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(* Copyright (C) 2003, 2004, 2005, 2006 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 shift ;
FROM libc IMPORT exit ;
FROM SYSTEM IMPORT SHIFT ;
VAR
b: BITSET ;
i: INTEGER ;
BEGIN
b := BITSET{1, 2, 3} ;
b := SHIFT(b, 1) ;
IF b#BITSET{2, 3, 4}
THEN
exit(1)
END ;
b := BITSET{1, 2, 3} ;
b := SHIFT(b, -1) ;
IF b#BITSET{0, 1, 2}
THEN
exit(2)
END ;
i := -1 ;
b := BITSET{1, 2, 3} ;
b := SHIFT(b, i) ;
IF b#BITSET{0, 1, 2}
THEN
exit(3)
END
END shift.
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