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Diffstat (limited to 'gcc/ada/libgnat/s-vector.ads')
| -rw-r--r-- | gcc/ada/libgnat/s-vector.ads | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/gcc/ada/libgnat/s-vector.ads b/gcc/ada/libgnat/s-vector.ads new file mode 100644 index 0000000..94e1040 --- /dev/null +++ b/gcc/ada/libgnat/s-vector.ads @@ -0,0 +1,49 @@ +------------------------------------------------------------------------------ +-- -- +-- GNAT RUN-TIME LIBRARY (GNARL) COMPONENTS -- +-- -- +-- S Y S T E M . V E C T O R S -- +-- -- +-- S p e c -- +-- -- +-- Copyright (C) 2002-2017, 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 3, 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. -- +-- -- +-- As a special exception under Section 7 of GPL version 3, you are granted -- +-- additional permissions described in the GCC Runtime Library Exception, -- +-- version 3.1, as published by the Free Software Foundation. -- +-- -- +-- You should have received a copy of the GNU General Public License and -- +-- a copy of the GCC Runtime Library Exception along with this program; -- +-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see -- +-- <http://www.gnu.org/licenses/>. -- +-- -- +-- GNAT was originally developed by the GNAT team at New York University. -- +-- Extensive contributions were provided by Ada Core Technologies Inc. -- +-- -- +------------------------------------------------------------------------------ + +-- This package defines a datatype which is most efficient for performing +-- logical operations on large arrays. See System.Generic_Vector_Operations. + +-- In the future this package may also define operations such as element-wise +-- addition, subtraction, multiplication, minimum and maximum of vector-sized +-- packed arrays of Unsigned_8, Unsigned_16 and Unsigned_32 values. These +-- operations could be implemented as system intrinsics on platforms with +-- direct processor support for them. + +package System.Vectors is + pragma Pure; + + type Vector is mod 2**System.Word_Size; + for Vector'Alignment use Integer'Min + (Standard'Maximum_Alignment, System.Word_Size / System.Storage_Unit); + for Vector'Size use System.Word_Size; + +end System.Vectors; |