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sym-bit-matrix.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, 2011
8 *
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33
34#include <algorithm>
35
36namespace 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
int n
Number of negative literals for node type.
bool get(int x, int y) const
Is bit at position x, y set?
int pos(int x, int y) const
Return position in matrix.
void set(int x, int y)
Set bit at position x, y.
SymBitMatrix(Region &r, int n)
Initialize matrix for dimension n by n.
Handle to region.
Definition region.hpp:55
bool get(unsigned int i) const
Access value at bit i.
void set(unsigned int i)
Set bit i.
Gecode toplevel namespace
Post propagator for SetVar SetOpType SetVar SetRelType r
Definition set.hh:767
Post propagator for SetVar SetOpType SetVar y
Definition set.hh:767
Post propagator for SetVar x
Definition set.hh:767
#define forceinline
Definition config.hpp:187