l2cn
l2cn(d0,d1,out,n);
l2cn(d0,d1,out,n);
l2cn(d0,d1,out,n);
l2cn(d0,d1,out,n);
l2cn(tout0,tout1,out,l+8);
l2cn(tout0,tout1,out,l+8);
l2cn(tout0,tout1,out,l+8);
l2cn(tout0,tout1,out,l+8);