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- void timespec_minus(struct timespec * tv_a, const struct timespec * tv_b) {
- tv_a->tv_sec -= tv_b->tv_sec;
- tv_a->tv_nsec -= tv_b->tv_nsec;
- if (tv_a->tv_nsec < 0) {
- tv_a->tv_sec -= 1;
- tv_a->tv_nsec += 1000 * 1000 * 1000;
- }
- }
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