new file mode 100644
--- /dev/null
+++ b/liboctave/floatGEPBAL.cc
@@ -0,0 +1,130 @@
+/*
+
+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 <vector>
+
+#include "floatGEPBAL.h"
+#include "Array-util.h"
+#include "f77-fcn.h"
+
+extern "C"
+{
+  F77_RET_T
+  F77_FUNC (sggbal, SGGBAL) (F77_CONST_CHAR_ARG_DECL, const octave_idx_type& N,
+			     float* A, const octave_idx_type& LDA, float* B,
+			     const octave_idx_type& LDB, octave_idx_type& ILO, octave_idx_type& IHI,
+			     float* LSCALE, float* RSCALE,
+			     float* WORK, octave_idx_type& INFO
+			     F77_CHAR_ARG_LEN_DECL);
+
+  F77_RET_T
+  F77_FUNC (sggbak, SGGBAK) (F77_CONST_CHAR_ARG_DECL,
+			     F77_CONST_CHAR_ARG_DECL,
+			     const octave_idx_type& N, const octave_idx_type& ILO,
+			     const octave_idx_type& IHI, const float* LSCALE,
+			     const float* RSCALE, octave_idx_type& M, float* V,
+			     const octave_idx_type& LDV, octave_idx_type& INFO
+			     F77_CHAR_ARG_LEN_DECL
+			     F77_CHAR_ARG_LEN_DECL);
+
+}
+
+octave_idx_type
+FloatGEPBALANCE::init (const FloatMatrix& a, const FloatMatrix& b, 
+		  const std::string& balance_job)
+{
+  octave_idx_type n = a.cols ();
+
+  if (a.rows () != n)
+    {
+      (*current_liboctave_error_handler) ("FloatGEPBALANCE requires square matrix");
+      return -1;
+    }
+
+  if (a.dims() != b.dims ())
+    {
+      gripe_nonconformant ("FloatGEPBALANCE", n, n, b.rows(), b.cols());
+      return -1;
+    } 
+
+  octave_idx_type info;
+  octave_idx_type ilo;
+  octave_idx_type ihi;
+
+  OCTAVE_LOCAL_BUFFER (float, plscale, n);
+  OCTAVE_LOCAL_BUFFER (float, prscale, n);
+  OCTAVE_LOCAL_BUFFER (float, pwork, 6 * n);
+
+  balanced_mat = a;
+  float *p_balanced_mat = balanced_mat.fortran_vec ();
+  balanced_mat2 = b;
+  float *p_balanced_mat2 = balanced_mat2.fortran_vec ();
+
+  char job = balance_job[0];
+
+  F77_XFCN (sggbal, SGGBAL, (F77_CONST_CHAR_ARG2 (&job, 1),
+			     n, p_balanced_mat, n, p_balanced_mat2,
+			     n, ilo, ihi, plscale, prscale, pwork, info
+			     F77_CHAR_ARG_LEN  (1)));
+
+  balancing_mat = FloatMatrix (n, n, 0.0);
+  balancing_mat2 = FloatMatrix (n, n, 0.0);
+  for (octave_idx_type i = 0; i < n; i++)
+    {
+      OCTAVE_QUIT;
+      balancing_mat.elem (i ,i) = 1.0;
+      balancing_mat2.elem (i ,i) = 1.0;
+    }
+
+  float *p_balancing_mat = balancing_mat.fortran_vec ();
+  float *p_balancing_mat2 = balancing_mat2.fortran_vec ();
+
+  // first left
+  F77_XFCN (sggbak, SGGBAK, (F77_CONST_CHAR_ARG2 (&job, 1),
+			     F77_CONST_CHAR_ARG2 ("L", 1),
+			     n, ilo, ihi, plscale, prscale,
+			     n, p_balancing_mat, n, info
+			     F77_CHAR_ARG_LEN (1)
+			     F77_CHAR_ARG_LEN (1)));
+      
+  // then right
+  F77_XFCN (sggbak, SGGBAK, (F77_CONST_CHAR_ARG2 (&job, 1),
+			     F77_CONST_CHAR_ARG2 ("R", 1),
+			     n, ilo, ihi, plscale, prscale,
+			     n, p_balancing_mat2, n, info
+			     F77_CHAR_ARG_LEN (1)
+			     F77_CHAR_ARG_LEN (1)));
+
+  return info;
+}
+
+/*
+;;; Local Variables: ***
+;;; mode: C++ ***
+;;; End: ***
+*/