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values-positive.hpp
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3  * Main authors:
4  * Christian Schulte <schulte@gecode.org>
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6  * Copyright:
7  * Christian Schulte, 2008
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10  * $Date: 2010-07-28 17:35:33 +0200 (Wed, 28 Jul 2010) $ by $Author: schulte $
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37 
38 namespace Gecode { namespace Iter { namespace Values {
39 
46  template<class I, bool strict=false>
47  class Positive {
48  protected:
50  I i;
51  public:
53 
54  Positive(void);
57  Positive(I& i);
59  void init(I& i);
61 
63 
64  bool operator ()(void) const;
67  void operator ++(void);
69 
71 
72  int val(void) const;
75  };
76 
77 
78  template<class I, bool strict>
81 
82  template<class I, bool strict>
83  forceinline void
85  i=i0;
86  if (strict) {
87  while (i() && (i.val() <= 0)) ++i;
88  } else {
89  while (i() && (i.val() < 0)) ++i;
90  }
91  }
92 
93  template<class I, bool strict>
96  if (strict) {
97  while (i() && (i.val() <= 0)) ++i;
98  } else {
99  while (i() && (i.val() < 0)) ++i;
100  }
101  }
102 
103  template<class I, bool strict>
104  forceinline void
106  ++i;
107  }
108  template<class I, bool strict>
109  forceinline bool
111  return i();
112  }
113 
114  template<class I, bool strict>
115  forceinline int
117  return i.val();
118  }
119 
120 }}}
121 
122 // STATISTICS: iter-any
123 
Value iterator for selecting only positive values.
void init(I &i)
Initialize with values from i.
Gecode::IntArgs i(4, 1, 2, 3, 4)
int val(void) const
Return current value.
#define forceinline
Definition: config.hpp:132
Gecode toplevel namespace
Positive(void)
Default constructor.
bool operator()(void) const
Test whether iterator is still at a value or done.
void operator++(void)
Move iterator to next value (if possible)