Re: [ublas] addition of sparse_matrix: compilation problem

From: Gunter Winkler (guwi17_at_[hidden])
Date: 2005-07-08 02:54:29

On Friday 08 July 2005 09:13, M.Deij_at_[hidden] wrote:
> Hello,
>
> I've got a problem compiling the next example:
>
>   sparse_matrix<unsigned> *m, *n, *r;
>   m = new sparse_matrix<unsigned>(3,3);
>   n = new sparse_matrix<unsigned>(3,3);
>   r = new sparse_matrix<unsigned>(3,3);

sparse_matrix was recently renamed to mapped_matrix. You should try the CVS 
version of ublas.

> I'm not sure if it's a 64-bit problem (P4 vs Opteron) or a gcc version
> problem. Anybody got any ideas? The errors I get are listed below:

I'd like to guess, what the problem is without running the compiler: 

You tried to do a debug build of a matrix containing integers. There is a 
type_traits missing that defines 'real_type' for any integer type, but this 
trait is needed by some debug checks (Should we add this?).

As a quick&dirty fix you can uncomment the lines 64-65:

        typedef T real_type;
        typedef T precision_type;

in traits.hpp.

Please check if the example compiles using the "-DNDEBUG" compiler flag.

mfg
Gunter