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ranges-offset.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, 2004
8 *
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33
34namespace Gecode { namespace Iter { namespace Ranges {
35
41 template<class I>
42 class Offset {
43 protected:
45 I i;
47 int c;
48 public:
50
51
52 Offset(void);
54 Offset(I& i, int c);
56 void init(I& i, int c);
58
60
61
62 bool operator ()(void) const;
64 void operator ++(void);
66
68
69
70 int min(void) const;
72 int max(void) const;
74 unsigned int width(void) const;
76 };
77
78
79 template<class I>
82
83 template<class I>
84 inline void
85 Offset<I>::init(I& i0, int c0) {
86 i = i0; c = c0;
87 }
88
89 template<class I>
90 inline
91 Offset<I>::Offset(I& i0, int c0) : i(i0), c(c0) {}
92
93 template<class I>
94 forceinline void
96 ++i;
97 }
98 template<class I>
99 forceinline bool
101 return i();
102 }
103
104 template<class I>
105 forceinline int
106 Offset<I>::min(void) const {
107 return i.min()+c;
108 }
109 template<class I>
110 forceinline int
111 Offset<I>::max(void) const {
112 return i.max()+c;
113 }
114 template<class I>
115 forceinline unsigned int
116 Offset<I>::width(void) const {
117 return i.width();
118 }
119
120}}}
121
122// STATISTICS: iter-any
123
Range iterator for pointwise offset (by some constant)
int max(void) const
Return largest value of range.
bool operator()(void) const
Test whether iterator is still at a range or done.
int c
Offset for ranges.
unsigned int width(void) const
Return width of range (distance between minimum and maximum)
int min(void) const
Return smallest value of range.
void init(I &i, int c)
Initialize with ranges from i and offset c.
Offset(void)
Default constructor.
Offset(I &i, int c)
Initialize with ranges from i and offset c.
void operator++(void)
Move iterator to next range (if possible)
Gecode toplevel namespace
#define forceinline
Definition config.hpp:187