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java.lang.Objectorg.apache.commons.math.util.ContinuedFraction
Provides a generic means to evaluate continued fractions. Subclasses simply provided the a and b coefficients to evaluate the continued fraction.
References:
Constructor Summary | |
protected |
ContinuedFraction()
Default constructor. |
Method Summary | |
double |
evaluate(double x)
Evaluates the continued fraction at the value x. |
double |
evaluate(double x,
double epsilon)
Evaluates the continued fraction at the value x. |
double |
evaluate(double x,
double epsilon,
int maxIterations)
Evaluates the continued fraction at the value x. |
double |
evaluate(double x,
int maxIterations)
Evaluates the continued fraction at the value x. |
protected abstract double |
getA(int n,
double x)
Access the n-th a coefficient of the continued fraction. |
protected abstract double |
getB(int n,
double x)
Access the n-th b coefficient of the continued fraction. |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
protected ContinuedFraction()
Method Detail |
protected abstract double getA(int n, double x)
n
- the coefficient index to retrieve.x
- the evaluation point.
protected abstract double getB(int n, double x)
n
- the coefficient index to retrieve.x
- the evaluation point.
public double evaluate(double x) throws MathException
x
- the evaluation point.
MathException
- if the algorithm fails to converge.public double evaluate(double x, double epsilon) throws MathException
x
- the evaluation point.epsilon
- maximum error allowed.
MathException
- if the algorithm fails to converge.public double evaluate(double x, int maxIterations) throws MathException
x
- the evaluation point.maxIterations
- maximum number of convergents
MathException
- if the algorithm fails to converge.public double evaluate(double x, double epsilon, int maxIterations) throws MathException
Evaluates the continued fraction at the value x.
The implementation of this method is based on equations 14-17 of:
x
- the evaluation point.epsilon
- maximum error allowed.maxIterations
- maximum number of convergents
MathException
- if the algorithm fails to converge.
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