Merge branch 'barry/2026-01-13/ftn-generation-for-context-functions' into 'main'

Fortran generation of interface definitions for functions that take and return context variables (void *ctx and PetC

Merge branch 'barry/2026-01-13/ftn-generation-for-context-functions' into 'main'

Fortran generation of interface definitions for functions that take and return context variables (void *ctx and PetCtx ctx)

See merge request petsc/petsc!8956

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Add automatic generated fortran support for setting and returning contexts

Major cleanup of the code for setting and returning application (previously called user) contexts
- PetscCtx ctx is now t

Add automatic generated fortran support for setting and returning contexts

Major cleanup of the code for setting and returning application (previously called user) contexts
- PetscCtx ctx is now the standard for passing in contexts
- PetscCtxRt ctx is the standard for passing out contexts, including context destroy routines based on PetscCtxDestroyFn

Both of these are typedef to void*

Also removed most use of user and userctx for context arguments now consistently named ctx

Improved documentation on PetscCtx and PetscCtxRt and on how to use contexts (including getting them) from Fortran

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Merge branch 'barry/2025-07-30/fix-matshellsetoperationarg' into 'main'

Complete usage of PetscVoidFn and PetscErrorCodeFn and introduce PetscFortranCallbackFn

See merge request petsc/petsc!8615

Change use of void (*)(void) and void (**)(void) in the PETSc API to PetscVoidFn * and PetscVoidFn ** or PetscErrorCodeFn * or PetscErrorCodeFn **

Merge branch 'knepley/feature-ts-landau-moments' into 'main'

TS Hamiltonian ex4: Preliminary moment equations

See merge request petsc/petsc!8573

DM: Allow creation of a gradient matrix between spaces
- This is like the mass matrix, but with a gradient on the continuous space
- We use this for conservation laws in moments of particle systems
-

DM: Allow creation of a gradient matrix between spaces
- This is like the mass matrix, but with a gradient on the continuous space
- We use this for conservation laws in moments of particle systems
- Add projection to DMSwarm to implement this

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Merge branch 'ksagiyam/fix_submesh_coordinates' into 'main'

Ksagiyam/fix submesh coordinates

See merge request petsc/petsc!8353

plexsubmesh: make submesh inherit CG/DG coordinate elements

Merge branch 'knepley/feature-dm-bounds' into 'main'

Plex: Now allow variable bounds along boundaries

See merge request petsc/petsc!8402

Plex: Now allow variable bounds along boundaries
- Add DM_BC_LOWER_BOUND and DM_BC_LOWER_BOUND
- Add DMHasBound()
- Add DMPlexInsertBounds() and implementation DMPlexInsertBounds_Plex()

Merge branch 'barry/2024-04-29/add-fortran-enums' into 'main'

Major updates to Fortran interface

See merge request petsc/petsc!7517

Fortran 90: fully embrace After 34 years!

- deprecate use of 'F90' in Fortran function names
- use Fortran pointers when appropriate
- the new Fortran API is not backward compatible with previous ve

Fortran 90: fully embrace After 34 years!

- deprecate use of 'F90' in Fortran function names
- use Fortran pointers when appropriate
- the new Fortran API is not backward compatible with previous versions!
- also clean up inconsistent PETSc code detected by new Fortran generation tools
- drop use of bfort
- automatically generate all the Fortran PETSc objects, enums etc from the include files
- generate most of the Fortran interface definitions and functions from the source code
- simplify the number and organization of Fortran modules

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

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Merge remote-tracking branch 'origin/release'

Merge branch 'barry/2024-11-26/improve-man-pages/release' into 'release'

Improve some manual pages in KSP/SNES

See merge request petsc/petsc!8071

Improve some manual pages in KSP/SNES

Merge branch 'jrwrigh/deprecate_get_section' into 'main'

DM: Deprecate DM{Get,Set}Section

See merge request petsc/petsc!7997

DM: Deprecate DM{Get,Set}Section

They were already replaced by DM{Get,Set}LocalSection back in 3.12, but
weren't deprecated for some reason

Merge branch 'barry/2024-09-29/fix-function-typedef-style' into 'main'

Unify handling of context destructors

See merge request petsc/petsc!7900

Unifies all context destructors to have a form of PetscCtxDestroyFn == PetscErrorCode (*)(void **)

Changes the previous subset of destructor APIs that used PetscErrorCode (*)(void *) (mostly those t

Unifies all context destructors to have a form of PetscCtxDestroyFn == PetscErrorCode (*)(void **)

Changes the previous subset of destructor APIs that used PetscErrorCode (*)(void *) (mostly those that
used PetscContainer

- Now allows any context to be a PetscObject
- Will provide a cleaner mapping to bindings in other languages
- Simplifies the maintenance of PETSc source code; improves clarity

Not backward compatible, compiler warnings will tell users what functions need to be updated

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Merge branch 'knepley/feature-1d-affine-map' into 'main'

Fixes for submesh handling

See merge request petsc/petsc!7823

DM+DS: Create FE with degree bounds
- Add degree bounds to DMCopyFields(), DMCopyDS(), PetscDSCopy(), and PetscDSSelectDiscretizations()
- Add PetscFELimitDegree()

Merge branch 'stefanozampini/dmplex-mass' into 'main'

Fixes/enhancements for mass matrix support

See merge request petsc/petsc!7649

DM: add support for local mass lumping

Merge branch 'knepley/feature-hdf5-seq-len' into 'main'

HDF5: Allow reading the length of a time sequence

See merge request petsc/petsc!7536

DM: Add interface to query length of a sequence in HDF5