compile_MatrixBase_computeInverseAndDetWithCheck.cpp

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#include <Eigen/Core>
#include <Eigen/LU>
#include <Eigen/QR>
#include <Eigen/Cholesky>
#include <Eigen/Geometry>
#include <Eigen/Jacobi>
#include <Eigen/Eigenvalues>
#include <iostream>

using namespace Eigen;
using namespace std;

int main(int, char**)
{
  cout.precision(3);
  Matrix3d m = Matrix3d::Random();
cout << "Here is the matrix m:" << endl << m << endl;
Matrix3d inverse;
bool invertible;
double determinant;
m.computeInverseAndDetWithCheck(inverse,determinant,invertible);
cout << "Its determinant is " << determinant << endl;
if(invertible) {
  cout << "It is invertible, and its inverse is:" << endl << inverse << endl;
}
else {
  cout << "It is not invertible." << endl;
}

  return 0;
}