public static HugeNumber operator -(HugeNumber a, HugeNumber b)
{
HugeNumber num = new HugeNumber(a);
num.Substract(b);
return(num);
}
public void Divide(HugeNumber num)
{
if (num.IsZero)
{
throw new System.Exception(string.Format("{0} divided by 0 or null was not allowed.", this));
}
if (IsZero)
{
return;
}
if (CompareAbsTo(num) < 0)
{
Reset();
return;
}
mNegative = mNegative ^ num.mNegative;
HugeNumber tmp = new HugeNumber(this);
tmp.Abs();
HugeNumber div = new HugeNumber(num);
div.Abs();
Reset();
HugeNumber sum = Zero;
while (tmp.CompareTo(div) >= 0)
{
int mov = tmp.mOffset - div.mOffset;
div.MoveLeft(mov);
if (tmp.CompareTo(div) < 0)
{
mov--;
div.MoveRight(1);
}
tmp.Substract(div);
if (tmp.CompareTo(Zero) >= 0)
{
sum.SetABit(mov);
Add(sum);
div.MoveRight(mov);
}
else
{
break;
}
}
}
