Erfc (Apache Commons Numbers 1.1)

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

```
public final class Erfc
extends Object
```
Complementary error function.
\[ \begin{aligned} \operatorname{erfc}(z) &= 1 - \operatorname{erf}(z) \\ &= \frac{2}{\sqrt\pi}\int_z^{\infty} e^{-t^2}\,dt \end{aligned} \]

- Method Summary
  
  All Methods Static Methods Concrete Methods
  Modifier and Type Method Description
  
  static double value(double x)
  Returns the complementary error function.
  - Methods inherited from class java.lang.Object
    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Method Detail
  - value
```
public static double value(double x)
```
    Returns the complementary error function.
    The value returned is always between 0 and 2 (inclusive). The appropriate extreme is returned when erfc(x) is indistinguishable from either 0 or 2 at double precision.
    Special cases:
    
    If the argument is 0, then the result is 1.
    If the argument is > 28, then the result is 0.
    If the argument is < 6, then the result is 2.
    If the argument is nan, then the result is nan.
    Parameters:
    
    x - Value.
    
    Returns:
    
    the complementary error function.