public void TestFactorialNegative() { var a = new LongInteger("-453453456366656456"); a.Factorial(); Assert.AreEqual("-453453456366656456", a.ToString()); }
public void TestFactorial() { var a = new LongInteger("9"); var c = a.Factorial(); Assert.AreEqual("9", a.ToString()); Assert.AreEqual("362880", c.ToString()); a = new LongInteger("100"); c = a.Factorial(); Assert.AreEqual("100", a.ToString()); Assert.AreEqual("93326215443944152681699238856266700490715968264381621468592963895217599993229915608941463976156518286253697920827223758251185210916864000000000000000000000000", c.ToString()); a = new LongInteger("0"); c = a.Factorial(); Assert.AreEqual("0", a.ToString()); Assert.AreEqual("1", c.ToString()); }