Package etomica.veos.bigdecimal

Class Factorial

java.lang.Object

etomica.veos.bigdecimal.Factorial

public class Factorial
extends java.lang.Object

Factorials.

Since:

2006-06-25, 2012-02-15 Storage of the values based on Ifactor, not BigInteger.

Constructor Summary

Constructors

Constructor	Description
Factorial()	ctor().

Method Summary

Modifier and Type	Method	Description
java.math.BigInteger	at(int n)	Compute the factorial of the non-negative integer.
Ifactor	toIfactor(int n)	Compute the factorial of the non-negative integer.

Methods inherited from class java.lang.Object

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

Constructor Detail

Factorial

public Factorial()

ctor(). Initialize the vector of the factorials with 0!=1 and 1!=1.

Method Detail

at

public java.math.BigInteger at(int n)

Compute the factorial of the non-negative integer.

Parameters:

n - the argument to the factorial, non-negative.

Returns:

the factorial of n.

toIfactor

public Ifactor toIfactor(int n)

Compute the factorial of the non-negative integer.

Parameters:

n - the argument to the factorial, non-negative.

Returns:

the factorial of n.