mirror of
https://gitlab.com/libeigen/eigen.git
synced 2024-12-15 07:10:37 +08:00
15 lines
371 B
C++
15 lines
371 B
C++
#include <iostream>
|
|
#include <Eigen/Dense>
|
|
|
|
using namespace std;
|
|
using namespace Eigen;
|
|
|
|
int main()
|
|
{
|
|
MatrixXd A = MatrixXd::Random(100,100);
|
|
MatrixXd b = MatrixXd::Random(100,50);
|
|
MatrixXd x = A.fullPivLu().solve(b);
|
|
double relative_error = (A*x - b).norm() / b.norm(); // norm() is L2 norm
|
|
cout << "The relative error is:\n" << relative_error << endl;
|
|
}
|