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| #include <iostream>
| #include <Eigen/Dense>
|
| using namespace std;
| using namespace Eigen;
|
| int main()
| {
| Matrix2f A, b;
| LLT<Matrix2f> llt;
| A << 2, -1, -1, 3;
| b << 1, 2, 3, 1;
| cout << "Here is the matrix A:\n" << A << endl;
| cout << "Here is the right hand side b:\n" << b << endl;
| cout << "Computing LLT decomposition..." << endl;
| llt.compute(A);
| cout << "The solution is:\n" << llt.solve(b) << endl;
| A(1,1)++;
| cout << "The matrix A is now:\n" << A << endl;
| cout << "Computing LLT decomposition..." << endl;
| llt.compute(A);
| cout << "The solution is now:\n" << llt.solve(b) << endl;
| }
|
|
