[Boost-users] boost::mpl:: operators ...power metafunction?

Hi, I am implementing the mpl math operators for my physical_quantities type. Ideally I would like to declare a boost::mpl::power metafunction. I would like to do: typedef Power_type<...> P ; pq_xx a; boost::mpl::power< pq_xx, P >::type b = run_time_power<P>( a); OTOH: boost::mpl::power< P, pq_xx >::type b = run_time_power<P>( a); (param order ... TBD) I am assuming it is ok to specialise plus, minus, multiplies etc in the boost::mpl namespace? I could of course put power (or whatever name) outside the boost::mpl namespace but that is not ideal. Any thoughts? regards Andy Little