//Subtracts the absolute values of two InfInt's
private InfInt SubtractPositives(InfInt addValue)
{
InfInt temp = new InfInt();
InfInt tempThis = new InfInt();
tempThis.EqualTo(this);
//iterate the infint
for (int i = DIGITS - 1; i >= 0; i--)
{
int j = i;
//Borrow
if (tempThis.Integer[i] < addValue.Integer[i])
{
j--;
while (tempThis.Integer[j] == 0)
{
tempThis.Integer[j] -= 1;
j--;
}
tempThis.Integer[j] -= 1;
j++;
while (j <= i)
{
tempThis.Integer[j] += 10;
j++;
}
}
temp.Integer[i] = tempThis.Integer[i] - addValue.Integer[i];
}
return(temp);
}
