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

   1 #include <Eigen/Core>
   2 #include <Eigen/LU>
   3 #include <iostream>
   4
   5 using namespace std;
   6 using namespace Eigen;
   7
   8 int main()
   9 {
  10    Matrix3f A;
  11    Vector3f b;
  12    A << 1,2,3,  4,5,6,  7,8,10;
  13    b << 3, 3, 4;
  14    cout << "Here is the matrix A:" << endl << A << endl;
  15    cout << "Here is the vector b:" << endl << b << endl;
  16    Vector3f x = A.lu().solve(b);
  17    cout << "The solution is:" << endl << x << endl;
  18 }