found issue in current BCs design. More than one function leads to unsupported call to an unknown function (call to ijl_get_nth_field_checked)

[cmhamel]

[cmhamel]

This is only true on the GPU of course. Only tested on CUDA so far.

Might need to go to a different, yet more annoying design that iterates over bcs and hands the kernel a wrapper func. This will make warm starting really annoying though.