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Optimizations enabled by -ffast-math – Krister Walfridsson's blog – Compilers, programming languages, etc.
https://kristerw.github.io/2021/10/19/fast-math/
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This blog post describes the optimizations enabled by -ffast-math when compiling C or C++ code with GCC 11 for x86_64 Linux (other languages/operating systems/CPU architectures may enable slightly different optimizations).
