Quake III & the reciprocal square root

In the C source code of the famous game “Quake III — Arena” you can find an incredibly efficient piece of code that seems totally insane and incomprehensible! It is the code for computing the…

Quake-III-Algorithm-Fast-Square-Root/README.md at main

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Quake-III-Arena/code/game/q_shared.h at master · id-Software/Quake

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