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ParameterRandomizer.cpp

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// ParameterRandomizer.cpp: implementation of the CParameterRandomizer class.
//

#include "ParameterRandomizer.h"

// Construction/Destruction

CParameterRandomizer::CParameterRandomizer(int seed)
{
        m_iSeed = seed;
        m_pRNG = new Rand(seed);
}

CParameterRandomizer::~CParameterRandomizer()
{
        delete m_pRNG;
}

void CParameterRandomizer::Randomize(double *parameters, int nParameters, double fraction, int nIterations)
{
        if(fraction > 1.0)
        {
                fraction = 1.0;
        }
        if(fraction < 0.0)
        {
                fraction = 0.0;
        }

        for(int iCount = 0; iCount < nIterations; iCount++)
        {
                for(int i = 0; i < nParameters; i++)
                {
                        parameters[i] += (-1 + 2*(m_pRNG->uniform()))*fraction*parameters[i];
                }
        }
}

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