public override Numeric divReversed(Numeric x)
{
if (!(x is RatNum))
{
throw new ArgumentException();
}
return(RatNum.divide((RatNum)x, this));
}
public override Numeric div(object y)
{
if (y is RatNum)
{
return(RatNum.divide(this, (RatNum)y));
}
if (!(y is Numeric))
{
throw new ArgumentException();
}
return(((Numeric)y).divReversed(this));
}