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distinct.cc

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00001 /* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
00002 /*
00003  *  Main authors:
00004  *     Guido Tack <tack@gecode.org>
00005  *
00006  *  Copyright:
00007  *     Guido Tack, 2004
00008  *
00009  *  Last modified:
00010  *     $Date: 2008-02-01 11:29:52 +0100 (Fri, 01 Feb 2008) $ by $Author: tack $
00011  *     $Revision: 6032 $
00012  *
00013  *  This file is part of Gecode, the generic constraint
00014  *  development environment:
00015  *     http://www.gecode.org
00016  *
00017  *  Permission is hereby granted, free of charge, to any person obtaining
00018  *  a copy of this software and associated documentation files (the
00019  *  "Software"), to deal in the Software without restriction, including
00020  *  without limitation the rights to use, copy, modify, merge, publish,
00021  *  distribute, sublicense, and/or sell copies of the Software, and to
00022  *  permit persons to whom the Software is furnished to do so, subject to
00023  *  the following conditions:
00024  *
00025  *  The above copyright notice and this permission notice shall be
00026  *  included in all copies or substantial portions of the Software.
00027  *
00028  *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
00029  *  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
00030  *  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
00031  *  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
00032  *  LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
00033  *  OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
00034  *  WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
00035  *
00036  */
00037 
00038 #include "gecode/set/distinct.hh"
00039 
00040 using namespace Gecode::Set;
00041 
00042 namespace Gecode {
00043 
00044   void
00045   atmostOne(Space* home, const SetVarArgs& xa, unsigned int c) {
00046     Set::Limits::check(c, "Set::atmostOne");
00047     if (home->failed()) return;
00048     if (xa.size() < 2)
00049       return;
00050     ViewArray<SetView> x(home,xa);
00051     GECODE_ES_FAIL(home,Distinct::AtmostOne::post(home, x, c));
00052   }
00053 
00054 }
00055 
00056 // STATISTICS: set-post