public void LogTest()
{
Assert.True(n1.Log10() == 4 && n2.Log10() == 50 && n2.Log(n1) == 12.5);
Assert.True(n2.Log().GetRealMantissa() == 115.12925464970229);
}
public NumberClass Log(NumberClass @base) => this == Zero ? Zero : Log10() / @base.Log10();
