------------------------------------------------------------------------------
--                                                                          --
--                         GNAT LIBRARY COMPONENTS                          --
--                                                                          --
--        G N A T . L I T T L E _ E N D I A N _ I N T E R F A C E S         --
--                                                                          --
--                                 S p e c                                  --
--                                                                          --
--                            $Revision: 1.0 $                              --
--                                                                          --
--                      Copyright (C) 1999 Michael Roe                      --
--                                                                          --
-- GNAT is free software;  you can  redistribute it  and/or modify it under --
-- terms of the  GNU General Public License as published  by the Free Soft- --
-- ware  Foundation;  either version 2,  or (at your option) any later ver- --
-- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
-- OUT 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  distributed with GNAT;  see file COPYING.  If not, write --
-- to  the Free Software Foundation,  59 Temple Place - Suite 330,  Boston, --
-- MA 02111-1307, USA.                                                      --
--                                                                          --
-- As a special exception,  if other files  instantiate  generics from this --
-- unit, or you link  this unit with other files  to produce an executable, --
-- this  unit  does not  by itself cause  the resulting  executable  to  be --
-- covered  by the  GNU  General  Public  License.  This exception does not --
-- however invalidate  any other reasons why  the executable file  might be --
-- covered by the  GNU Public License.                                      --
--                                                                          --
-- GNAT is maintained by Ada Core Technologies Inc (http://www.gnat.com).   --
--                                                                          --
------------------------------------------------------------------------------

--  This package provides functions for reading file or packet formats that --
--  use a 'little endian' representation  for  integers,  that is with  the --
--  least significant octet first. These  functions  will work correctly on --
--  both big-endian and little-endian  machines; in  the former case, they  --
--  swap the order of the bytes.                                            --


with Interfaces;
use Interfaces;

package GNAT.Little_Endian_Interfaces is

   type Octets_2 is array (0 .. 1) of Interfaces.Unsigned_8;

   type Octets_4 is array (0 .. 3) of Interfaces.Unsigned_8;

   type Octets_8 is array (0 .. 7) of Interfaces.Unsigned_8;

   function To_Unsigned_16 (X : Octets_2) return Interfaces.Unsigned_16;
   pragma Inline (To_Unsigned_16);

   function To_Unsigned_32 (X : Octets_4) return Interfaces.Unsigned_32;
   pragma Inline (To_Unsigned_32);

   function To_Unsigned_64 (X : Octets_8) return Interfaces.Unsigned_64;
   pragma Inline (To_Unsigned_64);

   function To_Octets_2 (X : Unsigned_16) return Octets_2;
   pragma Inline (To_Octets_2);

   function To_Octets_4 (X : Unsigned_32) return Octets_4;
   pragma Inline (To_Octets_4);

   function To_Octets_8 (X : Unsigned_64) return Octets_8;
   pragma Inline (To_Octets_8);

end GNAT.Little_Endian_Interfaces;