lib/ack/libp/wdw.c

   1 /* $Header$ */
   2 /*
   3  * (c) copyright 1983 by the Vrije Universiteit, Amsterdam, The Netherlands.
   4  *
   5  *          This product is part of the Amsterdam Compiler Kit.
   6  *
   7  * Permission to use, sell, duplicate or disclose this software must be
   8  * obtained in writing. Requests for such permissions may be sent to
   9  *
  10  *      Dr. Andrew S. Tanenbaum
  11  *      Wiskundig Seminarium
  12  *      Vrije Universiteit
  13  *      Postbox 7161
  14  *      1007 MC Amsterdam
  15  *      The Netherlands
  16  *
  17  */
  18
  19 #include        <pc_file.h>
  20
  21 extern struct file      *_curfil;
  22 extern                  _incpt();
  23
  24 char *_wdw(f) struct file *f; {
  25
  26         _curfil = f;
  27         if ((f->flags & (WINDOW|WRBIT|0377)) == MAGIC)
  28                 _incpt(f);
  29         return(f->ptr);
  30 }