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channel.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  *     Vincent Barichard <Vincent.Barichard@univ-angers.fr>
00006  *
00007  *  Copyright:
00008  *     Christian Schulte, 2006
00009  *     Vincent Barichard, 2012
00010  *
00011  *  This file is part of Gecode, the generic constraint
00012  *  development environment:
00013  *     http://www.gecode.org
00014  *
00015  *  Permission is hereby granted, free of charge, to any person obtaining
00016  *  a copy of this software and associated documentation files (the
00017  *  "Software"), to deal in the Software without restriction, including
00018  *  without limitation the rights to use, copy, modify, merge, publish,
00019  *  distribute, sublicense, and/or sell copies of the Software, and to
00020  *  permit persons to whom the Software is furnished to do so, subject to
00021  *  the following conditions:
00022  *
00023  *  The above copyright notice and this permission notice shall be
00024  *  included in all copies or substantial portions of the Software.
00025  *
00026  *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
00027  *  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
00028  *  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
00029  *  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
00030  *  LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
00031  *  OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
00032  *  WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
00033  *
00034  */
00035 
00036 #include "test/float.hh"
00037 
00038 #include <gecode/minimodel.hh>
00039 
00040 namespace Test { namespace Float {
00041 
00043    namespace Channel {
00044 
00046      class Int : public Test {
00047      public:
00049        Int(Gecode::FloatNum st)
00050          : Test("Channel::Int",2,-1,2,st,CPLT_ASSIGNMENT,false) {}
00052        virtual MaybeType solution(const Assignment& x) const {
00053          Gecode::FloatNum tmp;
00054          return (((modf(x[0].min(),&tmp)==0) ||
00055                   (modf(x[0].max(),&tmp)==0))
00056                  && (x[0]==x[1])) ? MT_TRUE : MT_FALSE;
00057        }
00059        virtual void post(Gecode::Space& home, Gecode::FloatVarArray& x) {
00060          using namespace Gecode;
00061          IntVar iv(home,-1000,1000);
00062          channel(home, x[0], iv);
00063          channel(home, iv, x[1]);
00064        }
00065      };
00066 
00068      class Bool : public Test {
00069      public:
00071        Bool(Gecode::FloatNum st)
00072          : Test("Channel::Bool",2,0,1,st,CPLT_ASSIGNMENT,false) {}
00074        virtual MaybeType solution(const Assignment& x) const {
00075          Gecode::FloatNum tmp;
00076          return (((modf(x[0].min(),&tmp)==0) ||
00077                   (modf(x[0].max(),&tmp)==0))
00078                  && (x[0]==x[1])) ? MT_TRUE : MT_FALSE;
00079        }
00081        virtual void post(Gecode::Space& home, Gecode::FloatVarArray& x) {
00082          using namespace Gecode;
00083          BoolVar bv(home,0,1);
00084          channel(home, x[0], bv);
00085          channel(home, bv, x[1]);
00086        }
00087      };
00088 
00089      Gecode::FloatNum step1 = 0.7;
00090      Gecode::FloatNum step2 = 0.1;
00091 
00092      Int ci(step1);
00093      Bool cb(step2);
00095 
00096    }
00097 }}
00098 
00099 // STATISTICS: test-float
00100