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------------------------------------------------------------------------------
-- --
-- GNAT COMPILER COMPONENTS --
-- --
-- I N T E R F A C E S --
-- --
-- S p e c --
-- --
-- Copyright (C) 2002-2003 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 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, 51 Franklin Street, Fifth Floor, --
-- Boston, MA 02110-1301, 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 was originally developed by the GNAT team at New York University. --
-- Extensive contributions were provided by Ada Core Technologies Inc. --
-- --
------------------------------------------------------------------------------
-- This is the OpenVMS version of this package which adds Float_Representation
-- pragmas to the IEEE floating point types to ensure they remain IEEE in
-- the presence of a configuration pragma Float_Representation (Vax_Float).
-- It assumes integer sizes of 8, 16, 32 and 64 are available, and that IEEE
-- floating-point formats are available.
package Interfaces is
pragma Pure (Interfaces);
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);
-- Floating point types. We use the digits value to define the IEEE
-- forms, otherwise a configuration pragma specifying VAX float can
-- default the digits to an illegal value for IEEE.
-- 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_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);
type IEEE_Extended_Float is digits 15;
pragma Float_Representation (IEEE_Float, IEEE_Extended_Float);
end Interfaces;
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