MathUtil (anteros-mqtt-core 1.0.6 API)

java.lang.Object
- br.com.anteros.mqtt.core.util.MathUtil

public final class MathUtil
extends Object

Math utility methods.

Author:: netty

Method Summary

All Methods Static Methods Concrete Methods
Modifier and Type	Method	Description
`static int`	`findNextPositivePowerOfTwo(int value)`	Fast method of finding the next power of 2 greater than or equal to the supplied value.
`static int`	`safeFindNextPositivePowerOfTwo(int value)`	Fast method of finding the next power of 2 greater than or equal to the supplied value.

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

- Method Detail
  - findNextPositivePowerOfTwo
```
public static int findNextPositivePowerOfTwo(int value)
```
    Fast method of finding the next power of 2 greater than or equal to the supplied value.
    If the value is <= 0 then 1 will be returned. This method is not suitable for Integer.MIN_VALUE or numbers greater than 2^30.
    
    Parameters:
    
    value - from which to search for next power of 2
    
    Returns:
    
    The next power of 2 or the value itself if it is a power of 2
  - safeFindNextPositivePowerOfTwo
```
public static int safeFindNextPositivePowerOfTwo(int value)
```
    Fast method of finding the next power of 2 greater than or equal to the supplied value.
    This method will do runtime bounds checking and call findNextPositivePowerOfTwo(int) if within a valid range.
    Parameters:
    
    value - from which to search for next power of 2
    
    Returns:
    
    The next power of 2 or the value itself if it is a power of 2.
    Special cases for return values are as follows:
    
    <= 0 = 1
    
    >= 2^30 = 2^30