// Scilab ( http://www.scilab.org/ ) - This file is part of Scilab
// Copyright (C) INRIA
//
// This file must be used under the terms of the CeCILL.
// This source file is licensed as described in the file COPYING, which
// you should have received as part of this distribution.  The terms
// are also available at
// http://www.cecill.info/licences/Licence_CeCILL_V2.1-en.txt

function r=%sp_k_sp(a,b)
    //  a.*.b with a and b sparse

    [ija,va,mna]=spget(a)
    [ijb,vb,mnb]=spget(b)
    ia=ija(:,1);ja=ija(:,2)
    ib=ijb(:,1);jb=ijb(:,2)

    ij=[((ia-ones(ia))*mnb(1)).*.ones(ib)+ones(ia).*.ib,..
    ((ja-ones(ja))*mnb(2)).*.ones(jb)+ones(ia).*.jb]
    r=sparse(ij,va.*.vb,mna.*mnb)
endfunction