new file mode 100644
--- /dev/null
+++ b/src/OPERATORS/op-int-concat.cc
@@ -0,0 +1,242 @@
+/*
+
+Copyright (C) 2004 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.
+
+*/
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include "gripes.h"
+#include "oct-obj.h"
+#include "ov.h"
+#include "ov-int8.h"
+#include "ov-int16.h"
+#include "ov-int32.h"
+#include "ov-int64.h"
+#include "ov-uint8.h"
+#include "ov-uint16.h"
+#include "ov-uint32.h"
+#include "ov-uint64.h"
+#include "ov-range.h"
+#include "ov-bool.h"
+#include "ov-bool-mat.h"
+#include "ov-scalar.h"
+#include "ov-re-mat.h"
+#include "ov-str-mat.h"
+#include "ov-typeinfo.h"
+#include "op-int.h"
+#include "ops.h"
+
+// Concatentation of mixed integer types:
+
+OCTAVE_CONCAT_FN2 (int8, int16)
+OCTAVE_CONCAT_FN2 (int8, int32)
+OCTAVE_CONCAT_FN2 (int8, int64)
+
+OCTAVE_CONCAT_FN2 (int8, uint8)
+OCTAVE_CONCAT_FN2 (int8, uint16)
+OCTAVE_CONCAT_FN2 (int8, uint32)
+OCTAVE_CONCAT_FN2 (int8, uint64)
+
+OCTAVE_CONCAT_FN2 (int16, int8)
+OCTAVE_CONCAT_FN2 (int16, int32)
+OCTAVE_CONCAT_FN2 (int16, int64)
+
+OCTAVE_CONCAT_FN2 (int16, uint8)
+OCTAVE_CONCAT_FN2 (int16, uint16)
+OCTAVE_CONCAT_FN2 (int16, uint32)
+OCTAVE_CONCAT_FN2 (int16, uint64)
+
+OCTAVE_CONCAT_FN2 (int32, int8)
+OCTAVE_CONCAT_FN2 (int32, int16)
+OCTAVE_CONCAT_FN2 (int32, int64)
+
+OCTAVE_CONCAT_FN2 (int32, uint8)
+OCTAVE_CONCAT_FN2 (int32, uint16)
+OCTAVE_CONCAT_FN2 (int32, uint32)
+OCTAVE_CONCAT_FN2 (int32, uint64)
+
+OCTAVE_CONCAT_FN2 (int64, int8)
+OCTAVE_CONCAT_FN2 (int64, int16)
+OCTAVE_CONCAT_FN2 (int64, int32)
+
+OCTAVE_CONCAT_FN2 (int64, uint8)
+OCTAVE_CONCAT_FN2 (int64, uint16)
+OCTAVE_CONCAT_FN2 (int64, uint32)
+OCTAVE_CONCAT_FN2 (int64, uint64)
+
+OCTAVE_CONCAT_FN2 (uint8, int8)
+OCTAVE_CONCAT_FN2 (uint8, int16)
+OCTAVE_CONCAT_FN2 (uint8, int32)
+OCTAVE_CONCAT_FN2 (uint8, int64)
+
+OCTAVE_CONCAT_FN2 (uint8, uint16)
+OCTAVE_CONCAT_FN2 (uint8, uint32)
+OCTAVE_CONCAT_FN2 (uint8, uint64)
+
+OCTAVE_CONCAT_FN2 (uint16, int8)
+OCTAVE_CONCAT_FN2 (uint16, int16)
+OCTAVE_CONCAT_FN2 (uint16, int32)
+OCTAVE_CONCAT_FN2 (uint16, int64)
+
+OCTAVE_CONCAT_FN2 (uint16, uint8)
+OCTAVE_CONCAT_FN2 (uint16, uint32)
+OCTAVE_CONCAT_FN2 (uint16, uint64)
+
+OCTAVE_CONCAT_FN2 (uint32, int8)
+OCTAVE_CONCAT_FN2 (uint32, int16)
+OCTAVE_CONCAT_FN2 (uint32, int32)
+OCTAVE_CONCAT_FN2 (uint32, int64)
+
+OCTAVE_CONCAT_FN2 (uint32, uint8)
+OCTAVE_CONCAT_FN2 (uint32, uint16)
+OCTAVE_CONCAT_FN2 (uint32, uint64)
+
+OCTAVE_CONCAT_FN2 (uint64, int8)
+OCTAVE_CONCAT_FN2 (uint64, int16)
+OCTAVE_CONCAT_FN2 (uint64, int32)
+OCTAVE_CONCAT_FN2 (uint64, int64)
+
+OCTAVE_CONCAT_FN2 (uint64, uint8)
+OCTAVE_CONCAT_FN2 (uint64, uint16)
+OCTAVE_CONCAT_FN2 (uint64, uint32)
+
+OCTAVE_INT_DOUBLE_CONCAT_FN (int8)
+OCTAVE_INT_DOUBLE_CONCAT_FN (int16)
+OCTAVE_INT_DOUBLE_CONCAT_FN (int32)
+OCTAVE_INT_DOUBLE_CONCAT_FN (int64)
+
+OCTAVE_INT_DOUBLE_CONCAT_FN (uint8)
+OCTAVE_INT_DOUBLE_CONCAT_FN (uint16)
+OCTAVE_INT_DOUBLE_CONCAT_FN (uint32)
+OCTAVE_INT_DOUBLE_CONCAT_FN (uint64)
+
+OCTAVE_DOUBLE_INT_CONCAT_FN (int8)
+OCTAVE_DOUBLE_INT_CONCAT_FN (int16)
+OCTAVE_DOUBLE_INT_CONCAT_FN (int32)
+OCTAVE_DOUBLE_INT_CONCAT_FN (int64)
+	      	   
+OCTAVE_DOUBLE_INT_CONCAT_FN (uint8)
+OCTAVE_DOUBLE_INT_CONCAT_FN (uint16)
+OCTAVE_DOUBLE_INT_CONCAT_FN (uint32)
+OCTAVE_DOUBLE_INT_CONCAT_FN (uint64)
+
+void
+install_int_concat_ops (void)
+{
+  OCTAVE_INSTALL_CONCAT_FN2 (int8, int16);
+  OCTAVE_INSTALL_CONCAT_FN2 (int8, int32);
+  OCTAVE_INSTALL_CONCAT_FN2 (int8, int64);
+
+  OCTAVE_INSTALL_CONCAT_FN2 (int8, uint8);
+  OCTAVE_INSTALL_CONCAT_FN2 (int8, uint16);
+  OCTAVE_INSTALL_CONCAT_FN2 (int8, uint32);
+  OCTAVE_INSTALL_CONCAT_FN2 (int8, uint64);
+
+  OCTAVE_INSTALL_CONCAT_FN2 (int16, int8);
+  OCTAVE_INSTALL_CONCAT_FN2 (int16, int32);
+  OCTAVE_INSTALL_CONCAT_FN2 (int16, int64);
+
+  OCTAVE_INSTALL_CONCAT_FN2 (int16, uint8);
+  OCTAVE_INSTALL_CONCAT_FN2 (int16, uint16);
+  OCTAVE_INSTALL_CONCAT_FN2 (int16, uint32);
+  OCTAVE_INSTALL_CONCAT_FN2 (int16, uint64);
+
+  OCTAVE_INSTALL_CONCAT_FN2 (int32, int8);
+  OCTAVE_INSTALL_CONCAT_FN2 (int32, int16);
+  OCTAVE_INSTALL_CONCAT_FN2 (int32, int64);
+
+  OCTAVE_INSTALL_CONCAT_FN2 (int32, uint8);
+  OCTAVE_INSTALL_CONCAT_FN2 (int32, uint16);
+  OCTAVE_INSTALL_CONCAT_FN2 (int32, uint32);
+  OCTAVE_INSTALL_CONCAT_FN2 (int32, uint64);
+
+  OCTAVE_INSTALL_CONCAT_FN2 (int64, int8);
+  OCTAVE_INSTALL_CONCAT_FN2 (int64, int16);
+  OCTAVE_INSTALL_CONCAT_FN2 (int64, int32);
+
+  OCTAVE_INSTALL_CONCAT_FN2 (int64, uint8);
+  OCTAVE_INSTALL_CONCAT_FN2 (int64, uint16);
+  OCTAVE_INSTALL_CONCAT_FN2 (int64, uint32);
+  OCTAVE_INSTALL_CONCAT_FN2 (int64, uint64);
+
+  OCTAVE_INSTALL_CONCAT_FN2 (uint8, int8);
+  OCTAVE_INSTALL_CONCAT_FN2 (uint8, int16);
+  OCTAVE_INSTALL_CONCAT_FN2 (uint8, int32);
+  OCTAVE_INSTALL_CONCAT_FN2 (uint8, int64);
+
+  OCTAVE_INSTALL_CONCAT_FN2 (uint8, uint16);
+  OCTAVE_INSTALL_CONCAT_FN2 (uint8, uint32);
+  OCTAVE_INSTALL_CONCAT_FN2 (uint8, uint64);
+
+  OCTAVE_INSTALL_CONCAT_FN2 (uint16, int8);
+  OCTAVE_INSTALL_CONCAT_FN2 (uint16, int16);
+  OCTAVE_INSTALL_CONCAT_FN2 (uint16, int32);
+  OCTAVE_INSTALL_CONCAT_FN2 (uint16, int64);
+
+  OCTAVE_INSTALL_CONCAT_FN2 (uint16, uint8);
+  OCTAVE_INSTALL_CONCAT_FN2 (uint16, uint32);
+  OCTAVE_INSTALL_CONCAT_FN2 (uint16, uint64);
+
+  OCTAVE_INSTALL_CONCAT_FN2 (uint32, int8);
+  OCTAVE_INSTALL_CONCAT_FN2 (uint32, int16);
+  OCTAVE_INSTALL_CONCAT_FN2 (uint32, int32);
+  OCTAVE_INSTALL_CONCAT_FN2 (uint32, int64);
+
+  OCTAVE_INSTALL_CONCAT_FN2 (uint32, uint8);
+  OCTAVE_INSTALL_CONCAT_FN2 (uint32, uint16);
+  OCTAVE_INSTALL_CONCAT_FN2 (uint32, uint64);
+
+  OCTAVE_INSTALL_CONCAT_FN2 (uint64, int8);
+  OCTAVE_INSTALL_CONCAT_FN2 (uint64, int16);
+  OCTAVE_INSTALL_CONCAT_FN2 (uint64, int32);
+  OCTAVE_INSTALL_CONCAT_FN2 (uint64, int64);
+
+  OCTAVE_INSTALL_CONCAT_FN2 (uint64, uint8);
+  OCTAVE_INSTALL_CONCAT_FN2 (uint64, uint16);
+  OCTAVE_INSTALL_CONCAT_FN2 (uint64, uint32);
+
+  OCTAVE_INSTALL_INT_DOUBLE_CONCAT_FN (int8);
+  OCTAVE_INSTALL_INT_DOUBLE_CONCAT_FN (int16);
+  OCTAVE_INSTALL_INT_DOUBLE_CONCAT_FN (int32);
+  OCTAVE_INSTALL_INT_DOUBLE_CONCAT_FN (int64);
+
+  OCTAVE_INSTALL_INT_DOUBLE_CONCAT_FN (uint8);
+  OCTAVE_INSTALL_INT_DOUBLE_CONCAT_FN (uint16);
+  OCTAVE_INSTALL_INT_DOUBLE_CONCAT_FN (uint32);
+  OCTAVE_INSTALL_INT_DOUBLE_CONCAT_FN (uint64);
+
+  OCTAVE_INSTALL_DOUBLE_INT_CONCAT_FN (int8);
+  OCTAVE_INSTALL_DOUBLE_INT_CONCAT_FN (int16);
+  OCTAVE_INSTALL_DOUBLE_INT_CONCAT_FN (int32);
+  OCTAVE_INSTALL_DOUBLE_INT_CONCAT_FN (int64);
+
+  OCTAVE_INSTALL_DOUBLE_INT_CONCAT_FN (uint8);
+  OCTAVE_INSTALL_DOUBLE_INT_CONCAT_FN (uint16);
+  OCTAVE_INSTALL_DOUBLE_INT_CONCAT_FN (uint32);
+  OCTAVE_INSTALL_DOUBLE_INT_CONCAT_FN (uint64);
+}
+
+/*
+;;; Local Variables: ***
+;;; mode: C++ ***
+;;; End: ***
+*/