org.grouplens.lenskit.util

Class MathUtils

java.lang.Object

org.grouplens.lenskit.util.MathUtils

public final class MathUtils
extends Object

Method Summary

Modifier and Type	Method and Description
static boolean	isZero(double val) Check whether a value is zero, using a default epsilon.
static boolean	isZero(double val, double epsilon) Check whether a value is zero, using a configurable epsilon.

Methods inherited from class java.lang.Object

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

Method Detail

isZero

public static boolean isZero(double val)

Check whether a value is zero, using a default epsilon.

Parameters:

val - The value.

Returns:

true if the value is within an epsilon of zero.

isZero

public static boolean isZero(double val,
                             double epsilon)

Check whether a value is zero, using a configurable epsilon.

Parameters:

val - The value.

epsilon - The tolerance.

Returns:

true if absolute value of val is less than epsilon.