NaN propagation in exponential function
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- C++
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Description
When applying the `Exp` function to `NaN` on my CPU (Intel i7-1185G7 using the AVX3_DL target) the function returns `0.0` instead of the `NaN` that I expected (and that `std::exp` returns).
Is this a bug or performance-related feature of the highway `Exp` function?
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