Thursday: the week's almost over and it's time for another code puzzler. The idea is simple: solve the coding problem as efficiently as you can, in any language or framework that you find suitable.
Note: Even though there really is nothing stopping you from finding a solution to this on the internet, try to keep honest, and come up with your own answer. It's all about the participation!
Write a function that computes the square of a number without using *, ^, or +.
Catch up on all our previous puzzlers here