new file mode 100644
--- /dev/null
+++ b/src/ls-mat4.h
@@ -0,0 +1,52 @@
+/*
+
+Copyright (C) 2003 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_ls_mat4_h)
+#define octave_ls_mat4 1
+
+extern oct_mach_info::float_format
+mopt_digit_to_float_format (int mach);
+
+extern int
+float_format_to_mopt_digit (oct_mach_info::float_format flt_fmt);
+
+extern int
+read_mat_file_header (std::istream& is, bool& swap, FOUR_BYTE_INT& mopt, 
+		      FOUR_BYTE_INT& nr, FOUR_BYTE_INT& nc,
+		      FOUR_BYTE_INT& imag, FOUR_BYTE_INT& len,
+		      int quiet = 0);
+
+extern std::string
+read_mat_binary_data (std::istream& is, const std::string& filename,
+		      octave_value& tc);
+
+extern bool
+save_mat_binary_data (std::ostream& os, const octave_value& tc,
+		      const std::string& name) ;
+
+#endif
+
+/*
+;;; Local Variables: ***
+;;; mode: C++ ***
+;;; End: ***
+*/