MAKE_TRAITS_FOR_ARITHMETIC_SECONDARY_KEY

#define MAKE_TRAITS_FOR_ARITHMETIC_SECONDARY_KEY

(

TYPE

)

Макроопределение:

template<>\
struct secondary_key_traits<TYPE> {\
   static_assert( std::numeric_limits<TYPE>::is_specialized, "TYPE does not have specialized numeric_limits" );\
   static constexpr TYPE true_lowest() { return std::numeric_limits<TYPE>::lowest(); }\
};

См. определение в файле multi_index.hpp строка 298