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/xnu-8020.121.3/tests/benchmark/
H A Dhelpers.c49 uint64_t nsec_elapsed; in timespec_difference_us() local
52 nsec_elapsed = kNumNanosecondsInSecond - (uint64_t) (b->tv_nsec - a->tv_nsec); in timespec_difference_us()
54 nsec_elapsed = (uint64_t) (a->tv_nsec - b->tv_nsec); in timespec_difference_us()
56 …return (uint64_t) seconds_elapsed * kNumMicrosecondsInSecond + nsec_elapsed / kNumNanosecondsInMic… in timespec_difference_us()