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var-imp.hpp
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1 /* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
2 /*
3  * Main authors:
4  * Filip Konvicka <filip.konvicka@logis.cz>
5  * Lubomir Moric <lubomir.moric@logis.cz>
6  * Vincent Barichard <Vincent.Barichard@univ-angers.fr>
7  *
8  * Contributing authors:
9  * Christian Schulte <schulte@gecode.org>
10  *
11  * Copyright:
12  * LOGIS, s.r.o., 2008
13  * Christian Schulte, 2010
14  * Vincent Barichard, 2012
15  *
16  * Last modified:
17  * $Date: 2013-02-04 17:54:05 +0100 (Mon, 04 Feb 2013) $ by $Author: schulte $
18  * $Revision: 13260 $
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44 
45 #include <cmath>
46 
47 namespace Gecode { namespace Float {
48 
49  class FloatVarImp;
50 
52  class FloatDelta : public Delta {
53  friend class FloatVarImp;
54  private:
55  FloatNum _min;
56  FloatNum _max;
57  public:
59  FloatDelta(void);
62  private:
64  FloatNum min(void) const;
66  FloatNum max(void) const;
67  };
68 
69 }}
70 
72 
73 namespace Gecode { namespace Float {
74 
80  class FloatVarImp : public FloatVarImpBase {
81  protected:
85  FloatVarImp(Space& home, bool share, FloatVarImp& x);
86  public:
88  FloatVarImp(Space& home, const FloatVal& d);
89 
91 
92  FloatVal domain(void) const;
95  FloatNum min(void) const;
97  FloatNum max(void) const;
99  FloatVal val(void) const;
101  FloatNum med(void) const;
102 
104  FloatNum size(void) const;
106 
108 
109  bool assigned(void) const;
111 
113  bool zero_in(void) const;
115  bool in(FloatNum n) const;
117  bool in(const FloatVal& n) const;
119 
121 
122  ModEvent eq(Space& home, FloatNum n);
125  ModEvent eq(Space& home, const FloatVal& n);
127  ModEvent lq(Space& home, FloatNum n);
129  ModEvent lq(Space& home, const FloatVal& n);
131  ModEvent gq(Space& home, FloatNum n);
133  ModEvent gq(Space& home, const FloatVal& n);
135 
137 
138 
146  void subscribe(Space& home, Propagator& p, PropCond pc, bool schedule=true);
148  void cancel(Space& home, Propagator& p, PropCond pc);
150  void subscribe(Space& home, Advisor& a);
152  void cancel(Space& home, Advisor& a);
154 
156 
157  static ModEventDelta med(ModEvent me);
160 
161 
162  private:
164  GECODE_FLOAT_EXPORT FloatVarImp* perform_copy(Space& home, bool share);
165  public:
167 
168  FloatVarImp* copy(Space& home, bool share);
171 
173 
174  static FloatNum min(const Delta& d);
177  static FloatNum max(const Delta& d);
179  };
180 
181 }}
182 
184 
185 // STATISTICS: float-var
186 
#define GECODE_FLOAT_EXPORT
Definition: float.hh:70
friend class FloatVarImp
Definition: var-imp.hpp:53
const FloatNum max
Largest allowed float value.
Definition: float.hh:831
FloatVal dom
Domain information.
Definition: var-imp.hpp:83
void cancel(Space &home, Propagator &p, IntSet &y)
Definition: rel.hpp:84
int ModEvent
Type for modification events.
Definition: core.hpp:146
Base-class for propagators.
Definition: core.hpp:755
Base-class for advisors.
Definition: core.hpp:926
Computation spaces.
Definition: core.hpp:1362
Min _min("Int::Min")
Gecode::IntSet d(v, 7)
int p
Number of positive literals for node type.
Definition: bool-expr.cpp:236
const FloatNum min
Smallest allowed float value.
Definition: float.hh:833
int n
Number of negative literals for node type.
Definition: bool-expr.cpp:238
Max _max("Int::Max")
Float variable implementation.
Definition: var-imp.hpp:80
FloatDelta(void)
Create float delta as providing no information.
Definition: delta.hpp:48
int PropCond
Type for propagation conditions.
Definition: core.hpp:156
void subscribe(Space &home, Propagator &p, IntSet &y)
Definition: rel.hpp:74
Float delta information for advisors.
Definition: var-imp.hpp:52
unsigned int size(I &i)
Size of all ranges of range iterator i.
struct Gecode::@519::NNF::@60::@62 a
For atomic nodes.
Float value type.
Definition: float.hh:321
Node * x
Pointer to corresponding Boolean expression node.
Definition: bool-expr.cpp:253
Generic domain change information to be supplied to advisors.
Definition: core.hpp:275
bool assigned(View x, int v)
Whether x is assigned to value v.
Definition: single.hpp:47
Gecode toplevel namespace
Base-class for Float-variable implementations.
Definition: var-imp.hpp:152
int ModEventDelta
Modification event deltas.
Definition: core.hpp:173
double FloatNum
Floating point number base type.
Definition: float.hh:108