protected override PolynomialEquationSolution CalculateSolution(List <int> coefficients, out bool invalidCoefficients)
{
if (coefficients[coefficients.Count - 1] == 0 || coefficients.Count(term => term != 0) < parameters.MinimumNumberOfTerms)
{
invalidCoefficients = true;
return(new PolynomialEquationSolution(new List <Root>(), 0));
}
invalidCoefficients = true;
return(PolynomialEquationAnalysisFunctions.ComputePolynomialEquationSolution(coefficients));
}
public void CheckFindsIntegerRoot()
{
var polynomial = new List <int>()
{
1, 2, 2, 1
};
var solution = PolynomialEquationAnalysisFunctions.ComputePolynomialEquationSolution(polynomial);
Assert.IsTrue(solution.Roots.Exists(root => root.IsInteger));
}
public void CheckComputesDiscriminant()
{
var polynomial = new List <int>()
{
1, -9, 1, 2, -6, 1
};
var solution = PolynomialEquationAnalysisFunctions.ComputePolynomialEquationSolution(polynomial);
Assert.AreEqual(-158315240, solution.Discriminant);
}
public void CheckFindsTripleRoot()
{
var polynomial = new List <int>()
{
1, 3, 3, 1
};
var solution = PolynomialEquationAnalysisFunctions.ComputePolynomialEquationSolution(polynomial);
Assert.AreEqual(3, solution.Roots.First().Degree);
}
