(* Copyright (C) 2009 Free Software Foundation, Inc. *)
(* 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 2, 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 gm2; see the file COPYING.  If not, write to the Free
Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301, USA. *)

MODULE arith7 ;

FROM libc IMPORT exit ;

PROCEDURE Assert (b: BOOLEAN) ;
BEGIN
   INC(c) ;
   IF NOT b
   THEN
      exit(c)
   END
END Assert ;


CONST
   one = CMPLX(1.0, 0.0) ;

VAR
   z: COMPLEX ;
   c: CARDINAL ;
BEGIN
   c := 0 ;
   z := CMPLX (0.0, -1.0) ;
   Assert(z*z=-CMPLX(1.0, 0.0)) ;
   Assert(z*z=-one)
END arith7.