int thermal_init(t_atom *atom,t_random *random,int count,double t);
int scale_velocity(t_atom *atom,int count,double t);
double get_e_kin(t_atom *atom,int count);
int thermal_init(t_atom *atom,t_random *random,int count,double t);
int scale_velocity(t_atom *atom,int count,double t);
double get_e_kin(t_atom *atom,int count);