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 'sneslinesearch-improvements' into 'main'

SNESLinesearch: Minor improvements

See merge request petsc/petsc!8630

SNESLinesearch: Minor improvements

- add missing configuration options in the documentation of the line searches (some of the available options were not listed), and consistently list their respecti

SNESLinesearch: Minor improvements

- add missing configuration options in the documentation of the line searches (some of the available options were not listed), and consistently list their respective default values

- add proper convergence criteria for the secant method in the L2 line search based on ltol and atol (otherwise, the secant method is mostly running for the maximum number of iterations)

- fix a small bug in the CP line search, where steptol * lambda was used to check for convergence based on the change of lambda instead of the ltol parameter

- rename sneslinesearch->maxstep to sneslinesearch->maxlambda in the options database to be consistent with its purpose in the algorithms

- rename SNESLineSearchL2 to SNESLineSearchSecant to better represent its underlying approach

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Merge branch 'jolivet/remove-cast' into 'main'

Use NULL or nullptr instead of casted 0

See merge request petsc/petsc!7857

Use NULL or nullptr instead of casted 0

Merge branch 'barry/2024-06-15/deprecate-petsc-current' into 'main'

Deprecate the use of PETSC_DEFAULT with PETSC_CURRENT since PETSC_DEFAULT is a...

See merge request petsc/petsc!7634

Update SNESSetTolerances() to accept PETSC_DETERMINE an PETSC_DECIDE

Merge branch 'barry/2024-06-05/fix-matcoarsen-view-mis' into 'main'

Fix bug where MatCoarsenView crashes when the coarsen object is incomplete

See merge request petsc/petsc!7612

minor cleanup of MatCoarsen implementations

Fix bug where MatCoarsenView crashes when the coarsen object is incomplete

Reported-by: Eric Chamberland

Merge branch 'barry/2024-06-03/fix-gamg-agg-matcoarsening-view' into 'main'

Fix bug when -pc_type gamg and -ksp_view_pre errors on missing MatCoarsen.

See merge request petsc/petsc!7602

Fix bug when -pc_type gamg and -ksp_view_pre errors on missing MatCoaren.

Reported-by: Eric Chamberland

Merge branch 'jolivet/add-matmatsolvetranspose_seqaij' into 'main'

MatMatSolveTranspose_SeqAIJ and minor housekeeping

See merge request petsc/petsc!7386

Docs: fix missing or extra dash in right-hand side

Merge branch 'barry/2024-01-19/typedef-snes-functions' into 'main'

add typedef for functions passed to SNESSetFunction() etc to match approach in TS

See merge request petsc/petsc!7206

Change the use of the _Fn suffix to indicate a typedef of a function to just Fn

As determined on a vote on GitLab

add typedef for functions passed to SNESSetFunction() etc to match approach in TS

I never liked Jed's use of typedef for function prototypes for a couple of reasons

1) you don't see immediately tha

add typedef for functions passed to SNESSetFunction() etc to match approach in TS

I never liked Jed's use of typedef for function prototypes for a couple of reasons

1) you don't see immediately that the argument to the function is a function pointer instead of standard variable when looking at source
2) you don't see at the exact location in the code the prototype of the function being passed in

but there is something to say for using these typedefs so

I've prototyped the change for SNES but slightly differently than what Jed did for TS

1) I append the typedef with _Ftn to mark that it is a function (helping to relieve the problem 1 above)
2) I made the typedef to be for a function, not a function pointer so it can also be used directly for things like

PETSC_EXTERN SNESJacobian_Ftn SNESComputeJacobianDefault;

I think the TS usage could be switched to this style without user code breakage, and deprecate the current TS typedef

Thoughts?

Just do SNES the same way as TS and live with less clarity?

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Merge branch 'stefanozampini/minsurf-local' into 'main'

Improve support for nonlinear domain decomposition solvers

See merge request petsc/petsc!7084

SNESNASM: some fixes

- let subsneses inherit the communicators from the local dms
- need to inject boundary values if boundarylocal is present
- fix missing convergence error for max_its == 0
- remo

SNESNASM: some fixes

- let subsneses inherit the communicators from the local dms
- need to inject boundary values if boundarylocal is present
- fix missing convergence error for max_its == 0
- remove PCLU defaults

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DMDASNES: support using user context if operation context is not provided

Add MPI_Allreduce inside the main objective driver

Merge remote-tracking branch 'origin/release'

Merge branch 'jolivet/fix-petsccallmpi' into 'release'

Fix PetscCallMPI(MPI_Allreduce()) with PETSc types

See merge request petsc/petsc!6348

Fix PetscCallMPI(MPI_Allreduce()) with PETSc types

Merge branch 'jacobf/2022-12-10/petscerrorcode-nodiscard' into 'main'

Feature: Non-discardable PetscErrorCode

See merge request petsc/petsc!5923