int moldyn_shutdown(t_moldyn *moldyn);
int create_lattice(unsigned char type,int element,double mass,double lc,
int a,int b,int c,t_atom **atom);
int destroy_lattice(t_atom *atom);
int moldyn_shutdown(t_moldyn *moldyn);
int create_lattice(unsigned char type,int element,double mass,double lc,
int a,int b,int c,t_atom **atom);
int destroy_lattice(t_atom *atom);