Constants

java.lang.Object
- org.apache.commons.statistics.distribution.Constants

```
final class Constants
extends java.lang.Object
```
Constants for distribution calculations.
Constants should evaluate to the closest IEEE double. Expressions may have been computed using an arbitrary precision math library or obtained from existing online resources. Some expressions will not be the closest double if evaluated using the JDK's Math functions using double precision.

Field Summary

Fields
Modifier and Type	Field	Description
`(package private) static double`	`HALF_LOG_TWO_PI`	0.5 * ln(2 pi).
`(package private) static double`	`LN_TWO`	ln(2).
`(package private) static double`	`ROOT_PI_DIV_TWO`	sqrt(pi / 2).
`(package private) static double`	`ROOT_TWO`	sqrt(2).
`(package private) static double`	`ROOT_TWO_DIV_PI`	sqrt(2 / pi).

Constructor Summary

Constructors
Modifier Constructor Description

private Constants()
No instances.

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

- Field Detail
  - ROOT_TWO
```
static final double ROOT_TWO
```
    sqrt(2). https://oeis.org/A002193.
    
    See Also:
    
    Constant Field Values
  - ROOT_TWO_DIV_PI
```
static final double ROOT_TWO_DIV_PI
```
    sqrt(2 / pi). https://oeis.org/A076668.
    
    See Also:
    
    Constant Field Values
  - ROOT_PI_DIV_TWO
```
static final double ROOT_PI_DIV_TWO
```
    sqrt(pi / 2). https://oeis.org/A069998.
    
    See Also:
    
    Constant Field Values
  - LN_TWO
```
static final double LN_TWO
```
    ln(2). https://oeis.org/A002162.
    
    See Also:
    
    Constant Field Values
  - HALF_LOG_TWO_PI
```
static final double HALF_LOG_TWO_PI
```
    0.5 * ln(2 pi). https://oeis.org/A075700.
    
    See Also:
    
    Constant Field Values
- Constructor Detail
  - Constants
```
private Constants()
```
    No instances.