energy.h

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/* This file is part of Cloudy and is copyright (C)1978-2022 by Gary J. Ferland and
 * others.  For conditions of distribution and use see copyright notice in license.txt */

#ifndef ENERGY_H_
#define ENERGY_H_

#include "physconst.h"

class Energy
{
        double m_energy;
public:
        // CONSTRUCTORS
        Energy () : m_energy(0.0) {}
        Energy (double energy) : m_energy(energy) {}
        Energy (double energy, const char *unit) : m_energy(0.0)
        {
                set(energy, unit);
        }
        // OPERATORS
        bool operator< (const Energy& e) const
        {
                return ( m_energy < e.m_energy );
        }
        // MUTATORS
        void set(double energy)
        {
                m_energy = energy;
        }
        void set(double energy, const char *unit);
        // ACCESSORS
        double get(const char * unit) const;
        double Ryd() const
        {
                return m_energy;
        }
        double K() const
        {
                return m_energy*TE1RYD;
        }
        double Erg() const
        {
                return m_energy*EN1RYD;
        }
        double WN() const
        {
                return m_energy*RYD_INF;
        }
        double eV() const
        {
                return m_energy*EVRYD;
        }
        double keV() const
        {
                return 1e-3*eV();
        }
        double MeV() const
        {
                return 1e-6*eV();
        }
        double Hz() const
        {
                return m_energy*FR1RYD;
        }
        double kHz() const
        {
                return Hz()*1e-3;
        }
        double MHz() const
        {
                return Hz()*1e-6;
        }
        double GHz() const
        {
                return Hz()*1e-9;
        }
        double Angstrom() const
        {
                return RYDLAM/m_energy;
        }
        double nm() const
        {
                return Angstrom()*1e-1;
        }
        double micron() const
        {
                return Angstrom()*1e-4;
        }
        double mm() const
        {
                return Angstrom()*1e-7;
        }
        double cm() const
        {
                return Angstrom()*1e-8;
        }
};

//
//
class EnergyEntry : public Energy
{
        long p_ip;
        void p_set_ip();
public:
        EnergyEntry() : Energy(0.)
        {
                p_ip = -1;
        }
        EnergyEntry(double energy) : Energy(energy)
        {
                p_ip = -1;
        }
        EnergyEntry(double energy, const char *unit) : Energy(energy,unit)
        {
                p_ip = -1;
        }
        void set(double energy, const char *unit)
        {
                Energy::set(energy,unit);
                p_set_ip();
        }
        void set(double energy)
        {
                Energy::set(energy);
                p_set_ip();
        }
        // pointer on C scale
        long ip_C()
        {
                // doing it this way assures that we can create an EnergyEntry before
                // the mesh is set up; ipoint() will check that mesh is actually set up
                if( p_ip < 0 )
                        p_set_ip();
                return p_ip;
        }
        // pointer on fortran scale
        long ip_fortran()
        {
                return ip_C() + 1;
        }
};

const char *StandardEnergyUnit(const char *);

bool lgConserveEnergy( void );

#endif /* ENERGY_H_ */