private static IEnumerable <uint> GetSeedsFromIVs(RNG method, uint a, uint b)
{
Debug.Assert(a >> 15 == 0);
Debug.Assert(b >> 15 == 0);
uint second = a << 16;
uint first = b << 16;
var pairs = method.RecoverLower16Bits(first, second)
.Concat(method.RecoverLower16Bits(first, second ^ 0x80000000));
foreach (var z in pairs)
{
yield return(z);
yield return(z ^ 0x80000000); // sister bitflip
}
}
private static IEnumerable <uint> GetSeedsFromPID(RNG method, uint a, uint b)
{
Debug.Assert(a >> 16 == 0);
Debug.Assert(b >> 16 == 0);
uint second = a << 16;
uint first = b << 16;
return(method.RecoverLower16Bits(first, second));
}