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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  *
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40 
41 #include <cmath>
42 
43 namespace Gecode { namespace Float {
44 
45  class FloatVarImp;
46 
48  class FloatDelta : public Delta {
49  friend class FloatVarImp;
50  private:
51  FloatNum _min;
52  FloatNum _max;
53  public:
55  FloatDelta(void);
58  private:
60  FloatNum min(void) const;
62  FloatNum max(void) const;
63  };
64 
65 }}
66 
68 
69 namespace Gecode { namespace Float {
70 
76  class FloatVarImp : public FloatVarImpBase {
77  protected:
81  FloatVarImp(Space& home, FloatVarImp& x);
82  public:
84  FloatVarImp(Space& home, const FloatVal& d);
85 
87 
88  FloatVal domain(void) const;
91  FloatNum min(void) const;
93  FloatNum max(void) const;
95  FloatVal val(void) const;
97  FloatNum med(void) const;
98 
100  FloatNum size(void) const;
102 
104 
105  bool assigned(void) const;
107 
109  bool zero_in(void) const;
111  bool in(FloatNum n) const;
113  bool in(const FloatVal& n) const;
115 
117 
118  ModEvent eq(Space& home, FloatNum n);
121  ModEvent eq(Space& home, const FloatVal& n);
123  ModEvent lq(Space& home, FloatNum n);
125  ModEvent lq(Space& home, const FloatVal& n);
127  ModEvent gq(Space& home, FloatNum n);
129  ModEvent gq(Space& home, const FloatVal& n);
131 
133 
134 
142  GECODE_FLOAT_EXPORT void subscribe(Space& home, Propagator& p, PropCond pc, bool schedule=true);
153  GECODE_FLOAT_EXPORT void subscribe(Space& home, Advisor& a, bool fail);
155 
157 
158  static ModEventDelta med(ModEvent me);
161 
162 
163  private:
165  GECODE_FLOAT_EXPORT FloatVarImp* perform_copy(Space& home);
166  public:
168 
169  FloatVarImp* copy(Space& home);
172 
174 
175  static FloatNum min(const Delta& d);
178  static FloatNum max(const Delta& d);
180  };
181 
182 }}
183 
185 
186 // STATISTICS: float-var
187 
#define GECODE_FLOAT_EXPORT
Definition: float.hh:68
friend class FloatVarImp
Definition: var-imp.hpp:49
const FloatNum max
Largest allowed float value.
Definition: float.hh:844
FloatVal dom
Domain information.
Definition: var-imp.hpp:79
int ModEvent
Type for modification events.
Definition: core.hpp:62
Base-class for propagators.
Definition: core.hpp:1023
Base-class for advisors.
Definition: core.hpp:1251
Computation spaces.
Definition: core.hpp:1701
Min _min("Int::Min")
Gecode::IntSet d(v, 7)
int p
Number of positive literals for node type.
Definition: bool-expr.cpp:232
const FloatNum min
Smallest allowed float value.
Definition: float.hh:846
int n
Number of negative literals for node type.
Definition: bool-expr.cpp:234
Max _max("Int::Max")
Float variable implementation.
Definition: var-imp.hpp:76
FloatDelta(void)
Create float delta as providing no information.
Definition: delta.hpp:44
int PropCond
Type for propagation conditions.
Definition: core.hpp:72
void subscribe(Space &home, Propagator &p, IntSet &y)
Definition: rel.hpp:71
Float delta information for advisors.
Definition: var-imp.hpp:48
unsigned int size(I &i)
Size of all ranges of range iterator i.
Float value type.
Definition: float.hh:334
Generic domain change information to be supplied to advisors.
Definition: core.hpp:203
bool assigned(View x, int v)
Whether x is assigned to value v.
Definition: single.hpp:43
Post propagator for SetVar x
Definition: set.hh:767
Gecode toplevel namespace
void reschedule(Space &home, Propagator &p, IntSet &y)
Definition: rel.hpp:92
Base-class for Float-variable implementations.
Definition: var-imp.hpp:185
int ModEventDelta
Modification event deltas.
Definition: core.hpp:89
double FloatNum
Floating point number base type.
Definition: float.hh:106
struct Gecode::@593::NNF::@62::@64 a
For atomic nodes.