MathFunctions (JavaPermutationTools - A Java API for computation on permutations)

java.lang.Object
- org.cicirello.math.MathFunctions

```
public final class MathFunctions
extends Object
```
MathFunctions is a class of utility methods that implement various mathematical functions.

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`static double`	`logGamma(double n)`	Implementation of the natural log of the absolute value of the gamma function.
`static double`	`pow(double a, int b)`	Computes a^b, where the exponent b is an integer.

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

- Method Detail
  - pow
```
public static double pow(double a,
                         int b)
```
    Computes a^b, where the exponent b is an integer. This is more efficient than using Math.pow(double, double) since it exploits the integer type of the exponent.
    
    Parameters:
    
    a - The base.
    
    b - The exponent.
    
    Returns:
    
    a^b
  - logGamma
```
public static double logGamma(double n)
```
    Implementation of the natural log of the absolute value of the gamma function.
    
    Parameters:
    
    n - input parameter to the function
    
    Returns:
    
    ln(abs(gamma(n)))