| Brian Silverman | 72890c2 | 2015-09-19 14:37:37 -0400 | [diff] [blame^] | 1 | #include <unsupported/Eigen/Polynomials> |
| 2 | #include <iostream> |
| 3 | |
| 4 | using namespace Eigen; |
| 5 | using namespace std; |
| 6 | |
| 7 | int main() |
| 8 | { |
| 9 | Vector4d roots = Vector4d::Random(); |
| 10 | cout << "Roots: " << roots.transpose() << endl; |
| 11 | Eigen::Matrix<double,5,1> polynomial; |
| 12 | roots_to_monicPolynomial( roots, polynomial ); |
| 13 | cout << "Polynomial: "; |
| 14 | for( int i=0; i<4; ++i ){ cout << polynomial[i] << ".x^" << i << "+ "; } |
| 15 | cout << polynomial[4] << ".x^4" << endl; |
| 16 | Vector4d evaluation; |
| 17 | for( int i=0; i<4; ++i ){ |
| 18 | evaluation[i] = poly_eval( polynomial, roots[i] ); } |
| 19 | cout << "Evaluation of the polynomial at the roots: " << evaluation.transpose(); |
| 20 | } |