localNorm2(const ILattice<T,N>& s1)
localNorm2(const IScalar<T>& s1)
localNorm2(const ILattice<T,N>& s1){  typename UnaryReturn<ILattice<T,N>, FnLocalNorm2>::Type_t  d;  for(int i=0; i < N; ++i)    d.elem(i) = localNorm2(s1.elem(i));  return d;}