public int CompareTo(BigFloat other)
{
if (object.Equals(other, null))
{
throw new ArgumentNullException(nameof(other));
}
//Make copies
var one = Numerator;
var two = other.Numerator;
//cross multiply
one *= other.Denominator;
two *= Denominator;
//test
return(BigInteger.Compare(one, two));
}
public int CompareTo(BigFloat other)
{
if (BigFloat.Equals(other, null))
{
throw new ArgumentNullException("other");
}
//Make copies
BigInteger one = this.numerator;
BigInteger two = other.numerator;
//cross multiply
one *= other.denominator;
two *= this.denominator;
//test
return(BigInteger.Compare(one, two));
}
public static int Compare(BigRational r1, BigRational r2)
{
// a/b = c/d, iff ad = bc
return BigInteger.Compare(r1.m_numerator * r2.Denominator, r2.m_numerator * r1.Denominator);
}