| ------------------------------------------------------------------------------ |
| -- -- |
| -- GNAT RUN-TIME COMPONENTS -- |
| -- -- |
| -- S Y S T E M . P A C K _ 2 4 -- |
| -- -- |
| -- S p e c -- |
| -- -- |
| -- Copyright (C) 1992-2005, Free Software Foundation, Inc. -- |
| -- -- |
| -- 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. -- |
| -- -- |
| ------------------------------------------------------------------------------ |
| |
| -- Handling of packed arrays with Component_Size = 24 |
| |
| package System.Pack_24 is |
| pragma Preelaborate; |
| |
| Bits : constant := 24; |
| |
| type Bits_24 is mod 2 ** Bits; |
| for Bits_24'Size use Bits; |
| |
| function Get_24 (Arr : System.Address; N : Natural) return Bits_24; |
| -- Arr is the address of the packed array, N is the zero-based |
| -- subscript. This element is extracted and returned. |
| |
| procedure Set_24 (Arr : System.Address; N : Natural; E : Bits_24); |
| -- Arr is the address of the packed array, N is the zero-based |
| -- subscript. This element is set to the given value. |
| |
| function GetU_24 (Arr : System.Address; N : Natural) return Bits_24; |
| -- Arr is the address of the packed array, N is the zero-based |
| -- subscript. This element is extracted and returned. This version |
| -- is used when Arr may represent an unaligned address. |
| |
| procedure SetU_24 (Arr : System.Address; N : Natural; E : Bits_24); |
| -- Arr is the address of the packed array, N is the zero-based |
| -- subscript. This element is set to the given value. This version |
| -- is used when Arr may represent an unaligned address |
| |
| end System.Pack_24; |
