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dom.cpp
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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  * Vincent Barichard <Vincent.Barichard@univ-angers.fr>
6  *
7  * Copyright:
8  * Christian Schulte, 2005
9  * Vincent Barichard, 2012
10  *
11  * This file is part of Gecode, the generic constraint
12  * development environment:
13  * http://www.gecode.org
14  *
15  * Permission is hereby granted, free of charge, to any person obtaining
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20  * permit persons to whom the Software is furnished to do so, subject to
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35 
36 #include "test/float.hh"
37 
38 #include <gecode/minimodel.hh>
39 
40 namespace Test { namespace Float {
41 
43  namespace Dom {
44 
51  class Val : public Test {
52  protected:
55  public:
58  : Test("Dom::Val::"+str(n)+"::"+str(c0),
59  n,-3,3,st,CPLT_ASSIGNMENT,n==1), c(c0) {
60  testsubsumed = false;
61  }
63  virtual MaybeType solution(const Assignment& x) const {
64  for (int i=x.size(); i--; )
65  if ((x[i].max() > c.max()) || (x[i].min() < c.min()))
66  return MT_FALSE;
67  return MT_TRUE;
68  }
70  virtual void post(Gecode::Space& home, Gecode::FloatVarArray& x) {
71  if (x.size() == 1)
72  Gecode::dom(home, x[0], c);
73  else
74  Gecode::dom(home, x, c);
75  }
77  virtual void post(Gecode::Space& home, Gecode::FloatVarArray& x,
78  Gecode::Reify r) {
79  assert(x.size() == 1);
80  Gecode::dom(home, x[0], c, r);
81  }
82  };
83 
85  class Num : public Test {
86  protected:
91  public:
95  : Test("Dom::Num::"+str(n)+"::"+str(min0)+"::"+str(max0),
96  n,-3,3,st,CPLT_ASSIGNMENT,n==1), min(min0), max(max0) {
97  testsubsumed = false;
98  }
100  virtual MaybeType solution(const Assignment& x) const {
101  if (max < min)
102  return MT_FALSE;
103  for (int i=x.size(); i--; )
104  if ((x[i].max() > max) || (x[i].min() < min))
105  return MT_FALSE;
106  return MT_TRUE;
107  }
109  virtual void post(Gecode::Space& home, Gecode::FloatVarArray& x) {
110  if (x.size() == 1)
111  Gecode::dom(home, x[0], min, max);
112  else
113  Gecode::dom(home, x, min, max);
114  }
117  Gecode::Reify r) {
118  assert(x.size() == 1);
119  Gecode::dom(home, x[0], min, max, r);
120  }
121  };
122 
124  class Create {
125  public:
127  Create(void) {
128  using namespace Gecode;
129  FloatNum step = 0.7;
130  for (int c=-4; c<=4; c++) {
131  (void) new Val(1,c,step);
132  (void) new Val(2,c,step);
133  for (int d=-3; d<=3; d++) {
134  (void) new Num(1,c,d,step);
135  (void) new Num(2,c,d,step);
136  }
137  }
138  }
139  };
140 
143 
144  }
145 
146 }}
147 
148 // STATISTICS: test-float
int n
Number of negative literals for node type.
Definition: bool-expr.cpp:234
Node * x
Pointer to corresponding Boolean expression node.
Definition: bool-expr.cpp:249
Float value type.
Definition: float.hh:334
friend FloatVal max(const FloatVal &x, const FloatVal &y)
Definition: val.hpp:386
friend FloatVal min(const FloatVal &x, const FloatVal &y)
Definition: val.hpp:398
Float variable array.
Definition: float.hh:1030
Reification specification.
Definition: int.hh:876
Computation spaces.
Definition: core.hpp:1742
Base class for assignments
Definition: float.hh:80
Help class to create and register tests.
Definition: dom.cpp:124
Create(void)
Perform creation and registration.
Definition: dom.cpp:127
Test for domain constraints with float numbers
Definition: dom.cpp:85
Gecode::FloatNum max
Float number.
Definition: dom.cpp:90
Num(int n, Gecode::FloatNum min0, Gecode::FloatNum max0, Gecode::FloatNum st)
Create and register test.
Definition: dom.cpp:93
Gecode::FloatNum min
Float number.
Definition: dom.cpp:88
virtual void post(Gecode::Space &home, Gecode::FloatVarArray &x)
Post constraint on x.
Definition: dom.cpp:109
virtual void post(Gecode::Space &home, Gecode::FloatVarArray &x, Gecode::Reify r)
Post reified constraint on x for r.
Definition: dom.cpp:116
virtual MaybeType solution(const Assignment &x) const
Test whether x is solution
Definition: dom.cpp:100
Test for domain constraints with a float value
Definition: dom.cpp:51
Val(int n, Gecode::FloatVal c0, Gecode::FloatNum st)
Create and register test.
Definition: dom.cpp:57
virtual MaybeType solution(const Assignment &x) const
Test whether x is solution
Definition: dom.cpp:63
Gecode::FloatVal c
Float constant.
Definition: dom.cpp:54
virtual void post(Gecode::Space &home, Gecode::FloatVarArray &x, Gecode::Reify r)
Post reified constraint on x for r.
Definition: dom.cpp:77
virtual void post(Gecode::Space &home, Gecode::FloatVarArray &x)
Post constraint on x.
Definition: dom.cpp:70
bool testsubsumed
Whether to test for subsumption.
Definition: float.hh:263
static std::string str(Gecode::FloatRelType frt)
Map float relation to string.
Definition: float.hpp:194
double FloatNum
Floating point number base type.
Definition: float.hh:106
const FloatNum max
Largest allowed float value.
Definition: float.hh:844
const Gecode::FloatNum step
Definition: arithmetic.cpp:785
Create c
Definition: dom.cpp:141
@ CPLT_ASSIGNMENT
Definition: float.hh:62
MaybeType
Type for comparisons and solutions.
Definition: float.hh:51
@ MT_FALSE
Definition: float.hh:52
@ MT_TRUE
Definition: float.hh:53
Gecode::IntArgs i({1, 2, 3, 4})
Gecode::IntSet d(r, 4)
General test support.
Definition: afc.cpp:39
Region r
Definition: region.cpp:65