/usr/include/dune/functions/ is in libdune-functions-dev 2.5.1-1.
This file is owned by root:root, with mode 0o755.
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/usr/include/dune/functions/analyticfunctions/
/usr/include/dune/functions/analyticfunctions/polynomial.hh
/usr/include/dune/functions/analyticfunctions/trigonometricfunction.hh
/usr/include/dune/functions/common/
/usr/include/dune/functions/common/callable.hh
/usr/include/dune/functions/common/defaultderivativetraits.hh
/usr/include/dune/functions/common/differentiablefunction.hh
/usr/include/dune/functions/common/differentiablefunction_imp.hh
/usr/include/dune/functions/common/differentiablefunctionfromcallables.hh
/usr/include/dune/functions/common/functionconcepts.hh
/usr/include/dune/functions/common/functionfromcallable.hh
/usr/include/dune/functions/common/indexaccess.hh
/usr/include/dune/functions/common/interfaces.hh
/usr/include/dune/functions/common/localfunction.hh
/usr/include/dune/functions/common/localfunction_imp.hh
/usr/include/dune/functions/common/optional.hh
/usr/include/dune/functions/common/polymorphicsmallobject.hh
/usr/include/dune/functions/common/reserveddeque.hh
/usr/include/dune/functions/common/signature.hh
/usr/include/dune/functions/common/staticforloop.hh
/usr/include/dune/functions/common/treedata.hh
/usr/include/dune/functions/common/tuplevector.hh
/usr/include/dune/functions/common/type_traits.hh
/usr/include/dune/functions/common/typeerasure.hh
/usr/include/dune/functions/common/utility.hh
/usr/include/dune/functions/functionspacebases/
/usr/include/dune/functions/functionspacebases/basistags.hh
/usr/include/dune/functions/functionspacebases/bsplinebasis.hh
/usr/include/dune/functions/functionspacebases/compositebasis.hh
/usr/include/dune/functions/functionspacebases/concepts.hh
/usr/include/dune/functions/functionspacebases/defaultglobalbasis.hh
/usr/include/dune/functions/functionspacebases/defaultlocalindexset.hh
/usr/include/dune/functions/functionspacebases/defaultlocalview.hh
/usr/include/dune/functions/functionspacebases/defaultnodetorangemap.hh
/usr/include/dune/functions/functionspacebases/flatmultiindex.hh
/usr/include/dune/functions/functionspacebases/flatvectorbackend.hh
/usr/include/dune/functions/functionspacebases/hierarchicvectorwrapper.hh
/usr/include/dune/functions/functionspacebases/interpolate.hh
/usr/include/dune/functions/functionspacebases/lagrangebasis.hh
/usr/include/dune/functions/functionspacebases/lagrangedgbasis.hh
/usr/include/dune/functions/functionspacebases/nodes.hh
/usr/include/dune/functions/functionspacebases/powerbasis.hh
/usr/include/dune/functions/functionspacebases/pq1nodalbasis.hh
/usr/include/dune/functions/functionspacebases/pqknodalbasis.hh
/usr/include/dune/functions/functionspacebases/sizeinfo.hh
/usr/include/dune/functions/functionspacebases/subspacebasis.hh
/usr/include/dune/functions/functionspacebases/subspacelocalview.hh
/usr/include/dune/functions/functionspacebases/taylorhoodbasis.hh
/usr/include/dune/functions/gridfunctions/
/usr/include/dune/functions/gridfunctions/analyticgridviewfunction.hh
/usr/include/dune/functions/gridfunctions/discreteglobalbasisfunction.hh
/usr/include/dune/functions/gridfunctions/discretescalarglobalbasisfunction.hh
/usr/include/dune/functions/gridfunctions/gridfunction.hh
/usr/include/dune/functions/gridfunctions/gridfunction_imp.hh
/usr/include/dune/functions/gridfunctions/gridviewentityset.hh
/usr/include/dune/functions/gridfunctions/gridviewfunction.hh
/usr/include/dune/functions/gridfunctions/localderivativetraits.hh