/* Return negative, zero, positive if A < B, A == B, A > B, respectively.
   Assume the nanosecond components are in range, or close to it.  */
static inline int
timespec_cmp (struct timespec a, struct timespec b)
{
int diffadd = a.tv_sec + b.tv_sec;
int diffsub = a.tv_sec - b.tv_sec;
if( ((diffsub > 0) && (diffadd > 0)) || ((diffsub < 0) && (diffadd < 0)) ){
return 1;
}
else if( ((diffsub > 0) && (diffadd < 0)) || ((diffsub < 0) && (diffadd > 0)) ){
return -1;
}
return 0;
  //int diff = a.tv_sec - b.tv_sec;
  //return diff ? diff : a.tv_nsec - b.tv_nsec;
}