Sashan, I can provide you with symmetric matrix diagonalization code written using uBLAS, if you need something before the LAPACK bindings are complete. The code is LGPLed. Backchannel me for more info. -Tim Robertson On Wed, 15 Oct 2003, Kresimir Fresl wrote:

sashan wrote:

...

I was looking for a way to solve a linear system using ublas and came upon this thread

http://article.gmane.org/gmane.comp.lib.boost.user/1632

So does this mean I have to decompose my matrix? Can I do it using ublas?

Well ... yes and no ;o)

ublas is BLAS (i.e. Basic Linear Algebra Subroutines) written in C++, so it provides (only) elementary vector and matrix operation (scaling, addition, matrix/vector and matrix/matrix multiplication etc.).

But we are developing `bindings' library which provides interfaces to some Fortran and C numeric libraries, e.g. ATLAS and LAPACK, so that they can be used with ublas matrices and vectors.

Current version of `bindings' library (not complete, but IMHO useable) can be found in the boost sandbox

http://tinyurl.com/r1ch

with documentation and examples in

http://tinyurl.com/r1cv

You can also download complete zip archive from the files section of the ublas-dev mailing list

http://groups.yahoo.com/group/ublas-dev/files/

(I think that you must join the mailing list to access the files:

ublas-dev-subscribe@yahoogroups.com .)

See also

http://tinyurl.com/r1e7 http://tinyurl.com/r1ee

(although some details on the last page are a bit outdated ;o).

Regards,

fres

_______________________________________________ Boost-users mailing list Boost-users@lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users