FCI and checking

[dschwoerer]

Currently checking (CHECK >= 3) because the ynext fields are shifted by the offset in y direction. The default checking however is RGN_NOBNDRY.

I am not sure what the best approach is:

• Store the valid region in the field for checkData()
• Do not shift if ynext is a different field, that way RGN_NOBNDRY is valid for all parallel slices
• Never run with debugging

First is easy, second could allow to drop the y boundaries, as they are never used (as far as I can tell)

@bshanahan any thoughts?

[bshanahan]

I guess option 1 is the best, but this is more a question for @ZedThree