Re: [Boost-users] Matrix of submatricies...

From: Edson Tadeu (e.tadeu_at_[hidden])
Date: 2005-09-15 12:05:38

Sparse BLAS implements some operations for this type of matrix (look
for zbdimm), although its interface is in C (no generic programming).
Maybe someone could port those routines to uBlas.

On 9/15/05, Edward Grace <ej.grace_at_[hidden]> wrote:
> Dear all,
> 
> [you may need a fixed with font]
> 
> Consider the following 4x4 matrix which is a 2x2 matrix of submatricies.
> 
> 
> A B | 0 0
> C D | 0 0
> ----+----
> 0 0 | a b
> 0 0 | c d
> 
> Clearly matrix operations such as products do not need to involve the off
> diagonal (zero) sub matricies.  Is there a matrix type that "knows" about
> this type of matrix so that when prod() is carried out it does not do
> unnecessary operations with the zero elements?
> 
> 
> -ed
> _______________________________________________
> Boost-users mailing list
> Boost-users_at_[hidden]
> http://lists.boost.org/mailman/listinfo.cgi/boost-users
>