/// <summary>
/// Signed addition built upon unsigned add and subtract.
/// </summary>
internal virtual void SignedAdd(MutableBigInteger addend)
{
if (Sign == 1)
{
Add(addend);
}
else
{
Sign = Sign * Subtract(addend);
}
}
/// <summary>
/// Signed subtraction built upon unsigned add and subtract.
/// </summary>
internal virtual void SignedSubtract(MutableBigInteger addend)
{
if (Sign == 1)
{
Sign = Sign * Subtract(addend);
}
else
{
Add(addend);
}
if (IntLen == 0)
{
Sign = 1;
}
}
/// <summary>
/// Construct a new MutableBigInteger with a magnitude equal to the
/// specified MutableBigInteger.
/// </summary>
internal SignedMutableBigInteger(MutableBigInteger val) : base(val)
{
}