23 void pdeltat(struct timeval *t1, struct timeval *t0);
24 void tvadd(struct timeval *tsum, struct timeval *t0);
25 void tvsub(struct timeval *tdiff, struct timeval *t1, struct timeval *t0);
222 pdeltat(struct timeval *t1, struct timeval *t0)  in pdeltat()  argument
229 	tvsub(&td, t1, t0);  in pdeltat()
235 tvadd(struct timeval *tsum, struct timeval *t0)  in tvadd()  argument
241 	tsum->tv_sec += t0->tv_sec;  in tvadd()
242 	tsum->tv_usec += t0->tv_usec;  in tvadd()
250 tvsub(struct timeval *tdiff, struct timeval *t1, struct timeval *t0)  in tvsub()  argument
256 	tdiff->tv_sec = t1->tv_sec - t0->tv_sec;  in tvsub()
257 	tdiff->tv_usec = t1->tv_usec - t0->tv_usec;  in tvsub()