Docs: fix nonexisting functions and variables

Merge remote-tracking branch 'origin/release'

improve a few plex manual pages

The use case of PetscOptionsGetViewer() has evolved to no longer be the get/restore model

Hence the code needs to be refactored

Introduce PetscCallNull() and PetscCallMPINull() to simplify PETSC_VI

The use case of PetscOptionsGetViewer() has evolved to no longer be the get/restore model

Hence the code needs to be refactored

Introduce PetscCallNull() and PetscCallMPINull() to simplify PETSC_VIEWER_XXXX_() routines

Reported-by: James Wright
Thanks-to: Jeremy L Thompson

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Merge branch 'barry/2024-06-30/doc-vecsetinf' into 'main'

Refactor VecSetInf() into VecFlag() and deprecate VecSetInf()

See merge request petsc/petsc!7661

Refactor VecSetInf() into VecFlag() and deprecate VecSetInf()

Reported-by: Stefano Zampini

Merge remote-tracking branch 'origin/release'

Improve the Fortran handling of functions that take ctx with type(*) support

Reported-by: Adrian Croucher <a.croucher@auckland.ac.nz>

Fix error checking in DMDA for periodic cases where it cannot handle periodic boundary conditions

Also add error checking to MatFDColoring() to check for bad coloring input.

Also fix bug where call

Fix error checking in DMDA for periodic cases where it cannot handle periodic boundary conditions

Also add error checking to MatFDColoring() to check for bad coloring input.

Also fix bug where call to ISColoringGetIS() where the is already exists and the caller requests PETSC_OWN_POINTER

Reported-by: Richard Katz <richard.katz@earth.ox.ac.uk>

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Merge remote-tracking branch 'origin/release'

Kokkos: try to always have an execution space argument

SF: minor revision avoiding useless log events

Vec: use VecGetArrayWrite for dest. vector in VecCopy

Config: get rid of PETSC_HAVE_{I_MPI, MVAPICH2}_NUMVERSION and use the PETSC_PKG_ prefix

Config: get rid of PETSC_HAVE_MPICH_NUMVERSION and use petscpkg_version.h

Config: get rid of PETSC_HAVE_OMPI_MAJOR_VERSION and include it in petscpkg_version.h

Merge remote-tracking branch 'origin/release'

SF: add a workaround for an ompi-5.0.x bug not allowing null arrays when size is zero

Note the bug is fixed at https://github.com/open-mpi/ompi/pull/12614

This requires some changes to user FORTRAN code

Pass PETSC_NULL_XXX_ARRAY when passing a NULL as an argument that is expecting an array
Pass PETSC_NULL_ENUM when argument returns an enum instead of

This requires some changes to user FORTRAN code

Pass PETSC_NULL_XXX_ARRAY when passing a NULL as an argument that is expecting an array
Pass PETSC_NULL_ENUM when argument returns an enum instead of PETSC_NULL_INTEGER
Pass arrays (and not scalar values) when the argument is expecting an array; this means replace, for example, the argument v with [v]
Use PetscObjectIsNull(obj) to check if the object is NULL, instead of obj == PETSC_NULL_XXX

The compiler will now automatically prevent you from using the wrong argument type for the first three bullets above
This will also require an update sowing with the new sowing branch this MR is using.

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All constructors should do PetscAssertPointer on output object

Reported-by: Blaise Bourdin

Constructors should not initialize the output to NULL upon entry, serves no purpose

Fix some formatting i

All constructors should do PetscAssertPointer on output object

Reported-by: Blaise Bourdin

Constructors should not initialize the output to NULL upon entry, serves no purpose

Fix some formatting in constructors

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Merge remote-tracking branch 'origin/release'

Minor docs fixes

ISSort: do not sort an already sorted IS

IS: set IS_SORTED to PETSC_TRUE when possible

Merge remote-tracking branch 'origin/release'