text: /*************************************************************************\
  *                  Copyright (C) Michael Kerrisk, 2014.                   *
  *                                                                         *
  * This program is free software. You may use, modify, and redistribute it *
  * under the terms of the GNU Affero General Public License as published   *
  * by the Free Software Foundation, either version 3 or (at your option)   *
  * any later version. This program is distributed without any warranty.    *
  * See the file COPYING.agpl-v3 for details.                               *
  \*************************************************************************/
  
  int
  vis_f1(int k)
  {
      int vis_comm(int j);
  
      return vis_comm(k) / 2;
  }
  