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struct timeval start, end, delta; assert(gettimeofday(&start, NULL) != -1); // LAPS should be huge (about a million, probably) for (int i = 0; i < LAPS; i++) test_function(); assert(gettimeofday(&end, NULL) != -1); timersub(&end, &start, &delta); uint64_t delta_ns = (delta.tv_sec * NSEC_PER_SEC + delta.tv_usec * NSEC_PER_USEC) / LAPS;
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