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CDFTable.cpp

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 * This file is part of openWNS (open Wireless Network Simulator)
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 *
 * Copyright (C) 2004-2007
 * Chair of Communication Networks (ComNets)
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 * fax: ++49-241-80-22242
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 * openWNS is free software; you can redistribute it and/or modify it under the
 * terms of the GNU Lesser General Public License version 2 as published by the
 * Free Software Foundation;
 *
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 * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
 * A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more
 * details.
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 * You should have received a copy of the GNU Lesser General Public License
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#include <WNS/distribution/CDFTable.hpp>
#include <WNS/module/Base.hpp>
#include <WNS/Interval.hpp>
#include <WNS/container/RangeMap.hpp>

using namespace wns::distribution;

STATIC_FACTORY_REGISTER_WITH_CREATOR(CDFTable, Distribution, "CDFTable", wns::PyConfigViewCreator);
STATIC_FACTORY_REGISTER_WITH_CREATOR(CDFTable, Distribution, "CDFTable", wns::distribution::RNGConfigCreator);

typedef wns::Interval<double> CDFRange;

CDFTable::CDFTable(const pyconfig::View& config) :
    Distribution(),
    dis_(getRNG()),
    mean_(0.0)
{
    int tableLen = config.len("cdfTable");
    assure(tableLen>0, "empty cdfTable");
    double lastCdfValue=0.0;
    for (int ii=0; ii<tableLen; ++ii)
    {
        std::stringstream index;
        index << ii;
        std::string subviewName = "cdfTable" + std::string("[") + index.str() + std::string("]");
        double rnValue = config.get<double>(subviewName, 0);
        double cdfValue = config.get<double>(subviewName,1);
        mean_ += rnValue * (cdfValue - lastCdfValue);
        CDFRange cdfInterval = CDFRange::FromExcluding(lastCdfValue).ToIncluding(cdfValue);
        rangeMap_.insert(cdfInterval, rnValue);
        lastCdfValue = cdfValue;
    }
}

CDFTable::CDFTable(wns::rng::RNGen* rng, const pyconfig::View& config) :
    Distribution(rng),
    dis_(getRNG()),
    mean_(0.0)
{
    int tableLen = config.len("cdfTable");
    assure(tableLen>0, "empty cdfTable");
    double lastCdfValue=0.0;
    for (int ii=0; ii<tableLen; ++ii)
    {
        std::stringstream index;
        index << ii;
        std::string subviewName = "cdfTable" + std::string("[") + index.str() + std::string("]");
        double rnValue = config.get<double>(subviewName, 0);
        double cdfValue = config.get<double>(subviewName,1);
        mean_ += rnValue * (cdfValue - lastCdfValue);
        CDFRange cdfInterval = CDFRange::FromExcluding(lastCdfValue).ToIncluding(cdfValue);
        rangeMap_.insert(cdfInterval, rnValue);
        lastCdfValue = cdfValue;
    }
}

CDFTable::~CDFTable()
{
}

double
CDFTable::operator()()
{
    return rangeMap_.get(dis_());
}

double
CDFTable::getMean() const
{
    return mean_;
}

std::string
CDFTable::paramString() const
{
    std::ostringstream tmp;
    tmp << "CDFTable()";
    return tmp.str();
}

/*
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*/

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