RegularizedGamma.P (VirtualDataSet API)

java.lang.Object
- org.apache.commons.numbers.gamma.RegularizedGamma.P

Enclosing class:

RegularizedGamma
```
public static class RegularizedGamma.P
extends java.lang.Object
```
\( P(a, x) \) regularized Gamma function. Class is immutable.

Constructor Summary

Constructors
Constructor Description

P()

Method Summary

Modifier and Type	Method	Description
`static double`	`value(double a, double x)`	Computes the regularized gamma function \( P(a, x) \).
`static double`	`value(double a, double x, double epsilon, int maxIterations)`	Computes the regularized gamma function \( P(a, x) \).

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - P
```
public P()
```
- Method Detail
  - value
```
public static double value(double a,
                           double x)
```
    Computes the regularized gamma function \( P(a, x) \).
    
    Parameters:
    
    a - Argument.
    
    x - Argument.
    
    Returns:
    
    \( P(a, x) \).
  - value
```
public static double value(double a,
                           double x,
                           double epsilon,
                           int maxIterations)
```
    Computes the regularized gamma function \( P(a, x) \). The implementation of this method is based on:
    
    Regularized Gamma Function, equation (1)
    
    Incomplete Gamma Function, equation (4).
    
    Confluent Hypergeometric Function of the First Kind, equation (1).
    Parameters:
    
    a - Argument.
    
    x - Argument.
    
    epsilon - Tolerance in continued fraction evaluation.
    
    maxIterations - Maximum number of iterations in continued fraction evaluation.
    
    Returns:
    
    \( P(a, x) \).