Erf (VirtualDataSet API)

java.lang.Object
- org.apache.commons.numbers.gamma.Erf

public class Erf
extends java.lang.Object

Error function.

- Constructor Summary
  
  Constructors
  Constructor Description
  
  Erf()
- Method Summary
  
  Modifier and Type Method Description
  
  static double value(double x)
  This implementation computes erf(x) using the regularized gamma function, following Erf, equation (3)
  - Methods inherited from class java.lang.Object
    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - Erf
```
public Erf()
```
- Method Detail
  - value
```
public static double value(double x)
```
    This implementation computes erf(x) using the regularized gamma function, following Erf, equation (3)
    
    The returned value is always between -1 and 1 (inclusive). If abs(x) > 40, then Erf.value(x) is indistinguishable from either 1 or -1 at double precision, so the appropriate extreme value is returned.
    
    Parameters:
    
    x - the value.
    
    Returns:
    
    the error function.
    
    Throws:
    
    java.lang.ArithmeticException - if the algorithm fails to converge.
    
    See Also:
    
    RegularizedGamma.P.value(double, double, double, int)