ground/gcs/src/libs/eigen/doc/examples/TutorialLinAlgExSolveLDLT.cpp

   1 #include <iostream>
   2 #include <Eigen/Dense>
   3
   4 using namespace std;
   5 using namespace Eigen;
   6
   7 int main()
   8 {
   9    Matrix2f A, b;
  10    A << 2, -1, -1, 3;
  11    b << 1, 2, 3, 1;
  12    cout << "Here is the matrix A:\n" << A << endl;
  13    cout << "Here is the right hand side b:\n" << b << endl;
  14    Matrix2f x = A.ldlt().solve(b);
  15    cout << "The solution is:\n" << x << endl;
  16 }