Package org.apache.commons.math4.legacy.analysis.integration

Interface UnivariateIntegrator

All Known Implementing Classes:

BaseAbstractUnivariateIntegrator, IterativeLegendreGaussIntegrator, MidPointIntegrator, RombergIntegrator, SimpsonIntegrator, TrapezoidIntegrator

public interface UnivariateIntegrator

Interface for univariate real integration algorithms.

Since:

1.2

Method Summary

Modifier and Type	Method	Description
double	getAbsoluteAccuracy()	Get the absolute accuracy.
int	getEvaluations()	Get the number of function evaluations of the last run of the integrator.
int	getIterations()	Get the number of iterations of the last run of the integrator.
int	getMaximalIterationCount()	Get the upper limit for the number of iterations.
int	getMinimalIterationCount()	Get the min limit for the number of iterations.
double	getRelativeAccuracy()	Get the relative accuracy.
double	integrate(int maxEval, UnivariateFunction f, double min, double max)	Integrate the function in the given interval.

Method Detail

getRelativeAccuracy

double getRelativeAccuracy()

Get the relative accuracy.

Returns:

the accuracy

getAbsoluteAccuracy

double getAbsoluteAccuracy()

Get the absolute accuracy.

Returns:

the accuracy

getMinimalIterationCount

int getMinimalIterationCount()

Get the min limit for the number of iterations.

Returns:

the actual min limit

getMaximalIterationCount

int getMaximalIterationCount()

Get the upper limit for the number of iterations.

Returns:

the actual upper limit

integrate

double integrate(int maxEval,
                 UnivariateFunction f,
                 double min,
                 double max)

Integrate the function in the given interval.

Parameters:

maxEval - Maximum number of evaluations.

f - the integrand function

min - the lower bound for the interval

max - the upper bound for the interval

Returns:

the value of integral

Throws:

TooManyEvaluationsException - if the maximum number of function evaluations is exceeded

MaxCountExceededException - if the maximum iteration count is exceeded or the integrator detects convergence problems otherwise

MathIllegalArgumentException - if min > max or the endpoints do not satisfy the requirements specified by the integrator

NullArgumentException - if f is null.

getEvaluations

int getEvaluations()

Get the number of function evaluations of the last run of the integrator.

Returns:

number of function evaluations

getIterations

int getIterations()

Get the number of iterations of the last run of the integrator.

Returns:

number of iterations