new file mode 100644
--- /dev/null
+++ b/src/ov-complex.h
@@ -0,0 +1,145 @@
+/*
+
+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 (octave_complex_h)
+#define octave_complex_h 1
+
+#if defined (__GNUG__)
+#pragma interface
+#endif
+
+#include <cstdlib>
+
+#include <string>
+
+class ostream;
+
+#include "mx-base.h"
+#include "str-vec.h"
+
+#include "error.h"
+#include "ov-base.h"
+#include "ov-typeinfo.h"
+
+class Octave_map;
+class octave_value_list;
+
+class tree_walker;
+
+// Real scalar values.
+
+class
+octave_complex : public octave_base_value
+{
+public:
+
+  octave_complex (void)
+    : octave_base_value () { }
+
+  octave_complex (const Complex& c)
+    : octave_base_value (), scalar (c) { }
+
+  octave_complex (const octave_complex& c)
+    : octave_base_value (), scalar (c.scalar) { }
+
+  ~octave_complex (void) { }
+
+  octave_value *clone (void) { return new octave_complex (*this); }
+
+#if 0
+  void *operator new (size_t size);
+  void operator delete (void *p, size_t size);
+#endif
+
+  octave_value index (const octave_value_list& idx) const;
+
+  int rows (void) const { return 1; }
+  int columns (void) const { return 1; }
+
+  bool is_defined (void) const { return true; }
+
+  bool is_complex_scalar (void) const { return true; }
+
+  octave_value all (void) const { return (scalar != 0.0); }
+  octave_value any (void) const { return (scalar != 0.0); }
+
+  bool is_complex_type (void) const { return true; }
+
+  bool is_scalar_type (void) const { return true; }
+
+  bool is_numeric_type (void) const { return true; }
+
+  // XXX FIXME XXX ???
+  bool valid_as_scalar_index (void) const { return false; }
+  bool valid_as_zero_index (void) const { return false; }
+
+  bool is_true (void) const { return (scalar != 0.0); }
+
+  bool is_empty (void) const { return (rows () == 0 && columns () == 0); }
+
+  double double_value (bool = false) const;
+
+  Matrix matrix_value (bool = false) const;
+
+  Complex complex_value (bool = false) const;
+
+  ComplexMatrix complex_matrix_value (bool = false) const;
+
+  octave_value not (void) const { return octave_value (scalar == 0.0); }
+
+  octave_value uminus (void) const { return octave_value (- scalar); }
+
+  octave_value transpose (void) const { return octave_value (scalar); }
+
+  octave_value hermitian (void) const { return octave_value (conj (scalar)); }
+
+  void increment (void) { scalar += 1.0; }
+
+  void decrement (void) { scalar -= 1.0; }
+
+  void print (ostream& os);
+
+  int type_id (void) const { return t_id; }
+
+  string type_name (void) const { return t_name; }
+
+  static int static_type_id (void) { return t_id; }
+
+  static void register_type (void)
+    { t_id = octave_value_typeinfo::register_type (t_name); }
+
+private:
+
+  Complex scalar;
+
+  static int t_id;
+
+  static const string t_name;
+};
+
+#endif
+
+/*
+;;; Local Variables: ***
+;;; mode: C++ ***
+;;; End: ***
+*/