new file mode 100644
--- /dev/null
+++ b/liboctave/data-conv.h
@@ -0,0 +1,84 @@
+// data-conv.h                                            -*- C++ -*-
+/*
+
+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_data_conv_h)
+#define octave_data_conv_h 1
+
+#include <climits>
+
+#include "float-fmt.h"
+
+// Not all of the following are currently used.
+
+#if CHAR_BIT != 8
+#error "CHAR_BIT is not 8!"
+#endif
+
+#if SIZEOF_SHORT == 2
+#define TWO_BYTE_INT short
+#elif SIZEOF_INT == 2
+#define TWO_BYTE_INT int
+#else
+#error "No 2 byte integer type found!"
+#endif
+
+#if SIZEOF_INT == 4
+#define FOUR_BYTE_INT int
+#elif SIZEOF_LONG == 4
+#define FOUR_BYTE_INT long
+#else
+#error "No 4 byte integer type found!"
+#endif
+
+enum save_type
+  {
+    LS_U_CHAR,
+    LS_U_SHORT,
+    LS_U_INT,
+    LS_CHAR,
+    LS_SHORT,
+    LS_INT,
+    LS_FLOAT,
+    LS_DOUBLE,
+  };
+
+extern void
+do_double_format_conversion (double *data, int len, floating_point_format fmt);
+
+extern void
+do_float_format_conversion (float *data, int len, floating_point_format fmt);
+
+extern void
+read_doubles (istream& is, double *data, save_type type, int len,
+	      int swap, floating_point_format fmt);
+extern void
+write_doubles (ostream& os, const double *data, save_type type, int len);
+
+#endif
+
+/*
+;;; Local Variables: ***
+;;; mode: C++ ***
+;;; page-delimiter: "^/\\*" ***
+;;; End: ***
+*/