1 ------------------------------------------------------------------------------
3 -- GNAT RUN-TIME COMPONENTS --
5 -- S Y S T E M . P A C K _ 1 9 --
9 -- Copyright (C) 1992-2024, Free Software Foundation, Inc. --
11 -- GNAT is free software; you can redistribute it and/or modify it under --
12 -- terms of the GNU General Public License as published by the Free Soft- --
13 -- ware Foundation; either version 3, or (at your option) any later ver- --
14 -- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
15 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
16 -- or FITNESS FOR A PARTICULAR PURPOSE. --
18 -- As a special exception under Section 7 of GPL version 3, you are granted --
19 -- additional permissions described in the GCC Runtime Library Exception, --
20 -- version 3.1, as published by the Free Software Foundation. --
22 -- You should have received a copy of the GNU General Public License and --
23 -- a copy of the GCC Runtime Library Exception along with this program; --
24 -- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
25 -- <http://www.gnu.org/licenses/>. --
27 -- GNAT was originally developed by the GNAT team at New York University. --
28 -- Extensive contributions were provided by Ada Core Technologies Inc. --
30 ------------------------------------------------------------------------------
32 -- Handling of packed arrays with Component_Size = 19
34 package System
.Pack_19
is
37 Bits
: constant := 19;
39 type Bits_19
is mod 2 ** Bits
;
40 for Bits_19
'Size use Bits
;
42 -- In all subprograms below, Rev_SSO is set True if the array has the
43 -- non-default scalar storage order.
46 (Arr
: System
.Address
;
48 Rev_SSO
: Boolean) return Bits_19
with Inline
;
49 -- Arr is the address of the packed array, N is the zero-based
50 -- subscript. This element is extracted and returned.
53 (Arr
: System
.Address
;
56 Rev_SSO
: Boolean) with Inline
;
57 -- Arr is the address of the packed array, N is the zero-based
58 -- subscript. This element is set to the given value.