1  /*
       2   * usleep - round microseconds up to an integral number of seconds.
       3   *
       4   * The real usleep() doesn't work this way; this is a hack for systems
       5   * that don't have usleep().
       6   */
       7  
       8  int
       9  usleep(unsigned int usec)
      10  {
      11  	unsigned int seconds = usec / 1000000;
      12  
      13  	/* Round up: */
      14  	seconds += (usec % 1000000 > 0);	/* 1 or 0 */
      15  
      16  	return sleep(seconds);
      17  }