1  int v;
       2  
       3  f ()
       4  {
       5    unsigned long *a1, *a2;
       6    int vertex2;
       7    int c, x1, x2, dx1, dx2, dy1, dy2, e1, e2, s2;
       8    unsigned long m, b;
       9    int n;
      10    unsigned long r;
      11    int aba;
      12  
      13    do
      14      {
      15        if (dx2 >= dy2)
      16  	dx2 = dx2 % dy2;
      17  
      18        if (dx2 >= dy2)
      19  	{
      20  	  s2 = - (dx2 / dy2);
      21  	  dx2 = dx2 % dy2;
      22  	}
      23      }
      24    while (vertex2 / 65536);
      25  
      26    for (;;)
      27      {
      28        c = x2;
      29        a2 = a1;
      30        if (v)
      31  	a2 = 0;
      32  
      33        if (c + n)
      34  	{
      35  	  m = b << (c * 8);
      36  	  *a2 = (*a2 & ~m) | (r & m);
      37  	  n += c;
      38  
      39  	  while (--n)
      40  	    {
      41  	      {
      42  	      }
      43  	    }
      44  	}
      45  
      46        a1 = 0;
      47        x1 += 0;
      48        if (e1 += dx1)
      49  	e1 -= dy1;
      50        x2 += s2;
      51        if (e2 += dx2)
      52  	e2 -= dy2;
      53      }
      54  }