Package org.apache.commons.math.analysis.solvers

Class UnivariateRealSolverImpl

java.lang.Object

org.apache.commons.math.ConvergingAlgorithmImpl

org.apache.commons.math.analysis.solvers.UnivariateRealSolverImpl

All Implemented Interfaces:

UnivariateRealSolver, ConvergingAlgorithm

Direct Known Subclasses:

BisectionSolver, BrentSolver, LaguerreSolver, MullerSolver, NewtonSolver, RiddersSolver, SecantSolver

@Deprecated
public abstract class UnivariateRealSolverImpl
extends ConvergingAlgorithmImpl
implements UnivariateRealSolver

Deprecated.

in 2.2 (to be removed in 3.0).

Provide a default implementation for several functions useful to generic solvers.

Method Summary

Modifier and Type	Method	Description
double	getFunctionValue()	Deprecated. Get the result of the last run of the solver.
double	getFunctionValueAccuracy()	Deprecated. Get the actual function value accuracy.
double	getResult()	Deprecated. Get the result of the last run of the solver.
void	resetFunctionValueAccuracy()	Deprecated. Reset the actual function accuracy to the default.
void	setFunctionValueAccuracy(double accuracy)	Deprecated. Set the function value accuracy.
double	solve(int maxEval, UnivariateRealFunction function, double min, double max)	Deprecated. Solve for a zero root in the given interval.
double	solve(int maxEval, UnivariateRealFunction function, double min, double max, double startValue)	Deprecated. Solve for a zero in the given interval, start at startValue.

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.solvers.UnivariateRealSolver

solve, solve, solve, solve

Method Detail

getResult

public double getResult()

Deprecated.

Get the result of the last run of the solver.

Specified by:

getResult in interface UnivariateRealSolver

Returns:

the last result.

getFunctionValue

public double getFunctionValue()

Deprecated.

Get the result of the last run of the solver.

Specified by:

getFunctionValue in interface UnivariateRealSolver

Returns:

the value of the function at the last result.

setFunctionValueAccuracy

public void setFunctionValueAccuracy(double accuracy)

Deprecated.

Set the function value accuracy.

This is used to determine when an evaluated function value or some other value which is used as divisor is zero.

This is a safety guard and it shouldn't be necessary to change this in general.

Specified by:

setFunctionValueAccuracy in interface UnivariateRealSolver

Parameters:

accuracy - the accuracy.

getFunctionValueAccuracy

public double getFunctionValueAccuracy()

Deprecated.

Get the actual function value accuracy.

Specified by:

getFunctionValueAccuracy in interface UnivariateRealSolver

Returns:

the accuracy

resetFunctionValueAccuracy

public void resetFunctionValueAccuracy()

Deprecated.

Reset the actual function accuracy to the default. The default value is provided by the solver implementation.

Specified by:

resetFunctionValueAccuracy in interface UnivariateRealSolver

solve

public double solve(int maxEval,
                    UnivariateRealFunction function,
                    double min,
                    double max)
             throws ConvergenceException,
                    FunctionEvaluationException

Deprecated.

Solve for a zero root in the given interval.

A solver may require that the interval brackets a single zero root. Solvers that do require bracketing should be able to handle the case where one of the endpoints is itself a root.

Parameters:

function - the function to solve.

min - the lower bound for the interval.

max - the upper bound for the interval.

maxEval - Maximum number of evaluations.

Returns:

a value where the function is zero

Throws:

ConvergenceException - if the maximum iteration count is exceeded or the solver detects convergence problems otherwise.

FunctionEvaluationException - if an error occurs evaluating the function

java.lang.IllegalArgumentException - if min > max or the endpoints do not satisfy the requirements specified by the solver

Since:

2.2

solve

public double solve(int maxEval,
                    UnivariateRealFunction function,
                    double min,
                    double max,
                    double startValue)
             throws ConvergenceException,
                    FunctionEvaluationException,
                    java.lang.IllegalArgumentException

Deprecated.

Solve for a zero in the given interval, start at startValue.

A solver may require that the interval brackets a single zero root. Solvers that do require bracketing should be able to handle the case where one of the endpoints is itself a root.

Parameters:

function - the function to solve.

min - the lower bound for the interval.

max - the upper bound for the interval.

startValue - the start value to use

maxEval - Maximum number of evaluations.

Returns:

a value where the function is zero

Throws:

ConvergenceException - if the maximum iteration count is exceeded or the solver detects convergence problems otherwise.

FunctionEvaluationException - if an error occurs evaluating the function

java.lang.IllegalArgumentException - if min > max or the arguments do not satisfy the requirements specified by the solver

Since:

2.2