FILHSZ
((FILHSZ +(f)->f_opthdr +(f)->f_nscns * SCNHSZ + 7) & ~7) : \
((FILHSZ +(f)->f_opthdr +(f)->f_nscns * SCNHSZ + 15) & ~15))
fileoff = (FILHSZ +
((FILHSZ +(f)->f_opthdr +(f)->f_nscns * SCNHSZ + 7) & ~7) : \
((FILHSZ +(f)->f_opthdr +(f)->f_nscns * SCNHSZ + 15) & ~15))