measure.cpp

clustering for ns-2 simulation

#include "Measure.h"

/**
 * Add a new sperimental measuration.
 */
void 
Measure::addMeasure(double value)
{
	averageMeasure += value;
	varianceMeasure += (value * value);
	count++;
}

/**
 * Return average value of measures.
 */
double 
Measure::getAverage()
{
	return (averageMeasure / count);
}	

/**
 * Return variance between measures.
 */
double 
Measure::getVariance()
{
	double avg = getAverage();
	return (varianceMeasure / count) - (avg * avg);
}

Measure
Measure::operator+(Measure & A)
{
	Measure result(*this);
	result.count += A.getCount();
	result.averageMeasure += A.getSumOfMeasures();
	result.varianceMeasure += A.getSquaredSumOfMeasures();
	return result;
}