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

From: Aleksey Gurtovoy (agurtovoy_at_[hidden])
Date: 2004-01-25 20:09:13

Andy Little wrote:
> Hi,

Hi Andy,

> I am implementing the mpl math operators for my physical_quantities type.
> Ideally I would like to declare a boost::mpl::power<A,B> 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?

Yes, totally.

> I could of course put power (or whatever name) outside
> the boost::mpl namespace but that is not ideal. Any thoughts?

If you contribute an implementation for it, I'd be happy to put the
metafunction in the library.

--
Aleksey Gurtovoy
MetaCommunications Engineering