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sym-bit-matrix.hpp
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3  * Main authors:
4  * Christian Schulte <schulte@gecode.org>
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7  * Christian Schulte, 2011
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33 
34 #include <algorithm>
35 
36 namespace Gecode { namespace Int { namespace NValues {
37 
38  forceinline int
39  SymBitMatrix::pos(int x, int y) const {
40  assert(x < y);
41  return (x*(2*n-x-1)) / 2 + y - x - 1;
42  }
43 
46  : Support::BitSet<Region>(r,static_cast<unsigned int>((n0*n0-n0)/2)),
47  n(n0) {}
48 
49  forceinline bool
50  SymBitMatrix::get(int x, int y) const {
51  assert(x != y);
52  if (x > y) std::swap(x,y);
53  return Support::BitSet<Region>::get(static_cast<unsigned int>(pos(x,y)));
54  }
55 
56  forceinline void
57  SymBitMatrix::set(int x, int y) {
58  assert(x != y);
59  if (x > y) std::swap(x,y);
60  Support::BitSet<Region>::set(static_cast<unsigned int>(pos(x,y)));
61  }
62 
63 }}}
64 
65 // STATISTICS: int-prop
Post propagator for SetVar x
Definition: set.hh:767
Post propagator for SetVar SetOpType SetVar y
Definition: set.hh:767
void set(unsigned int i)
Set bit i.
bool get(int x, int y) const
Is bit at position x, y set?
Gecode toplevel namespace
Handle to region.
Definition: region.hpp:55
Post propagator for SetVar SetOpType SetVar SetRelType r
Definition: set.hh:767
IntRelType swap(IntRelType irt)
Return swapped relation type of irt.
Definition: irt.hpp:37
bool get(unsigned int i) const
Access value at bit i.
int n
Size of matrix.
Definition: nvalues.hh:74
#define forceinline
Definition: config.hpp:185
int n
Number of negative literals for node type.
Definition: bool-expr.cpp:234
int pos(int x, int y) const
Return position in matrix.
SymBitMatrix(Region &r, int n)
Initialize matrix for dimension n by n.
void set(int x, int y)
Set bit at position x, y.