Hello everyone! This is deal.II newsletter #308. It automatically reports recently merged features and discussions about the deal.II finite element library.
## Below you find a list of recently proposed or merged features: #18091: Be more precise what we need to #include. (proposed by bangerth) https://github.com/dealii/dealii/pull/18091 #18090: Mark our various constants as 'constexpr'. (proposed by bangerth) https://github.com/dealii/dealii/pull/18090 #18089: Exclude files from compiling if they are functionally empty. (proposed by bangerth) https://github.com/dealii/dealii/pull/18089 #18088: Add checks that src is not equal to dst in mmult(). (proposed by WasimNiyazMunshi) https://github.com/dealii/dealii/pull/18088 #18087: Tighten up the paths in which include files are found. (proposed by bangerth) https://github.com/dealii/dealii/pull/18087 #18086: Detect header cycles regardless of how we spell the #include. (proposed by bangerth) https://github.com/dealii/dealii/pull/18086 #18085: Remove the last header cycle. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/18085 #18084: Avoid another include cycle. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/18084 #18083: Remove a cycle in header files. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/18083 #18082: Do not include unnecessary header file. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/18082 #18081: Add basic periodicity for tetrahedra with a mesh generator and a test. (proposed by KJSchwiebert) https://github.com/dealii/dealii/pull/18081 #18079: Normalize the way we write header includes. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/18079 #18078: Don't use .inst files where not necessary. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/18078 #18076: CMake: rearrange source/CMakeLists.txt (proposed by tamiko) https://github.com/dealii/dealii/pull/18076 #18075: Remove #includes from config.h. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/18075 #18074: docker: disable focal image. (proposed by marcfehling) https://github.com/dealii/dealii/pull/18074 #18073: Fix "declaration of '' hides class member" warning (proposed by Friteee; merged) https://github.com/dealii/dealii/pull/18073 #18072: Fix "declaration of '' hides class member" warning (proposed by Friteee) https://github.com/dealii/dealii/pull/18072 #18070: Don't call deprecated QProjector functions. (proposed by drwells; merged) https://github.com/dealii/dealii/pull/18070 #18069: Get rid of another call to `face_orientation()`. (proposed by drwells; merged) https://github.com/dealii/dealii/pull/18069 #18068: Fix `extract_boundary_mesh()` for simplex meshes (proposed by QY-Shi) https://github.com/dealii/dealii/pull/18068 #18067: Normalize the way we include header files. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/18067 #18065: Fix step_operations() for MemorySpace::Default (proposed by peterrum; merged) https://github.com/dealii/dealii/pull/18065 #18064: CMake: Move some code from source/ to cmake/config/. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/18064 #18063: Update step-90.cc (proposed by ZhouleiJoeStone) https://github.com/dealii/dealii/pull/18063 #18062: Always initialize a variable in AlignedVector. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/18062 #18061: Include ghost cell in Matrix-Free data (proposed by mwichro; merged) https://github.com/dealii/dealii/pull/18061 #18060: MatrixFree: Update test output in 1D face setup (proposed by kronbichler; merged) https://github.com/dealii/dealii/pull/18060 #18059: Move functions from .cc to .templates.h (proposed by peterrum; merged) https://github.com/dealii/dealii/pull/18059 #18058: Update a comment in step-38. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/18058 #18057: Where possible, replace '#ifdef DEBUG' by 'if constexpr(...debug mode...'). (proposed by bangerth) https://github.com/dealii/dealii/pull/18057 #18056: Fix '#if DEBUG' statements. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/18056 #18055: Avoid several more uses of GeometryInfo. (proposed by bangerth; merged) https://github.com/dealii/dealii/pull/18055 #18054: Update step-90.cc with fe_degree=2 and level_set_fe_degree=2 (proposed by ZhouleiJoeStone) https://github.com/dealii/dealii/pull/18054 #18053: Reference readme when step-XX.diff is missing. (proposed by marcfehling; merged) https://github.com/dealii/dealii/pull/18053 #18047: Update linux debug cuda-11 CI to use Ubuntu 22.04 (proposed by masterleinad; merged) https://github.com/dealii/dealii/pull/18047 #18038: Avoid old orientation functions 2 (proposed by drwells; merged) https://github.com/dealii/dealii/pull/18038 #17926: Update face_setup_internal.h to allow for 1D adaptive meshes (proposed by seanjohn11; merged) https://github.com/dealii/dealii/pull/17926 #17365: CMake: update boost configuration, fix boost policy warning (proposed by tamiko; merged) https://github.com/dealii/dealii/pull/17365 ## And this is a list of recently opened or closed discussions: #18080: Fix more header include cycles. (opened and closed) https://github.com/dealii/dealii/issues/18080 #18077: Bug in MGTools::extract_inner_interface_dofs(). (opened) https://github.com/dealii/dealii/issues/18077 #18071: Implement C++20 modules. (opened) https://github.com/dealii/dealii/issues/18071 #18066: `GridGenerator::extract_boundary_mesh() Fails for Simplex Meshes` (opened) https://github.com/dealii/dealii/issues/18066 #18011: FETools::interpolate with PETScWrappers::MPI::Vector error (closed) https://github.com/dealii/dealii/issues/18011 #17766: CMake: support multiple generator setup (at least in user projects) (closed) https://github.com/dealii/dealii/issues/17766 #5525: CMake: Implement macro to copy a file to some/all compiled test directories for one component (closed) https://github.com/dealii/dealii/issues/5525 A list of all major changes since the last release can be found at https://www.dealii.org/developer/doxygen/deal.II/recent_changes.html. Thanks for being part of the community! Let us know about questions, problems, bugs or just share your experience by writing to [email protected], or by opening issues or pull requests at https://www.github.com/dealii/dealii. 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