--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/ov-re-mat.cc	Sat Oct 12 01:39:21 1996 +0000
@@ -0,0 +1,250 @@
+/*
+
+Copyright (C) 1996 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 "lo-utils.h"
+#include "mx-base.h"
+
+#include "gripes.h"
+#include "mappers.h"
+#include "oct-obj.h"
+#include "ov-re-mat.h"
+#include "pr-output.h"
+
+int octave_matrix::t_id = -1;
+
+const string octave_matrix::t_name ("matrix");
+
+octave_matrix::octave_matrix (const RowVector& v, int pcv)
+  : octave_base_value (),
+    matrix ((pcv < 0 && Vprefer_column_vectors) || pcv
+	    ? Matrix (v.transpose ()) : Matrix (v)) { }
+
+octave_matrix::octave_matrix (const ColumnVector& v, int pcv)
+  : octave_base_value (),
+    matrix ((pcv < 0 && Vprefer_column_vectors) || pcv
+	    ? Matrix (v) : Matrix (v.transpose ())) { }
+
+#include <iostream.h>
+
+octave_value
+octave_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 = Matrix (matrix.index (i, j));
+      }
+      break;
+
+    case 1:
+      {
+	idx_vector i = idx (0).index_vector ();
+	retval = Matrix (matrix.index (i));
+      }
+      break;
+
+    default:
+      error ("invalid number of indices (%d) for matrix value", len);
+      break;
+    }
+
+  return retval;
+}
+
+extern void assign (Array2<double>&, const Array2<double>&);
+
+void
+octave_matrix::assign (const octave_value_list& idx, const Matrix& 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_matrix::valid_as_scalar_index (void) const
+{
+  // XXX FIXME XXX
+  return false;
+}
+
+bool
+octave_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
+    {
+      Matrix m = (matrix.all ()) . all ();
+
+      retval = (m.rows () == 1 && m.columns () == 1 && m (0, 0) != 0.0);
+    }
+
+  return retval;
+}
+
+double
+octave_matrix::double_value (bool) const
+{
+  double retval = octave_NaN;
+
+  // XXX FIXME XXX -- maybe this should be a function, valid_as_scalar()
+  if ((rows () == 1 && columns () == 1)
+      || (Vdo_fortran_indexing && rows () > 0 && columns () > 0))
+    retval = matrix (0, 0);
+  else
+    gripe_invalid_conversion ("real matrix", "real scalar");
+
+  return retval;
+}
+
+Complex
+octave_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 ("real matrix", "complex scalar");
+
+  return retval;
+}
+
+octave_value
+octave_matrix::convert_to_str (void) const
+{
+  octave_value retval;
+
+  int nr = matrix.rows ();
+  int nc = matrix.columns ();
+
+  if (nr == 0 && nc == 0)
+    {
+      char s = '\0';
+      retval = octave_value (&s);
+    }
+  else
+    {
+      if (nr == 0 || nc == 0)
+	{
+	  char s = '\0';
+	  retval = octave_value (&s);
+	}
+      else
+	{
+	  charMatrix chm (nr, nc);
+
+	  for (int j = 0; j < nc; j++)
+	    {
+	      for (int i = 0; i < nr; i++)
+		{
+		  double d = matrix (i, j);
+
+		  if (xisnan (d))
+		    {
+		      ::error ("invalid conversion from NaN to character");
+		      return retval;
+		    }
+		  else
+		    {
+		      // XXX FIXME XXX -- warn about out of range
+		      // conversions?
+
+		      int ival = NINT (d);
+		      chm (i, j) = (char) ival;
+		    }
+		}
+	    }
+
+	  retval = octave_value (chm, 1);
+	}
+    }
+
+  return retval;
+}
+
+void
+octave_matrix::print (ostream& os)
+{
+  octave_print_internal (os, matrix, false, struct_indent);
+}
+
+/*
+;;; Local Variables: ***
+;;; mode: C++ ***
+;;; End: ***
+*/