new file mode 100644
--- /dev/null
+++ b/liboctave/sparse-base-lu.cc
@@ -0,0 +1,70 @@
+/*
+
+Copyright (C) 2004 David Bateman
+Copyright (C) 1998-2004 Andy Adler
+
+Octave 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 2, or (at your option) any
+later version.
+
+Octave 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 this program; see the file COPYING.  If not, write to the Free
+Software Foundation, 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+
+*/
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include "sparse-base-lu.h"
+
+template <class lu_type, class lu_elt_type, class p_type, class p_elt_type>
+p_type
+sparse_base_lu <lu_type, lu_elt_type, p_type, p_elt_type> :: Pr (void) const
+{
+  int nr = Lfact.rows ();
+
+  p_type Pout (nr, nr, nr);
+
+  for (int i = 0; i < nr; i++)
+    {
+      Pout.cidx (i) = i;
+      Pout.ridx (P (i)) = i;
+      Pout.data (i) = 1;
+    }
+  Pout.cidx (nr) = nr;
+
+  return Pout;
+}
+
+template <class lu_type, class lu_elt_type, class p_type, class p_elt_type>
+p_type
+sparse_base_lu <lu_type, lu_elt_type, p_type, p_elt_type> :: Pc (void) const
+{
+  int nc = Ufact.cols ();
+
+  p_type Pout (nc, nc, nc);
+
+  for (int i = 0; i < nc; i++)
+    {
+      Pout.cidx (i) = i;
+      Pout.ridx (i) = Q (i);
+      Pout.data (i) = 1;
+    }
+  Pout.cidx (nc) = nc;
+
+  return Pout;
+}
+
+/*
+;;; Local Variables: ***
+;;; mode: C++ ***
+;;; End: ***
+*/