public void CountBitsCleared()
{
Assert.AreEqual(32 - 0, BitMath.CountBitsCleared(0));
Assert.AreEqual(32 - 32, BitMath.CountBitsCleared(uint.MaxValue));
Assert.AreEqual(32 - 31, BitMath.CountBitsCleared(int.MaxValue));
Assert.AreEqual(32 - 1, BitMath.CountBitsCleared(short.MaxValue + 1));
Assert.AreEqual(32 - 10, BitMath.CountBitsCleared(0xF030207));
Assert.AreEqual(64 - 0, BitMath.CountBitsCleared((ulong)0));
Assert.AreEqual(64 - 32, BitMath.CountBitsCleared((ulong)uint.MaxValue));
Assert.AreEqual(64 - 31, BitMath.CountBitsCleared((ulong)int.MaxValue));
Assert.AreEqual(64 - 1, BitMath.CountBitsCleared((ulong)short.MaxValue + 1));
Assert.AreEqual(64 - 10, BitMath.CountBitsCleared((ulong)0xF030207));
int x = -1;
Assert.AreEqual(64 - 64, BitMath.CountBitsCleared(ulong.MaxValue));
Assert.AreEqual(64 - 64, BitMath.CountBitsCleared((ulong)x));
}