public BigInteger Add(BigInteger value)
{
if (this.sign == 0)
{
return value;
}
if (this.sign == value.sign)
{
return this.AddToMagnitude(value.magnitude);
}
if (value.sign == 0)
{
return this;
}
if (value.sign < 0)
{
return this.Subtract(value.Negate());
}
return value.Subtract(this.Negate());
}
public BigInteger Subtract(BigInteger n)
{
BigInteger integer;
BigInteger integer2;
if (n.sign == 0)
{
return this;
}
if (this.sign == 0)
{
return n.Negate();
}
if (this.sign != n.sign)
{
return this.Add(n.Negate());
}
int num = CompareNoLeadingZeroes(0, this.magnitude, 0, n.magnitude);
if (num == 0)
{
return Zero;
}
if (num < 0)
{
integer = n;
integer2 = this;
}
else
{
integer = this;
integer2 = n;
}
return new BigInteger(this.sign * num, doSubBigLil(integer.magnitude, integer2.magnitude), true);
}
