Update math/inv_sqrt.cpp

Co-authored-by: David Leal <halfpacho@gmail.com>
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Bensuperpc 2021-08-29 17:15:38 +02:00 committed by GitHub
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/**
* @file
* @brief Calculate the inverse inverse root.
* @brief Implementation of [Fast Inverse Square Root](https://medium.com/hard-mode/the-legendary-fast-inverse-square-root-e51fee3b49d9).
* @details
* Two implementation to calculate inverse inverse root,
* from Quake III Arena (C++ version) and with a standard library (`cmath`)