public void Bits_BitCountTest2()
{
{
const ulong kBitCountValue = 0xAAAAAAAAAAAAAAAA;
int i32;
int expected_bit_count;
expected_bit_count = Bits.kByteBitCount / 2; i32 = Bits.BitCount(unchecked ((byte)kBitCountValue));
Assert.AreEqual(expected_bit_count, i32);
expected_bit_count = Bits.kInt16BitCount / 2; i32 = Bits.BitCount(unchecked ((ushort)kBitCountValue));
Assert.AreEqual(expected_bit_count, i32);
expected_bit_count = Bits.kInt32BitCount / 2; i32 = Bits.BitCount(unchecked ((uint)kBitCountValue));
Assert.AreEqual(expected_bit_count, i32);
expected_bit_count = Bits.kInt64BitCount / 2; i32 = Bits.BitCount(kBitCountValue);
Assert.AreEqual(expected_bit_count, i32);
}
{
uint u32;
ulong u64;
u32 = Bits.BitCountToMask32(Bits.kInt32BitCount);
Assert.AreEqual(u32, uint.MaxValue);
u32 = Bits.BitCountToMask32(Bits.kInt32BitCount - 1);
Assert.AreEqual(u32, uint.MaxValue >> 1);
u64 = Bits.BitCountToMask64(Bits.kInt64BitCount);
Assert.AreEqual(u64, ulong.MaxValue);
u64 = Bits.BitCountToMask64(Bits.kInt64BitCount - 1);
Assert.AreEqual(u64, ulong.MaxValue >> 1);
}
}
