Factorial (Apache Commons Numbers Combinatorics 1.0 API)

java.lang.Object
- org.apache.commons.numbers.combinatorics.Factorial

public final class Factorial
extends Object

Factorial of a number.

- Method Summary
  
  All Methods Static Methods Concrete Methods
  Modifier and Type Method Description
  
  static long value(int n)
  Computes the factorial of n.
  - Methods inherited from class java.lang.Object
    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Method Detail
  - value
```
public static long value(int n)
```
    Computes the factorial of n.
    
    Parameters:
    
    n - Argument.
    
    Returns:
    
    n!
    
    Throws:
    
    IllegalArgumentException - if n < 0.
    
    IllegalArgumentException - if n > 20 (the factorial value is too large to fit in a long).