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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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10  * $Date: 2011-08-18 17:41:50 +1000 (Thu, 18 Aug 2011) $ by $Author: tack $
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37 
38 #include <algorithm>
39 
40 namespace Gecode { namespace Int { namespace NValues {
41 
42  forceinline int
43  SymBitMatrix::pos(int x, int y) const {
44  assert(x < y);
45  return (x*(2*n-x-1)) / 2 + y - x - 1;
46  }
47 
50  : Support::BitSet<Region>(r,static_cast<unsigned int>((n0*n0-n0)/2)),
51  n(n0) {}
52 
53  forceinline bool
54  SymBitMatrix::get(int x, int y) const {
55  assert(x != y);
56  if (x > y) std::swap(x,y);
57  return Support::BitSet<Region>::get(static_cast<unsigned int>(pos(x,y)));
58  }
59 
60  forceinline void
61  SymBitMatrix::set(int x, int y) {
62  assert(x != y);
63  if (x > y) std::swap(x,y);
64  Support::BitSet<Region>::set(static_cast<unsigned int>(pos(x,y)));
65  }
66 
67 }}}
68 
69 // STATISTICS: int-prop