1typedef struct str { short x, y;} S;
2
3static short
4bar (short ch, short sl, short sr, short tl, short tr)
5{
6  return 0;
7}
8
9void
10foo (short ch, S *pi, short nc, S *po)
11{
12  short clo, chi, lo, hi;
13
14  po->x = bar (ch, clo, chi, pi[lo].x, pi[hi].x);
15  po->y = bar (ch, clo, chi, pi[lo].y, pi[hi].y);
16}
17