new file mode 100644
--- /dev/null
+++ b/src/ov-bool-mat.cc
@@ -0,0 +1,223 @@
+/*
+
+Copyright (C) 1996, 1997 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 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 Octave; see the file COPYING.  If not, write to the Free
+Software Foundation, 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+
+*/
+
+#if defined (__GNUG__)
+#pragma implementation
+#endif
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include "lo-ieee.h"
+#include "mx-base.h"
+
+#include "gripes.h"
+#include "oct-obj.h"
+#include "ops.h"
+#include "ov-bool.h"
+#include "ov-bool-mat.h"
+#include "ov-re-mat.h"
+#include "pr-output.h"
+
+octave_allocator
+octave_bool_matrix::allocator (sizeof (octave_bool_matrix));
+
+int
+octave_bool_matrix::t_id (-1);
+
+const string
+octave_bool_matrix::t_name ("bool matrix");
+
+static octave_value *
+default_numeric_conversion_function (const octave_value& a)
+{
+  CAST_CONV_ARG (const octave_bool_matrix&);
+
+  return new octave_matrix (Matrix (v.bool_matrix_value ()));
+}
+
+type_conv_fcn
+octave_bool_matrix::numeric_conversion_function (void) const
+{
+  return default_numeric_conversion_function;
+}
+
+octave_value *
+octave_bool_matrix::try_narrowing_conversion (void)
+{
+  octave_value *retval = 0;
+
+  int nr = matrix.rows ();
+  int nc = matrix.cols ();
+
+  if (nr == 1 && nc == 1)
+    retval = new octave_bool (matrix (0, 0));
+
+  return retval;
+}
+
+octave_value
+octave_bool_matrix::index (const octave_value_list& idx) const
+{
+  octave_value retval;
+
+  int len = idx.length ();
+
+  switch (len)
+    {
+    case 2:
+      {
+	idx_vector i = idx (0).index_vector ();
+	idx_vector j = idx (1).index_vector ();
+
+	retval = boolMatrix (matrix.index (i, j));
+      }
+      break;
+
+    case 1:
+      {
+	idx_vector i = idx (0).index_vector ();
+
+	retval = boolMatrix (matrix.index (i));
+      }
+      break;
+
+    default:
+      error ("invalid number of indices (%d) for matrix value", len);
+      break;
+    }
+
+  return retval;
+}
+
+extern void assign (Array2<bool>&, const Array2<bool>&);
+
+void
+octave_bool_matrix::assign (const octave_value_list& idx,
+			    const boolMatrix& rhs)
+{
+  int len = idx.length ();
+
+  switch (len)
+    {
+    case 2:
+      {
+	idx_vector i = idx (0).index_vector ();
+	idx_vector j = idx (1).index_vector ();
+
+	matrix.set_index (i);
+	matrix.set_index (j);
+
+	::assign (matrix, rhs);
+      }
+      break;
+
+    case 1:
+      {
+	idx_vector i = idx (0).index_vector ();
+
+	matrix.set_index (i);
+
+	::assign (matrix, rhs);
+      }
+      break;
+
+    default:
+      error ("invalid number of indices (%d) for indexed matrix assignment",
+	     len);
+      break;
+    }
+}
+
+bool
+octave_bool_matrix::valid_as_scalar_index (void) const
+{
+  // XXX FIXME XXX
+  return false;
+}
+
+bool
+octave_bool_matrix::is_true (void) const
+{
+  bool retval = false;
+
+  if (rows () == 0 || columns () == 0)
+    {
+      int flag = Vpropagate_empty_matrices;
+
+      if (flag < 0)
+	warning ("empty matrix used in conditional expression");
+      else if (flag == 0)
+	error ("empty matrix used in conditional expression");
+    }
+  else
+    {
+      boolMatrix m = (matrix.all ()) . all ();
+
+      retval = (m.rows () == 1 && m.columns () == 1 && m (0, 0));
+    }
+
+  return retval;
+}
+
+double
+octave_bool_matrix::double_value (bool) const
+{
+  double retval = octave_NaN;
+
+  if ((rows () == 1 && columns () == 1)
+      || (Vdo_fortran_indexing && rows () > 0 && columns () > 0))
+    retval = matrix (0, 0);
+  else
+    gripe_invalid_conversion ("bool matrix", "real scalar");
+
+  return retval;
+}
+
+Complex
+octave_bool_matrix::complex_value (bool) const
+{
+  Complex retval (octave_NaN, octave_NaN);
+
+  if ((rows () == 1 && columns () == 1)
+      || (Vdo_fortran_indexing && rows () > 0 && columns () > 0))
+    retval = matrix (0, 0);
+  else
+    gripe_invalid_conversion ("bool matrix", "complex scalar");
+
+  return retval;
+}
+
+void
+octave_bool_matrix::print (ostream& os, bool pr_as_read_syntax)
+{
+  Matrix tmp (matrix);
+
+  octave_print_internal (os, tmp, pr_as_read_syntax, struct_indent);
+}
+
+/*
+;;; Local Variables: ***
+;;; mode: C++ ***
+;;; End: ***
+*/