fix -Wstrict-prototypes warnings

Reported-by: Till Martens <till.martens@dlr.de>

Merge branch 'barry/minor-cleanup'

Minor cleanup, remove some outdated code, remove unneeded constructs, improve manual pages slightly, add missing test case

Time: 2.5 hours

Merge branch 'barry/half-precision'

removed stray #endif

Support for half-precision using __fp16.

Requires repository trunk of gcc and ARM systems
Configure with --with-precision=__fp16 --download-f2cblaslapack --with-fc=0 --with-cxx=0
Many standard PETSc

Support for half-precision using __fp16.

Requires repository trunk of gcc and ARM systems
Configure with --with-precision=__fp16 --download-f2cblaslapack --with-fc=0 --with-cxx=0
Many standard PETSc tests fail due to lack of precision

Funded-by: ECP
Project: fp16
Time: 24 hours

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Merge branch 'master' into stefano_zampini/feature-pcbddc-saddlepoint

This is needed to deal with some changes in MatNullSpace from commit 9d2471e

Merge branch 'master' into tisaac/dmplex-feature-real-to-ref

I need updated PetscFE interfaces in what I'm going to do

* master: (603 commits)
parmetis: fix typo in testsuite
Added PETSC_HAVE_A

Merge branch 'master' into tisaac/dmplex-feature-real-to-ref

I need updated PetscFE interfaces in what I'm going to do

* master: (603 commits)
parmetis: fix typo in testsuite
Added PETSC_HAVE_ATTRIBUTEALIGNED flag to makefile
PCSetUp_SVD() used incorrect matrix for matrix size in parallel, also need to skip LAPACK call if matrix size is zero
strumpack: update to latest version 1.0.4
Remove valgrind warning about MPI_Allreduce() with uninitialized data
sed for test output that has atol convergence with quad precision
updated ex1_nest tests
fixed incorrect key value
fix: bad merge a69d34a
test: move runex78 to TESTEXAMPLES_C_NOTSINGLE
build: fix warnings
sys: update test to produce same result - irrespective of debug/opt build - and presence of ~/.petscrc
sys: src/sys/examples/tests/ex30.c -> src/sys/examples/tests/ex32.c to avoid conflict in master
Sed output, since quad precision reduces below atol on these tests
remove automatically generated matrix names from test output files since can be different
Fixes for MatMPIXXXSetPreallocation(), they were not reentrant, since they kept the information used for matrix-vector products
GAMG: fix PCView_GAMG() format - and update output/ex56_0.out
superlu_dist: 64-bit-indices fix https://github.com/xiaoyeli/superlu_dist/issues/4
Add SNESSetDivergenceTolerance / -snes_divergence_tolerance.
fixed unit read in Plex
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Merge branch 'maint'

Conflicts:
config/BuildSystem/config/packages/boost.py
src/mat/impls/aij/mpi/mumps/mumps.c
src/sys/objects/ftn-custom/zstart.c

Merge branch 'balay/mpiuni-namespace-fc'

Merge branch 'stefano_zampini/feature-convert-matnest-matis' into stefano_zampini/feature-pcbddc-saddlepoint

I have to merge it here, since there's an API addition for MatIS in stefano_zampini/featu

Merge branch 'stefano_zampini/feature-convert-matnest-matis' into stefano_zampini/feature-pcbddc-saddlepoint

I have to merge it here, since there's an API addition for MatIS in stefano_zampini/feature-pcbddc-saddlepoint
that prevents me to smoothly merge stefano_zampini/feature-convert-matnest-matis into next.

This will also facilitate merging stefano_zampini/feature-pcbddc-saddlepoint into master

Conflicts:
src/docs/website/documentation/changes/dev.html

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mpiuni: namespace fortran interface and remove -with-mpiuni-fortran-binding option

Drawbacks:
- require cpp for fortran includes [so if user .f code uses mpif.h - this will break]
- cpp is case sens

mpiuni: namespace fortran interface and remove -with-mpiuni-fortran-binding option

Drawbacks:
- require cpp for fortran includes [so if user .f code uses mpif.h - this will break]
- cpp is case sensitive - currently providing mapping for MPI_Comm_rank(), MPI_COMM_RANK(), mpi_comm_rank() types

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fix wrong loop count

Remove use of unitialized memory by always zeroing out end of programname in petscinitialize_internal

Time: .5 hours
Reported-by: nightly tests

Merge branch 'maint'

* maint:
mpiuni: c8d2b952 was incomplete wrt change to using MPIUNI_FORTRAN_BINDING
build: fix issue with --with-threadsafety --with-scalar-type=complex

mpiuni: c8d2b952 was incomplete wrt change to using MPIUNI_FORTRAN_BINDING

fixes the following error with --with-mpi=0 --with-mpiuni-fortran-binding=0

/home/balay/petsc/arch-uni/lib/libpetsc.so: un

mpiuni: c8d2b952 was incomplete wrt change to using MPIUNI_FORTRAN_BINDING

fixes the following error with --with-mpi=0 --with-mpiuni-fortran-binding=0

/home/balay/petsc/arch-uni/lib/libpetsc.so: undefined reference to `mpi_init_'

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

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Merge branch 'tisaac/sys-fix-realloc' into tisaac/petscfe-matching-quadrature-order

* tisaac/sys-fix-realloc: (71 commits)
Sys: fix PetscTrReallocDefault() and PetscReallocAlign()
clearify when

Merge branch 'tisaac/sys-fix-realloc' into tisaac/petscfe-matching-quadrature-order

* tisaac/sys-fix-realloc: (71 commits)
Sys: fix PetscTrReallocDefault() and PetscReallocAlign()
clearify when MatMkl_CPardisoSetCntl() can be used in the manual pages
Fixed manual page for -snes_anderson_beta
Update zfftf.c
remove Hermitian information from output since it is only produced in complex case and thus produces different test output
fixes for 64 bit integers in test example, fix uninitialized variable in test example
tests: move runex49 to TESTEXAMPLES_C_NOTSINGLE
add a PCView_SVD to show parameters
-petscpartitioner_type simple was not being picked up by options thus generating test error
missing CHKERRQ(ierr) on PetscPrintf() statements in newly added test example
PetscViewerVTK: Move DM reference increment into the VTK viewer and out of the DM implementation, as suggested by Jed Brown
missing crosslinks between manual pages
Updated 3.7 release notes to clearly indicate how to update usage of KSP/SNES/TS/SetMonitor(xxx,XXXMonitorDefault,NULL,NULL);
Fix for commit b6480e041dd2293a65f96222772d68cdb4ed6306 that broke this example
Example of factorization of a singular matrix may actually work due to round off
removed unused variables
matshell: clean up and add some new MATOPs to Fortran.
Remove unneeded checks for use of the compressed row for diagonal block of matrices in GAMG
ptscotch: update to version 6.0.4
ptscotch: fix buggy pthread detection code on Mac/Linux
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Merge branch 'pr518/kooky089/jacht/PetscInitializeNoArguments-fortran/master'

Merge branch 'master' into barry/fix-successful-numerical-factorization-after-failure/master

The maint patch for the given problem cannot merge cleanly into next due to changes
in the same code in m

Merge branch 'master' into barry/fix-successful-numerical-factorization-after-failure/master

The maint patch for the given problem cannot merge cleanly into next due to changes
in the same code in master (the introduction of MatFactorGetError()) therefor need
to merge in master and use the new construct before merging to next

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Remove use of unitialized memory by always zeroing out end of programname in petscinitialize_internal

Time: .5 hours
Reported-by: nightly tests

Merge branch 'master' into psanan/pc-telescope-nearnullspace

made internal function static and added test example

Time: .1 hours

Added PetscInitializeNoArguments for Fortran

Merge branch 'knepley/fix-plex-output' into mark/snes-ex56

* knepley/fix-plex-output:
Quadrature: Fix creation init
Plex: Fix output optimization - We obviously have no test for this logic
All

Merge branch 'knepley/fix-plex-output' into mark/snes-ex56

* knepley/fix-plex-output:
Quadrature: Fix creation init
Plex: Fix output optimization - We obviously have no test for this logic
Allow the Richardson scale factor to be reset at each iteration
prevent a possible segfault when m is 0 (or less)
when configured --with-errorchecking=0, CHKERRV is missing
essl: fix PetscOptionsGetReal() usage
Fix code comment. Routine actually does not add arguments to database it just reads them in
Fix performance issue in MatAIJCUSPARSE after 34d6c7a
Plex ex6: fix PetscInt print codes
DMPlex: fix PetscPartitionerPartition() to deal with overlap

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Fix code comment. Routine actually does not add arguments to database it just reads them in