public unsafe void Hash128PtrOverloads()
{
ulong seed1 = 238929482;
ulong seed2 = 19384920392;
string testString = "This is a test string";
ulong hash1 = seed1;
ulong hash2 = seed2;
fixed(void *ptr = testString)
{
int len = testString.Length * 2;
SpookyHash.Hash128(ptr, len, ref hash1, ref hash2);
HashCode128 hc = new HashCode128(hash1, hash2);
Assert.Equal(hc, SpookyHash.Hash128((UIntPtr)ptr, len, seed1, seed2));
Assert.Equal(hc, SpookyHash.Hash128((UIntPtr)ptr, len, (long)seed1, (long)seed2));
Assert.Equal(hc, SpookyHash.Hash128((IntPtr)ptr, len, seed1, seed2));
Assert.Equal(hc, SpookyHash.Hash128((IntPtr)ptr, len, (long)seed1, (long)seed2));
}
SpookyHash.Hash128(default(void *), 50, ref hash1, ref hash2);
Assert.Equal(0UL, hash1);
Assert.Equal(0UL, hash2);
Assert.Equal(HashCode128.Zero, SpookyHash.Hash128(UIntPtr.Zero, 50, seed1, seed2));
Assert.Equal(HashCode128.Zero, SpookyHash.Hash128(UIntPtr.Zero, 50, (long)seed1, (long)seed2));
Assert.Equal(HashCode128.Zero, SpookyHash.Hash128(IntPtr.Zero, 50, seed1, seed2));
Assert.Equal(HashCode128.Zero, SpookyHash.Hash128(IntPtr.Zero, 50, (long)seed1, (long)seed2));
}
private static unsafe HashCode128 SpookyHash128Unchecked(string message, int startIndex, int length, ulong seed0, ulong seed1)
{
fixed(char *ptr = message)
{
SpookyHash.Hash128(ptr + startIndex, length << 1, ref seed0, ref seed1);
}
return(new HashCode128(seed0, seed1));
}
public unsafe void TestPieces()
{
byte[] bufArr = new byte[BufferSize];
for (int i = 0; i < BufferSize; ++i)
{
bufArr[i] = unchecked ((byte)i);
}
for (int i = 0; i < BufferSize; ++i)
{
ulong a, b, c, d, seed1 = 1, seed2 = 2;
SpookyHash state = new SpookyHash();
// all as one call
a = seed1;
b = seed2;
fixed(byte *buf = bufArr)
{
SpookyHash.Hash128(buf, i, ref a, ref b);
}
// all as one piece
c = 0xdeadbeefdeadbeef;
d = 0xbaceba11baceba11;
state.Init(seed1, seed2);
fixed(byte *buf = bufArr)
{
state.Update(buf, i);
}
state.Final(out c, out d);
Assert.Equal(a, c);
Assert.Equal(b, d);
for (int j = 0; j < i; ++j)
{
c = seed1;
d = seed2;
state.Init(c, d);
fixed(byte *buf = bufArr)
{
state.Update(buf, j);
state.Update(buf + j, i - j);
}
state.Final(out c, out d);
Assert.Equal(a, c);
Assert.Equal(b, d);
}
}
}
private static void HashOrig(uint n, ref ulong hash1, ref ulong hash2)
{
unsafe {
SpookyHash.Hash128(&n, sizeof(uint), ref hash1, ref hash2);
}
}