void Lcm()
{
Assert.Equal(6, MathX.Lcm(6, 6));
Assert.Equal(6, MathX.Lcm(2, 3));
Assert.Equal(36, MathX.Lcm(12, 18));
Assert.Equal(36, MathX.Lcm(18, 12));
//Assert.Throws<OverflowException>(() => MathX.Lcm(1000000007, 1000000009));
//0以下は未定義
Assert.Equal(0, MathX.Lcm(0, 114));
Assert.Equal(0, MathX.Lcm(514, 0));
Assert.Throws <DivideByZeroException>(() => MathX.Lcm(0, 0));
}