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ranges-add.hpp
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7 * Christian Schulte, 2005
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33
34namespace Gecode { namespace Iter { namespace Ranges {
35
41 template<class I>
42 class AddRange : public MinMax {
43 protected:
45 I i;
47 int r_min;
49 int r_max;
50 public:
52
53
54 AddRange(void);
56 AddRange(I& i, int min, int max);
58 void init(I& i, int min, int max);
60
62
63
64 void operator ++(void);
66 };
67
68
74 template<class I>
75 class SubRange : public AddRange<I> {
76 public:
78
79
80 SubRange(void);
82 SubRange(I& i, int min, int max);
84 void init(I& i, int min, int max);
86 };
87
88 template<class I>
91
92 template<class I>
93 forceinline void
95 if (i()) {
96 mi = r_min + i.min();
97 ma = r_max + i.max();
98 ++i;
99 while (i() && (ma+1 >= r_min+i.min())) {
100 ma = r_max + i.max(); ++i;
101 }
102 } else {
103 finish();
104 }
105 }
106
107 template<class I>
109 AddRange<I>::AddRange(I& i0, int r_min0, int r_max0)
110 : i(i0), r_min(r_min0), r_max(r_max0) {
111 operator ++();
112 }
113
114 template<class I>
115 forceinline void
116 AddRange<I>::init(I& i0, int r_min0, int r_max0) {
117 i = i0; r_min = r_min0; r_max = r_max0;
118 operator ++();
119 }
120
121
122 template<class I>
125
126 template<class I>
128 SubRange<I>::SubRange(I& i, int r_min, int r_max)
129 : AddRange<I>(i,-r_max,-r_min) {}
130
131 template<class I>
132 forceinline void
133 SubRange<I>::init(I& i, int r_min, int r_max) {
134 AddRange<I>::init(i,-r_max,-r_min);
135 }
136
137}}}
138
139// STATISTICS: iter-any
140
Range iterator for adding a single range to a range iterator.
Definition: ranges-add.hpp:42
I i
Iterator to which the range is to be added.
Definition: ranges-add.hpp:45
int r_max
Maximum of range to be added.
Definition: ranges-add.hpp:49
AddRange(void)
Default constructor.
Definition: ranges-add.hpp:90
int r_min
Minimum of range to be added.
Definition: ranges-add.hpp:47
void operator++(void)
Move iterator to next range (if possible)
Definition: ranges-add.hpp:94
void init(I &i, int min, int max)
Initialize with ranges i and range min to max.
Definition: ranges-add.hpp:116
Base for range iterators with explicit min and max.
int min(void) const
Return smallest value of range.
int max(void) const
Return largest value of range.
Range iterator for subtracting a single range from a range iterator.
Definition: ranges-add.hpp:75
SubRange(void)
Default constructor.
Definition: ranges-add.hpp:124
void init(I &i, int min, int max)
Initialize with ranges i and range min to max.
Definition: ranges-add.hpp:133
Gecode toplevel namespace
#define forceinline
Definition: config.hpp:194