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1 ------------------------------------------------------------------------------
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2 -- --
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3 -- GNAT RUN-TIME LIBRARY (GNARL) COMPONENTS --
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4 -- --
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5 -- S Y S T E M . V E C T O R S --
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6 -- --
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7 -- S p e c --
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8 -- --
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9 -- Copyright (C) 2002-2018, Free Software Foundation, Inc. --
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10 -- --
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11 -- GNAT is free software; you can redistribute it and/or modify it under --
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12 -- terms of the GNU General Public License as published by the Free Soft- --
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13 -- ware Foundation; either version 3, or (at your option) any later ver- --
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14 -- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
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15 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
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16 -- or FITNESS FOR A PARTICULAR PURPOSE. --
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17 -- --
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18 -- As a special exception under Section 7 of GPL version 3, you are granted --
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19 -- additional permissions described in the GCC Runtime Library Exception, --
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20 -- version 3.1, as published by the Free Software Foundation. --
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21 -- --
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22 -- You should have received a copy of the GNU General Public License and --
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23 -- a copy of the GCC Runtime Library Exception along with this program; --
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24 -- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
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25 -- <http://www.gnu.org/licenses/>. --
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26 -- --
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27 -- GNAT was originally developed by the GNAT team at New York University. --
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28 -- Extensive contributions were provided by Ada Core Technologies Inc. --
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29 -- --
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30 ------------------------------------------------------------------------------
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31
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32 -- This package defines a datatype which is most efficient for performing
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33 -- logical operations on large arrays. See System.Generic_Vector_Operations.
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34
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35 -- In the future this package may also define operations such as element-wise
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36 -- addition, subtraction, multiplication, minimum and maximum of vector-sized
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37 -- packed arrays of Unsigned_8, Unsigned_16 and Unsigned_32 values. These
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38 -- operations could be implemented as system intrinsics on platforms with
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39 -- direct processor support for them.
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40
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41 package System.Vectors is
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42 pragma Pure;
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43
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44 type Vector is mod 2**System.Word_Size;
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45 for Vector'Alignment use Integer'Min
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46 (Standard'Maximum_Alignment, System.Word_Size / System.Storage_Unit);
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47 for Vector'Size use System.Word_Size;
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48
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49 end System.Vectors;
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