My initial reasoning was based on this: I analysed performance of some C++03 code, that uses Boost.Chrono. And I discovered, that a lot of trivial functions didn't get inlined. So now, narrowing the question to use of BOOST_CONSTEXPR in Boost.Chrono: 1. Could the functions marked BOOST_CONSTEXPR be also marked inline (and this question probably applies to other Boost libraries)? 2. This is probably related only to the TI compiler I use: marking constructors inline doesn't work for me, they need to be marked BOOST_FORCEINLINE (I've configured it), so could the constexpr constructors in Boost.Chrono be marked with BOOST_FORCEINLINE as well?
If you mean: BOOST_FORCEINLINE BOOST_CONSTEXPR T foo(); Then yes, that's what Multiprecision does for performance critical functions. John.