Quake III's or Fast InvSqrt() or 0x5F3759DF Algorithm

In 2005, a game company open-sourced the engine software for their video game Quake 3 arena and after looking in that source code fans of the game discovered an algorithm that was so ingenious it…

Quake III's or Fast InvSqrt() or 0x5F3759DF Algorithm, by whoisslimshady

Fast inverse square root - Wikipedia

PDF) SIMPLE EFFECTIVE FAST INVERSE SQUARE ROOT ALGORITHM WITH TWO MAGIC CONSTANTS

PDF) SIMPLE EFFECTIVE FAST INVERSE SQUARE ROOT ALGORITHM WITH TWO MAGIC CONSTANTS

How Fast Inverse Square Root actually works - Preetham

Algorithms in Rust: This is the infamous fast inverse square root implemented in Rust. This particular implementation was initially discovered i - Thread from Oliver Jumpertz @oliverjumpertz - Rattibha

Quakes fast inverse square root implementation is a joke by itself : r/ProgrammerHumor

cohost! - How to write your next math function in the style of John Carmack: understanding the fast inverse square root

Fast Inverse Square Root Approximation from Quake3 – fun[2] = {Soft,Firm}