FactN (OpenRefine 4.0-SNAPSHOT API)

java.lang.Object
- org.openrefine.grel.PureFunction
- - org.openrefine.expr.functions.math.FactN

All Implemented Interfaces:

Serializable, Function
```
public class FactN
extends PureFunction
```
See Also:

Serialized Form

Constructor Summary

Constructors
Constructor Description

FactN()

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`Object`	`call(Object[] args)`	Computes the value of the function on the given arguments
`static long`	`factorial(long i, long step)`	Calculates the factorial of an integer, i, for a decreasing step of n. e.g.
`String`	`getDescription()`
`String`	`getParams()`
`String`	`getReturns()`

Methods inherited from class org.openrefine.grel.PureFunction
call

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - FactN
```
public FactN()
```
- Method Detail
  - call
```
public Object call(Object[] args)
```
    Description copied from class: PureFunction
    
    Computes the value of the function on the given arguments
    
    Specified by:
    
    call in class PureFunction
    
    Parameters:
    
    args - the values of the arguments
    
    Returns:
    
    the return value of the function
  - factorial
```
public static long factorial(long i,
                             long step)
```
    Calculates the factorial of an integer, i, for a decreasing step of n. e.g. A double factorial would have a step of 2. Returns 1 for zero and negative integers.
  - getDescription
```
public String getDescription()
```
  - getParams
```
public String getParams()
```
  - getReturns
```
public String getReturns()
```