Efim Beshmenev
10 lines
426 B
C++
10 lines
426 B
C++
MatrixXd X = MatrixXd::Random(4,4);
|
|
MatrixXd A = X * X.transpose();
|
|
cout << "Here is a random positive-definite matrix, A:" << endl << A << endl << endl;
|
|
|
|
SelfAdjointEigenSolver<MatrixXd> es(A);
|
|
cout << "The inverse square root of A is: " << endl;
|
|
cout << es.operatorInverseSqrt() << endl;
|
|
cout << "We can also compute it with operatorSqrt() and inverse(). That yields: " << endl;
|
|
cout << es.operatorSqrt().inverse() << endl;
|