userapps/opensource/net-snmp/perl/SNMP/perlsnmp.h

   1 #ifndef timeradd
   2 #define timeradd(a, b, result)                                                \
   3   do {                                                                        \
   4     (result)->tv_sec = (a)->tv_sec + (b)->tv_sec;                             \
   5     (result)->tv_usec = (a)->tv_usec + (b)->tv_usec;                          \
   6     if ((result)->tv_usec >= 1000000)                                         \
   7       {                                                                       \
   8         ++(result)->tv_sec;                                                   \
   9         (result)->tv_usec -= 1000000;                                         \
  10       }                                                                       \
  11   } while (0)
  12 #endif
  13
  14 #ifndef timersub
  15 #define timersub(a, b, result)                                                \
  16   do {                                                                        \
  17     (result)->tv_sec = (a)->tv_sec - (b)->tv_sec;                             \
  18     (result)->tv_usec = (a)->tv_usec - (b)->tv_usec;                          \
  19     if ((result)->tv_usec < 0) {                                              \
  20       --(result)->tv_sec;                                                     \
  21       (result)->tv_usec += 1000000;                                           \
  22     }                                                                         \
  23   } while (0)
  24 #endif