deal.II Newsletter #178

[Rene Gassmoeller]

Hello everyone!

This is deal.II newsletter #178.
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:

#12663: Add MGCoarseGridApplyPreconditioner (proposed by peterrum)
#12662: Minor doc update. (proposed by bangerth; merged)
#12661: Update documentation of FE_Q constructor. (proposed by bangerth)
#12659: Document exception behavior. (proposed by bangerth)
#12658: Make it an issue template. (proposed by drwells; merged)
#12657: Use std::size_t for index types. (proposed by bangerth; merged)
#12656: Change post- to pre-increment in for-loops, as per our usual style. (proposed by bangerth; merged)
#12655: Improve error message. (proposed by bangerth; merged)
#12654: Add a pull request template. (proposed by drwells; merged)
#12652: Fix two small documentation issues. (proposed by drwells; merged)
#12651: Extend ScratchData to return jumps and averages of FE functions on an interface (proposed by jppelteret)
#12650: Fix clang-format version to 11.1 in coding guidelines (proposed by konsim83; merged)
#12649: Remove documentation of the old Simplex namespace. (proposed by drwells; merged)
#12648: Add comments to wedge and pyramid FEs regarding degree (proposed by peterrum; merged)
#12647: Extend FESystem for more than a unique face (proposed by peterrum)
#12645: add Assert to MGTransfer* (proposed by tjhei; merged)
#12644: Categorise functions in FEInterfaceValuesViews (proposed by jppelteret; merged)
#12643: Changelog: FEInterfaceValues for AD (proposed by zjiaqi2018; merged)
#12642: Replace some post-increments by pre-increments in fe_evaluation.h (proposed by peterrum; merged)
#12641: Add assert to DataOut to force users to use block vectors for non-contiguous indexsets (proposed by peterrum; merged)
#12639: Replace AssertDimension (proposed by gfcas; merged)
#12638: Integrate difference (proposed by gfcas; merged)
#12636: step-40 disable timer summary output (proposed by gfcas; merged)
#12622: Add another example to the ScalarFunctionFromFunctionObject documentation. (proposed by bangerth; merged)
#12612: Make MassOperator's diagonals true diagonals, not lumped ones. (proposed by drwells; merged)
#12603: FEInterfaceValues for AD (proposed by zjiaqi2018; merged)
#12596: Load: align dealii and p4est meshes before repartitioning. (proposed by marcfehling; merged)
#12587: Be more explicit about types and taking addresses. (proposed by bangerth; merged)
#12016: Improve conformity tests of 2D vector elements (proposed by konsim83; merged)

And this is a list of recently opened or closed discussions:

#12660 Don't use ghosted vectors in `MatrixFreeOperators::get_matrix_diagonal()` et al (opened)
#12653 Timoshenko beam elements (opened and closed)
#12646 FESystem: wedge and pyramid support (opened and closed)
#12640 DataOut_DofData::add_data_vector() asserts after DoF renumbering on multiple processes (opened)
#12604 Negative diagonal entries with MassOperator + TET10 (closed)

A list of all major changes since the last release can be found at this website.

Thanks for being part of the community!

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Additional information can be found at our official website.