/* util.c */
double                  gettime(void);
void                    d_to_tv(double, struct timeval *);
double                  lfp_to_d(struct l_fixedpt);
struct l_fixedpt        d_to_lfp(double);
double                  sfp_to_d(struct s_fixedpt);
struct s_fixedpt        d_to_sfp(double);