public override uint CalculateHash(byte[] data, int length)
{
if (length > data.Length)
{
throw new ArgumentOutOfRangeException("length");
}
unsafe
{
fixed(byte *data8 = data)
{
ulong hash = 0;
ulong key = 0;
ulong *data64 = (ulong *)data8;
for (int i = length / 8; i > 0; --i)
{
hash = MMX.PAddW(hash, 0xA35793A7A35793A7ul);
key = MMX.PAddW(key, *data64++ ^ hash);
key = MMX.PSllD(key, 3) | MMX.PSrlD(key, 29);
}
// MMX.PMAddWD (key, key >> 32);
return((uint)((short)key * (short)(key >> 32) + (short)(key >> 16) * (short)(key >> 48)));
}
}
}
