(* overflow.mod test division overflow detection.

Copyright (C) 2001-2019 Free Software Foundation, Inc.
Contributed by Gaius Mulley <gaius.mulley@southwales.ac.uk>.

This file is part of GNU Modula-2.

GNU Modula-2 is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3, or (at your option)
any later version.

GNU Modula-2 is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
General Public License for more details.

You should have received a copy of the GNU General Public License
along with GNU Modula-2; see the file COPYING.  If not,
see <https://www.gnu.org/licenses/>.  *)

MODULE overflow ;

FROM libc IMPORT printf ;


PROCEDURE func (x, y: CARDINAL) ;
VAR
   res: CARDINAL ;
BEGIN
   res := x DIV y ;
   printf ("res = %ud\n", res);
END func ;

VAR
   x, y: INTEGER ;
   u   : CARDINAL ;
BEGIN
   x := 1 ;
   y := -1 ;
   u := x DIV y ;
   printf ("u = %ud\n", u);
   func (x, y)
END overflow.