If you're interested in this stuff, bit-twiddling hacks: https://graphics.stanford.edu/~seander/bithacks.html https://graphics.stanford.edu/~seander/bithacks.ht

If you're interested in this stuff, bit-twiddling hacks: https://graphics.stanford.edu/~seander/bithacks.html https://graphics.stanford.edu/~seander/bithacks.html Some things are due to an algorithmical trick, while others are a translation trick. Some are both.