Re: [boost] different matrix library?

Subject: Re: [boost] different matrix library?
From: joel (joel.falcou_at_[hidden])
Date: 2009-08-14 13:41:33

Paul A. Bristow wrote:
> This is a really good idea - but can appear (and be!) quite complicated - if
> you want an example of policies and their use, you might like to look at the
> documentation (and the source code later) of John Maddock's Boost Math
> Toolkit
I do something similar. In NT2, the target audience is matlab user with 
few to no "computer knowledge". So when you go :

matrix<> m;

it's a real matlab matrix (2D, contiguous, using double, column first 
storage).

Then you discover you need somethign else, liek using float and have a 
static storage :

matrix<flaot, settings( storage<static_>::OfSize<25,25> ) > m;

then a computer savvy guy told you that you're better use dynamic one 
and turn on unrolling :

matrix<float, settings( unroll<8> ) > m;

etc ...

There is something like 12 policies famillies, all with meaningful 
default. So the less you know, the less you care.But if you need 
something, the option is here. Then matrix class is a mere mepty shell 
that contains a NRC array and tons of meta-functiosn to build itself 
accrodingly to the policies.

-- 
___________________________________________
Joel Falcou - Assistant Professor
PARALL Team - LRI - Universite Paris Sud XI
Tel : [phone]