public void FactorialDoubleFactorialRelationship()
{
// n! = n!! (n-1)!!
foreach (int n in TestUtilities.GenerateIntegerValues(1, 100, 5))
{
Assert.IsTrue(TestUtilities.IsNearlyEqual(
AdvancedIntegerMath.LogFactorial(n),
AdvancedIntegerMath.LogDoubleFactorial(n) + AdvancedIntegerMath.LogDoubleFactorial(n - 1)
));
}
}