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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188/* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- *//* * Main authors: * Filip Konvicka <filip.konvicka@logis.cz> * Lubomir Moric <lubomir.moric@logis.cz> * Vincent Barichard <Vincent.Barichard@univ-angers.fr> * * Contributing authors: * Christian Schulte <schulte@gecode.org> * * Copyright: * LOGIS, s.r.o., 2008 * Christian Schulte, 2010 * Vincent Barichard, 2012 * * 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 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. * */
#include <cmath>
namespace Gecode { namespace Float {
class FloatVarImp;
/// Float delta information for advisors class FloatDelta : public Delta { friend class FloatVarImp; private: FloatNum _min; ///< Minimum value just pruned FloatNum _max; ///< Largest value just pruned public: /// Create float delta as providing no information FloatDelta(void); /// Create float delta with \a min and \a max FloatDelta(FloatNum min, FloatNum max); private: /// Return minimum FloatNum min(void) const; /// Return maximum FloatNum max(void) const; };
}}
#include <gecode/float/var-imp/delta.hpp>
namespace Gecode { namespace Float {
/** * \brief Float variable implementation * * \ingroup Other */ class FloatVarImp : public FloatVarImpBase { protected: /// Domain information FloatVal dom; /// Constructor for cloning \a x FloatVarImp(Space& home, FloatVarImp& x); public: /// Initialize with interval \a d FloatVarImp(Space& home, const FloatVal& d);
/// \name Value access //@{ /// Return domain FloatVal domain(void) const; /// Return minimum of domain FloatNum min(void) const; /// Return maximum of domain FloatNum max(void) const; /// Return value of domain (only if assigned) FloatVal val(void) const; /// Return median of domain (closest representation) FloatNum med(void) const;
/// Return width of domain (distance between maximum and minimum) FloatNum size(void) const; //@}
/// \name Domain tests //@{ /// Test whether variable is assigned bool assigned(void) const;
/// Test whether 0 is contained in domain bool zero_in(void) const; /// Test whether \a n is contained in domain bool in(FloatNum n) const; /// Test whether \a n is contained in domain bool in(const FloatVal& n) const; //@}
/// \name Domain update by value //@{ /// Restrict domain values to be equal to \a n ModEvent eq(Space& home, FloatNum n); /// Restrict domain values to be equal to \a n ModEvent eq(Space& home, const FloatVal& n); /// Restrict domain values to be less or equal than \a n ModEvent lq(Space& home, FloatNum n); /// Restrict domain values to be less or equal than \a n ModEvent lq(Space& home, const FloatVal& n); /// Restrict domain values to be greater or equal than \a n ModEvent gq(Space& home, FloatNum n); /// Restrict domain values to be greater or equal than \a n ModEvent gq(Space& home, const FloatVal& n); //@}
/// \name Dependencies //@{ /** * \brief Subscribe propagator \a p with propagation condition \a pc to variable * * In case \a schedule is false, the propagator is just subscribed but * not scheduled for execution (this must be used when creating * subscriptions during propagation). * */ GECODE_FLOAT_EXPORT void subscribe(Space& home, Propagator& p, PropCond pc, bool schedule=true); /// Re-schedule propagator \a p with propagation condition \a pc GECODE_FLOAT_EXPORT void reschedule(Space& home, Propagator& p, PropCond pc); /** \brief Subscribe advisor \a a to variable * * The advisor \a a is only subscribed if \a assigned is false. * * If \a fail is true, the advisor \a a is also run when a variable * operation triggers failure. This feature is undocumented. * */ GECODE_FLOAT_EXPORT void subscribe(Space& home, Advisor& a, bool fail); //@}
/// \name Variable implementation-dependent propagator support //@{ /// Translate modification event \a me to modification event delta for view static ModEventDelta med(ModEvent me); //@}
private: /// Return copy of not-yet copied variable GECODE_FLOAT_EXPORT FloatVarImp* perform_copy(Space& home); public: /// \name Cloning //@{ /// Return copy of this variable FloatVarImp* copy(Space& home); //@}
/// \name Delta information for advisors //@{ /// Return minimum value just pruned static FloatNum min(const Delta& d); /// Return maximum value just pruned static FloatNum max(const Delta& d); //@} };
}}
#include <gecode/float/var-imp/float.hpp>
// STATISTICS: float-var