Example usage for org.apache.commons.math3.analysis.solvers LaguerreSolver solveAllComplex

Introduction

In this page you can find the example usage for org.apache.commons.math3.analysis.solvers LaguerreSolver solveAllComplex.

Prototype

public Complex[] solveAllComplex(double[] coefficients, double initial)
        throws NullArgumentException, NoDataException, TooManyEvaluationsException 

Source Link

Document

Find all complex roots for the polynomial with the given coefficients, starting from the given initial value.

Usage

From source file:dom.rootlocus.utils.Utils.java

public Complex[] getRoots(PolynomialFunction p) {
    double[] coefficients = p.getCoefficients();
    LaguerreSolver solver = new LaguerreSolver(1e-10);
    Complex[] r = solver.solveAllComplex(p.getCoefficients(), 0);
    return r;// w  w  w  .  j  a  v  a2  s . c  o  m
    //        Complex[] roots = new Complex[r.length];
    //        for (int i = 0; i < r.length; i++) {
    //            double Re = new BigDecimal(r[i].getReal()).setScale(5, RoundingMode.HALF_UP).doubleValue();
    //            double Img = new BigDecimal(r[i].getImaginary()).setScale(5, RoundingMode.HALF_UP).doubleValue();
    //            roots[i] = new Complex(Re, Img);
    //        }
    //        return roots;
}

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