Class Constants

java.lang.Object

org.apache.commons.statistics.distribution.Constants

final class Constants
extends 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 final double	HALF_LOG_TWO_PI	0.5 * ln(2 pi).
(package private) static final double	LN_TWO	ln(2).
(package private) static final double	ROOT_PI_DIV_TWO	sqrt(pi / 2).
(package private) static final double	ROOT_TWO	sqrt(2).
(package private) static final double	ROOT_TWO_DIV_PI	sqrt(2 / pi).

Constructor Summary

Constructors

Modifier	Constructor	Description
private	Constants()	No instances.

Method Summary

Methods inherited from class Object

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

Field Details

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 Details

Constants

private Constants()

No instances.