Files
FastDeploy/third_party/eigen/unsupported/doc/examples/MatrixSquareRoot.cpp
Jack Zhou 355382ad63 Move eigen to third party (#282)
* remove useless statement

* Add eigen to third_party dir

* remove reducdant lines
2022-09-26 19:24:02 +08:00

16 lines
446 B
C++

#include <iostream>
#include <unsupported/Eigen/MatrixFunctions>
using namespace Eigen;
int main() {
const double pi = std::acos(-1.0);
MatrixXd A(2, 2);
A << cos(pi / 3), -sin(pi / 3), sin(pi / 3), cos(pi / 3);
std::cout << "The matrix A is:\n" << A << "\n\n";
std::cout << "The matrix square root of A is:\n" << A.sqrt() << "\n\n";
std::cout << "The square of the last matrix is:\n"
<< A.sqrt() * A.sqrt() << "\n";
}