1  foo (a, b)
       2  {
       3    return (a & (1 << b)) != 0;
       4  }
       5  
       6  bar (a, b)
       7  {
       8    a ^= (1 << b);
       9    return a != 0;
      10  }
      11  
      12  main ()
      13  {
      14    int i;
      15    for (i = 0; i < 32; i++)
      16      printf ("%d ", foo (0x8000000f, i));
      17    puts ("");
      18  }