Update computation/export of connectivity information in VTKMeshWriter and AdiosWriter
This MR brings two main updates:
- Computation of connectivity by the routines in
VTKMeshWriter
now consistently uses HyTeG'suint_t
and leaves conversion to the desired integer datatype for export to the output stream object. - The second change was triggered through a request by the Fortran users in the TerraNeo community. We now support a compile time option
HYTEG_USE_SIGNED_INT_FOR_ADIOS2
. If this is activated theAdiosWriter
will useint64_t
as datatype for the connectivity information when exporting for ParaView. Otherwise it will useuint64_t
.