3 #include <assert.h>
33     assert(r == 0);  in main()
34     assert(c == 0);  in main()
37     assert(r == 0);  in main()
38     assert(c == 0);  in main()
41     assert(r == 0);  in main()
42     assert(c == 0);  in main()
45     assert(r == 1);  in main()
46     assert(c == 0);  in main()
49     assert(r == 1);  in main()
50     assert(c == 0);  in main()
53     assert(r == -2);  in main()
54     assert(c == 1);  in main()
57     assert(r == 0xfffffffe);  in main()
58     assert(c == 1);  in main()
61     assert(r == -1);  in main()
62     assert(c == 1);  in main()
65     assert(r == 0xffffffff);  in main()
66     assert(c == 1);  in main()