Jip J. Dekker
2572df0663
git-subtree-dir: software/gecode_base git-subtree-split: bbefcea214fec798a0f5acc442581984555acd21
413 lines
14 KiB
C++
413 lines
14 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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* Copyright:
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* Christian Schulte, 2002
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* Guido Tack, 2004
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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_ARITHMETIC_HH
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#define GECODE_FLOAT_ARITHMETIC_HH
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#include <gecode/int.hh>
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#include <gecode/float.hh>
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#include <gecode/float/rel.hh>
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/**
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* \namespace Gecode::Float::Arithmetic
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* \brief %Arithmetic propagators
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*/
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namespace Gecode { namespace Float { namespace Arithmetic {
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/**
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* \brief Bounds consistent positive square propagator
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*
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* This propagator provides multiplication for positive views only.
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*/
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template<class VA, class VB>
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class SqrPlus : public MixBinaryPropagator<VA,PC_FLOAT_BND,VB,PC_FLOAT_BND> {
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protected:
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using MixBinaryPropagator<VA,PC_FLOAT_BND,VB,PC_FLOAT_BND>::x0;
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using MixBinaryPropagator<VA,PC_FLOAT_BND,VB,PC_FLOAT_BND>::x1;
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/// Constructor for posting
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SqrPlus(Home home, VA x0, VB x1);
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/// Constructor for cloning \a p
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SqrPlus(Space& home, SqrPlus<VA,VB>& p);
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public:
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/// Post propagator \f$x_0\cdot x_0=x_1\f$
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static ExecStatus post(Home home, VA x0, VB 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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};
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/**
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* \brief %Propagator for bounds consistent square operator
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*
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* Requires \code #include <gecode/float/arithmetic.hh> \endcode
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* \ingroup FuncFloatProp
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*/
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template<class View>
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class Sqr : 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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Sqr(Space& home, Sqr& p);
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/// Constructor for creation
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Sqr(Home home, View x0, View x1);
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public:
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/// Create copy 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$x_0^2 = x_1\f$
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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 %Propagator for bounds consistent square root operator
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*
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* The types \a A and \a B give the types of the views.
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*
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* Requires \code #include <gecode/float/arithmetic.hh> \endcode
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* \ingroup FuncFloatProp
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*/
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template<class A, class B>
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class Sqrt : public MixBinaryPropagator<A,PC_FLOAT_BND,B,PC_FLOAT_BND> {
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protected:
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using MixBinaryPropagator<A,PC_FLOAT_BND,B,PC_FLOAT_BND>::x0;
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using MixBinaryPropagator<A,PC_FLOAT_BND,B,PC_FLOAT_BND>::x1;
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/// Constructor for cloning \a p
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Sqrt(Space& home, Sqrt& p);
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/// Constructor for creation
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Sqrt(Home home, A x0, B x1);
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public:
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/// Create copy 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$x_0^2 = x_1\f$
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static ExecStatus post(Home home, A x0, B x1);
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};
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/**
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* \brief %Propagator for bounds consistent absolute operator
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*
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* The types \a A and \a B give the types of the views.
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*
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* Requires \code #include <gecode/float/arithmetic.hh> \endcode
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* \ingroup FuncFloatProp
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*/
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template<class A, class B>
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class Abs : public MixBinaryPropagator<A,PC_FLOAT_BND,B,PC_FLOAT_BND> {
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protected:
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using MixBinaryPropagator<A,PC_FLOAT_BND,B,PC_FLOAT_BND>::x0;
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using MixBinaryPropagator<A,PC_FLOAT_BND,B,PC_FLOAT_BND>::x1;
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/// Constructor for cloning \a p
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Abs(Space& home, Abs& p);
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/// Constructor for creation
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Abs(Home home, A x0, B x1);
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public:
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/// Constructor for rewriting \a p during cloning
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Abs(Space& home, Propagator& p, A x0, B x1);
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/// Create copy 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| = x_1\f$
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static ExecStatus post(Home home, A x0, B x1);
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};
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/**
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* \brief %Propagator for bounds consistent pow operator
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*
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* The types \a A and \a B give the types of the views.
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*
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* Requires \code #include <gecode/float/arithmetic.hh> \endcode
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* \ingroup FuncFloatProp
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*/
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template<class A, class B>
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class Pow : public MixBinaryPropagator<A,PC_FLOAT_BND,B,PC_FLOAT_BND> {
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protected:
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using MixBinaryPropagator<A,PC_FLOAT_BND,B,PC_FLOAT_BND>::x0;
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using MixBinaryPropagator<A,PC_FLOAT_BND,B,PC_FLOAT_BND>::x1;
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int m_n;
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/// Constructor for cloning \a p
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Pow(Space& home, Pow& p);
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/// Constructor for creation
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Pow(Home home, A x0, B x1, int n);
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public:
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/// Create copy 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$x_0^n = x_1\f$
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static ExecStatus post(Home home, A x0, B x1, int n);
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};
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/**
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* \brief %Propagator for bounds consistent nth root operator
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*
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* The types \a A and \a B give the types of the views.
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*
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* Requires \code #include <gecode/float/arithmetic.hh> \endcode
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* \ingroup FuncFloatProp
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*/
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template<class A, class B>
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class NthRoot : public MixBinaryPropagator<A,PC_FLOAT_BND,B,PC_FLOAT_BND> {
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protected:
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using MixBinaryPropagator<A,PC_FLOAT_BND,B,PC_FLOAT_BND>::x0;
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using MixBinaryPropagator<A,PC_FLOAT_BND,B,PC_FLOAT_BND>::x1;
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int m_n;
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/// Constructor for cloning \a p
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NthRoot(Space& home, NthRoot& p);
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/// Constructor for creation
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NthRoot(Home home, A x0, B x1, int n);
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public:
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/// Create copy 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$x_0^(1/n) = x_1\f$
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static ExecStatus post(Home home, A x0, B x1, int n);
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};
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/**
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* \brief Bounds or domain consistent propagator for \f$x_0\times x_1=x_0\f$
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*
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* Requires \code #include <gecode/float/arithmetic.hh> \endcode
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* \ingroup FuncFloatProp
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*/
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template<class View>
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class MultZeroOne : 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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MultZeroOne(Space& home, MultZeroOne<View>& p);
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/// Constructor for posting
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MultZeroOne(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$x_0\cdot x_1=x_0\f$
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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 Bounds consistent positive multiplication propagator
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*
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* This propagator provides multiplication for positive views only.
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*/
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template<class VA, class VB, class VC>
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class MultPlus :
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public MixTernaryPropagator<VA,PC_FLOAT_BND,VB,PC_FLOAT_BND,VC,PC_FLOAT_BND> {
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protected:
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using MixTernaryPropagator<VA,PC_FLOAT_BND,VB,PC_FLOAT_BND,VC,PC_FLOAT_BND>::x0;
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using MixTernaryPropagator<VA,PC_FLOAT_BND,VB,PC_FLOAT_BND,VC,PC_FLOAT_BND>::x1;
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using MixTernaryPropagator<VA,PC_FLOAT_BND,VB,PC_FLOAT_BND,VC,PC_FLOAT_BND>::x2;
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public:
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/// Constructor for posting
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MultPlus(Home home, VA x0, VB x1, VC x2);
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/// Constructor for cloning \a p
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MultPlus(Space& home, MultPlus<VA,VB,VC>& p);
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/// Post propagator \f$x_0\cdot x_1=x_2\f$
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static ExecStatus post(Home home, VA x0, VB x1, VC x2);
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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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};
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/**
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* \brief Bounds consistent multiplication propagator
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*
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* Requires \code #include <gecode/float/arithmetic.hh> \endcode
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*
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* \ingroup FuncFloatProp
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*/
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template<class View>
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class Mult : public TernaryPropagator<View,PC_FLOAT_BND> {
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protected:
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using TernaryPropagator<View,PC_FLOAT_BND>::x0;
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using TernaryPropagator<View,PC_FLOAT_BND>::x1;
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using TernaryPropagator<View,PC_FLOAT_BND>::x2;
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/// Constructor for cloning \a p
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Mult(Space& home, Mult<View>& p);
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public:
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/// Constructor for posting
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Mult(Home home, View x0, View x1, View x2);
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/// Post propagator \f$x_0\cdot x_1=x_2\f$
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static ExecStatus post(Home home, View x0, View x1, View x2);
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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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};
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/**
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* \brief %Propagator for bounds division operator
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*
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* The types \a A, \a B and \a C give the types of the views.
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*
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* Requires \code #include <gecode/float/arithmetic.hh> \endcode
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* \ingroup FuncFloatProp
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*/
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template<class A, class B, class C>
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class Div : public MixTernaryPropagator<A,PC_FLOAT_BND,B,PC_FLOAT_BND,C,PC_FLOAT_BND> {
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protected:
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using MixTernaryPropagator<A,PC_FLOAT_BND,B,PC_FLOAT_BND,C,PC_FLOAT_BND>::x0;
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using MixTernaryPropagator<A,PC_FLOAT_BND,B,PC_FLOAT_BND,C,PC_FLOAT_BND>::x1;
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using MixTernaryPropagator<A,PC_FLOAT_BND,B,PC_FLOAT_BND,C,PC_FLOAT_BND>::x2;
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/// Constructor for cloning \a p
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Div(Space& home, Div& p);
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/// Constructor for creation
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Div(Home home, A x0, B x1, C x2);
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public:
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/// Create copy 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 / x_1 = x_2\f$
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static ExecStatus post(Home home, A x0, B x1, C x2);
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};
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/**
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* \brief %Propagator for bounds consistent min operator
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*
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* The types \a A, \a B and \a C give the types of the views.
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*
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* Requires \code #include <gecode/float/arithmetic.hh> \endcode
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* \ingroup FuncFloatProp
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*/
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template<class A, class B, class C>
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class Min : public MixTernaryPropagator<A,PC_FLOAT_BND,B,PC_FLOAT_BND,C,PC_FLOAT_BND> {
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protected:
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using MixTernaryPropagator<A,PC_FLOAT_BND,B,PC_FLOAT_BND,C,PC_FLOAT_BND>::x0;
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using MixTernaryPropagator<A,PC_FLOAT_BND,B,PC_FLOAT_BND,C,PC_FLOAT_BND>::x1;
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using MixTernaryPropagator<A,PC_FLOAT_BND,B,PC_FLOAT_BND,C,PC_FLOAT_BND>::x2;
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/// Constructor for cloning \a p
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Min(Space& home, Min& p);
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/// Constructor for creation
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Min(Home home, A x0, B x1, C x2);
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public:
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/// Constructor for rewriting \a p during cloning
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Min(Space& home, Propagator& p, A x0, B x1, C x2);
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/// Create copy 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$ min(x_0, x_1) = x_2\f$
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static ExecStatus post(Home home, A x0, B x1, C x2);
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};
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/**
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* \brief %Propagator for bounds consistent max operator
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*
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* The types \a A, \a B and \a C give the types of the views.
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*
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* Requires \code #include <gecode/float/arithmetic.hh> \endcode
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* \ingroup FuncFloatProp
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*/
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template<class A, class B, class C>
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class Max : public MixTernaryPropagator<A,PC_FLOAT_BND,B,PC_FLOAT_BND,C,PC_FLOAT_BND> {
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protected:
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using MixTernaryPropagator<A,PC_FLOAT_BND,B,PC_FLOAT_BND,C,PC_FLOAT_BND>::x0;
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using MixTernaryPropagator<A,PC_FLOAT_BND,B,PC_FLOAT_BND,C,PC_FLOAT_BND>::x1;
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using MixTernaryPropagator<A,PC_FLOAT_BND,B,PC_FLOAT_BND,C,PC_FLOAT_BND>::x2;
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/// Constructor for cloning \a p
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Max(Space& home, Max& p);
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/// Constructor for creation
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Max(Home home, A x0, B x1, C x2);
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public:
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/// Constructor for rewriting \a p during cloning
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Max(Space& home, Propagator& p, A x0, B x1, C x2);
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/// Create copy 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$ max(x_0, x_1) = x_2\f$
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static ExecStatus post(Home home, A x0, B x1, C x2);
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};
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/**
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* \brief Bounds consistent n-ary maximum propagator
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*
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* Requires \code #include <gecode/float/arithmetic.hh> \endcode
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* \ingroup FuncFloatProp
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*/
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template<class View>
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class NaryMax : public NaryOnePropagator<View,PC_FLOAT_BND> {
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protected:
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using NaryOnePropagator<View,PC_FLOAT_BND>::x;
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using NaryOnePropagator<View,PC_FLOAT_BND>::y;
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/// Constructor for cloning \a p
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NaryMax(Space& home, NaryMax& p);
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/// Constructor for posting
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NaryMax(Home home, ViewArray<View>& x, View y);
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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$ \max x=y\f$
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static ExecStatus post(Home home, ViewArray<View>& x, View y);
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};
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}}}
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#include <gecode/float/arithmetic/sqr-sqrt.hpp>
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#include <gecode/float/arithmetic/abs.hpp>
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#include <gecode/float/arithmetic/pow-nroot.hpp>
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#include <gecode/float/arithmetic/mult.hpp>
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#include <gecode/float/arithmetic/div.hpp>
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#include <gecode/float/arithmetic/min-max.hpp>
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#endif
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// STATISTICS: float-prop
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