RegularizedGamma.P (nosqlbench)

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 Details
- P
  
  public P()
Method Details
- 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:
  
  \( P(a, x) \).