1  f (unsigned short Z[48])
       2  {
       3    int j;
       4    unsigned short t1, t2, t3, T[48];
       5    unsigned short *p = T + 48;
       6  
       7    for (j = 1; j < 8; j++)
       8      {
       9        t1 = *Z++;
      10        *--p = *Z++;
      11        *--p = t1;
      12        t1 = inv(*Z++);
      13        t2 = -*Z++;
      14        t3 = -*Z++;
      15        *--p = inv(*Z++);
      16        *--p = t2;
      17        *--p = t3;
      18        *--p = t1;
      19      }
      20  }