public void FindRootTest1()
{
Func<double, double> polynomial = x => (x - 1)*(x - 10)*(x - 18);
RegulaFalsiMethodD rootFinder = new RegulaFalsiMethodD(polynomial);
rootFinder.EpsilonX = Numeric.EpsilonD / 100;
double xRoot = rootFinder.FindRoot(0, 2);
Assert.IsTrue(Numeric.AreEqual(0, polynomial(xRoot)));
Console.WriteLine("NumberOfIterations: {0}", rootFinder.NumberOfIterations);
xRoot = rootFinder.FindRoot(4, 10);
Assert.IsTrue(Numeric.AreEqual(0, polynomial(xRoot)));
Console.WriteLine("NumberOfIterations: {0}", rootFinder.NumberOfIterations);
xRoot = rootFinder.FindRoot(10, 4);
Assert.IsTrue(Numeric.AreEqual(0, polynomial(xRoot)));
Console.WriteLine("NumberOfIterations: {0}", rootFinder.NumberOfIterations);
xRoot = rootFinder.FindRoot(10, 12);
Assert.IsTrue(Numeric.AreEqual(0, polynomial(xRoot)));
Console.WriteLine("NumberOfIterations: {0}", rootFinder.NumberOfIterations);
xRoot = rootFinder.FindRoot(2, 0);
Assert.IsTrue(Numeric.AreEqual(0, polynomial(xRoot)));
Console.WriteLine("NumberOfIterations: {0}", rootFinder.NumberOfIterations);
xRoot = rootFinder.FindRoot(0, 7);
Assert.IsTrue(Numeric.AreEqual(0, polynomial(xRoot)));
Console.WriteLine("NumberOfIterations: {0}", rootFinder.NumberOfIterations);
xRoot = rootFinder.FindRoot(7, 0);
Assert.IsTrue(Numeric.AreEqual(0, polynomial(xRoot)));
Console.WriteLine("NumberOfIterations: {0}", rootFinder.NumberOfIterations);
xRoot = rootFinder.FindRoot(-6, 2);
Assert.IsTrue(Numeric.AreEqual(0, polynomial(xRoot)));
Console.WriteLine("NumberOfIterations: {0}", rootFinder.NumberOfIterations);
xRoot = rootFinder.FindRoot(-1, 1);
Assert.IsTrue(Numeric.AreEqual(0, polynomial(xRoot)));
Console.WriteLine("NumberOfIterations: {0}", rootFinder.NumberOfIterations);
xRoot = rootFinder.FindRoot(-1, 1);
Assert.IsTrue(Numeric.AreEqual(0, polynomial(xRoot)));
Console.WriteLine("NumberOfIterations: {0}", rootFinder.NumberOfIterations);
xRoot = rootFinder.FindRoot(2, 3);
Assert.IsTrue(double.IsNaN(xRoot));
Console.WriteLine("NumberOfIterations: {0}", rootFinder.NumberOfIterations);
xRoot = rootFinder.FindRoot(3, 2);
Assert.IsTrue(double.IsNaN(xRoot));
Console.WriteLine("NumberOfIterations: {0}", rootFinder.NumberOfIterations);
rootFinder.MaxNumberOfIterations = 1;
xRoot = rootFinder.FindRoot(0, 1000);
Assert.IsTrue(double.IsNaN(xRoot));
Console.WriteLine("NumberOfIterations: {0}", rootFinder.NumberOfIterations);
}
public void FindRootTest1()
{
Func <double, double> polynomial = x => (x - 1) * (x - 10) * (x - 18);
RegulaFalsiMethodD rootFinder = new RegulaFalsiMethodD(polynomial);
rootFinder.EpsilonX = Numeric.EpsilonD / 100;
double xRoot = rootFinder.FindRoot(0, 2);
Assert.IsTrue(Numeric.AreEqual(0, polynomial(xRoot)));
Console.WriteLine("NumberOfIterations: {0}", rootFinder.NumberOfIterations);
xRoot = rootFinder.FindRoot(4, 10);
Assert.IsTrue(Numeric.AreEqual(0, polynomial(xRoot)));
Console.WriteLine("NumberOfIterations: {0}", rootFinder.NumberOfIterations);
xRoot = rootFinder.FindRoot(10, 4);
Assert.IsTrue(Numeric.AreEqual(0, polynomial(xRoot)));
Console.WriteLine("NumberOfIterations: {0}", rootFinder.NumberOfIterations);
xRoot = rootFinder.FindRoot(10, 12);
Assert.IsTrue(Numeric.AreEqual(0, polynomial(xRoot)));
Console.WriteLine("NumberOfIterations: {0}", rootFinder.NumberOfIterations);
xRoot = rootFinder.FindRoot(2, 0);
Assert.IsTrue(Numeric.AreEqual(0, polynomial(xRoot)));
Console.WriteLine("NumberOfIterations: {0}", rootFinder.NumberOfIterations);
xRoot = rootFinder.FindRoot(0, 7);
Assert.IsTrue(Numeric.AreEqual(0, polynomial(xRoot)));
Console.WriteLine("NumberOfIterations: {0}", rootFinder.NumberOfIterations);
xRoot = rootFinder.FindRoot(7, 0);
Assert.IsTrue(Numeric.AreEqual(0, polynomial(xRoot)));
Console.WriteLine("NumberOfIterations: {0}", rootFinder.NumberOfIterations);
xRoot = rootFinder.FindRoot(-6, 2);
Assert.IsTrue(Numeric.AreEqual(0, polynomial(xRoot)));
Console.WriteLine("NumberOfIterations: {0}", rootFinder.NumberOfIterations);
xRoot = rootFinder.FindRoot(-1, 1);
Assert.IsTrue(Numeric.AreEqual(0, polynomial(xRoot)));
Console.WriteLine("NumberOfIterations: {0}", rootFinder.NumberOfIterations);
xRoot = rootFinder.FindRoot(-1, 1);
Assert.IsTrue(Numeric.AreEqual(0, polynomial(xRoot)));
Console.WriteLine("NumberOfIterations: {0}", rootFinder.NumberOfIterations);
xRoot = rootFinder.FindRoot(2, 3);
Assert.IsTrue(double.IsNaN(xRoot));
Console.WriteLine("NumberOfIterations: {0}", rootFinder.NumberOfIterations);
xRoot = rootFinder.FindRoot(3, 2);
Assert.IsTrue(double.IsNaN(xRoot));
Console.WriteLine("NumberOfIterations: {0}", rootFinder.NumberOfIterations);
rootFinder.MaxNumberOfIterations = 1;
xRoot = rootFinder.FindRoot(0, 1000);
Assert.IsTrue(double.IsNaN(xRoot));
Console.WriteLine("NumberOfIterations: {0}", rootFinder.NumberOfIterations);
}
