public void NegativeValue()
{
factExp = new FactorialExp(new Number(-5.0));
factExp.Evaluate();
factExp = new FactorialExp(new Number(-11456.0));
factExp.Evaluate();
factExp = new FactorialExp(new Number(-12.5262));
factExp.Evaluate();
}
public void ForbiddenValue()
{
factExp = new FactorialExp(new Number(1.4));
factExp.Evaluate();
factExp = new FactorialExp(new Number(215.6));
factExp.Evaluate();
factExp = new FactorialExp(new Number(222262.56));
factExp.Evaluate();
}
public void ZeroTested()
{
factExp = new FactorialExp(new Number(0.0));
dif = new Difference(factExp.Evaluate(), 1.0);
Assert.IsTrue(dif.IsAlmostSame());
factExp = new FactorialExp(new Number(-0.0));
dif = new Difference(factExp.Evaluate(), 1.0);
Assert.IsTrue(dif.IsAlmostSame());
}
public void NormalValue()
{
factExp = new FactorialExp(new Number(1.0));
dif = new Difference(1.0, factExp.Evaluate());
Assert.IsTrue(dif.IsAlmostSame());
factExp = new FactorialExp(new Number(3.0));
dif = new Difference(6.0, factExp.Evaluate());
Assert.IsTrue(dif.IsAlmostSame());
factExp = new FactorialExp(new Number(7.0));
dif = new Difference(5040.0, factExp.Evaluate());
Assert.IsTrue(dif.IsAlmostSame());
factExp = new FactorialExp(new Number(8.0));
dif = new Difference(40320.0, factExp.Evaluate());
Assert.IsTrue(dif.IsAlmostSame());
factExp = new FactorialExp(new Number(21.0));
dif = new Difference(51090942171709440000.0, factExp.Evaluate());
Assert.IsTrue(dif.IsAlmostSame());
}
