https://www.youtube.com/watch?v=p8u_k2LIZyoFast Inverse Square Root — A Quake III AlgorithmIn this video we will take an in depth look at the fast inverse square root and see where the mysterious number 0x5f3759df comes from. This algorithm became ...www.youtube.com유명하신 과메기 형님의 1/sqrt(n) 최적화.난 못알아듣겠음.
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