sym-bit-matrix.hpp
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/* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
/*
* Main authors:
* Christian Schulte <schulte@gecode.org>
*
* Copyright:
* Christian Schulte, 2011
*
* This file is part of Gecode, the generic constraint
* development environment:
* http://www.gecode.org
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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*/
#include <algorithm>
namespace Gecode { namespace Int { namespace NValues {
forceinline int
SymBitMatrix::pos(int x, int y) const {
assert(x < y);
return (x*(2*n-x-1)) / 2 + y - x - 1;
}
forceinline
SymBitMatrix::SymBitMatrix(Region& r, int n0)
: Support::BitSet<Region>(r,static_cast<unsigned int>((n0*n0-n0)/2)),
n(n0) {}
forceinline bool
SymBitMatrix::get(int x, int y) const {
assert(x != y);
if (x > y) std::swap(x,y);
return Support::BitSet<Region>::get(static_cast<unsigned int>(pos(x,y)));
}
forceinline void
SymBitMatrix::set(int x, int y) {
assert(x != y);
if (x > y) std::swap(x,y);
Support::BitSet<Region>::set(static_cast<unsigned int>(pos(x,y)));
}
}}}
// STATISTICS: int-prop
Gecode::Int::NValues::SymBitMatrix::get
bool get(int x, int y) const
Is bit at position x, y set?
Definition sym-bit-matrix.hpp:50
Gecode::Int::NValues::SymBitMatrix::pos
int pos(int x, int y) const
Return position in matrix.
Definition sym-bit-matrix.hpp:39
Gecode::Int::NValues::SymBitMatrix::set
void set(int x, int y)
Set bit at position x, y.
Definition sym-bit-matrix.hpp:57
Gecode::Int::NValues::SymBitMatrix::SymBitMatrix
SymBitMatrix(Region &r, int n)
Initialize matrix for dimension n by n.
Definition sym-bit-matrix.hpp:45
Gecode::Int::NValues::SymBitMatrix::n
int n
Size of matrix.
Definition nvalues.hh:74
Gecode::Region
Handle to region.
Definition region.hpp:55
Gecode::Support::BitSet< Region >::BitSet
BitSet(Region &a, unsigned int s, bool set=false)
Gecode::Support::RawBitSetBase::get
bool get(unsigned int i) const
Access value at bit i.
Definition bitset-base.hpp:399
Gecode::Support::RawBitSetBase::set
void set(unsigned int i)
Set bit i.
Definition bitset-base.hpp:403
Gecode::Int::NValues
Number of values propagators.
Gecode::Int
Finite domain integers.
Gecode::Support
Support algorithms and datastructures
Gecode
Gecode toplevel namespace
forceinline
#define forceinline
Definition config.hpp:187