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Diffstat (limited to 'gcc-4.8.3/gcc/ada/g-busorg.ads')
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diff --git a/gcc-4.8.3/gcc/ada/g-busorg.ads b/gcc-4.8.3/gcc/ada/g-busorg.ads new file mode 100644 index 000000000..5b7d10263 --- /dev/null +++ b/gcc-4.8.3/gcc/ada/g-busorg.ads @@ -0,0 +1,72 @@ +------------------------------------------------------------------------------ +-- -- +-- GNAT RUN-TIME COMPONENTS -- +-- -- +-- G N A T . B U B B L E _ S O R T _ G -- +-- -- +-- S p e c -- +-- -- +-- Copyright (C) 1995-2010, AdaCore -- +-- -- +-- 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. -- +-- -- +------------------------------------------------------------------------------ + +-- Bubblesort generic package using formal procedures + +-- This package provides a generic bubble sort routine that can be used with +-- different types of data. + +-- See also GNAT.Bubble_Sort, a version that works with subprogram access +-- parameters, allowing code sharing. The generic version is slightly more +-- efficient but does not allow code sharing and has an interface that is +-- more awkward to use. + +-- There is also GNAT.Bubble_Sort_A, which is now considered obsolete, but +-- was an older version working with subprogram parameters. This version +-- is retained for backwards compatibility with old versions of GNAT. + +generic + -- The data to be sorted is assumed to be indexed by integer values from + -- 1 to N, where N is the number of items to be sorted. In addition, the + -- index value zero is used for a temporary location used during the sort. + + with procedure Move (From : Natural; To : Natural); + -- A procedure that moves the data item with index value From to the data + -- item with index value To (the old value in To being lost). An index + -- value of zero is used for moves from and to a single temporary location + -- used by the sort. + + with function Lt (Op1, Op2 : Natural) return Boolean; + -- A function that compares two items and returns True if the item with + -- index Op1 is less than the item with Index Op2, and False if the Op2 + -- item is greater than or equal to the Op1 item. + +package GNAT.Bubble_Sort_G is + pragma Pure; + + procedure Sort (N : Natural); + -- This procedures sorts items in the range from 1 to N into ascending + -- order making calls to Lt to do required comparisons, and Move to move + -- items around. Note that, as described above, both Move and Lt use a + -- single temporary location with index value zero. This sort is stable, + -- that is the order of equal elements in the input is preserved. + +end GNAT.Bubble_Sort_G; |