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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  *  This file is part of Gecode, the generic constraint
00010  *  development environment:
00011  *     http://www.gecode.org
00012  *
00013  *  Permission is hereby granted, free of charge, to any person obtaining
00014  *  a copy of this software and associated documentation files (the
00015  *  "Software"), to deal in the Software without restriction, including
00016  *  without limitation the rights to use, copy, modify, merge, publish,
00017  *  distribute, sublicense, and/or sell copies of the Software, and to
00018  *  permit persons to whom the Software is furnished to do so, subject to
00019  *  the following conditions:
00020  *
00021  *  The above copyright notice and this permission notice shall be
00022  *  included in all copies or substantial portions of the Software.
00023  *
00024  *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
00025  *  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
00026  *  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
00027  *  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
00028  *  LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
00029  *  OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
00030  *  WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
00031  *
00032  */
00033 
00034 #include <gecode/float.hh>
00035 #include <gecode/search/relax.hh>
00036 
00037 namespace Gecode { namespace Float {
00038 
00040   class Relax {
00041   public:
00043     ExecStatus operator ()(Home home, FloatVar x, FloatVar sx);
00044   };
00045 
00046   forceinline ExecStatus
00047   Relax::operator ()(Home home, FloatVar x, FloatVar sx) {
00048     FloatView xv(x);
00049     return me_failed(xv.eq(home,sx.val())) ? ES_FAILED : ES_OK;
00050   }
00051 
00052 }}
00053 
00054 namespace Gecode {
00055 
00056   void
00057   relax(Home home, const FloatVarArgs& x, const FloatVarArgs& sx,
00058         Rnd r, double p) {
00059     if (x.size() != sx.size())
00060       throw Float::ArgumentSizeMismatch("Float::relax");
00061     if ((p < 0.0) || (p > 1.0))
00062       throw Float::OutOfLimits("Float::relax");
00063     Float::Relax fr;
00064     Search::relax<FloatVarArgs,Float::Relax>(home,x,sx,r,p,fr);
00065   }
00066 
00067 }
00068 
00069 // STATISTICS: float-other
00070