And of course there is C++ libraries to do the same. For example the blitz++ lib...

petschge on Jan 20, 2021 | parent | context | favorite | on: Again on 0-based vs. 1-based indexing

And of course there is C++ libraries to do the same. For example the blitz++ library. Negative indices to the left of element[0] are great for ghost zones in codes that do domain decomposition over different MPI ranks.