[valarauca1]

Horrible article.

First the implementation solves for the 'Inverse Square Root', not the square root. [1] Secondly the algorithm's author isn't actually known but the earliest person it can be traced too is Gary Tarolli [1].

[1] https://en.wikipedia.org/wiki/Fast_inverse_square_root

It really bothers me when people write something and their own sources differ from what their writing let alone wikipedia.