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------------------------------------------------------------------------------
-- --
-- GNAT COMPILER COMPONENTS --
-- --
-- I N T E R F A C E S --
-- --
-- S p e c --
-- --
-- Copyright (C) 2002-2016, 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. --
-- --
------------------------------------------------------------------------------
pragma Compiler_Unit_Warning;
package Interfaces is
pragma No_Elaboration_Code_All;
pragma Pure;
-- All identifiers in this unit are implementation defined
pragma Implementation_Defined;
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 new Long_Long_Integer;
for Integer_64'Size use 64;
-- Note: we use Long_Long_Integer'First instead of -2 ** 63 to allow this
-- unit to compile when using custom target configuration files where the
-- maximum integer is 32 bits. This is useful for static analysis tools
-- such as SPARK or CodePeer. In the normal case Long_Long_Integer is
-- always 64-bits so we get the desired 64-bit type.
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_24 is mod 2 ** 24;
for Unsigned_24'Size use 24;
-- Declare this type for compatibility with legacy Ada compilers.
-- This is particularly useful in the context of CodePeer analysis.
type Unsigned_32 is mod 2 ** 32;
for Unsigned_32'Size use 32;
type Unsigned_64 is mod 2 ** Long_Long_Integer'Size;
for Unsigned_64'Size use 64;
-- See comment on Integer_64 above
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
type IEEE_Float_32 is digits 6;
for IEEE_Float_32'Size use 32;
type IEEE_Float_64 is digits 15;
for IEEE_Float_64'Size use 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;
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