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