Re: [ublas] compilation error (BOOST_STATIC_ASSERT) in a matrix expression

From: Daniele (asloxx_at_[hidden])
Date: 2007-10-16 07:29:11

Thanks Karl, so I guess I'll just use a temporary.
By the way, is this documented anywhere? I can't find it on boost.org. If
not, probably it should be stated clearly.

Daniele

On 10/16/07, Karl Meerbergen <Karl.Meerbergen_at_[hidden]> wrote:
>
> Daniele wrote:
>
> > Ok, in a hurry, I think I've make some mistakes, but I've tracked down
> > the problem to this:
> >     ublas::matrix<double> A(2, 2), B(2, 2), C(2, 2);
> >     // initialize A and B ...
> >     C = prod(A, ublas::matrix<double>(prod(B, A))); // C = A*B*A  this
> > works
> >     C = prod(A, prod(B, A)); // C = A*B*A  this doesn't work
>
>
> Nested prod is not allowed I think. You should use a temporary for
> storing prod(B,A).
>
> Karl
>
>
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