-- --
-- S p e c --
-- --
--- $Revision: 1.18 $ --
+-- Copyright (C) 2002-2005, Free Software Foundation, Inc. --
-- --
--- This specification is adapted from the Ada Reference Manual for use with --
--- GNAT. In accordance with the copyright of that document, you can freely --
--- copy and modify this specification, provided that if you redistribute a --
--- modified version, any changes that you have made are clearly indicated. --
+-- 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. --
-- --
------------------------------------------------------------------------------
--- Assumes integer sizes of 8, 16, 32 and 64 are available, and that the
--- floating-point formats are IEEE compatible.
-
--- There is a specialized version of this package for OpenVMS.
-
package Interfaces is
-pragma Pure (Interfaces);
+ pragma Pure;
type Integer_8 is range -2 ** 7 .. 2 ** 7 - 1;
for Integer_8'Size use 8;
function Shift_Left
(Value : Unsigned_8;
- Amount : Natural)
- return Unsigned_8;
+ Amount : Natural) return Unsigned_8;
function Shift_Right
(Value : Unsigned_8;
- Amount : Natural)
- return Unsigned_8;
+ Amount : Natural) return Unsigned_8;
function Shift_Right_Arithmetic
(Value : Unsigned_8;
- Amount : Natural)
- return Unsigned_8;
+ Amount : Natural) return Unsigned_8;
function Rotate_Left
(Value : Unsigned_8;
- Amount : Natural)
- return Unsigned_8;
+ Amount : Natural) return Unsigned_8;
function Rotate_Right
(Value : Unsigned_8;
- Amount : Natural)
- return Unsigned_8;
+ Amount : Natural) return Unsigned_8;
function Shift_Left
(Value : Unsigned_16;
- Amount : Natural)
- return Unsigned_16;
+ Amount : Natural) return Unsigned_16;
function Shift_Right
(Value : Unsigned_16;
- Amount : Natural)
- return Unsigned_16;
+ Amount : Natural) return Unsigned_16;
function Shift_Right_Arithmetic
(Value : Unsigned_16;
- Amount : Natural)
- return Unsigned_16;
+ Amount : Natural) return Unsigned_16;
function Rotate_Left
(Value : Unsigned_16;
- Amount : Natural)
- return Unsigned_16;
+ Amount : Natural) return Unsigned_16;
function Rotate_Right
(Value : Unsigned_16;
- Amount : Natural)
- return Unsigned_16;
+ Amount : Natural) return Unsigned_16;
function Shift_Left
(Value : Unsigned_32;
- Amount : Natural)
- return Unsigned_32;
+ Amount : Natural) return Unsigned_32;
function Shift_Right
(Value : Unsigned_32;
- Amount : Natural)
- return Unsigned_32;
+ Amount : Natural) return Unsigned_32;
function Shift_Right_Arithmetic
(Value : Unsigned_32;
- Amount : Natural)
- return Unsigned_32;
+ Amount : Natural) return Unsigned_32;
function Rotate_Left
(Value : Unsigned_32;
- Amount : Natural)
- return Unsigned_32;
+ Amount : Natural) return Unsigned_32;
function Rotate_Right
(Value : Unsigned_32;
- Amount : Natural)
- return Unsigned_32;
+ Amount : Natural) return Unsigned_32;
function Shift_Left
(Value : Unsigned_64;
- Amount : Natural)
- return Unsigned_64;
+ Amount : Natural) return Unsigned_64;
function Shift_Right
(Value : Unsigned_64;
- Amount : Natural)
- return Unsigned_64;
+ Amount : Natural) return Unsigned_64;
function Shift_Right_Arithmetic
(Value : Unsigned_64;
- Amount : Natural)
- return Unsigned_64;
+ Amount : Natural) return Unsigned_64;
function Rotate_Left
(Value : Unsigned_64;
- Amount : Natural)
- return Unsigned_64;
+ Amount : Natural) return Unsigned_64;
function Rotate_Right
(Value : Unsigned_64;
- Amount : Natural)
- return Unsigned_64;
+ Amount : Natural) return Unsigned_64;
pragma Import (Intrinsic, Shift_Left);
pragma Import (Intrinsic, Shift_Right);
pragma Import (Intrinsic, Rotate_Left);
pragma Import (Intrinsic, Rotate_Right);
- -- Floating point types. We assume that we are on an IEEE machine, and
- -- that the types Short_Float and Long_Float in Standard refer to the
- -- 32-bit short and 64-bit long IEEE forms. Furthermore, if there is
- -- an extended float, we assume that it is available as Long_Long_Float.
+ -- 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_Float_32 is new Short_Float;
- type IEEE_Float_64 is new Long_Float;
type IEEE_Extended_Float is new Long_Long_Float;
end Interfaces;
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