1a (c)
2     unsigned char c;
3{
4  unsigned u = c;
5  if ((int)u < 0)
6    return 1;
7  else
8    return 0;
9}
10
11b (x, y)
12     unsigned x, y;
13{
14  x /= y;
15  if ((int)x < 0)
16    return 1;
17  else
18    return 0;
19}
20