Package org.apache.commons.math.analysis.integration

Class UnivariateRealIntegratorImpl

java.lang.Object

org.apache.commons.math.ConvergingAlgorithmImpl

org.apache.commons.math.analysis.integration.UnivariateRealIntegratorImpl

All Implemented Interfaces:

UnivariateRealIntegrator, ConvergingAlgorithm

Direct Known Subclasses:

LegendreGaussIntegrator, RombergIntegrator, SimpsonIntegrator, TrapezoidIntegrator

public abstract class UnivariateRealIntegratorImpl
extends ConvergingAlgorithmImpl
implements UnivariateRealIntegrator

Provide a default implementation for several generic functions.

Since:

1.2

Method Summary

Modifier and Type	Method	Description
int	getMinimalIterationCount()	Get the lower limit for the number of iterations.
double	getResult()	Access the last computed integral.
void	resetMinimalIterationCount()	Reset the lower limit for the number of iterations to the default.
void	setMinimalIterationCount(int count)	Set the lower limit for the number of iterations.

Methods inherited from class org.apache.commons.math.ConvergingAlgorithmImpl

getAbsoluteAccuracy, getIterationCount, getMaximalIterationCount, getRelativeAccuracy, resetAbsoluteAccuracy, resetMaximalIterationCount, resetRelativeAccuracy, setAbsoluteAccuracy, setMaximalIterationCount, setRelativeAccuracy

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.apache.commons.math.ConvergingAlgorithm

getAbsoluteAccuracy, getIterationCount, getMaximalIterationCount, getRelativeAccuracy, resetAbsoluteAccuracy, resetMaximalIterationCount, resetRelativeAccuracy, setAbsoluteAccuracy, setMaximalIterationCount, setRelativeAccuracy

Methods inherited from interface org.apache.commons.math.analysis.integration.UnivariateRealIntegrator

integrate, integrate

Method Details

getResult

public double getResult()
                 throws IllegalStateException

Access the last computed integral.

Specified by:

getResult in interface UnivariateRealIntegrator

Returns:

the last computed integral

Throws:

IllegalStateException - if no integral has been computed

setMinimalIterationCount

public void setMinimalIterationCount(int count)

Set the lower limit for the number of iterations.

Minimal iteration is needed to avoid false early convergence, e.g. the sample points happen to be zeroes of the function. Users can use the default value or choose one that they see as appropriate.

A ConvergenceException will be thrown if this number is not met.

Specified by:

setMinimalIterationCount in interface UnivariateRealIntegrator

Parameters:

count - minimum number of iterations

getMinimalIterationCount

public int getMinimalIterationCount()

Get the lower limit for the number of iterations.

Specified by:

getMinimalIterationCount in interface UnivariateRealIntegrator

Returns:

the actual lower limit

resetMinimalIterationCount

public void resetMinimalIterationCount()

Reset the lower limit for the number of iterations to the default.

The default value is supplied by the implementation.

Specified by:

resetMinimalIterationCount in interface UnivariateRealIntegrator

See Also:

• UnivariateRealIntegrator.setMinimalIterationCount(int)