BCTF1LogPrior.h

#ifndef __BCFORMULALOGPRIOR__H
#define __BCFORMULALOGPRIOR__H

/*
 * Copyright (C) 2007-2018, the BAT core developer team
 * All rights reserved.
 *
 * For the licensing terms see doc/COPYING.
 * For documentation see http://mpp.mpg.de/bat
 */

// ---------------------------------------------------------

#include "BCPrior.h"

#include <limits>

#include <TF1.h>

// ---------------------------------------------------------

class BCTF1LogPrior : public BCPrior
{
public:
    BCTF1LogPrior(TF1& f);

    BCTF1LogPrior(const std::string& formula, double xmin, double xmax);

    virtual ~BCTF1LogPrior();

    virtual BCPrior* Clone() const
    { return new BCTF1LogPrior(*this); }

    virtual bool IsValid() const
    { return true; }

    virtual void SetFunctionRange(double xmin, double xmax);

    virtual double GetLogPrior(double x)
    { return fLogPriorFunction.Eval(x); }

    virtual double GetMode(double xmin = -std::numeric_limits<double>::infinity(), double xmax = std::numeric_limits<double>::infinity());

    TF1& GetLogFunction()
    { return fLogPriorFunction; }

    const TF1& GetLogFunction() const
    { return fLogPriorFunction; }

protected:
    TF1 fLogPriorFunction;
};

#endif