Remove SparsityPatternBase.

We only have one class which inherits from this (SparsityPattern) and,
since we instantiate templates for each sparsity pattern type, it isn't
possible to do something useful by inheriting from this class.

This was split off from SparsityPattern in
5213023ca165bfbd420423551c184a3e31886223 with the intent of writing some
more general storage classes based on SparsityPatternBase, but that has
never left the proof-of-concept stage.

Remove some references to SparsityPatternBase.

Merge pull request #14305 from mschreter/add_mca_1d

GridTools::MarchingCubeAlgorithm: add 1d implementation

Merge pull request #14314 from kronbichler/reduce_overhead

Reduce organizational overhead/pointer chasing in FEEvaluation/read

Merge pull request #14315 from kronbichler/reduce_potential_aliasing

FEEvaluation::submit_xxx(): Create some local copies to reduce potential aliasing

Merge pull request #14312 from kronbichler/includes_comparator

Restructure includes of FloatingPointComparator

Merge pull request #14320 from tamiko/fix-cgal-clang

CGAL: use dealii's constexpr Utilities::pow instead of std::pow

CGAL: use dealii's constexpr Utilities::pow instead of std::pow

Fixes #14319

Create some local copies to reduce potential aliasing

Reduce organizational overhead/pointer chasing in FEEvaluation/read

Merge pull request #14234 from zjiaqi2018/dof-to-vector-dof-map

Merge pull request #14313 from dangars/dereference_cend

Do not dereference cend

Merge pull request #14308 from tamiko/fix-cgal

CGAL: fix warnings and fix compilation with cgal 5.5

Do not dereference cend

Avoid deferencing cend because it is undefined behaviour.
https://en.cppreference.com/w/cpp/container/vector/end

Merge pull request #14311 from kronbichler/simplify_dof_info

Simplify code in DoFInfo::read_dof_indices

Merge pull request #14310 from kronbichler/shortcut_constraints

Add shortcut to detect whether a DoF is constrained

Merge pull request #14309 from kronbichler/fix_complexity

Fix exponential complexity of FloatingPointComparator with nesting

Restructure includes of FloatingPointComparator

Simplify code in DoFInfo::read_dof_indices

Add shortcut to detection of whether a DoF is constrained

Pass scalars by value and fix a relative tolerance

Fix exponential complexity of FloatingPointComparator with nesting

CGAL: properly declare "namespace PMP"; fixes compilation with cgal 5.5

CGAL: avoid a compiler warning

Avoid an unnecessary copy:

source/cgal/intersections.cc:555:25: note: use reference type to prevent copying
  555 |         for (const auto f : tria_quad.finite_facets())
      |                         ^
      |                         &

Merge pull request #14307 from peterrum/FloatingPointComparator_TriangulationDescription

Use FloatingPointComparator in TriangulationDescription

Use FloatingPointComparator in TriangulationDescription

Merge pull request #14298 from peterrum/FloatingPointComparator_use

Use FloatingPointComparator in TensorProductMatrixSymmetricSumCollection

Use FloatingPointComparator in TensorProductMatrixSymmetricSumCollection

add MCA algorithm for 1d

Merge pull request #14306 from kronbichler/include_header

Add missing header file

Add missing header

Merge pull request #14303 from sebproell/dataout-xdmf-precision

Increase precision of time written in xdmf output

Merge pull request #14301 from kronbichler/update_documentation

Do not mention update_cell_dof_indices_cache in documentation

Do not mention update_cell_dof_indices_cache in documentation

Increase precision of time written in xdmf output

Merge pull request #14299 from kronbichler/fix_test2

Remove reference to update_cell_dof_indices_cache

Merge pull request #14300 from kronbichler/do_not_initialize_table

Do not default initialize projection matrix in GMRES

Merge pull request #14302 from peterrum/weight_fe_q_dofs_by_entity_clean_up

Clean up weight_fe_q_dofs_by_entity

Clean up weight_fe_q_dofs_by_entity

Merge pull request #14296 from peterrum/FloatingPointComparator

Rename FPArrayComparator -> FloatingPointComparator

Do not default initialize projection matrix in GMRES

Remove reference to update_cell_dof_indices_cache

Merge pull request #14246 from bangerth/error

Improve error message.

Merge pull request #14297 from peterrum/TensorProductMatrixSymmetricSumCollection_flat

TensorProductMatrixSymmetricSumCollection: store matrices/vectors flat

address comments

face dof to vector dof

Merge pull request #14236 from tjhei/hdf_empty

support XDMF writing with ranks without cells

Rename FPArrayComparator -> FloatingPointComparator

Introduce a new exception for HDF5.

use correct MPI type

Merge pull request #14068 from kronbichler/eliminate_dof_handler_cache

Remove the cell dof indices cache

Merge pull request #14166 from luca-heltai/cgal-dimension_independent_intersection

TensorProductMatrixSymmetricSumCollection: store matrices/vectors flat

Merge pull request #14183 from zjiaqi2018/fix-3d-half_hyper_shell-manifold

Merge pull request #14294 from peterrum/FPArrayComparator_Number

Remove template parameter from FPArrayComparator

Remove template parameter from FPArrayComparator

Merge pull request #14295 from peterrum/tensor_product_matrix_names

Make variable names in tensor_product_matrix.h more consistent

Merge pull request #14286 from kronbichler/index_owner_streamline

Revise some operations in compute_index_owner_internal

Merge pull request #14293 from peterrum/VectorizedArrayTrait_width_get

Extend VectorizedArrayTrait

Make variable names in tensor_product_matrix.h more consistent

Extend VectorizedArrayTrait

Merge pull request #14289 from peterrum/TensorProductMatrixSymmetricSumCache

Add TensorProductMatrixSymmetricSumCache

Add 3D/3D cuts with vertices only and minor fixes

changelog

Add TensorProductMatrixSymmetricSumCache

Merge pull request #13677 from nabw/petsc-bddc-preconditioner

Petsc bddc preconditioner

Merge pull request #14290 from jh66637/tolerance_for_neighbor_type

find_neighbor_type with customizable tolerance

Merge pull request #14284 from peterrum/vtu_ascii

Add DataOutBase::CompressionLevel::ascii

Merge pull request #14292 from peterrum/windoof_artifacts

Windows action: archive library only if merged into master

address comments

fix normal on a coarse mesh

Merge pull request #14287 from kronbichler/unroll_loop

Vector reductions: Unroll a loop in case of vectorization

Revise some operations in compute_index_owner_internal

Merge pull request #14288 from peterrum/TensorProductMatrixSymmetricSum_pointers

TensorProductMatrixSymmetricSum: switch to pointers

Add DataOutBase::CompressionLevel::plain_text

Windows action: archive library only if merged into master

find_neighbor_type with customizable tolerance

Merge pull request #14276 from peterrum/vtu_highorder_fix

Fix high-order output for vtu in parallel

TensorProductMatrixSymmetricSum: switch to pointers

Merge pull request #14283 from mschreter/avoid_warning

Unroll a loop in case of vectorization

Merge pull request #14285 from peterrum/DataOutBase_credits

Remove credits from DataOutBase

Remove credits from DataOutBase

DataOutFilter::n_cells 0

n_cells() now returns 0 instead of invalid_unsigned_int

Fix high-order output for vtu in parallel

Merge pull request #14282 from kronbichler/avoid_warning2

Avoid warning regarding unused variable

Merge pull request #14281 from kronbichler/remove_include

Remove unnecessary include file

Merge pull request #14280 from kronbichler/fix_uninitialized

Make sure not to work with possibly uninitialized variables

avoid warning

Merge pull request #14278 from peterrum/cheby_relax_fixes

PreconditionRelaxation/Chebyshev fixes

Merge pull request #14279 from peterrum/ConstraintInfo_ptr

internal::MatrixFreeFunctions::ConstraintInfo: switch data type

Avoid warning regarding uninitialized variable

Remove unnecessary include file

Make sure not to work with possibly uninitialized variables

internal::MatrixFreeFunctions::ConstraintInfo: switch data type

PreconditionRelaxation/Chebyshev fixes

Merge pull request #14273 from peterrum/fdm_refactor

Refactor TensorProductMatrixSymmetricSum

Refactor TensorProductMatrixSymmetricSum

Fixed unused variables warning

Merge pull request #14270 from peterrum/tria_global_active_cell_index_partitioner

Triangulation: implement global_*_cell_index_partitioner()