Le 19 janvier 2012 17:52, Jonathan Sauer <[email protected]> a écrit :
> >> Do you know if the same apply (I would guess so) to std::strlen ? > >> > >> It seems a pity that such a trivial function could not be constexpr as > making it constexpr is actually dead simple. I wonder if it would be worth > a Defect Report. > >> > > This would seem very reasonable to me... > > As well as a lot (all?) of the math functions in cmath. And clang's > built-ins (__builtin_sin etc), too. > > > What do you think? > Jonathan > I haven't followed the C11 proposal, is the "constexpr" idea addressed there or would it be a specific C++ issue ? C++ imports a massive amount of C functions, and keeping their signature as-is will be a hindrance, I don't fancy the idea of recoding them all in pure C++ to allow such optimizations! It seems like at least the `std::` versions could be made `constexpr` when possible. I am putting Howard in copy since this seems something libc++ would be interested in, and perhaps his C++ committee experience could help us here. -- Matthieu
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