When I define a constexpr function, should I also declare it as noexcept? I imagine in the case where the arguments and usage satisfy the requirements for compile-time evaluation, the meaning of potential exceptions is moot. But it would apply as normal for cases when the function is evaluated at run time.
As a matter of practical concern, if the function is indeed simple, perhaps using built-in arithmetic or a cast, such that I expect the compiler can always inline the function and optimize across it, does it matter to the efficiency of the generated code if I leave off noexcept?
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