org.jquantlib.math

Class Closeness

java.lang.Object

org.jquantlib.math.Closeness

public final class Closeness
extends java.lang.Object

Follows somewhat the advice of Knuth on checking for floating-point equality. The closeness relationship is:

where is times the machine accuracy;

equals 42 if not given.

Constructor Summary

Constructors

Constructor and Description
Closeness()

Method Summary

Modifier and Type	Method and Description
static boolean	isClose(double x, double y)
static boolean	isClose(double x, double y, int n)
static boolean	isCloseEnough(double x, double y)
static boolean	isCloseEnough(double x, double y, int n)

Methods inherited from class java.lang.Object

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

Constructor Detail

Closeness

public Closeness()

Method Detail

isClose

public static final boolean isClose(double x,
                                    double y)

isClose

public static final boolean isClose(double x,
                                    double y,
                                    int n)

isCloseEnough

public static final boolean isCloseEnough(double x,
                                          double y)

isCloseEnough

public static final boolean isCloseEnough(double x,
                                          double y,
                                          int n)