synopsis: Jumping through hoops to write the famous Quake 3 code in Python. The inverse square root of a number x is x^-1/2. For example, put in 25, you'll get back 0.2: the square root of ...

If you've marvelled at the Fast Inverse Square Root method and want to use this piece of witchcraft to speed up your Python code, stop! Just stick with writing x ** -0.5. It will be much faster than ...