MathUtil (JPEG2000 support for Java Advanced Imaging Image I/O Tools API 1.4.0 API)

java.lang.Object
- jj2000.j2k.util.MathUtil

```
public class MathUtil
extends Object
```
This class contains a collection of utility methods fro mathematical operations. All methods are static.

Constructor Summary

Constructors
Constructor Description

MathUtil()

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`static int`	`gcd(int[] x)`	Method that calculates the Greatest Common Divisor (GCD) of several positive integer numbers.
`static int`	`gcd(int x1, int x2)`	Method that calculates the Greatest Common Divisor (GCD) of two positive integer numbers.
`static int`	`lcm(int[] x)`	Method that calculates the Least Common Multiple (LCM) of several positive integer numbers.
`static int`	`lcm(int x1, int x2)`	Method that calculates the Least Common Multiple (LCM) of two strictly positive integer numbers.
`static int`	`log2(int x)`	Method that calculates the floor of the log, base 2, of 'x'.

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

- Constructor Detail
  - MathUtil
```
public MathUtil()
```
- Method Detail
  - log2
```
public static int log2(int x)
```
    Method that calculates the floor of the log, base 2, of 'x'. The calculation is performed in integer arithmetic, therefore, it is exact.
    
    Parameters:
    
    x - The value to calculate log2 on.
    
    Returns:
    
    floor(log(x)/log(2)), calculated in an exact way.
  - lcm
```
public static final int lcm(int x1,
                            int x2)
```
    Method that calculates the Least Common Multiple (LCM) of two strictly positive integer numbers.
    
    Parameters:
    
    x1 - First number
    
    x2 - Second number
  - lcm
```
public static final int lcm(int[] x)
```
    Method that calculates the Least Common Multiple (LCM) of several positive integer numbers.
    
    Parameters:
    
    x - Array containing the numbers.
  - gcd
```
public static final int gcd(int x1,
                            int x2)
```
    Method that calculates the Greatest Common Divisor (GCD) of two positive integer numbers.
  - gcd
```
public static final int gcd(int[] x)
```
    Method that calculates the Greatest Common Divisor (GCD) of several positive integer numbers.
    
    Parameters:
    
    x - Array containing the numbers.