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relax.cpp

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00001 /* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
00002 /*
00003  *  Main authors:
00004  *     Christian Schulte <schulte@gecode.org>
00005  *
00006  *  Copyright:
00007  *     Christian Schulte, 2016
00008  *
00009  *  Last modified:
00010  *     $Date: 2016-10-25 12:52:26 +0200 (Tue, 25 Oct 2016) $ by $Author: schulte $
00011  *     $Revision: 15233 $
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/float.hh>
00039 #include <gecode/search/relax.hh>
00040 
00041 namespace Gecode { namespace Float {
00042 
00044   class Relax {
00045   public:
00047     ExecStatus operator ()(Home home, FloatVar x, FloatVar sx);
00048   };
00049 
00050   forceinline ExecStatus
00051   Relax::operator ()(Home home, FloatVar x, FloatVar sx) {
00052     FloatView xv(x);
00053     return me_failed(xv.eq(home,sx.val())) ? ES_FAILED : ES_OK;
00054   }
00055 
00056 }}
00057 
00058 namespace Gecode {
00059 
00060   void
00061   relax(Home home, const FloatVarArgs& x, const FloatVarArgs& sx,
00062         Rnd r, double p) {
00063     if (x.size() != sx.size())
00064       throw Float::ArgumentSizeMismatch("Float::relax");
00065     if ((p < 0.0) || (p > 1.0))
00066       throw Float::OutOfLimits("Float::relax");
00067     Float::Relax fr;
00068     Search::relax<FloatVarArgs,Float::Relax>(home,x,sx,r,p,fr);
00069   }
00070 
00071 }
00072 
00073 // STATISTICS: float-other
00074