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C/C++ Source or Header  |  2005-01-29  |  447b  |  17 lines
  1.  
  2. #include <time.h>
  3.  
  4. #ifndef _TIMEVAL_DEFINED /* also in winsock[2].h */
  5. #define _TIMEVAL_DEFINED
  6. struct timeval {
  7.   long tv_sec;
  8.   long tv_usec;
  9. };
  10. #define timerisset(tvp)     ((tvp)->tv_sec || (tvp)->tv_usec)
  11. #define timercmp(tvp, uvp, cmp) \
  12.     (((tvp)->tv_sec != (uvp)->tv_sec) ? \
  13.     ((tvp)->tv_sec cmp (uvp)->tv_sec) : \
  14.     ((tvp)->tv_usec cmp (uvp)->tv_usec))
  15. #define timerclear(tvp)     (tvp)->tv_sec = (tvp)->tv_usec = 0
  16. #endif /* _TIMEVAL_DEFINED */
  17.