#include <ArithmeticLink.h>

Inheritance diagram for opencog::ArithmeticLink:

Collaboration diagram for opencog::ArithmeticLink:

Public Member Functions
	ArithmeticLink (const HandleSeq &oset, TruthValuePtr tv=TruthValue::NULL_TV(), AttentionValuePtr av=AttentionValue::DEFAULT_AV())

	ArithmeticLink (Link &l)

virtual Handle	reorder (void)

virtual Handle	reduce (void)

virtual Handle	execute (AtomSpace *as) const

Public Member Functions inherited from opencog::FoldLink
	FoldLink (const HandleSeq &oset, TruthValuePtr tv=TruthValue::NULL_TV(), AttentionValuePtr av=AttentionValue::DEFAULT_AV())

	FoldLink (Link &l)

Public Member Functions inherited from opencog::FunctionLink
	FunctionLink (Type, const HandleSeq &oset, TruthValuePtr tv=TruthValue::NULL_TV(), AttentionValuePtr av=AttentionValue::DEFAULT_AV())

	FunctionLink (Link &l)

virtual	~FunctionLink ()

Public Member Functions inherited from opencog::FreeLink
	FreeLink (const HandleSeq &oset, TruthValuePtr tv=TruthValue::NULL_TV(), AttentionValuePtr av=AttentionValue::DEFAULT_AV())

	FreeLink (const Handle &a, TruthValuePtr tv=TruthValue::NULL_TV(), AttentionValuePtr av=AttentionValue::DEFAULT_AV())

	FreeLink (Link &l)

virtual	~FreeLink ()

const HandleSeq &	get_vars (void)

Public Member Functions inherited from opencog::Link
	Link (Type t, const HandleSeq &oset, TruthValuePtr tv=TruthValue::DEFAULT_TV(), AttentionValuePtr av=AttentionValue::DEFAULT_AV())

	Link (Type t, const Handle &h, TruthValuePtr tv=TruthValue::DEFAULT_TV(), AttentionValuePtr av=AttentionValue::DEFAULT_AV())

	Link (Type t, const Handle &ha, const Handle &hb, TruthValuePtr tv=TruthValue::DEFAULT_TV(), AttentionValuePtr av=AttentionValue::DEFAULT_AV())

	Link (Type t, const Handle &ha, const Handle &hb, const Handle &hc, TruthValuePtr tv=TruthValue::DEFAULT_TV(), AttentionValuePtr av=AttentionValue::DEFAULT_AV())

	Link (Type t, const Handle &ha, const Handle &hb, const Handle &hc, const Handle &hd, TruthValuePtr tv=TruthValue::DEFAULT_TV(), AttentionValuePtr av=AttentionValue::DEFAULT_AV())

	Link (Link &l)

	~Link ()

Arity	getArity () const

const HandleSeq &	getOutgoingSet () const

Handle	getOutgoingAtom (Arity pos) const throw (RuntimeException)

template<class T >
bool	foreach_outgoing (bool(T::cb)(const Handle &), T data)

std::string	toString (std::string indent="")

std::string	toShortString (std::string indent="")

bool	isSource (Handle) const throw (InvalidParamException)

bool	isSource (size_t) const throw (IndexErrorException, InvalidParamException)

bool	isTarget (Handle) const throw (InvalidParamException)

bool	isTarget (size_t) const throw (IndexErrorException, InvalidParamException)

virtual bool	operator== (const Atom &) const

virtual bool	operator!= (const Atom &) const

Public Member Functions inherited from opencog::Atom
virtual	~Atom ()

Type	getType () const

bool	isType (Type t, bool subclass) const

Handle	getHandle ()

AttentionValuePtr	getAttentionValue ()

void	setAttentionValue (AttentionValuePtr)
	Sets the AttentionValue object of the atom. More...

AttentionValue::sti_t	getSTI ()
	Handy-dandy convenience getters for attention values. More...

AttentionValue::lti_t	getLTI ()

AttentionValue::vlti_t	getVLTI ()

void	setSTI (AttentionValue::sti_t stiValue)

void	setLTI (AttentionValue::lti_t ltiValue)

void	incVLTI ()

void	decVLTI ()

TruthValuePtr	getTruthValue ()

void	setTruthValue (TruthValuePtr)
	Sets the TruthValue object of the atom. More...

void	merge (TruthValuePtr)

Handle	tvmerge (TruthValuePtr tv)

size_t	getIncomingSetSize ()
	Get the size of the incoming set. More...

IncomingSet	getIncomingSet ()

template<typename OutputIterator >
OutputIterator	getIncomingSet (OutputIterator result)

template<class T >
bool	foreach_incoming (bool(T::cb)(const Handle &), T data)

template<typename OutputIterator >
OutputIterator	getIncomingSetByType (OutputIterator result, Type type, bool subclass=false)

IncomingSet	getIncomingSetByType (Type type, bool subclass=false)

Protected Member Functions
virtual double	konsd (double, double) const =0

void	init (void)

	ArithmeticLink (Type, const HandleSeq &oset, TruthValuePtr tv=TruthValue::NULL_TV(), AttentionValuePtr av=AttentionValue::DEFAULT_AV())

	ArithmeticLink (Type, const Handle &a, const Handle &b, TruthValuePtr tv=TruthValue::NULL_TV(), AttentionValuePtr av=AttentionValue::DEFAULT_AV())

Protected Member Functions inherited from opencog::FoldLink
virtual Handle	kons (const Handle &, const Handle &)=0

void	init (void)

	FoldLink (Type, const HandleSeq &oset, TruthValuePtr tv=TruthValue::NULL_TV(), AttentionValuePtr av=AttentionValue::DEFAULT_AV())

	FoldLink (Type, const Handle &a, const Handle &b, TruthValuePtr tv=TruthValue::NULL_TV(), AttentionValuePtr av=AttentionValue::DEFAULT_AV())

Protected Member Functions inherited from opencog::FunctionLink
	FunctionLink (Type, const Handle &a, TruthValuePtr tv=TruthValue::NULL_TV(), AttentionValuePtr av=AttentionValue::DEFAULT_AV())

	FunctionLink (Type, const Handle &a, const Handle &b, TruthValuePtr tv=TruthValue::NULL_TV(), AttentionValuePtr av=AttentionValue::DEFAULT_AV())

Protected Member Functions inherited from opencog::FreeLink
void	init (void)

void	find_vars (std::set< Handle > &, const HandleSeq &)

void	build_index (void)

	FreeLink (Type, const HandleSeq &oset, TruthValuePtr tv=TruthValue::NULL_TV(), AttentionValuePtr av=AttentionValue::DEFAULT_AV())

	FreeLink (Type, const Handle &a, TruthValuePtr tv=TruthValue::NULL_TV(), AttentionValuePtr av=AttentionValue::DEFAULT_AV())

	FreeLink (Type, const Handle &a, const Handle &b, TruthValuePtr tv=TruthValue::NULL_TV(), AttentionValuePtr av=AttentionValue::DEFAULT_AV())

Protected Member Functions inherited from opencog::Atom
	Atom (Type t, TruthValuePtr tv=TruthValue::DEFAULT_TV(), AttentionValuePtr av=AttentionValue::DEFAULT_AV())

void	keep_incoming_set ()

void	drop_incoming_set ()

void	insert_atom (LinkPtr)
	Add an atom to the incoming set. More...

void	remove_atom (LinkPtr)
	Remove an atom from the incoming set. More...

Protected Attributes
double	knild

Protected Attributes inherited from opencog::FoldLink
Handle	knil

Type	distributive_type = NOTYPE

Protected Attributes inherited from opencog::FreeLink
HandleSeq	_varseq

std::map< Handle, unsigned int >	_index

Protected Attributes inherited from opencog::Link
HandleSeq	_outgoing

Protected Attributes inherited from opencog::Atom
UUID	_uuid

AtomTable *	_atomTable

Type	_type

char	_flags

TruthValuePtr	_truthValue

AttentionValuePtr	_attentionValue

std::mutex	_mtx

InSetPtr	_incoming_set

Additional Inherited Members
Static Public Member Functions inherited from opencog::FunctionLink
static Handle	do_execute (AtomSpace *, const Handle &)

static LinkPtr	factory (LinkPtr)

static Handle	factory (Type, const HandleSeq &)

Protected Types inherited from opencog::Atom
typedef std::shared_ptr< InSet >	InSetPtr

Detailed Description

The ArithmeticLink implements the arithmetic operations of plus and times. It uses FoldLink to perform reduction.

Definition at line 39 of file ArithmeticLink.h.

Constructor & Destructor Documentation

ArithmeticLink::ArithmeticLink	(	Type	t,
		const HandleSeq &	oset,
		TruthValuePtr	tv = `TruthValue::NULL_TV()`,
		AttentionValuePtr	av = `AttentionValue::DEFAULT_AV()`
	)

protected

Definition at line 41 of file ArithmeticLink.cc.

References opencog::classserver(), and init().

ArithmeticLink::ArithmeticLink	(	Type	t,
		const Handle &	a,
		const Handle &	b,
		TruthValuePtr	tv = `TruthValue::NULL_TV()`,
		AttentionValuePtr	av = `AttentionValue::DEFAULT_AV()`
	)

protected

Definition at line 51 of file ArithmeticLink.cc.

References opencog::classserver(), and init().

ArithmeticLink::ArithmeticLink	(	const HandleSeq &	oset,
		TruthValuePtr	tv = `TruthValue::NULL_TV()`,
		AttentionValuePtr	av = `AttentionValue::DEFAULT_AV()`
	)

Definition at line 33 of file ArithmeticLink.cc.

References init().

ArithmeticLink::ArithmeticLink ( Link & l )

Definition at line 61 of file ArithmeticLink.cc.

References opencog::classserver(), opencog::Atom::getType(), and init().

Member Function Documentation

Handle ArithmeticLink::execute ( AtomSpace * as ) const

virtual

Reimplemented from opencog::FunctionLink.

Definition at line 159 of file ArithmeticLink.cc.

References opencog::Link::_outgoing, opencog::AtomSpace::add_atom(), opencog::classserver(), createNumberNode, opencog::Instantiator::execute(), opencog::FunctionLink::factory(), opencog::FunctionLinkCast(), get_double(), opencog::Atom::Handle, knild, konsd(), and opencog::LinkCast().

void ArithmeticLink::init ( void )

protected

Definition at line 70 of file ArithmeticLink.cc.

References knild.

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virtual double opencog::ArithmeticLink::konsd	(	double	,
		double
	)		const

protectedpure virtual

Implemented in opencog::PlusLink, and opencog::TimesLink.

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Handle ArithmeticLink::reduce ( void )

virtual

reduce() – reduce the expression by summing constants, etc.

No actual black-box evaluation or execution is performed. Only clearbox reductions are performed.

Examples: the reduct of (PlusLink (NumberNode 2) (NumberNode 2)) is (NumberNode 4) – its just a constant.

The reduct of (PlusLink (VariableNode "$x") (NumberNode 0)) is (VariableNode "$x"), because adding zero to anything yeilds the thing itself.

Reimplemented from opencog::FoldLink.

Definition at line 87 of file ArithmeticLink.cc.

References opencog::ArithmeticLinkCast(), python.stop_go::red, and reorder().

Handle ArithmeticLink::reorder ( void )

virtual

re-order the contents of an ArithmeticLink into "lexicographic" order.

The goal of the re-ordering is to simplify the reduction code, by placing atoms where they are easily found. For now, this means: first, all of the variables, next, all compound expressions, last, all number nodes We do not currently sort the variables, but maybe we should...? Sorting by variable names would hold consilidate them... The FoldLink::reduce() method already returns expressions that are almost in the correct order.

Definition at line 113 of file ArithmeticLink.cc.

References opencog::Atom::_atomTable, opencog::Link::_outgoing, opencog::AtomSpace::add_atom(), opencog::FunctionLink::factory(), opencog::AtomTable::getAtomSpace(), opencog::Atom::getType(), and python.bindlink::result.

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Member Data Documentation

double opencog::ArithmeticLink::knild

protected

Definition at line 42 of file ArithmeticLink.h.

The documentation for this class was generated from the following files:

opencog/atoms/reduct/ArithmeticLink.h
opencog/atoms/reduct/ArithmeticLink.cc

Public Member Functions

Protected Member Functions

Protected Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation