Re: [Boost-users] Boost.Units and Ublas and Math

From: Steven Watanabe (watanabesj_at_[hidden])
Date: 2008-06-26 00:02:24

AMDG

Matthias Schabel wrote:
> The problem being that ublas currently does not correctly resolve the 
> value type for arithmetic operations. For "normal" numeric types, even 
> if not strictly correct, this is usually not a problem : the type of 
> vector<double>*vector<double> is vector<double>. Since all the unit 
> magic in Boost.Units is encoded in the types, this isn't true with 
> quantities : the type of vector<quantity<length> 
> >*vector<quantity<length> > is vector<quantity<area> >... In 
> principle, this could be fixed, but would require a significant amount 
> of effort on the part of the ublas maintainers.

I've started working on it, and it's actually pretty easy.
I already have matrix multiplication working.

In Christ,
Steven Watanabe