Merge branch 'barry/2026-02-09/docs-dm' into 'main'

Add a bit more discussion of DM and their commonalities to the docs

See merge request petsc/petsc!9018

Add a bit more discussion of DM and their commonalities to the docs

Merge branch 'jrwrigh/petscsection_distribute_data' into 'main'

feat: Add PetscSectionMigrateData()

See merge request petsc/petsc!8963

feat(section): Add PetscSectionDistributeData()

This is a copy/paste of `DMPlexDistributeData()`, but brought up to the
PetscSection interface because the routine is completely generic

Co-authored-

feat(section): Add PetscSectionDistributeData()

This is a copy/paste of `DMPlexDistributeData()`, but brought up to the
PetscSection interface because the routine is completely generic

Co-authored-by: Barry Smith <bsmith@mcs.anl.gov>

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Merge remote-tracking branch 'origin/release'

Merge branch 'jrwrigh/isoperiodic_plex_mat_fix' into 'release'

fix(plex): Correct the adjancency leaf/root pair helper function

See merge request petsc/petsc!8772

section: Allow NULL array in `PetscSectionArrayView()`

Only if the section storage size is 0, otherwise raise error.

Merge branch 'jrwrigh/fix_section_printing' into 'main'

fix(section): Use PetscReal for non-standard FP

See merge request petsc/petsc!8737

fix(section): Use PetscReal for non-standard FP

Compile errors when using `--with-scalar-type=complex --with-precision=__float128` due to illegal cast:
```
petsc/src/vec/is/section/interface/section

fix(section): Use PetscReal for non-standard FP

Compile errors when using `--with-scalar-type=complex --with-precision=__float128` due to illegal cast:
```
petsc/src/vec/is/section/interface/section.c:2630:65: error: invalid cast from type 'PetscScalar' {aka '__complex__ _Float128'} to type 'double'
2630 | PetscCall(PetscViewerASCIISynchronizedPrintf(viewer, " %g", (double)((PetscScalar *)array)[index]));
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
```

Also changed the function name to be more reflection of what it does.

Reported-by: Jose E. Roman <jroman@dsic.upv.es>

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Merge branch 'jrwrigh/isoperiodic_plex_mat_preallocate' into 'main'

fix(Plex): Fix Mat preallocation when isoperiodic is used

See merge request petsc/petsc!8712

section: Implement ArrayView function, use for PetscSectionVecView

Merge branch 'barry/2025-09-04/deprecate-mpiu-bool' into 'main'

Deprecate MPIU_BOOL which used to be for PETSc's enum Bool but now is just MPI_C_BOOL

See merge request petsc/petsc!8691

Deprecate MPIU_BOOL which used to be for PETSc' enum Bool but now is just MPI_C_BOOL so no longer needs its own name

Merge branch 'jolivet/clang-format-21' into 'main'

clang-format-21

See merge request petsc/petsc!8202

Remove unnecessary braces around one-liners

git grep -lE "[ ]*(if|for|while) \(.*\) {[^;]*;[^;]*}$" -- '*.c' '*.cxx' '*.cu' '*.h' '*.hpp' '*.cpp' | xargs sed -i '' -E 's#([ ]*)(if|for|while) \((.*)\

Remove unnecessary braces around one-liners

git grep -lE "[ ]*(if|for|while) \(.*\) {[^;]*;[^;]*}$" -- '*.c' '*.cxx' '*.cu' '*.h' '*.hpp' '*.cpp' | xargs sed -i '' -E 's#([ ]*)(if|for|while) \((.*)\) {([^;]*);([^;]*)}$#\1\2 \(\3\)\4;\5#'

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Convert some SETERRQ() to PetscCheck()

Merge branch 'knepley/fix-plex-orient-sf' into 'main'

Plex: Fix handling of NULL locals in PlexOrient

See merge request petsc/petsc!8443

Section: Copy block starts when subsetting

Merge remote-tracking branch 'origin/release'

Merge branch 'barry/2025-03-29/docs-fortran/release' into 'release'

Fix manual pages related to Fortran

See merge request petsc/petsc!8257

Fix manual pages related to Fortran

Remove a couple of dead Fortran bindings

Merge remote-tracking branch 'origin/release'

Merge branch 'jrwrigh/section_docs' into release

docs: Add user manual documentation of PetscSection

See merge request petsc/petsc!7766

docs: Add user manual documentation of PetscSection

Merge branch 'jolivet/clang-format-20' into 'main'

clang-format-20

See merge request petsc/petsc!7849