Bitset

gistfile1.cs

[StructLayout(LayoutKind.Sequential, Size = 256)]
public unsafe struct Bitset
{
	public void Set(int bitIndex) => ((int*) Unsafe.AsPointer(ref Unsafe.AsRef(this)))[(bitIndex & ~7) >> 5] |= 1 << (bitIndex & 7);
	public void Unset(int bitIndex) => ((int*)Unsafe.AsPointer(ref Unsafe.AsRef(this)))[(bitIndex & ~7) >> 5] ^= 1 << (bitIndex & 7);
	public void SetAll() => Unsafe.InitBlock(Unsafe.AsPointer(ref Unsafe.AsRef(this)), 0xff, (uint) Unsafe.SizeOf<Bitset>());
	public void UnsetAll() => Unsafe.InitBlock(Unsafe.AsPointer(ref Unsafe.AsRef(this)), 0x00, (uint) Unsafe.SizeOf<Bitset>());
}