Added LinearSolverInterface and two subclasses, using Umfpack and Istl.

opm/core/linalg/LinearSolverInterface.cpp

@@ -0,0 +1,44 @@
+/*
+  Copyright 2012 SINTEF ICT, Applied Mathematics.
+
+  This file is part of the Open Porous Media project (OPM).
+
+  OPM is free software: you can redistribute it and/or modify
+  it under the terms of the GNU General Public License as published by
+  the Free Software Foundation, either version 3 of the License, or
+  (at your option) any later version.
+
+  OPM is distributed in the hope that it will be useful,
+  but WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+  GNU General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with OPM.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+
+#include <opm/core/linalg/LinearSolverInterface.hpp>
+#include <opm/core/linalg/sparse_sys.h>
+#include <opm/core/linalg/call_umfpack.h>
+
+namespace Opm
+{
+
+    LinearSolverInterface::~LinearSolverInterface()
+    {
+    }
+
+
+
+
+    LinearSolverInterface::LinearSolverReport
+    LinearSolverInterface::solve(const CSRMatrix* A,
+                                 const double* rhs,
+                                 double* solution)
+    {
+        return solve(A->m, A->nnz, A->ia, A->ja, A->sa, rhs, solution);
+    }
+
+} // namespace Opm
+