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values-negative.hpp
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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 *
6 * Copyright:
7 * Christian Schulte, 2008
8 *
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33
34namespace Gecode { namespace Iter { namespace Values {
35
42 template<class I, bool strict=false>
43 class Negative {
44 protected:
46 I i;
47 public:
49
50
51 Negative(void);
53 Negative(I& i);
55 void init(I& i);
57
59
60
61 bool operator ()(void) const;
63 void operator ++(void);
65
67
68
69 int val(void) const;
71 };
72
73
74 template<class I, bool strict>
77
78 template<class I, bool strict>
79 forceinline void
81 i=i0;
82 }
83
84 template<class I, bool strict>
87
88 template<class I, bool strict>
89 forceinline void
91 ++i;
92 }
93 template<class I, bool strict>
94 forceinline bool
96 if (strict) {
97 return i() && (i.val() < 0);
98 } else {
99 return i() && (i.val() <= 0);
100 }
101 }
102
103 template<class I, bool strict>
104 forceinline int
106 return i.val();
107 }
108
109}}}
110
111// STATISTICS: iter-any
112
Value iterator for selecting only negative values.
bool operator()(void) const
Test whether iterator is still at a value or done.
void operator++(void)
Move iterator to next value (if possible)
int val(void) const
Return current value.
void init(I &i)
Initialize with values from i.
Negative(void)
Default constructor.
Gecode toplevel namespace
#define forceinline
Definition config.hpp:187