Package it.unimi.dsi.util

Class KahanSummation

java.lang.Object

it.unimi.dsi.util.KahanSummation

public class KahanSummation
extends Object

Kahan's summation algorithm encapsulated in an object.

Constructor Summary

Constructors

Constructor	Description
KahanSummation()

Method Summary

Modifier and Type	Method	Description
void	add(double v)	Adds a value.
void	reset()	Resets the current value and correction to zero.
double	value()	Returns the sum computed so far.

Methods inherited from class java.lang.Object

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

Constructor Details

KahanSummation

public KahanSummation()

Method Details

add

public void add(double v)

Adds a value.

Parameters:

v - the value to be added to the sum.

value

public double value()

Returns the sum computed so far.

Returns:

the sum computed so far.

reset

public void reset()

Resets the current value and correction to zero.