com.ibm.wala.util.math

Class Factorial

java.lang.Object

com.ibm.wala.util.math.Factorial

public class Factorial
extends Object

Factorial utilities

Constructor Summary

Constructors

Constructor and Description
Factorial()

Method Summary

Modifier and Type	Method and Description
static BigInteger	fact(BigInteger n) Factorial
static double	fact(double n) Factorial on doubles; avoids overflow problems present when using integers.
static int	fact(int n) Factorial
static long	fact(long n) Factorial

Methods inherited from class java.lang.Object

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

Constructor Detail

Factorial

public Factorial()

Method Detail

fact

public static long fact(long n)

Factorial

fact

public static BigInteger fact(BigInteger n)

Factorial

fact

public static double fact(double n)

Factorial on doubles; avoids overflow problems present when using integers.

Parameters:

n - arg on which to compute factorial

Returns:

(double approximation to) factorial of largest positive integer <= (n_ + epsilon)

fact

public static int fact(int n)

Factorial