Why does GCC or Clang not optimise reciprocal to 1 instruction when using fast-math...

Which specific optimization flag causes libm functions to be treated as pure?...

Does any floating point-intensive code produce bit-exact results in any x86-based architecture?...

What does gcc's ffast-math actually do?...

Mingw32 std::isnan with -ffast-math...

What is floating point speculation and how does it differ from the compiler's floating point mod...

Why can't the Rust compiler auto-vectorize this FP dot product implementation?...

Negative NaN is not a NaN?...

Weird LTO behavior with -ffast-math...

C++ gcc does associative-math flag disable float NAN values?...

Auto vectorization on double and ffast-math...

std::isinf does not work with -ffast-math. how to check for infinity...

Can this piece of code be modified such that it works with fast-math enabled?...

Why doesn't GCC optimize a*a*a*a*a*a to (a*a*a)*(a*a*a)?...

Optimal implementation of iterative Kahan summation...

Do denormal flags like Denormals-Are-Zero (DAZ) affect comparisons for equality?...

Is there a -ffast-math flag equivalent for the Visual Studio C++ compiler...

Strict aliasing, -ffast-math and SSE...

Why is std::inner_product slower than the naive implementation?...

Dynamic -ffast-math...

gcc optimizations cause app to fail...

Can I make my compiler use fast-math on a per-function basis?...

gcc -Ofast - complete list of limitations...

AVX code segfaults when compiled with -ffast-math?...

What exactly -ffast-math option does while compiling with gcc...

Does -use-fast-math option translate SP multiplications to intrinsics?...