gcc/testsuite/gm2/iso/run/pass/shift.mod

   1 (* Copyright (C) 2003, 2004, 2005, 2006 Free Software Foundation, Inc. *)
   2 (* This file is part of GNU Modula-2.
   3
   4 GNU Modula-2 is free software; you can redistribute it and/or modify it under
   5 the terms of the GNU General Public License as published by the Free
   6 Software Foundation; either version 2, or (at your option) any later
   7 version.
   8
   9 GNU Modula-2 is distributed in the hope that it will be useful, but WITHOUT ANY
  10 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12 for more details.
  13
  14 You should have received a copy of the GNU General Public License along
  15 with gm2; see the file COPYING.  If not, write to the Free Software
  16 Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. *)
  17
  18 MODULE shift ;
  19
  20 FROM libc IMPORT exit ;
  21 FROM SYSTEM IMPORT SHIFT ;
  22
  23 VAR
  24    b: BITSET ;
  25    i: INTEGER ;
  26 BEGIN
  27    b := BITSET{1, 2, 3} ;
  28    b := SHIFT(b, 1) ;
  29    IF b#BITSET{2, 3, 4}
  30    THEN
  31       exit(1)
  32    END ;
  33    b := BITSET{1, 2, 3} ;
  34    b := SHIFT(b, -1) ;
  35    IF b#BITSET{0, 1, 2}
  36    THEN
  37       exit(2)
  38    END ;
  39    i := -1 ;
  40    b := BITSET{1, 2, 3} ;
  41    b := SHIFT(b, i) ;
  42    IF b#BITSET{0, 1, 2}
  43    THEN
  44       exit(3)
  45    END
  46 END shift.