1 /* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */ 2 /* 3 * Main authors: 4 * Guido Tack <tack@gecode.org> 5 * 6 * Copyright: 7 * Guido Tack, 2004 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 #ifndef GECODE_SET_ATMOSTONE_HH 35 #define GECODE_SET_ATMOSTONE_HH 36 37 #include <gecode/set.hh> 38 39 namespace Gecode { namespace Set { namespace Distinct { 40 41 /** 42 * \namespace Gecode::Set::Distinct 43 * \brief Propagators for global distinctness constraints 44 */ 45 46 /** 47 * \brief %Propagator for the AtMostOneIntersection constraint 48 * 49 * Requires \code #include <gecode/set/distinct.hh> \endcode 50 * \ingroup FuncSetProp 51 */ 52 class AtmostOne : public NaryPropagator<SetView, PC_SET_ANY> { 53 protected: 54 /// Cardinality of the sets 55 unsigned int c; 56 /// Constructor for cloning \a p 57 AtmostOne(Space& home, AtmostOne& p); 58 /// Constructor for posting 59 AtmostOne(Home home, ViewArray<SetView>&,unsigned int); 60 public: 61 /// Copy propagator during cloning 62 GECODE_SET_EXPORT virtual Actor* copy(Space& home); 63 /// Perform propagation 64 GECODE_SET_EXPORT virtual ExecStatus propagate(Space& home, const ModEventDelta& med); 65 /// Post propagator for \f$\forall 0\leq i\leq |x| : |x_i|=c\f$ and \f$\forall 0\leq i<j\leq |x| : |x_i\cap x_j|\leq 1\f$ 66 static ExecStatus post(Home home,ViewArray<SetView> x,unsigned int c); 67 }; 68 69 }}} 70 71 #include <gecode/set/distinct/atmostOne.hpp> 72 73 #endif 74 75 // STATISTICS: set-prop 76