private static void Test2()
{
Rational r0 = new Rational(25, 24);
Rational r1 = new Rational(81, 80);
Rational r2 = new Rational(128, 125);
Debug.Print("{0}", new Rational(45, 32) * r1.Power(-1)); // 25/18
}
public static Rational MakeNarrow(Rational r, Rational b)
{
if (r.GetHighPrimeIndex() == b.GetHighPrimeIndex())
{
return(r); // can't narrow on same prime level
}
double r_ = r.ToDouble();
double b_ = b.ToDouble();
double l = Math.Log(r_, b_); // e.g. 1.58 for {3, 2}
Pow e = (Pow)(l + 0.25); // something between Floor and Round
r /= b.Power(e);
return(r);
}
