Re: [ublas] bounded_matrix and external buffers

From: Gunter Winkler (guwi17_at_[hidden])
Date: 2005-08-30 08:00:40

On Tuesday 30 August 2005 14:36, Adi Shavit wrote:
> Is there another group I should post this to?

No, this group is right.

> >  I have some newbie questions regarding the use of bounded_matrix.
> >
> >   1. Since the size of a bounded_matrix is known at compile time, are
> >      operations like dot product between incompatible matrix sizes
> >      caught at compile time?

IMHO, no. The difference between bounded and unbounded storage is that 
bounded_array (bounded_matrix & bounded_vector) has a maximum size and data 
is stored on the stack. unbounded_array stores the data on the heap and has 
no artificial size limit.

There are other types: fixed_matrix and fixed_vector that have a fixed size. 
However, they are essentially a bounded_matrix and a bounded_vector.

> >   2. Is it possible to set the storage for the matrix values to be an
> >      externally supplied buffer  (C array)?

yes. the type is carray_adaptor. Please look at the current CVS version for 
the documentation of it.

mfg
GUnter