template struct RotationalPart<sophus::RxSO3d>ΒΆ
template <> struct RotationalPart<sophus::RxSO3d> { // methods static double norm(const typename sophus::RxSO3d::Tangent& t); };
template <> struct RotationalPart<sophus::RxSO3d> { // methods static double norm(const typename sophus::RxSO3d::Tangent& t); };