Package org.jacop.floats.constraints

Class CosPeqR

java.lang.Object

org.jacop.constraints.DecomposedConstraint<Constraint>

org.jacop.constraints.Constraint

org.jacop.floats.constraints.CosPeqR

All Implemented Interfaces:

SatisfiedPresent, Stateful

Direct Known Subclasses:

AcosPeqR

public class CosPeqR
extends Constraint
implements Stateful, SatisfiedPresent

Constraints cos(P) = R

Bounds consistency can be used; third parameter of constructor controls this.

Version:

4.8

Field Summary

Fields

Modifier and Type	Field	Description
(package private) boolean	firstConsistencyCheck
(package private) int	firstConsistencyLevel
(package private) static java.util.concurrent.atomic.AtomicInteger	idNumber
FloatVar	p	It contains variable p.
FloatVar	q	It contains variable q.

Fields inherited from class org.jacop.constraints.Constraint

atomicExecution, consistencyPruningEvents, constraintScope, earlyTerminationOK, increaseWeight, numberId, scope, trace

Fields inherited from class org.jacop.constraints.DecomposedConstraint

queueIndex

Constructor Summary

Constructors

Constructor	Description
CosPeqR(FloatVar p, FloatVar q)	It constructs cos(P) = Q constraints.

Method Summary

Modifier and Type	Method	Description
(package private) void	boundConsistency(Store store)
void	consistency(Store store)	It is a (most probably incomplete) consistency function which removes the values from variables domains.
FloatVar	derivative(Store store, FloatVar f, java.util.Set<FloatVar> vars, FloatVar x)
int	getDefaultConsistencyPruningEvent()
(package private) int	intervalNo(double d)
(package private) FloatInterval	normalize(FloatVar v)
void	removeLevel(int level)	This function is called in case of the backtrack, so a constraint can clear the queue of changed variables which is no longer valid.
boolean	satisfied()	It checks if the constraint is satisfied.
java.lang.String	toString()	It produces a string representation of a constraint state.

Methods inherited from class org.jacop.constraints.Constraint

afc, arguments, cleanAfterFailure, decompose, getConsistencyPruningEvent, getGuideConstraint, getGuideValue, getGuideVariable, grounded, grounded, id, impose, impose, imposeDecomposition, increaseWeight, intArrayToString, numberArgs, queueVariable, removeConstraint, requiresMonotonicity, setConsistencyPruningEvent, setConstraintScope, setScope, setScope, setScope, setScope, setScope, setWatchedVariableGrounded, supplyGuideFeedback, updateAFC, watchedVariableGrounded

Methods inherited from class org.jacop.constraints.DecomposedConstraint

auxiliaryVariables, checkInput, checkInput, checkInputForDuplication, checkInputForDuplicationSkipSingletons, checkInputForNullness, checkInputForNullness, checkInputForNullness, getDubletonsSkipSingletons, imposeDecomposition

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.jacop.api.Stateful

isStateful

Field Detail

idNumber

static java.util.concurrent.atomic.AtomicInteger idNumber

firstConsistencyCheck

boolean firstConsistencyCheck

firstConsistencyLevel

int firstConsistencyLevel

p

public FloatVar p

It contains variable p.

q

public FloatVar q

It contains variable q.

Constructor Detail

CosPeqR

public CosPeqR(FloatVar p,
               FloatVar q)

It constructs cos(P) = Q constraints.

Parameters:

p - variable P

q - variable Q

Method Detail

removeLevel

public void removeLevel(int level)

Description copied from interface: Stateful

This function is called in case of the backtrack, so a constraint can clear the queue of changed variables which is no longer valid. This function is called *before* all timestamps, variables, mutablevariables have reverted to their previous value.

Specified by:

removeLevel in interface Stateful

Parameters:

level - the level which is being removed.

consistency

public void consistency(Store store)

Description copied from class: Constraint

It is a (most probably incomplete) consistency function which removes the values from variables domains. Only values which do not have any support in a solution space are removed.

Specified by:

consistency in class Constraint

Parameters:

store - constraint store within which the constraint consistency is being checked.

boundConsistency

void boundConsistency(Store store)

normalize

FloatInterval normalize(FloatVar v)

intervalNo

int intervalNo(double d)

getDefaultConsistencyPruningEvent

public int getDefaultConsistencyPruningEvent()

Specified by:

getDefaultConsistencyPruningEvent in class Constraint

satisfied

public boolean satisfied()

Description copied from interface: SatisfiedPresent

It checks if the constraint is satisfied. It can return false even if constraint is satisfied but not all variables in its scope are grounded. It needs to return true if all variables in its scope are grounded and constraint is satisfied.

Implementations of this interface for constraints that are not PrimitiveConstraint may require constraint imposition and consistency check as a requirement to work correctly.

Specified by:

satisfied in interface SatisfiedPresent

Returns:

true if constraint is possible to verify that it is satisfied.

toString

public java.lang.String toString()

Description copied from class: Constraint

It produces a string representation of a constraint state.

Overrides:

toString in class Constraint

derivative

public FloatVar derivative(Store store,
                           FloatVar f,
                           java.util.Set<FloatVar> vars,
                           FloatVar x)

Overrides:

derivative in class DecomposedConstraint<Constraint>