It looks like we don't have a Fortran interface for this. In the source code:
2366: Developer Note:2367: This is labeled with C so does not automatically generate Fortran stubs and interfaces2368: because it requires multiple Fortran interfaces depending on which arguments are scalar or arrays. Someone else might be able to offer a workaround. Thanks, Mark On Tue, Nov 28, 2023 at 5:46 AM Frank Bramkamp <[email protected]> wrote: > Dear PETSc team, > > > We are using the latest petsc version 3.20.1, intel compiler 2023, > and we found the following problem: > > We want to call the function MatGetValuesLocal to extract a block > sub-matrix > from an assembled matrix (e.g. a 5x5 blocked sub matrix). We use the > matrix format MatCreateBAIJ in parallel. > In particular we try to call MatGetValuesLocal in Fortran. > > It seems that the linked does not find the subroutine MatGetValuesLocal. > The subroutine MatGetValues seems to be fine. > I guess that the fortran stubs/fortran interface is missing for this > routine. > On the documentation side, you also write a note for developers that the > fortran stubs and interface > Is not automatically generated for MatGetValuesLocal. So maybe that has > been forgotten to do. > > > Unfortunately I do not have any small test example, since we just > incorporated the function call into our own software. > Otherwise I would first have to set a small test example for the parallel > case. > > I think there is also an include file where one can check the fortran > interfaces ?! > I forgot where to look this up. > > > Greetings, Frank Bramkamp > > > > > > > > > > >
