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------------------------------------------------------------------------------

--                                                                          --

--                         GNAT COMPILER COMPONENTS                         --

--                                                                          --

--                           I N T E R F A C E S                            --

--                                                                          --

--                                 S p e c                                  --

--                                                                          --

--          Copyright (C) 2002-2009, Free Software Foundation, Inc.         --

--                                                                          --

-- This specification is derived from the Ada Reference Manual for use with --

-- GNAT. The copyright notice above, and the license provisions that follow --

-- apply solely to the implementation dependent sections of this file.      --

--                                                                          --

-- 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 3,  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.                                     --

--                                                                          --

-- As a special exception under Section 7 of GPL version 3, you are granted --

-- additional permissions described in the GCC Runtime Library Exception,   --

-- version 3.1, as published by the Free Software Foundation.               --

--                                                                          --

-- You should have received a copy of the GNU General Public License and    --

-- a copy of the GCC Runtime Library Exception along with this program;     --

-- see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see    --

-- <http://www.gnu.org/licenses/>.                                          --

--                                                                          --

-- GNAT was originally developed  by the GNAT team at  New York University. --

-- Extensive contributions were provided by Ada Core Technologies Inc.      --

--                                                                          --

------------------------------------------------------------------------------

package Interfaces is

   pragma Pure;

   type Integer_8  is range -2 **  7 .. 2 **  7 - 1;

   for Integer_8'Size use  8;

   type Integer_16 is range -2 ** 15 .. 2 ** 15 - 1;

   for Integer_16'Size use 16;

   type Integer_32 is range -2 ** 31 .. 2 ** 31 - 1;

   for Integer_32'Size use 32;

   type Integer_64 is range -2 ** 63 .. 2 ** 63 - 1;

   for Integer_64'Size use 64;

   type Unsigned_8  is mod 2 **  8;

   for Unsigned_8'Size use  8;

   type Unsigned_16 is mod 2 ** 16;

   for Unsigned_16'Size use 16;

   type Unsigned_32 is mod 2 ** 32;

   for Unsigned_32'Size use 32;

   type Unsigned_64 is mod 2 ** 64;

   for Unsigned_64'Size use 64;

   function Shift_Left

     (Value  : Unsigned_8;

      Amount : Natural) return Unsigned_8;

   function Shift_Right

     (Value  : Unsigned_8;

      Amount : Natural) return Unsigned_8;

   function Shift_Right_Arithmetic

     (Value  : Unsigned_8;

      Amount : Natural) return Unsigned_8;

   function Rotate_Left

     (Value  : Unsigned_8;

      Amount : Natural) return Unsigned_8;

   function Rotate_Right

     (Value  : Unsigned_8;

      Amount : Natural) return Unsigned_8;

   function Shift_Left

     (Value  : Unsigned_16;

      Amount : Natural) return Unsigned_16;

   function Shift_Right

     (Value  : Unsigned_16;

      Amount : Natural) return Unsigned_16;

   function Shift_Right_Arithmetic

     (Value  : Unsigned_16;

      Amount : Natural) return Unsigned_16;

   function Rotate_Left

     (Value  : Unsigned_16;

      Amount : Natural) return Unsigned_16;

   function Rotate_Right

     (Value  : Unsigned_16;

      Amount : Natural) return Unsigned_16;

   function Shift_Left

     (Value  : Unsigned_32;

      Amount : Natural) return Unsigned_32;

   function Shift_Right

     (Value  : Unsigned_32;

      Amount : Natural) return Unsigned_32;

   function Shift_Right_Arithmetic

     (Value  : Unsigned_32;

      Amount : Natural) return Unsigned_32;

   function Rotate_Left

     (Value  : Unsigned_32;

      Amount : Natural) return Unsigned_32;

   function Rotate_Right

     (Value  : Unsigned_32;

      Amount : Natural) return Unsigned_32;

   function Shift_Left

     (Value  : Unsigned_64;

      Amount : Natural) return Unsigned_64;

   function Shift_Right

     (Value  : Unsigned_64;

      Amount : Natural) return Unsigned_64;

   function Shift_Right_Arithmetic

     (Value  : Unsigned_64;

      Amount : Natural) return Unsigned_64;

   function Rotate_Left

     (Value  : Unsigned_64;

      Amount : Natural) return Unsigned_64;

   function Rotate_Right

     (Value  : Unsigned_64;

      Amount : Natural) return Unsigned_64;

   pragma Import (Intrinsic, Shift_Left);

   pragma Import (Intrinsic, Shift_Right);

   pragma Import (Intrinsic, Shift_Right_Arithmetic);

   pragma Import (Intrinsic, Rotate_Left);

   pragma Import (Intrinsic, Rotate_Right);

   --  IEEE Floating point types. Note that the form of these definitions

   --  ensures that the work on VMS, even if the standard library is compiled

   --  using a Float_Representation pragma for Vax_Float.

   pragma Warnings (Off);

   --  Turn off warnings for targets not providing IEEE floating-point types

   type IEEE_Float_32 is digits 6;

   pragma Float_Representation (IEEE_Float, IEEE_Float_32);

   type IEEE_Float_64 is digits 15;

   pragma Float_Representation (IEEE_Float, IEEE_Float_64);

   --  If there is an IEEE extended float available on the machine, we assume

   --  that it is available as Long_Long_Float.

   --  Note: it is harmless, and explicitly permitted, to include additional

   --  types in interfaces, so it is not wrong to have IEEE_Extended_Float

   --  defined even if the extended format is not available.

   type IEEE_Extended_Float is new Long_Long_Float;

end Interfaces;