unit_conversion.h

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/*
** unit_conversion.h
** 
** Made by Johnny Q. Hacker
** Login   <solarion@borkborkbork>
** 
    Copyright (C) 2009 Joseph Pingenot

    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU Affero General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU Affero General Public License for more details.

    You should have received a copy of the GNU Affero General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.

** Started on  Thu Nov 19 22:50:56 2009 Johnny Q. Hacker
** Last update Thu Nov 19 22:50:56 2009 Johnny Q. Hacker
*/

#include "gcc_hints.h"

#ifndef     UNIT_CONVERSION_H_
# define    UNIT_CONVERSION_H_

/*Magnitude of charge of one electron in C*/
extern const double mag_q_e_in_C;
/*Energy of one eV in Hartree*/
extern const double ev_in_hartree;
/*Energy of one Hartree in eV*/
extern const double hartree_in_ev;

/*hbar, in eV s*/
extern const double hbar;
/*mass of electron in eV*/
extern const double m0;
/*Charge of the elecron in C*/
extern const double q_e;
/*Magnitude of the charge of the electron in C*/
extern const double e;
/*Speed of light in m/s*/
extern const double c;
/*vacuum dielectric constant F/m*/
extern const double epsilon0;
/*one over epsilon0*/
extern const double oo_epsilon0;


___const double ev_to_hartree(double ev);
___const double hartree_to_ev(double hartree);
___const double bohr_to_m(double bohr);
___const double m_to_bohr(double m);
___const double bohr_to_nm(double bohr);
___const double nm_to_bohr(double nm);

#endif      /* !UNIT_CONVERSION_H_ */