How do I use the bitwise operator XOR in Lua?

Question

How can I implement bitwise operators in Lua language?
Specifically, I need a XOR operator/method.

Answer 1

If you're needing an efficient way to do bitwise shifts, I wrote an article about that a while ago. Here's some functions which wrap the technique:

function lshift(x, by)
  return x * 2 ^ by
end

function rshift(x, by)
  return math.floor(x / 2 ^ by)
end