message: Implement conversion of nanoseconds to clocks in terms of CLOCKS_PER_SEC
diff: @@ -105,12 +105,12 @@ pub extern "C" fn clock() -> clock_t {
  }
  if ts.tv_sec > time_t::max_value() / CLOCKS_PER_SEC
  - || ts.tv_nsec / 1000 > time_t::max_value() - CLOCKS_PER_SEC * ts.tv_sec
  + || ts.tv_nsec / (1_000_000_000 / CLOCKS_PER_SEC) > time_t::max_value() - CLOCKS_PER_SEC * ts.tv_sec
  {
  return -1;
  }
  - return ts.tv_sec * CLOCKS_PER_SEC + ts.tv_nsec / 1000;
  + return ts.tv_sec * CLOCKS_PER_SEC + ts.tv_nsec / (1_000_000_000 / CLOCKS_PER_SEC);
  }
  #[no_mangle]
  