained in:
Jack Zhou
2022-09-26 19:24:02 +08:00
committed by GitHub
parent 36eb6fbba6
commit 355382ad63
1781 changed files with 420576 additions and 71 deletions
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11
third_party/eigen/doc/snippets/Tridiagonalization_decomposeInPlace.cpp vendored Normal file
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@@ -0,0 +1,11 @@
MatrixXd X = MatrixXd::Random(5, 5);
MatrixXd A = X + X.transpose();
cout << "Here is a random symmetric 5x5 matrix:" << endl << A << endl << endl;
VectorXd diag(5);
VectorXd subdiag(4);
internal::tridiagonalization_inplace(A, diag, subdiag, true);
cout << "The orthogonal matrix Q is:" << endl << A << endl;
cout << "The diagonal of the tridiagonal matrix T is:" << endl << diag << endl;
cout << "The subdiagonal of the tridiagonal matrix T is:" << endl
<< subdiag << endl;