1  extern void abort(void);
       2  
       3  int test1(char x)
       4  {
       5    return x/100 == 3;
       6  }
       7  
       8  int test1u(unsigned char x)
       9  {
      10    return x/100 == 3;
      11  }
      12  
      13  int test2(char x)
      14  {
      15    return x/100 != 3;
      16  }
      17  
      18  int test2u(unsigned char x)
      19  {
      20    return x/100 != 3;
      21  }
      22  
      23  int test3(char x)
      24  {
      25    return x/100 < 3;
      26  }
      27  
      28  int test3u(unsigned char x)
      29  {
      30    return x/100 < 3;
      31  }
      32  
      33  int test4(char x)
      34  {
      35    return x/100 <= 3;
      36  }
      37  
      38  int test4u(unsigned char x)
      39  {
      40    return x/100 <= 3;
      41  }
      42  
      43  int test5(char x)
      44  {
      45    return x/100 > 3;
      46  }
      47  
      48  int test5u(unsigned char x)
      49  {
      50    return x/100 > 3;
      51  }
      52  
      53  int test6(char x)
      54  {
      55    return x/100 >= 3;
      56  }
      57  
      58  int test6u(unsigned char x)
      59  {
      60    return x/100 >= 3;
      61  }
      62  
      63  
      64  int main()
      65  {
      66    int c;
      67  
      68    for (c=-128; c<256; c++)
      69    {
      70      if (test1(c) != 0)
      71        abort ();
      72      if (test1u(c) != 0)
      73        abort ();
      74      if (test2(c) != 1)
      75        abort ();
      76      if (test2u(c) != 1)
      77        abort ();
      78      if (test3(c) != 1)
      79        abort ();
      80      if (test3u(c) != 1)
      81        abort ();
      82      if (test4(c) != 1)
      83        abort ();
      84      if (test4u(c) != 1)
      85        abort ();
      86      if (test5(c) != 0)
      87        abort ();
      88      if (test5u(c) != 0)
      89        abort ();
      90      if (test6(c) != 0)
      91        abort ();
      92      if (test6u(c) != 0)
      93        abort ();
      94    }
      95    return 0;
      96  }
      97