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diff --git a/hwpfilter/source/solver.h b/hwpfilter/source/solver.h
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+/*************************************************************************
+ *
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * Copyright 2000, 2010 Oracle and/or its affiliates.
+ *
+ * OpenOffice.org - a multi-platform office productivity suite
+ *
+ * This file is part of OpenOffice.org.
+ *
+ * OpenOffice.org is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License version 3
+ * only, as published by the Free Software Foundation.
+ *
+ * OpenOffice.org 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 Lesser General Public License version 3 for more details
+ * (a copy is included in the LICENSE file that accompanied this code).
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * version 3 along with OpenOffice.org.  If not, see
+ * <http://www.openoffice.org/license.html>
+ * for a copy of the LGPLv3 License.
+ *
+ ************************************************************************/
+
+#ifndef _SOLVER_H_
+#define _SOLVER_H_
+
+class mgcLinearSystemD
+{
+public:
+  mgcLinearSystemD() {;}
+
+  double** NewMatrix (int N);
+  void DeleteMatrix (int N, double** A);
+  double* NewVector (int N);
+
+  int Solve (int N, double** A, double* b);
+  // Input:
+  //     A[N][N] coefficient matrix, entries are A[row][col]
+  //     b[N] vector, entries are b[row]
+  // Output:
+  //     return value is TRUE if successful, FALSE if pivoting failed
+  //     A[N][N] is inverse matrix
+  //     b[N] is solution x to Ax = b
+};
+
+#endif