Nils O. Selåsdal
56 lines
1.0 KiB
C
56 lines
1.0 KiB
C
#include <sys/time.h>
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struct timeval *
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uc_tvadd(struct timeval *dst, const struct timeval *a, const struct timeval *b)
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{
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dst->tv_sec = a->tv_sec + b->tv_sec;
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dst->tv_usec = a->tv_usec + b->tv_usec;
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if (dst->tv_usec >= 1000000) {
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dst->tv_sec++;
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dst->tv_usec -= 1000000;
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}
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return dst;
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}
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struct timeval *
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uc_tvsub(struct timeval *dst, const struct timeval *a, const struct timeval *b)
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{
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dst->tv_sec = a->tv_sec - b->tv_sec;
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dst->tv_usec = a->tv_usec - b->tv_usec;
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if (dst->tv_usec < 0) {
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dst->tv_sec--;
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dst->tv_usec += 1000000;
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}
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return dst;
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}
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int
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uc_tvcmp(const struct timeval *a, const struct timeval *b)
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{
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if (a->tv_sec < b->tv_sec)
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return -1;
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else if (a->tv_sec > b->tv_sec)
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return 1;
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if (a->tv_usec < b->tv_usec)
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return -1;
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else if (a->tv_usec > b->tv_usec)
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return 1;
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return 0;
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}
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struct timeval *
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uc_ms2tv(struct timeval *dst, unsigned long long ms)
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{
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dst->tv_sec = ms / 1000;
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dst->tv_usec = ms % 1000 * 1000;
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return dst;
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}
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