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ranges-array.hpp
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3  * Main authors:
4  * Christian Schulte <schulte@gecode.org>
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7  * Christian Schulte, 2006
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33 
34 namespace Gecode { namespace Iter { namespace Ranges {
35 
46  class Array {
47  public:
49  class Range {
50  public:
51  int min;
52  int max;
53  };
54  protected:
56  Range* r;
58  unsigned int c;
60  unsigned int n;
61  public:
63 
64  Array(void);
67  Array(Range* r, unsigned int n);
69  Array(Range* r, int n);
71  void init(Range* r, unsigned int n);
73  void init(Range* r, int n);
75 
77 
78  bool operator ()(void) const;
81  void operator ++(void);
83  void reset(void);
85 
87 
88  int min(void) const;
91  int max(void) const;
93  unsigned int width(void) const;
95  };
96 
97 
99  Array::Array(void) {}
100 
102  Array::Array(Range* r0, unsigned int n0)
103  : r(r0), c(0U), n(n0) {}
104 
106  Array::Array(Range* r0, int n0)
107  : r(r0), c(0U), n(static_cast<unsigned int>(n0)) {}
108 
109  forceinline void
110  Array::init(Range* r0, unsigned int n0) {
111  r=r0; c=0U; n=n0;
112  }
113 
114  forceinline void
115  Array::init(Range* r0, int n0) {
116  r=r0; c=0U; n=static_cast<unsigned int>(n0);
117  }
118 
119  forceinline void
121  c++;
122  }
123  forceinline bool
124  Array::operator ()(void) const {
125  return c < n;
126  }
127 
128  forceinline void
129  Array::reset(void) {
130  c=0U;
131  }
132 
133  forceinline int
134  Array::min(void) const {
135  return r[c].min;
136  }
137  forceinline int
138  Array::max(void) const {
139  return r[c].max;
140  }
141  forceinline unsigned int
142  Array::width(void) const {
143  return static_cast<unsigned int>(r[c].max-r[c].min)+1;
144  }
145 
146 }}}
147 
148 // STATISTICS: iter-any
149 
void init(Range *r, unsigned int n)
Initialize with n ranges from r.
Ranges for array
void reset(void)
Reset iterator to start from beginning.
unsigned int n
Number of ranges in array.
int min
Minimum value.
void operator++(void)
Move iterator to next range (if possible)
Array(void)
Default constructor.
Gecode toplevel namespace
Range * r
Array for ranges.
unsigned int width(void) const
Return width of range (distance between minimum and maximum)
unsigned int c
Current range.
Post propagator for SetVar SetOpType SetVar SetRelType r
Definition: set.hh:767
int max(void) const
Return largest value of range.
Range iterator for array of ranges
int min(void) const
Return smallest value of range.
int max
Maximum value.
#define forceinline
Definition: config.hpp:185
bool operator()(void) const
Test whether iterator is still at a range or done.
Gecode::FloatVal c(-8, 8)
int n
Number of negative literals for node type.
Definition: bool-expr.cpp:234