Now changes are in the class, function, methods documentation and not in
the headers.
This unifies to the most common case.

This unifies the doxygen headers. If the (doxygen) header is not
starting with \file, the following documentation is attributed to a
different entity resulting is multiple copyright blocks and the like in
the doxygen's html files.

Replacing deprecated PETSC_NULL since petsc version 3.19.

making reading in python much easier.

Dmitri Naumov authored 2 years ago and Lars Bilke committed 2 years ago

Negative indices mean ghost nodes for which the nodes
owning partition is responsible.
Might be helpful when implementing new BCs.

 - Avoid shadowing,

 - Unify declaration/definition name.

The linear solver parser is only used in the ProjectData
and there is no need to include it in the GlobalMatrixVector
file. The latter is included by each process pulling in
the config tree dependencies.

files

and set explicit comparison to null pointer in several if-condition.

Changing include order causes an internal Eigen error:
Eigen/src/IterativeSolvers/InternalHeaderCheck.h:2:2: error:
   #error "Please include unsupported/Eigen/IterativeSolvers
   instead of including headers inside the src directory directly."

If possible the scaling include should be removed in the future.