typedef struct s_tersoff_mult_params {
double S[2]; /* tersoff cutoff radii */
double S2[2]; /* tersoff cutoff radii squared */
typedef struct s_tersoff_mult_params {
double S[2]; /* tersoff cutoff radii */
double S2[2]; /* tersoff cutoff radii squared */
#define KILOGRAM (1.0/AMU) /* amu */
#define NEWTON (METER*KILOGRAM/(SECOND*SECOND)) /* A amu / fs^2 */
#define PASCAL (NEWTON/(METER*METER)) /* N / A^2 */
#define KILOGRAM (1.0/AMU) /* amu */
#define NEWTON (METER*KILOGRAM/(SECOND*SECOND)) /* A amu / fs^2 */
#define PASCAL (NEWTON/(METER*METER)) /* N / A^2 */