org.apache.commons.math3.special

Class BesselJ.BesselJResult

java.lang.Object

org.apache.commons.math3.special.BesselJ.BesselJResult

Enclosing class:

BesselJ

public static class BesselJ.BesselJResult
extends java.lang.Object

Encapsulates the results returned by BesselJ.rjBesl(double, double, int).

getVals() returns the computed function values. getnVals() is the number of values among those returned by getnVals() that can be considered accurate.

• nVals < 0: An argument is out of range. For example, nb <= 0, alpha < 0 or > 1, or x is too large. In this case, b(0) is set to zero, the remainder of the b-vector is not calculated, and nVals is set to MIN(nb,0) - 1 so that nVals != nb.
• nb > nVals > 0: Not all requested function values could be calculated accurately. This usually occurs because nb is much larger than abs(x). In this case, b(n) is calculated to the desired accuracy for n < nVals, but precision is lost for nVals < n <= nb. If b(n) does not vanish for n > nVals (because it is too small to be represented), and b(n)/b(nVals) = \(10^{-k}\), then only the first NSIG-k significant figures of b(n) can be trusted.

Field Summary

Fields

Modifier and Type	Field and Description
private int	nVals Valid value count
private double[]	vals Bessel function values

Constructor Summary

Constructors

Constructor and Description
BesselJResult(double[] b, int n) Create a new BesselJResult with the given values and valid value count.

Method Summary

Modifier and Type	Method and Description
int	getnVals()
double[]	getVals()

Methods inherited from class java.lang.Object

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

Field Detail

vals

private final double[] vals

Bessel function values

nVals

private final int nVals

Valid value count

Constructor Detail

BesselJResult

public BesselJResult(double[] b,
                     int n)

Create a new BesselJResult with the given values and valid value count.

Parameters:

b - values

n - count of valid values

Method Detail

getVals

public double[] getVals()

Returns:

the computed function values

getnVals

public int getnVals()

Returns:

the number of valid function values (normally the same as the length of the array returned by getnVals())