Erfcx (Apache Commons Numbers Gamma 1.2 API)

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

```
public final class Erfcx
extends Object
```
Scaled complementary error function.
\[ \operatorname{erfcx}(z) = \operatorname{erfc}(z)\ e^{z^2} \]
For large z the value is approximately:
\[ \operatorname{erfcx}(z) = \frac{1}{z \sqrt{\pi}} \]

Since:

1.1

See Also:

Erfc

- Method Summary
  
  All Methods Static Methods Concrete Methods
  Modifier and Type Method Description
  
  static double value(double x)
  Returns the scaled 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 scaled complementary error function.
    Special cases:
    
    If the argument is 0, then the result is 1.
    If the argument is +infinity, then the result is 0.
    If the argument is negative and exp(x*x) is infinite, then the result is +infinity.
    If the argument is nan, then the result is nan.
    Parameters:
    
    x - Value.
    
    Returns:
    
    the scaled complementary error function.