Nicolas Tancogne-Dejean requested to merge singularity into develop Jan 21, 2020

Description

Implementation of the Coulomb singularity for the Coulomb integrals in solids.

News snippet

Implementation of the Coulomb singularity for the Coulomb integrals in solids.

Checklist

I have checked that my code follows the Octopus coding standards
I have added tests for all the new features added in this request.