CXXD_HAS_STD_ATOMIC — Determines whether the C++ standard atomic implementation or the Boost atomic implementation has been chosen.
// In header: <boost/cxx_dual/impl/atomic.hpp> CXXD_HAS_STD_ATOMIC
The object-like macro expands to: 1 if the C++ standard atomic implementation has been chosen 0 if the Boost atomic implementation has been chosen.
