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1996-09-28
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3KB
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69 lines
------------------------------------------------------------------------------
-- --
-- GNAT COMPILER COMPONENTS --
-- --
-- S Y S T E M . S T O R A G E _ E L E M E N T S --
-- --
-- B o d y --
-- --
-- $Revision: 1.5 $ --
-- --
-- Copyright (c) 1992,1993,1994 NYU, All Rights Reserved --
-- --
-- The GNAT library is free software; you can redistribute it and/or modify --
-- it under terms of the GNU Library General Public License as published by --
-- the Free Software Foundation; either version 2, or (at your option) any --
-- later version. The GNAT library is distributed in the hope that it will --
-- be useful, but WITHOUT ANY WARRANTY; without even the implied warranty --
-- of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU --
-- Library General Public License for more details. You should have --
-- received a copy of the GNU Library General Public License along with --
-- the GNAT library; see the file COPYING.LIB. If not, write to the Free --
-- Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. --
-- --
------------------------------------------------------------------------------
package body System.Storage_Elements is
-- Address arithmetic
function "+" (Left : Address; Right : Storage_Offset) return Address is
begin
return Left + Address (Right);
end "+";
function "+" (Left : Storage_Offset; Right : Address) return Address is
begin
return Address (Left) + Right;
end "+";
function "-" (Left : Address; Right : Storage_Offset) return Address is
begin
return Left - Address (Right);
end "-";
function "-" (Left, Right : Address) return Storage_Offset is
begin
return Storage_Offset (Left) - Storage_Offset (Right);
end "-";
function "mod" (Left : Address; Right : Storage_Offset)
return Storage_Offset is
begin
return Storage_Offset (Left) mod Right;
end "mod";
-- Conversion to/from integers
function To_Address (Value : Integer_Address) return Address is
begin
return Address (Value);
end To_Address;
function To_Integer (Value : Address) return Integer_Address is
begin
return Integer_Address (Value);
end To_Integer;
end System.Storage_Elements;