Generated on Thu Jan 16 2025 00:00:00 for Gecode by doxygen 1.14.0
sym-bit-matrix.hpp
Go to the documentation of this file.
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 *
9 * This file is part of Gecode, the generic constraint
10 * development environment:
11 * http://www.gecode.org
12 *
13 * Permission is hereby granted, free of charge, to any person obtaining
14 * a copy of this software and associated documentation files (the
15 * "Software"), to deal in the Software without restriction, including
16 * without limitation the rights to use, copy, modify, merge, publish,
17 * distribute, sublicense, and/or sell copies of the Software, and to
18 * permit persons to whom the Software is furnished to do so, subject to
19 * the following conditions:
20 *
21 * The above copyright notice and this permission notice shall be
22 * included in all copies or substantial portions of the Software.
23 *
24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
25 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
26 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
27 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
28 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
29 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
30 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
31 *
32 */
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
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
BitSet(Region &a, unsigned int s, bool set=false)
bool get(unsigned int i) const
Access value at bit i.
void set(unsigned int i)
Set bit i.
Number of values propagators.
Finite domain integers.
Support algorithms and datastructures
Gecode toplevel namespace
Post propagator for SetVar SetOpType SetVar SetRelType r
Definition set.hh:773
Post propagator for SetVar SetOpType SetVar y
Definition set.hh:773
Post propagator for SetVar x
Definition set.hh:773
#define forceinline
Definition config.hpp:194