com.numericalmethod.suanshu.analysis.function.special
Enum CumulativeNormal.Method

java.lang.Object
  java.lang.Enum<CumulativeNormal.Method>
      com.numericalmethod.suanshu.analysis.function.special.CumulativeNormal.Method

All Implemented Interfaces:

java.io.Serializable, java.lang.Comparable<CumulativeNormal.Method>

Enclosing class:

CumulativeNormal

public static enum CumulativeNormal.Method
extends java.lang.Enum<CumulativeNormal.Method>

the methods available to compute the cumulative Normal

Enum Constant Summary

GAMMA
Cumulative Normal can be written as a function of the gamma function.

HASTINGS
HASTINGS is faster, but is less accurate.

MARSAGLIA
MARSAGLIA is about 3 times slower, but is more accurate.

Method Summary

static CumulativeNormal.Method	valueOf(java.lang.String name) Returns the enum constant of this type with the specified name.
static CumulativeNormal.Method[]	values() Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

HASTINGS

public static final CumulativeNormal.Method HASTINGS

HASTINGS is faster, but is less accurate. It has a maximum absolute error < 7.5e-8.

MARSAGLIA

public static final CumulativeNormal.Method MARSAGLIA

MARSAGLIA is about 3 times slower, but is more accurate. It has a maximum relative error < 1e-15 for 0 < x < 6.23025, and relative error < 1e-12 for larger x.

GAMMA

public static final CumulativeNormal.Method GAMMA

Cumulative Normal can be written as a function of the gamma function. Not implemented.

Method Detail

values

public static CumulativeNormal.Method[] values()

Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:

for (CumulativeNormal.Method c : CumulativeNormal.Method.values())
    System.out.println(c);

Returns:

an array containing the constants of this enum type, in the order they are declared

valueOf

public static CumulativeNormal.Method valueOf(java.lang.String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

java.lang.IllegalArgumentException - if this enum type has no constant with the specified name

java.lang.NullPointerException - if the argument is null