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