[boost] Re: mpl functions, pow_, root_, reciprocal

From: David Abrahams (dave_at_[hidden])
Date: 2004-01-31 21:39:38

"Andy Little" <andy_at_[hidden]> writes:

>> These aren't very interesting metafunctions, since they're all
>> equivalent to mpl::always<implementation_defined> ;-)
>
> Oops sorry perhaps read 'undefined',' user defined' not implementation
> defined :-)

My point was to say that you are proposing we add something to the
library, but you haven't shown us anything but a sketch of a few empty
metafunctions.  How can anyone comment?

> Not to stay that way just havent had time to write some simple examples.
> (pow_<int_,int_> should be easy!) Could use one of my own  but doesnt mean
> much to many  -->
>
> The problem is I have specialised plus, minus, multiplies etc. for use in
> 'expression templates'. (think is right term).
> However it would be odd to put these in separate namespace. 

?? Specializations can only go in the same namespace as the primary
template.

-- 
Dave Abrahams
Boost Consulting
www.boost-consulting.com