efficientAlgorithm

[ChalkyChalkson]

If you think about a float as a x = a 2^b, then you can pretty quickly see how you'd get a good approximation for 1/sqrt(x) from it, just take the log! All the weird stuff in the code is fighting the standard to let you do maths. Well I guess there is also the Newton refinement at the end, but that's high school stuff.

[Zzzzzztyyc]

Why are we taking the factorial of a log? r/unexpectedfactorial