BCTF1Prior.h

#ifndef __BCTF1PRIOR__H
#define __BCTF1PRIOR__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 BCTF1Prior : public BCPrior
{
public:
    BCTF1Prior(TF1& f);

    BCTF1Prior(const std::string& formula, double xmin, double xmax);

    virtual ~BCTF1Prior() {};

    virtual BCPrior* Clone() const
    { return new BCTF1Prior(*this); }

    virtual bool IsValid() const
    { return true; }

    virtual double GetPrior(double x, bool normalize = false)
    { return fPriorFunction.Eval(x) * ((normalize) ? exp(-fLogIntegral) : 1); }

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

};

#endif