private Int128(ulong s1, ulong s0)
{
this.u = new UInt128(s1, s0);
}
private Int128(UInt128 u)
{
this.u = u;
}
/// <summary>
/// Compares two 128-bit integers.
/// </summary>
/// <param name="x">The first integer.</param>
/// <param name="y">The second integer.</param>
/// <returns>1 if <paramref name="x"/> is greater, -1 if <paramref name="y"/> is greater,
/// and 0 if <paramref name="x"/> and <paramref name="y"/> are equal.</returns>
public static int Compare(Int128 x, Int128 y)
{
return(UInt128.Compare(x.u ^ mask, y.u ^ mask));
}