[Webnucleo] ANNOUNCE: wn_matrix version 0.8 now available

[Announce list for the Webnucleo project.]

Release 0.8 of Webnucleo's wn_matrix Module is now publicly available.
wn_matrix is a library of codes for storing and managing sparse matrices.

The module is available at this location:

http://www.webnucleo.org/home/modules/wn_matrix/0.8

  Below are the recent updates to the module:

        New:

        A new "arrow" matrix structure, WnMatrix__Arrow, has been added
        along with an efficient Gaussian elimination solver,
        WnMatrix__Arrow__solve( ), based on it.

        A new technical report describes the WnMatrix__Arrow structure and
        its associated solver.

        New examples demonstrate the WnMatrix__Arrow API.

        Fix:

        A number of typos in the API documentation have been fixed.

        Reorganization:

        The routine WnMatrix__Coo__writeToXmlFile( ),
        WnMatrix__Csr__writeToXmlFile( ), WnMatrix__Yale__writeToXmlFile( ),
        and WnMatrix__write_gsl_vector_to_xml( )
        now allow the user to provide a format code for the outputting
        the matrix element or vector component value.  Since the format
        code is required (even for the default--%g), this is a backwards
        incompatibility.  Examples have been modified to demonstrate these
        changes.

        Matrix element assignments and retrievals in some of the examples
        have been simplified.

        Unsigned longs have been changed to size_t's in some examples.

        Rows and columns are now correctly sorted because
        matrix indices are now compared by their long int values instead of
        their string values.