Fast inverse square root in golang

[yan-aint-nickname]

I've implemented Fast inverse square root in golang, I didn't see it on a website(only in Java). Is it worth it to make a PR to the repo
Gist with code is below
https://gist.github.com/yan-aint-nickname/7be20c6903e4d434a3d04d788b5fcdb1

[raklaptudirm]

Instead of using the original comments, you should replace them with something more informative so the person reading it can learn something instead of just being confused. It is worthy of a pull request.

[tjgurwara99]

Just an fyi, this already exists in https://github.com/TheAlgorithms/Go/blob/6429dfdb87ad0b2ae462f42f5307b6c0bcaca5c4/math/binary/sqrt.go