Jip J. Dekker
981be2067e
git-subtree-dir: software/gecode_on_replay git-subtree-split: 8051d92b9c89e49cccfbd1c201371580d7703ab4
561 lines
17 KiB
C++
Executable File
561 lines
17 KiB
C++
Executable File
/* -*- 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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* Vincent Barichard <Vincent.Barichard@univ-angers.fr>
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*
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* Copyright:
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* Christian Schulte, 2005
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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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#include <iostream>
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namespace Gecode { namespace Float {
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/**
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* \defgroup TaskActorFloatView Float views
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*
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* Float propagators and branchers compute with float views.
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* Float views provide views on float variable implementations.
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* \ingroup TaskActorFloat
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*/
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/**
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* \brief Float view for float variables
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* \ingroup TaskActorFloatView
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*/
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class FloatView : public VarImpView<FloatVar> {
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protected:
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using VarImpView<FloatVar>::x;
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public:
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/// \name Constructors and initialization
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//@{
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/// Default constructor
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FloatView(void);
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/// Initialize from float variable \a y
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FloatView(const FloatVar& y);
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/// Initialize from float variable \a y
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FloatView(FloatVarImp* y);
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//@}
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/// \name Value access
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//@{
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/// Return domain
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FloatVal domain(void) const;
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/// Return minimum of domain
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FloatNum min(void) const;
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/// Return maximum of domain
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FloatNum max(void) const;
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/// Return median of domain (closest representation)
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FloatNum med(void) const;
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/**
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* \brief Return assigned value
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*
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* Throws an exception of type Float::ValOfUnassignedVar if variable
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* is not yet assigned.
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*
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*/
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FloatVal val(void) const;
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/// Return size of domain (distance between maximum and minimum)
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FloatNum size(void) const;
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//@}
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/// \name Domain tests
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//@{
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/// Test whether 0 is contained in domain
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bool zero_in(void) const;
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/// Test whether \a n is contained in domain
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bool in(FloatNum n) const;
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/// Test whether \a n is contained in domain
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bool in(const FloatVal& n) const;
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//@}
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/// \name Domain update by value
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//@{
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/// Restrict domain values to be less or equal than \a n
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ModEvent lq(Space& home, int n);
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/// Restrict domain values to be less or equal than \a n
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ModEvent lq(Space& home, FloatNum n);
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/// Restrict domain values to be less or equal than \a n
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ModEvent lq(Space& home, FloatVal n);
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/// Restrict domain values to be greater or equal than \a n
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ModEvent gq(Space& home, int n);
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/// Restrict domain values to be greater or equal than \a n
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ModEvent gq(Space& home, FloatNum n);
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/// Restrict domain values to be greater or equal than \a n
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ModEvent gq(Space& home, FloatVal n);
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/// Restrict domain values to be equal to \a n
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ModEvent eq(Space& home, int n);
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/// Restrict domain values to be equal to \a n
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ModEvent eq(Space& home, FloatNum n);
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/// Restrict domain values to be equal to \a n
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ModEvent eq(Space& home, const FloatVal& n);
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//@}
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/// \name Delta information for advisors
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//@{
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/// Return minimum value just pruned
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FloatNum min(const Delta& d) const;
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/// Return maximum value just pruned
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FloatNum max(const Delta& d) const;
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//@}
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/// \name View-dependent propagator support
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//@{
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/// Translate modification event \a me to modification event delta for view
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static ModEventDelta med(ModEvent me);
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//@}
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};
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/**
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* \brief Print float variable view
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* \relates Gecode::Float::FloatView
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*/
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template<class Char, class Traits>
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std::basic_ostream<Char,Traits>&
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operator <<(std::basic_ostream<Char,Traits>& os, const FloatView& x);
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/**
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* \brief Minus float view
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*
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* A minus float view \f$m\f$ for an float view \f$x\f$ provides
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* operations such that \f$m\f$ behaves as \f$-x\f$.
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* \ingroup TaskActorFloatView
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*/
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class MinusView : public DerivedView<FloatView> {
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protected:
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using DerivedView<FloatView>::x;
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public:
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/// \name Constructors and initialization
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//@{
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/// Default constructor
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MinusView(void);
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/// Initialize with float view \a y
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explicit MinusView(const FloatView& y);
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//@}
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/// \name Value access
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//@{
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/// Return domain
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FloatVal domain(void) const;
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/// Return minimum of domain
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FloatNum min(void) const;
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/// Return maximum of domain
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FloatNum max(void) const;
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/// Return median of domain (closest representation)
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FloatNum med(void) const;
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/**
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* \brief Return assigned value
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*
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* Throws an exception of type Float::ValOfUnassignedVar if variable
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* is not yet assigned.
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*
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*/
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FloatVal val(void) const;
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/// Return size of domain (distance between maximum and minimum)
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FloatNum size(void) const;
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//@}
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/// \name Domain tests
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//@{
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/// Test whether 0 is contained in domain
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bool zero_in(void) const;
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/// Test whether \a n is contained in domain
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bool in(FloatNum n) const;
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/// Test whether \a n is contained in domain
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bool in(const FloatVal& n) const;
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//@}
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/// \name Domain update by value
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//@{
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/// Restrict domain values to be less or equal than \a n
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ModEvent lq(Space& home, int n);
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/// Restrict domain values to be less or equal than \a n
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ModEvent lq(Space& home, FloatNum n);
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/// Restrict domain values to be less or equal than \a n
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ModEvent lq(Space& home, FloatVal n);
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/// Restrict domain values to be greater or equal than \a n
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ModEvent gq(Space& home, int n);
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/// Restrict domain values to be greater or equal than \a n
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ModEvent gq(Space& home, FloatNum n);
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/// Restrict domain values to be greater or equal than \a n
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ModEvent gq(Space& home, FloatVal n);
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/// Restrict domain values to be equal to \a n
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ModEvent eq(Space& home, int n);
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/// Restrict domain values to be equal to \a n
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ModEvent eq(Space& home, FloatNum n);
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/// Restrict domain values to be equal to \a n
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ModEvent eq(Space& home, const FloatVal& n);
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//@}
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/// \name Delta information for advisors
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//@{
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/// Return minimum value just pruned
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FloatNum min(const Delta& d) const;
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/// Return maximum value just pruned
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FloatNum max(const Delta& d) const;
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//@}
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/// \name View-dependent propagator support
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//@{
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/// Translate modification event \a me to modification event delta for view
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static ModEventDelta med(ModEvent me);
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//@}
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};
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/**
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* \brief Print float minus view
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* \relates Gecode::Float::MinusView
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*/
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template<class Char, class Traits>
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std::basic_ostream<Char,Traits>&
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operator <<(std::basic_ostream<Char,Traits>& os, const MinusView& x);
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/** \name View comparison
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* \relates Gecode::Float::MinusView
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*/
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//@{
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/// Test whether views \a x and \a y are the same
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bool operator ==(const MinusView& x, const MinusView& y);
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/// Test whether views \a x and \a y are not the same
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bool operator !=(const MinusView& x, const MinusView& y);
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//@}
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/**
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* \brief OffsetView float view
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*
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* An offset float view \f$o\f$ for an float view \f$x\f$ and
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* an float \f$c\f$ provides operations such that \f$o\f$
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* behaves as \f$x+c\f$.
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* \ingroup TaskActorFloatView
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*/
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class OffsetView : public DerivedView<FloatView> {
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protected:
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/// Offset
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FloatNum c;
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using DerivedView<FloatView>::x;
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public:
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/// \name Constructors and initialization
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//@{
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/// Default constructor
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OffsetView(void);
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/// Initialize with float view \a y and an offset c
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explicit OffsetView(const FloatView& y, FloatNum c);
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//@}
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/// \name Value access
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//@{
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/// Return offset
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FloatNum offset(void) const;
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/// Change offset to be \a n
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void offset(FloatNum n);
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/// Return domain
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FloatVal domain(void) const;
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/// Return minimum of domain
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FloatNum min(void) const;
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/// Return maximum of domain
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FloatNum max(void) const;
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/// Return median of domain (closest representation)
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FloatNum med(void) const;
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/**
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* \brief Return assigned value
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*
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* Throws an exception of type Float::ValOfUnassignedVar if variable
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* is not yet assigned.
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*
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*/
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FloatVal val(void) const;
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/// Return size of domain (distance between maximum and minimum)
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FloatNum size(void) const;
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//@}
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/// \name Domain tests
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//@{
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/// Test whether 0 is contained in domain
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bool zero_in(void) const;
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/// Test whether \a n is contained in domain
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bool in(FloatNum n) const;
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/// Test whether \a n is contained in domain
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bool in(const FloatVal& n) const;
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//@}
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/// \name Domain update by value
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//@{
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/// Restrict domain values to be less or equal than \a n
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ModEvent lq(Space& home, int n);
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/// Restrict domain values to be less or equal than \a n
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ModEvent lq(Space& home, FloatNum n);
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/// Restrict domain values to be less or equal than \a n
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ModEvent lq(Space& home, FloatVal n);
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/// Restrict domain values to be greater or equal than \a n
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ModEvent gq(Space& home, int n);
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/// Restrict domain values to be greater or equal than \a n
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ModEvent gq(Space& home, FloatNum n);
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/// Restrict domain values to be greater or equal than \a n
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ModEvent gq(Space& home, FloatVal n);
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/// Restrict domain values to be equal to \a n
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ModEvent eq(Space& home, int n);
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/// Restrict domain values to be equal to \a n
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ModEvent eq(Space& home, FloatNum n);
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/// Restrict domain values to be equal to \a n
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ModEvent eq(Space& home, const FloatVal& n);
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//@}
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/// \name Delta information for advisors
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//@{
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/// Return minimum value just pruned
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FloatNum min(const Delta& d) const;
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/// Return maximum value just pruned
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FloatNum max(const Delta& d) const;
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//@}
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/// \name View-dependent propagator support
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//@{
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/// Translate modification event \a me to modification event delta for view
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static ModEventDelta med(ModEvent me);
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//@}
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/// \name Cloning
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//@{
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void update(Space& home, OffsetView& y);
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//@}
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/// \name Ordering
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//@{
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/// Whether this view comes before view \a y (arbitray order)
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bool operator <(const OffsetView& y) const;
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//@}
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};
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/**
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* \brief Print float offset view
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* \relates Gecode::Float::OffsetView
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*/
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template<class Char, class Traits>
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std::basic_ostream<Char,Traits>&
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operator <<(std::basic_ostream<Char,Traits>& os, const OffsetView& x);
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/** \name View comparison
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* \relates Gecode::Float::OffsetView
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*/
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//@{
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/// Test whether views \a x and \a y are the same
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bool operator ==(const OffsetView& x, const OffsetView& y);
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/// Test whether views \a x and \a y are not the same
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bool operator !=(const OffsetView& x, const OffsetView& y);
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//@}
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/**
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* \brief Scale float view
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*
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* A scale float view \f$s\f$ for a float view \f$x\f$ and
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* a non-negative float \f$a\f$ provides operations such that \f$s\f$
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* behaves as \f$a\cdot x\f$.
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*
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* \ingroup TaskActorFloatView
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*/
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class ScaleView : public DerivedView<FloatView> {
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protected:
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using DerivedView<FloatView>::x;
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/// Scale factor
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FloatVal a;
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public:
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/// \name Constructors and initialization
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//@{
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/// Default constructor
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ScaleView(void);
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/// Initialize as \f$b\cdot y\f$
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ScaleView(FloatVal b, const FloatView& y);
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//@}
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/// \name Value access
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//@{
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/// Return domain
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FloatVal domain(void) const;
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/// Return scale factor of scale view
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FloatVal scale(void) const;
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/// Return minimum of domain
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FloatNum min(void) const;
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/// Return maximum of domain
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FloatNum max(void) const;
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/// Return median of domain (closest representation)
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FloatNum med(void) const;
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/**
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* \brief Return assigned value
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*
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* Throws an exception of type Float::ValOfUnassignedVar if variable
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* is not yet assigned.
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*
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*/
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FloatVal val(void) const;
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/// Return size of domain (distance between maximum and minimum)
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FloatNum size(void) const;
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//@}
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/// \name Domain tests
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//@{
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/// Test whether 0 is contained in domain
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bool zero_in(void) const;
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/// Test whether \a n is contained in domain
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bool in(FloatNum n) const;
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/// Test whether \a n is contained in domain
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bool in(const FloatVal& n) const;
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//@}
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/// \name Domain update by value
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//@{
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/// Restrict domain values to be less or equal than \a n
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ModEvent lq(Space& home, int n);
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/// Restrict domain values to be less or equal than \a n
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ModEvent lq(Space& home, FloatNum n);
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/// Restrict domain values to be less or equal than \a n
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ModEvent lq(Space& home, FloatVal n);
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/// Restrict domain values to be greater or equal than \a n
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ModEvent gq(Space& home, int n);
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/// Restrict domain values to be greater or equal than \a n
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ModEvent gq(Space& home, FloatNum n);
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/// Restrict domain values to be greater or equal than \a n
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ModEvent gq(Space& home, FloatVal n);
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/// Restrict domain values to be equal to \a n
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ModEvent eq(Space& home, int n);
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/// Restrict domain values to be equal to \a n
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ModEvent eq(Space& home, FloatNum n);
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/// Restrict domain values to be equal to \a n
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ModEvent eq(Space& home, const FloatVal& n);
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//@}
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/// \name Delta information for advisors
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//@{
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/// Return minimum value just pruned
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FloatNum min(const Delta& d) const;
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/// Return maximum value just pruned
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FloatNum max(const Delta& d) const;
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//@}
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/// \name View-dependent propagator support
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//@{
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/// Translate modification event \a me to modification event delta for view
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static ModEventDelta med(ModEvent me);
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//@}
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/// \name Cloning
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//@{
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void update(Space& home, ScaleView& y);
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//@}
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/// \name Ordering
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//@{
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/// Whether this view comes before view \a y (arbitray order)
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bool operator <(const ScaleView& y) const;
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//@}
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};
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/**
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* \brief Print scale view
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* \relates Gecode::Float::ScaleView
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*/
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template<class Char, class Traits>
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std::basic_ostream<Char,Traits>&
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operator <<(std::basic_ostream<Char,Traits>& os, const ScaleView& x);
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/** \name View comparison
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* \relates Gecode::Float::ScaleView
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*/
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//@{
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/// Test whether views \a x and \a y are the same
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bool operator ==(const ScaleView& x, const ScaleView& y);
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/// Test whether views \a x and \a y are not the same
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bool operator !=(const ScaleView& x, const ScaleView& y);
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//@}
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}}
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#include <gecode/float/var/float.hpp>
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#include <gecode/float/view/float.hpp>
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#include <gecode/float/view/minus.hpp>
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#include <gecode/float/view/offset.hpp>
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#include <gecode/float/view/scale.hpp>
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#include <gecode/float/view/print.hpp>
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#include <gecode/float/var/print.hpp>
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namespace Gecode { namespace Float {
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/**
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* \defgroup TaskActorFloatTest Testing relations between float views
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* \ingroup TaskActorFloat
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*/
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//@{
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/// Result of testing relation
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enum RelTest {
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RT_FALSE = 0, ///< Relation does not hold
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RT_MAYBE = 1, ///< Relation may hold or not
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RT_TRUE = 2 ///< Relation does hold
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};
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/// Test whether views \a x and \a y are equal
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template<class View> RelTest rtest_eq(View x, View y);
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/// Test whether view \a x and Float \a n are equal
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template<class View> RelTest rtest_eq(View x, FloatVal n);
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/// Test whether view \a x is less or equal than view \a y
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template<class View> RelTest rtest_lq(View x, View y);
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/// Test whether view \a x is less or equal than float \a n
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template<class View> RelTest rtest_lq(View x, FloatVal n);
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/// Test whether view \a x is less than view \a y
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template<class View> RelTest rtest_le(View x, View y);
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/// Test whether view \a x is less or equal than float \a n
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template<class View> RelTest rtest_le(View x, FloatVal n);
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//@}
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}}
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#include <gecode/float/view/rel-test.hpp>
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// STATISTICS: float-var
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