About Us Home Contributors License Components Sandbox Math Overview Proposal Developers Guide Javadoc Tasks: To Do User Guide Contents Overview Statistics Data Generation Linear Algebra Numerical Analysis Special Functions Utilities Complex Numbers Distributions Project Documentation About Math Project Info Project Reports Development Process General Information Charter Volunteering Contributing Patches Releasing Components Jakarta Community Get Involved Mailing Lists Access CVS Repositories Commons Resources (Unofficial) Wiki Japanese Translation Korean Translation Related Apache Commons DB Commons XML Commons | ### 5 Special Functions #### 5.1 Overview The special functions portion of Commons-Math contains several useful functions not provided by `java.lang.Math`. These functions mostly serve as building blocks for other portions of Commons-Math but, as others may find them useful as stand-alone methods, these special functions were included as part of the Commons-Math public API. #### 5.2 Erf functions `org.apache.commons.math.special.Erf` contains several useful functions involving the Error Function, Erf.
Function | Method | Reference
--- | --- | ---
Error Function | erf | See Erf from MathWorld
#### 5.3 Gamma functions `org.apache.commons.math.special.Gamma` contains several useful functions involving the Gamma Function.
Function | Method | Reference
--- | --- | ---
Log Gamma | logGamma | See Gamma Function from MathWorld
Regularized Gamma | regularizedGammaP | See Regularized Gamma Function from MathWorld
#### 5.4 Beta funtions `org.apache.commons.math.special.Beta` contains several useful functions involving the Beta Function.
Function | Method | Reference
--- | --- | ---
Log Beta | logBeta | See Beta Function from MathWorld
Regularized Beta | regularizedBeta | See Regularized Beta Function from MathWorld