78 lines
3.8 KiB
Ada
78 lines
3.8 KiB
Ada
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------------------------------------------------------------------------------
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-- --
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-- GNAT RUN-TIME COMPONENTS --
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-- --
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-- S Y S T E M . P A C K _ 1 2 --
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-- --
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-- S p e c --
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-- --
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-- Copyright (C) 1992-2014, Free Software Foundation, Inc. --
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-- --
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-- GNAT is free software; you can redistribute it and/or modify it under --
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-- terms of the GNU General Public License as published by the Free Soft- --
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-- ware Foundation; either version 3, or (at your option) any later ver- --
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-- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
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-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
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-- or FITNESS FOR A PARTICULAR PURPOSE. --
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-- --
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-- As a special exception under Section 7 of GPL version 3, you are granted --
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-- additional permissions described in the GCC Runtime Library Exception, --
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-- version 3.1, as published by the Free Software Foundation. --
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-- --
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-- You should have received a copy of the GNU General Public License and --
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-- a copy of the GCC Runtime Library Exception along with this program; --
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-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
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-- <http://www.gnu.org/licenses/>. --
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-- --
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-- GNAT was originally developed by the GNAT team at New York University. --
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-- Extensive contributions were provided by Ada Core Technologies Inc. --
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-- --
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------------------------------------------------------------------------------
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-- Handling of packed arrays with Component_Size = 12
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package System.Pack_12 is
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pragma Preelaborate;
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Bits : constant := 12;
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type Bits_12 is mod 2 ** Bits;
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for Bits_12'Size use Bits;
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-- In all subprograms below, Rev_SSO is set True if the array has the
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-- non-default scalar storage order.
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function Get_12
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(Arr : System.Address;
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N : Natural;
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Rev_SSO : Boolean) return Bits_12 with Inline;
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-- Arr is the address of the packed array, N is the zero-based
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-- subscript. This element is extracted and returned.
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procedure Set_12
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(Arr : System.Address;
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N : Natural;
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E : Bits_12;
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Rev_SSO : Boolean) with Inline;
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-- Arr is the address of the packed array, N is the zero-based
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-- subscript. This element is set to the given value.
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function GetU_12
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(Arr : System.Address;
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N : Natural;
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Rev_SSO : Boolean) return Bits_12 with Inline;
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-- Arr is the address of the packed array, N is the zero-based
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-- subscript. This element is extracted and returned. This version
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-- is used when Arr may represent an unaligned address.
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procedure SetU_12
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(Arr : System.Address;
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N : Natural;
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E : Bits_12;
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Rev_SSO : Boolean) with Inline;
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-- Arr is the address of the packed array, N is the zero-based
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-- subscript. This element is set to the given value. This version
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-- is used when Arr may represent an unaligned address
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end System.Pack_12;
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