void propagateMagneticFieldSimple(fsgrids::perbspan perb, fsgrids::perbspan perbdt2, fsgrids::bgbspan bgb, fsgrids::efieldspan e, fsgrids::efieldspan edt2, fsgrids::technicalspan technical, FieldSolverGrid &fsgrid, SysBoundary &sysBoundaries, creal &dt, cint &RKCase)
High-level magnetic field propagation function.