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values-bitset.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
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33
34namespace Gecode { namespace Iter { namespace Values {
35
41 template<class BS>
42 class BitSet {
43 protected:
45 const BS& bs;
47 unsigned int cur;
49 unsigned int limit;
51 void move(void);
52 public:
54
55
56 BitSet(const BS& bs);
58 BitSet(const BS& bs, int n, int m);
60
62
63
64 bool operator ()(void) const;
66 void operator ++(void);
68
70
71
72 int val(void) const;
74 };
75
76
77 template<class BS>
79 BitSet<BS>::BitSet(const BS& bs0)
80 : bs(bs0), cur(bs.next(0)), limit(bs.size()) {
81 }
82
83 template<class BS>
85 BitSet<BS>::BitSet(const BS& bs0, int n, int m)
86 : bs(bs0),
87 cur(bs.next(static_cast<unsigned int>(n))),
88 limit(std::min(bs.size(),static_cast<unsigned int>(m)+1)) {
89 }
90
91 template<class BS>
92 forceinline void
94 cur=bs.next(cur+1);
95 }
96 template<class BS>
97 forceinline bool
99 return cur < limit;
100 }
101
102 template<class BS>
103 forceinline int
104 BitSet<BS>::val(void) const {
105 return static_cast<int>(cur);
106 }
107
108}}}
109
110// STATISTICS: iter-any
unsigned int limit
Limit value.
void operator++(void)
Move iterator to next value (if possible)
BitSet(const BS &bs)
Initialize with bitset bs.
bool operator()(void) const
Test whether iterator is still at a value or done.
int val(void) const
Return current value.
unsigned int cur
Current value.
void move(void)
Move to next set bit.
Value iterators.
Definition iter.hh:45
Range and value iterators.
Definition iter.hh:41
Gecode toplevel namespace
void min(Home home, FloatVar x0, FloatVar x1, FloatVar x2)
Post propagator for .
#define forceinline
Definition config.hpp:194