It's not even that complex. Arguably it is simpler than the way that you would otherwise do inverse square root, you could write a 5-line comment that anyone w

It's not even that complex. Arguably it is simpler than the way that you would otherwise do inverse square root, you could write a 5-line comment that anyone who's understood high school calculus could decipher, it's drop-in/drop-out, and doesn't need to be maintained.