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linear.hh
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1 /* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
2 /*
3  * Main authors:
4  * Christian Schulte <schulte@gecode.org>
5  * Guido Tack <tack@gecode.org>
6  * Vincent Barichard <Vincent.Barichard@univ-angers.fr>
7  *
8  * Copyright:
9  * Christian Schulte, 2002
10  * Guido Tack, 2004
11  * Vincent Barichard, 2012
12  *
13  * Last modified:
14  * $Date: 2013-01-24 19:28:06 +0100 (Thu, 24 Jan 2013) $ by $Author: schulte $
15  * $Revision: 13235 $
16  *
17  * This file is part of Gecode, the generic constraint
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41 
42 #ifndef __GECODE_FLOAT_LINEAR_HH__
43 #define __GECODE_FLOAT_LINEAR_HH__
44 
45 #include <gecode/int.hh>
46 #include <gecode/float.hh>
47 
53 namespace Gecode { namespace Float { namespace Linear {
54 
60  template<class P, class N, PropCond pc>
61  class Lin : public Propagator {
62  protected:
69 
71  Lin(Space& home, bool share, Lin<P,N,pc>& p);
74  public:
76  virtual PropCost cost(const Space& home, const ModEventDelta& med) const;
78  virtual size_t dispose(Space& home);
79  };
80 
86  template<class View>
88  FloatVal& c, FloatNum& sl, FloatNum& su);
89 
95  template<class View>
97  FloatVal& c, FloatNum& sl, FloatNum& su);
98 
107  template<class P, class N>
108  class Eq : public Lin<P,N,PC_FLOAT_BND> {
109  protected:
113 
115  Eq(Space& home, bool share, Eq& p);
116  public:
120  virtual Actor* copy(Space& home, bool share);
122  virtual ExecStatus propagate(Space& home, const ModEventDelta& med);
124  static ExecStatus
125  post(Home home, ViewArray<P>& x, ViewArray<N>& y, FloatVal c);
126  };
127 
128 
137  template<class P, class N>
138  class Lq : public Lin<P,N,PC_FLOAT_BND> {
139  protected:
143 
145  Lq(Space& home, bool share, Lq& p);
146  public:
150  virtual Actor* copy(Space& home, bool share);
152  virtual ExecStatus propagate(Space& home, const ModEventDelta& med);
154  static ExecStatus
155  post(Home home, ViewArray<P>& x, ViewArray<N>& y, FloatVal c);
156  };
157 
158 }}}
159 
161 
162 namespace Gecode { namespace Float { namespace Linear {
163 
168  class Term {
169  public:
174  };
175 
190  GECODE_FLOAT_EXPORT void
191  estimate(Term* t, int n, FloatVal c, FloatNum& l, FloatNum& u);
192 
210  post(Home home, Term* t, int n, FloatRelType frt, FloatVal c);
211 
230  post(Home home, Term* t, int n, FloatRelType frt, FloatVal c, Reify r);
231 
232 }}}
233 
234 #endif
235 
236 // STATISTICS: float-prop