Package com.google.refine.expr.functions.math

Class FactN

java.lang.Object

com.google.refine.expr.functions.math.FactN

All Implemented Interfaces:

Function

public class FactN
extends Object
implements Function

Constructor Summary

Constructors

Constructor	Description
FactN()

Method Summary

Modifier and Type	Method	Description
Object	call(Properties bindings, Object[] args)
static long	factorial(long i, long step)	Calculates the factorial of an integer, i, for a decreasing step of n.
String	getDescription()
String	getParams()
String	getReturns()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

FactN

public FactN()

Method Details

call

public Object call(Properties bindings,
 Object[] args)

Specified by:

call in interface 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()

Specified by:

getDescription in interface Function

getParams

public String getParams()

Specified by:

getParams in interface Function

getReturns

public String getReturns()

Specified by:

getReturns in interface Function