de.lmu.ifi.dbs.elki.math
Class MathUtil

java.lang.Object
  de.lmu.ifi.dbs.elki.math.MathUtil

public class MathUtil
extends Object

A collection of math related utility functions.

Constructor Summary

MathUtil()

Method Summary

static double	hypotenuse(double a, double b) Computes the square root of the sum of the squared arguments without under or overflow.
static double	mahalanobisDistance(Matrix weightMatrix, Vector o1_minus_o2)

Methods inherited from class java.lang.Object

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

Constructor Detail

MathUtil

public MathUtil()

Method Detail

hypotenuse

public static double hypotenuse(double a,
                                double b)

Computes the square root of the sum of the squared arguments without under or overflow.

Parameters:

a - first cathetus

b - second cathetus

Returns:

sqrt(a<sup>2</sup> + b<sup>2</sup>)

mahalanobisDistance

public static double mahalanobisDistance(Matrix weightMatrix,
                                         Vector o1_minus_o2)