#ifndef CONSTANT_H
#define CONSTANT_H

#define  BUFSIZE  512

/*
 * conversion factor for energy
 *
 * internal energy units are derived:  (AMU * A^2 / fs^2)
 * multiply to convert from (Kcal / mol) to internal units
 */
#define  INV_KCAL_PER_MOL   0.0004184

/*
 * convert energy units back to expected (Kcal / mol)
 */
#define  KCAL_PER_MOL   (1.0 / INV_KCAL_PER_MOL)

/*
 * Coulomb constant converted for use with internal energy units
 */
#define  COULOMB   (332.0636 * INV_KCAL_PER_MOL)


#endif /* CONSTANT_H */