sym-bit-matrix.hpp
Go to the documentation of this file.00001 /* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */ 00002 /* 00003 * Main authors: 00004 * Christian Schulte <schulte@gecode.org> 00005 * 00006 * Copyright: 00007 * Christian Schulte, 2011 00008 * 00009 * Last modified: 00010 * $Date: 2011-08-18 09:41:50 +0200 (Thu, 18 Aug 2011) $ by $Author: tack $ 00011 * $Revision: 12311 $ 00012 * 00013 * This file is part of Gecode, the generic constraint 00014 * development environment: 00015 * http://www.gecode.org 00016 * 00017 * Permission is hereby granted, free of charge, to any person obtaining 00018 * a copy of this software and associated documentation files (the 00019 * "Software"), to deal in the Software without restriction, including 00020 * without limitation the rights to use, copy, modify, merge, publish, 00021 * distribute, sublicense, and/or sell copies of the Software, and to 00022 * permit persons to whom the Software is furnished to do so, subject to 00023 * the following conditions: 00024 * 00025 * The above copyright notice and this permission notice shall be 00026 * included in all copies or substantial portions of the Software. 00027 * 00028 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 00029 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 00030 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 00031 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE 00032 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION 00033 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION 00034 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 00035 * 00036 */ 00037 00038 #include <algorithm> 00039 00040 namespace Gecode { namespace Int { namespace NValues { 00041 00042 forceinline int 00043 SymBitMatrix::pos(int x, int y) const { 00044 assert(x < y); 00045 return (x*(2*n-x-1)) / 2 + y - x - 1; 00046 } 00047 00048 forceinline 00049 SymBitMatrix::SymBitMatrix(Region& r, int n0) 00050 : Support::BitSet<Region>(r,static_cast<unsigned int>((n0*n0-n0)/2)), 00051 n(n0) {} 00052 00053 forceinline bool 00054 SymBitMatrix::get(int x, int y) const { 00055 assert(x != y); 00056 if (x > y) std::swap(x,y); 00057 return Support::BitSet<Region>::get(static_cast<unsigned int>(pos(x,y))); 00058 } 00059 00060 forceinline void 00061 SymBitMatrix::set(int x, int y) { 00062 assert(x != y); 00063 if (x > y) std::swap(x,y); 00064 Support::BitSet<Region>::set(static_cast<unsigned int>(pos(x,y))); 00065 } 00066 00067 }}} 00068 00069 // STATISTICS: int-prop