GitLab

[doc] Mention recent changes in CHANGELOG.md

See merge request !324

Add ComposedGridFunction

See merge request !316

Add utilities for std::reference_wrapper

See merge request !315

For given inner grid functions `g0`, ..., `gn` and an
outer function `f` this implements the grid function
mapping `x`  to `f(g0(x), ..., gn(x))`. It is assumed
that the grid functions are defined on the same
`EntitySet` and that their range type can be passed to
the outer function.

All functions are stored by value. Storing references
is possible using passing `std::ref(f)`. To resolve
extended methods internally this makes use of the
`Dune::Functions::resolveRef()` utility.

This adds the following helpers for handling `std::reference_wrapper`:

* A predicate `IsReferenceWrapper_v<R>` for detecting if
  `R` is a `std::reference_wrapper<T>`.
* A helper function `resolveRef` for resolving references
  wrapped in `std::reference_wrapper`. For type `T` providing
  a method `T::foo()` this allows to transparently use
  `resolveRef(t).foo()` if `t` is either a plain `T` or
  a `std::reference_wrapper<T>`.
* A type alias `ResolveRef_t<T>` to determine the resolved
  type for `T`.

Update changelog

See merge request !319

Deprecate treedata.hh

See merge request !317

Range value initialization in DiscreteGlobalBasisFunction.

See merge request !67

Make order of Lagrange basis public

See merge request !308

Ignore deprecation warnings inside a (deprecated) concept check

Closes #64

See merge request !312

Bump version to 2.9-git

See merge request !313

Fix caching in DiscreteGlobalBasisFunction

See merge request !310

This fixes an issue with caching in `DiscreteGlobalBasisFunction`
when using a subspace basis. For a subspace basis the size-of-tree and
index-within-tree do not coincide with size-of-localview
and index-within-localview (aka localindex), repectively.
Since this was not handled carefully which led to memory corruption
and thus valgrind errors and non-deterministic values whenever the
subspace was not starting with local index 0.

Now the cache has the size of the full local view but only
entries associated to the tree (i.e. subspace) are actually
written and read.

Extend test of `DiscreteGlobalBasisFunction` to also
check with the velocity and pressure subspace of a
Taylor-Hood basis.

Update list of authors

See merge request !307

Put method 'periodic' into Dune::Functions::BasisFactory::Experimental

See merge request !306

... rather than Dune::Functions::Experimental::BasisFactory.
I find the previous nesting order much less intuitive.  Committing it
in the first place was an oversight on my part.

Fix interpolation for vector-valued finite elements

See merge request !304

To achive this the Range of the finite elements is now explicitly passed to the consistency check.

Instead of looping over the components of possibly vector valued coefficients
the interpolation is done directly in the FiniteElementRange.

For backward compatibility the old implementation is kept for scalar valued
finite elements. Especially old dune-fufem style power-bases with scalar finite
elements and vector-valued coefficients are still supported.

The 'indices' method was calling the wrong 'size' method: the one of
the basis rather the one of the node.  Consequently, it overran
the index buffer, leading to segmentation faults.

The segfaults showed up for `periodicbasistest`, in

  !263

Introduce PeriodicBasis

See merge request !263

fix some issues when using python bindings with clang - some minor errors and a double registry issue

See merge request !302

PeriodicBasis is a meta basis---a basis that is parametrized
with another basis.  In a PeriodicBasis, global degrees of freedom
of the host basis can be grouped into equivalence classes,
which are then treated as single global degrees of freedom by the
PeriodicBasis.  This allows, in particular, to implement periodic
boundary conditions for discretizations without intersection
integrals.

As there was some controversy about whether such a basis is really
needed the implementation is in the namespace
Dune::Functions::Experimental for now.  That will the code some
more exposure.

Thanks go to Carsten Gräser, who wrote a lot of code in this commit.

[bugfix] Transform only the indices of the current element

See merge request !303

The 'indices' method was calling the wrong 'size' method: the one of
the basis rather the one of the node.  Consequently, it overran
the index buffer, leading to segmentation faults.

The segfaults showed up for `periodicbasistest`, in

  !263

Use Ubuntu docker for Python tests

See merge request !301

fix some issues when using python bindings with clang - some minor errors and an issue with sharing static variables between modules causing pybind11's 'double registry' error