0x5f3759df
http://h14s.p5r.org/2012/09/0x5f3759df.html?mwh=1
This post is about the magic constant 0x5f3759df and an extremely neat hack, fast inverse square root, which is where the constant comes from.
http://h14s.p5r.org/2012/09/0x5f3759df.html?mwh=1
This post is about the magic constant 0x5f3759df and an extremely neat hack, fast inverse square root, which is where the constant comes from.