--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/liboctave/fCmplxAEPBAL.cc	Wed May 21 09:36:46 2008 -0400
@@ -0,0 +1,102 @@
+/*
+
+Copyright (C) 1994, 1995, 1996, 1997, 2000, 2002, 2003, 2004, 2005,
+              2007 John W. Eaton
+
+This file is part of Octave.
+
+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 3 of the License, 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 Octave; see the file COPYING.  If not, see
+<http://www.gnu.org/licenses/>.
+
+*/
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <string>
+
+#include "fCmplxAEPBAL.h"
+#include "fMatrix.h"
+#include "f77-fcn.h"
+
+extern "C"
+{
+  F77_RET_T
+  F77_FUNC (cgebal, CGEBAL) (F77_CONST_CHAR_ARG_DECL, const octave_idx_type&,
+			     FloatComplex*, const octave_idx_type&,
+			     octave_idx_type&, octave_idx_type&, float*,
+			     octave_idx_type& F77_CHAR_ARG_LEN_DECL);
+ 
+  F77_RET_T
+  F77_FUNC (cgebak, CGEBAK) (F77_CONST_CHAR_ARG_DECL, F77_CONST_CHAR_ARG_DECL,
+			     const octave_idx_type&, const octave_idx_type&,
+			     const octave_idx_type&, float*,
+			     const octave_idx_type&, FloatComplex*,
+			     const octave_idx_type&, octave_idx_type&
+			     F77_CHAR_ARG_LEN_DECL  F77_CHAR_ARG_LEN_DECL);
+}
+
+octave_idx_type
+FloatComplexAEPBALANCE::init (const FloatComplexMatrix& a,
+			 const std::string& balance_job)
+{
+  octave_idx_type n = a.cols ();
+
+  if (a.rows () != n)
+    {
+      (*current_liboctave_error_handler) ("AEPBALANCE requires square matrix");
+      return -1;
+    }
+
+  octave_idx_type info;
+  octave_idx_type ilo;
+  octave_idx_type ihi;
+
+  Array<float> scale (n);
+  float *pscale = scale.fortran_vec ();
+
+  balanced_mat = a;
+  FloatComplex *p_balanced_mat = balanced_mat.fortran_vec ();
+
+  char job = balance_job[0];
+
+  F77_XFCN (cgebal, CGEBAL, (F77_CONST_CHAR_ARG2 (&job, 1),
+			     n, p_balanced_mat, n, ilo, ihi,
+			     pscale, info
+			     F77_CHAR_ARG_LEN (1)));
+
+  balancing_mat = FloatComplexMatrix (n, n, 0.0);
+  for (octave_idx_type i = 0; i < n; i++)
+    balancing_mat.elem (i, i) = 1.0;
+
+  FloatComplex *p_balancing_mat = balancing_mat.fortran_vec ();
+
+  char side = 'R';
+
+  F77_XFCN (cgebak, CGEBAK, (F77_CONST_CHAR_ARG2 (&job, 1),
+			     F77_CONST_CHAR_ARG2 (&side, 1),
+			     n, ilo, ihi, pscale, n,
+			     p_balancing_mat, n, info
+			     F77_CHAR_ARG_LEN (1)
+			     F77_CHAR_ARG_LEN (1)));
+
+  return info;
+}
+
+/*
+;;; Local Variables: ***
+;;; mode: C++ ***
+;;; End: ***
+*/