Jip J. Dekker
1d9faf38de
git-subtree-dir: software/gecode git-subtree-split: 313e87646da4fc2752a70e83df16d993121a8e40
384 lines
12 KiB
C++
384 lines
12 KiB
C++
/* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
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/*
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* Main authors:
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* Christian Schulte <schulte@gecode.org>
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* Guido Tack <tack@gecode.org>
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* Vincent Barichard <Vincent.Barichard@univ-angers.fr>
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*
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* Contributing authors:
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* Gabor Szokoli <szokoli@gecode.org>
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*
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* Copyright:
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* Christian Schulte, 2002
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* Guido Tack, 2004
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* Gabor Szokoli, 2003
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* Vincent Barichard, 2012
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*
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* This file is part of Gecode, the generic constraint
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* development environment:
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* http://www.gecode.org
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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*/
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#ifndef GECODE_FLOAT_REL_HH
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#define GECODE_FLOAT_REL_HH
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#include <gecode/int.hh>
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#include <gecode/float.hh>
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/**
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* \namespace Gecode::Float::Rel
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* \brief Simple relation propagators
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*/
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namespace Gecode { namespace Float { namespace Rel {
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/*
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* Equality propagators
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*
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*/
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/**
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* \brief Binary bounds consistent equality propagator
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*
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* Requires \code #include <gecode/float/rel.hh> \endcode
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* \ingroup FuncFloatProp
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*/
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template<class View0, class View1>
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class Eq :
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public MixBinaryPropagator<View0,PC_FLOAT_BND,View1,PC_FLOAT_BND> {
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protected:
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using MixBinaryPropagator<View0,PC_FLOAT_BND,View1,PC_FLOAT_BND>::x0;
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using MixBinaryPropagator<View0,PC_FLOAT_BND,View1,PC_FLOAT_BND>::x1;
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/// Constructor for cloning \a p
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Eq(Space& home, Eq<View0,View1>& p);
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public:
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/// Constructor for posting
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Eq(Home home, View0 x0, View1 x1);
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/// Constructor for rewriting \a p during cloning
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Eq(Space& home, Propagator& p, View0 x0, View1 x1);
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/// Copy propagator during cloning
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virtual Actor* copy(Space& home);
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/// Perform propagation
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virtual ExecStatus propagate(Space& home, const ModEventDelta& med);
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/// Post bounds consistent propagator \f$ x_0 = x_1\f$
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static ExecStatus post(Home home, View0 x0, View1 x1);
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};
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/**
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* \brief n-ary bounds consistent equality propagator
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*
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* Requires \code #include <gecode/float/rel.hh> \endcode
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* \ingroup FuncFloatProp
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*/
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template<class View>
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class NaryEq : public NaryPropagator<View,PC_FLOAT_BND> {
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protected:
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using NaryPropagator<View,PC_FLOAT_BND>::x;
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/// Constructor for cloning \a p
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NaryEq(Space& home, NaryEq<View>& p);
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/// Constructor for posting
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NaryEq(Home home, ViewArray<View>&);
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public:
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/// Copy propagator during cloning
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virtual Actor* copy(Space& home);
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/**
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* \brief Cost function
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*
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* If a view has been assigned, the cost is low unary.
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* Otherwise it is low linear.
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*/
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virtual PropCost cost(const Space& home, const ModEventDelta& med) const;
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/// Perform propagation
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virtual ExecStatus propagate(Space& home, const ModEventDelta& med);
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/// Post bounds consistent propagator \f$ x_0 = x_1=\ldots =x_{|x|-1}\f$
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static ExecStatus post(Home home, ViewArray<View>& x);
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};
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/**
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* \brief Reified binary bounds consistent equality propagator
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*
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* Requires \code #include <gecode/float/rel.hh> \endcode
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* \ingroup FuncFloatProp
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*/
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template<class View, class CtrlView, ReifyMode rm>
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class ReEq : public Int::ReBinaryPropagator<View,PC_FLOAT_BND,CtrlView> {
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protected:
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using Int::ReBinaryPropagator<View,PC_FLOAT_BND,CtrlView>::x0;
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using Int::ReBinaryPropagator<View,PC_FLOAT_BND,CtrlView>::x1;
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using Int::ReBinaryPropagator<View,PC_FLOAT_BND,CtrlView>::b;
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/// Constructor for cloning \a p
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ReEq(Space& home, ReEq& p);
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/// Constructor for posting
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ReEq(Home home, View x0, View x1, CtrlView b);
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public:
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/// Copy propagator during cloning
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virtual Actor* copy(Space& home);
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/// Perform propagation
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virtual ExecStatus propagate(Space& home, const ModEventDelta& med);
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/// Post bounds consistent propagator \f$ (x_0 = x_1)\Leftrightarrow b\f$
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static ExecStatus post(Home home, View x0, View x1, CtrlView b);
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};
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/**
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* \brief Reified bounds consistent equality with float propagator
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*
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* Requires \code #include <gecode/float/rel.hh> \endcode
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* \ingroup FuncFloatProp
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*/
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template<class View, class CtrlView, ReifyMode rm>
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class ReEqFloat : public Int::ReUnaryPropagator<View,PC_FLOAT_BND,CtrlView> {
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protected:
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using Int::ReUnaryPropagator<View,PC_FLOAT_BND,CtrlView>::x0;
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using Int::ReUnaryPropagator<View,PC_FLOAT_BND,CtrlView>::b;
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/// Float constant to check
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FloatVal c;
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/// Constructor for cloning \a p
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ReEqFloat(Space& home, ReEqFloat& p);
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/// Constructor for posting
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ReEqFloat(Home home, View x, FloatVal c, CtrlView b);
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public:
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/// Copy propagator during cloning
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virtual Actor* copy(Space& home);
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/// Perform propagation
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virtual ExecStatus propagate(Space& home, const ModEventDelta& med);
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/// Post bounds consistent propagator \f$ (x = c)\Leftrightarrow b\f$
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static ExecStatus post(Home home, View x, FloatVal c, CtrlView b);
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};
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/**
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* \brief Binary bounds consistent disequality propagator
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*
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* Requires \code #include <gecode/float/rel.hh> \endcode
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* \ingroup FuncFloatProp
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*/
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template<class View0, class View1>
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class Nq :
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public MixBinaryPropagator<View0,PC_FLOAT_VAL,View1,PC_FLOAT_VAL> {
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protected:
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using MixBinaryPropagator<View0,PC_FLOAT_VAL,View1,PC_FLOAT_VAL>::x0;
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using MixBinaryPropagator<View0,PC_FLOAT_VAL,View1,PC_FLOAT_VAL>::x1;
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/// Constructor for cloning \a p
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Nq(Space& home, Nq<View0,View1>& p);
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public:
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/// Constructor for posting
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Nq(Home home, View0 x0, View1 x1);
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/// Constructor for rewriting \a p during cloning
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Nq(Space& home, Propagator& p, View0 x0, View1 x1);
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/// Copy propagator during cloning
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virtual Actor* copy(Space& home);
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/// Perform propagation
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virtual ExecStatus propagate(Space& home, const ModEventDelta& med);
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/// Post bounds consistent propagator \f$ x_0 \neq x_1\f$
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static ExecStatus post(Home home, View0 x0, View1 x1);
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};
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/**
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* \brief Binary bounds consistent disequality propagator with float value
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*
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* Requires \code #include <gecode/float/rel.hh> \endcode
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* \ingroup FuncFloatProp
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*/
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template<class View>
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class NqFloat :
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public UnaryPropagator<View,PC_FLOAT_VAL> {
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protected:
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using UnaryPropagator<View,PC_FLOAT_VAL>::x0;
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/// Float constant to check
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FloatVal c;
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/// Constructor for cloning \a p
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NqFloat(Space& home, NqFloat<View>& p);
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public:
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/// Constructor for posting
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NqFloat(Home home, View x, FloatVal c);
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/// Copy propagator during cloning
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virtual Actor* copy(Space& home);
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/// Perform propagation
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virtual ExecStatus propagate(Space& home, const ModEventDelta& med);
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/// Post bounds consistent propagator \f$ x_0 \neq c\f$
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static ExecStatus post(Home home, View x0, FloatVal c);
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};
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/*
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* Order propagators
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*
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*/
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/**
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* \brief Less or equal propagator
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*
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* Requires \code #include <gecode/float/rel.hh> \endcode
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* \ingroup FuncFloatProp
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*/
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template<class View>
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class Lq : public BinaryPropagator<View,PC_FLOAT_BND> {
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protected:
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using BinaryPropagator<View,PC_FLOAT_BND>::x0;
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using BinaryPropagator<View,PC_FLOAT_BND>::x1;
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/// Constructor for cloning \a p
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Lq(Space& home, Lq& p);
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/// Constructor for posting
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Lq(Home home, View x0, View x1);
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public:
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/// Copy propagator during cloning
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virtual Actor* copy(Space& home);
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/// Perform propagation
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virtual ExecStatus propagate(Space& home, const ModEventDelta& med);
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/// Post propagator \f$x_0 \leq x_1\f$
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static ExecStatus post(Home home, View x0, View x1);
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};
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/**
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* \brief Less propagator
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*
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* Requires \code #include <gecode/float/rel.hh> \endcode
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* \ingroup FuncFloatProp
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*/
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template<class View>
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class Le : public BinaryPropagator<View,PC_FLOAT_BND> {
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protected:
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using BinaryPropagator<View,PC_FLOAT_BND>::x0;
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using BinaryPropagator<View,PC_FLOAT_BND>::x1;
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/// Constructor for cloning \a p
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Le(Space& home, Le& p);
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/// Constructor for posting
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Le(Home home, View x0, View x1);
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public:
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/// Copy propagator during cloning
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virtual Actor* copy(Space& home);
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/// Perform propagation
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virtual ExecStatus propagate(Space& home, const ModEventDelta& med);
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/// Post propagator \f$x_0 \le x_1\f$
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static ExecStatus post(Home home, View x0, View x1);
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};
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/*
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* Reified order propagators
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*
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*/
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/**
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* \brief Reified less or equal with float propagator
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*
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* Requires \code #include <gecode/float/rel.hh> \endcode
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* \ingroup FuncFloatProp
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*/
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template<class View, class CtrlView, ReifyMode rm>
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class ReLqFloat : public Int::ReUnaryPropagator<View,PC_FLOAT_BND,CtrlView> {
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protected:
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using Int::ReUnaryPropagator<View,PC_FLOAT_BND,CtrlView>::x0;
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using Int::ReUnaryPropagator<View,PC_FLOAT_BND,CtrlView>::b;
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/// Float constant to check
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FloatVal c;
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/// Constructor for cloning \a p
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ReLqFloat(Space& home, ReLqFloat& p);
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/// Constructor for posting
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ReLqFloat(Home home, View x, FloatVal c, CtrlView b);
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public:
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/// Copy propagator during cloning
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virtual Actor* copy(Space& home);
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/// Perform propagation
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virtual ExecStatus propagate(Space& home, const ModEventDelta& med);
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/// Post propagator for \f$ (x \leq c)\Leftrightarrow b\f$
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static ExecStatus post(Home home, View x, FloatVal c, CtrlView b);
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};
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/**
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* \brief Reified less with float propagator
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*
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* Requires \code #include <gecode/float/rel.hh> \endcode
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* \ingroup FuncFloatProp
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*/
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template<class View, class CtrlView, ReifyMode rm>
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class ReLeFloat : public Int::ReUnaryPropagator<View,PC_FLOAT_BND,CtrlView> {
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protected:
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using Int::ReUnaryPropagator<View,PC_FLOAT_BND,CtrlView>::x0;
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using Int::ReUnaryPropagator<View,PC_FLOAT_BND,CtrlView>::b;
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/// Float constant to check
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FloatVal c;
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/// Constructor for cloning \a p
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ReLeFloat(Space& home, ReLeFloat& p);
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/// Constructor for posting
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ReLeFloat(Home home, View x, FloatVal c, CtrlView b);
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public:
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/// Copy propagator during cloning
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virtual Actor* copy(Space& home);
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/// Perform propagation
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virtual ExecStatus propagate(Space& home, const ModEventDelta& med);
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/// Post propagator for \f$ (x < c)\Leftrightarrow b\f$
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static ExecStatus post(Home home, View x, FloatVal c, CtrlView b);
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};
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/**
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* \brief Reified less or equal propagator
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*
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* Requires \code #include <gecode/float/rel.hh> \endcode
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* \ingroup FuncFloatProp
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*/
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template<class View, class CtrlView, ReifyMode rm>
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class ReLq : public Int::ReBinaryPropagator<View,PC_FLOAT_BND,CtrlView> {
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protected:
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using Int::ReBinaryPropagator<View,PC_FLOAT_BND,CtrlView>::x0;
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using Int::ReBinaryPropagator<View,PC_FLOAT_BND,CtrlView>::x1;
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using Int::ReBinaryPropagator<View,PC_FLOAT_BND,CtrlView>::b;
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/// Constructor for cloning \a p
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ReLq(Space& home, ReLq& p);
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/// Constructor for posting
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ReLq(Home home, View x0, View x1, CtrlView b);
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public:
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/// Copy propagator during cloning
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virtual Actor* copy(Space& home);
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/// Perform propagation
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virtual ExecStatus propagate(Space& home, const ModEventDelta& med);
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/// Post propagator for \f$ (x_0 \leq x_1)\Leftrightarrow b\f$
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static ExecStatus post(Home home, View x0, View x1, CtrlView b);
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};
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}}}
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#include <gecode/float/rel/eq.hpp>
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#include <gecode/float/rel/nq.hpp>
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#include <gecode/float/rel/lq-le.hpp>
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#endif
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// STATISTICS: float-prop
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