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violations.hpp
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3  * Main authors:
4  * Christian Schulte <schulte@gecode.org>
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6  * Copyright:
7  * Christian Schulte, 2009
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10  * $Date: 2010-07-15 01:46:18 +1000 (Thu, 15 Jul 2010) $
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37 
38 #include <climits>
39 #include <cmath>
40 
41 namespace Gecode { namespace Int { namespace Sequence {
42 
45  protected:
47  mutable unsigned int fst;
48  public:
50  Violations(void);
52  void init(Space& home, unsigned int n);
54  void update(Space& home, bool shared, Violations& v);
56  bool empty(void) const;
58  void add(unsigned int i);
60  unsigned int get(void);
61  };
62 
63 
65  Violations::Violations(void) : fst(0) {}
66 
67  forceinline void
68  Violations::init(Space& home, unsigned int n) {
70  fst=size();
71  }
72 
73  forceinline bool
74  Violations::empty(void) const {
75  fst = next(fst);
76  return fst >= size();
77  }
78 
79  forceinline void
81  assert(v.empty());
82  init(home,v.size());
83  }
84 
85  forceinline void
86  Violations::add(unsigned int i) {
87  set(i); if (i < fst) fst = i;
88  }
89 
90  forceinline unsigned int
92  assert(!empty());
93  fst = next(fst);
95  clear(fst); fst++;
96  return fst-1;
97  }
98 
99 }}}
100 
101 // STATISTICS: int-prop