public Rational Add(Rational val)
{
BigInteger num = Numerator.Multiply(val.Denominator).Add(Denominator.Multiply(val.Numerator));
BigInteger deno = Denominator.Multiply(val.Denominator);
return(new Rational(num, deno));
} /* Rational.add */
public Rational Multiply(Rational val)
{
BigInteger num = Numerator.Multiply(val.Numerator);
BigInteger deno = Denominator.Multiply(val.Denominator);
/* Normalization to an coprime format will be done inside
* the ctor() and is not duplicated here.
*/
return(new Rational(num, deno));
}
public Rational Divide(Rational val)
{
if (val.CompareTo(Zero) == 0)
{
throw new DivideByZeroException();
}
BigInteger num = Numerator.Multiply(val.Denominator);
BigInteger deno = Denominator.Multiply(val.Numerator);
/* Reduction to a coprime format is done inside the ctor,
* and not repeated here.
*/
return(new Rational(num, deno));
}
public Rational Add(int val)
{
BigInteger val2 = Numerator.Add(Denominator.Multiply(BigInteger.Parse("" + val)));
return(new Rational(val2, Denominator));
}