Function delta

zdump.c:733–739

}

static intmax_t
delta(struct tm *newp, struct tm *oldp)
{
  return (newp->tm_year < oldp->tm_year
	  ? -delta_nonneg(oldp, newp)
	  : delta_nonneg(newp, oldp));
}

#ifndef TM_GMTOFF
/* Return A->tm_yday, adjusted to compare it fairly to B->tm_yday.