Change warning for missing 1D-Ewald implementation
Description
This MR fixes the warning about the missing 1D Ewald implementation and enables and fixes the arpes test
News snippet
This MR fixes the warning about the missing 1D Ewald implementation and enables and fixes the arpes test
Checklist
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I have checked that my code follows the Octopus coding standards -
I have added tests for all the new features added in this request.
Edited by Martin Lueders