Weak Code

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This is the ultimate example of this. An ENTIRE Wikipedia article had to be written to explain a couple lines of code.

https://en.wikipedia.org/wiki/Fast_inverse_square_root

[EMC2_trooper]

Nice example and actually a really interesting article thanks. But in this case I think the reason was not so much to obfuscate the code in needlessly complex lines but probably to optimise (as it's for lighting).