It seems to pre-date that: https://en.wikipedia.org/wiki/Fast_inverse_square_root#History_and_investigation https://en.wikipedia.org/wiki/Fast_inverse_square_r

It seems to pre-date that: https://en.wikipedia.org/wiki/Fast_inverse_square_root#History_and_investigation https://en.wikipedia.org/wiki/Fast_inverse_square_root#Histo...