Date: 2021-03-03T22:28:19+00:00

Actual source code: petscsys.h
petsc-3.14.5 2021-03-03
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      1: /*
      2:    This is the main PETSc include file (for C and C++).  It is included by all
      3:    other PETSc include files, so it almost never has to be specifically included.
      4: */
      5: #if !defined(PETSCSYS_H)
      6: #define PETSCSYS_H
      7: /* ========================================================================== */
      8: /*
      9:    petscconf.h is contained in ${PETSC_ARCH}/include/petscconf.h it is
     10:    found automatically by the compiler due to the -I${PETSC_DIR}/${PETSC_ARCH}/include.
     11:    For --prefix installs the ${PETSC_ARCH}/ does not exist and petscconf.h is in the same
     12:    directory as the other PETSc include files.
     13: */
     14: #include <petscconf.h>
     15: #include <petscfix.h>

     17: #if defined(PETSC_HAVE_VIENNACL) || defined(PETSC_HAVE_CUDA) || defined(PETSC_HAVE_HIP) || defined(PETSC_HAVE_KOKKOS)
     18:    #define PETSC_HAVE_DEVICE
     19: #endif

     21: #if defined(PETSC_DESIRE_FEATURE_TEST_MACROS)
     22: /*
     23:    Feature test macros must be included before headers defined by IEEE Std 1003.1-2001
     24:    We only turn these in PETSc source files that require them by setting PETSC_DESIRE_FEATURE_TEST_MACROS
     25: */
     26: #  if defined(PETSC__POSIX_C_SOURCE_200112L) && !defined(_POSIX_C_SOURCE)
     27: #    define _POSIX_C_SOURCE 200112L
     28: #  endif
     29: #  if defined(PETSC__BSD_SOURCE) && !defined(_BSD_SOURCE)
     30: #    define _BSD_SOURCE
     31: #  endif
     32: #  if defined(PETSC__DEFAULT_SOURCE) && !defined(_DEFAULT_SOURCE)
     33: #    define _DEFAULT_SOURCE
     34: #  endif
     35: #  if defined(PETSC__GNU_SOURCE) && !defined(_GNU_SOURCE)
     36: #    define _GNU_SOURCE
     37: #  endif
     38: #endif

     40: #include <petscsystypes.h>

     42: /* ========================================================================== */
     43: /*
     44:    This facilitates using the C version of PETSc from C++ and the C++ version from C.
     45: */
     46: #if defined(__cplusplus)
     47: #  define PETSC_FUNCTION_NAME PETSC_FUNCTION_NAME_CXX
     48: #else
     49: #  define PETSC_FUNCTION_NAME PETSC_FUNCTION_NAME_C
     50: #endif

     52: /* ========================================================================== */
     53: /*
     54:    Since PETSc manages its own extern "C" handling users should never include PETSc include
     55:    files within extern "C". This will generate a compiler error if a user does put the include
     56:    file within an extern "C".
     57: */
     58: #if defined(__cplusplus)
     59: void assert_never_put_petsc_headers_inside_an_extern_c(int); void assert_never_put_petsc_headers_inside_an_extern_c(double);
     60: #endif

     62: #if defined(__cplusplus)
     63: #  define PETSC_RESTRICT PETSC_CXX_RESTRICT
     64: #else
     65: #  define PETSC_RESTRICT PETSC_C_RESTRICT
     66: #endif

     68: #if defined(__cplusplus)
     69: #  define PETSC_INLINE PETSC_CXX_INLINE
     70: #else
     71: #  define PETSC_INLINE PETSC_C_INLINE
     72: #endif

     74: #define PETSC_STATIC_INLINE static PETSC_INLINE

     76: #if defined(_WIN32) && defined(PETSC_USE_SHARED_LIBRARIES) /* For Win32 shared libraries */
     77: #  define  __declspec(dllexport)
     78: #  define PETSC_DLLIMPORT __declspec(dllimport)
     79: #  define PETSC_VISIBILITY_INTERNAL
     80: #elif defined(PETSC_USE_VISIBILITY_CXX) && defined(__cplusplus)
     81: #  define  __attribute__((visibility ("default")))
     82: #  define PETSC_DLLIMPORT __attribute__((visibility ("default")))
     83: #  define PETSC_VISIBILITY_INTERNAL __attribute__((visibility ("hidden")))
     84: #elif defined(PETSC_USE_VISIBILITY_C) && !defined(__cplusplus)
     85: #  define  __attribute__((visibility ("default")))
     86: #  define PETSC_DLLIMPORT __attribute__((visibility ("default")))
     87: #  define PETSC_VISIBILITY_INTERNAL __attribute__((visibility ("hidden")))
     88: #else
     89: #  define
     90: #  define PETSC_DLLIMPORT
     91: #  define PETSC_VISIBILITY_INTERNAL
     92: #endif

     94: #if defined(petsc_EXPORTS)      /* CMake defines this when building the shared library */
     95: #  define PETSC_VISIBILITY_PUBLIC
     96: #else  /* Win32 users need this to import symbols from petsc.dll */
     97: #  define PETSC_VISIBILITY_PUBLIC PETSC_DLLIMPORT
     98: #endif

    100: /*
    101:     Functions tagged with PETSC_EXTERN in the header files are
    102:   always defined as extern "C" when compiled with C++ so they may be
    103:   used from C and are always visible in the shared libraries
    104: */
    105: #if defined(__cplusplus)
    106: #  define PETSC_EXTERN extern "C" PETSC_VISIBILITY_PUBLIC
    107: #  define PETSC_EXTERN_TYPEDEF extern "C"
    108: #  define PETSC_INTERN extern "C" PETSC_VISIBILITY_INTERNAL
    109: #else
    110: #  define PETSC_EXTERN extern PETSC_VISIBILITY_PUBLIC
    111: #  define PETSC_EXTERN_TYPEDEF
    112: #  define PETSC_INTERN extern PETSC_VISIBILITY_INTERNAL
    113: #endif

    115: #include <petscversion.h>
    116: #define PETSC_AUTHOR_INFO  "       The PETSc Team\n    petsc-maint@mcs.anl.gov\n https://www.mcs.anl.gov/petsc/\n"

    118: /* ========================================================================== */

    120: /*
    121:     Defines the interface to MPI allowing the use of all MPI functions.

    123:     PETSc does not use the C++ binding of MPI at ALL. The following flag
    124:     makes sure the C++ bindings are not included. The C++ bindings REQUIRE
    125:     putting mpi.h before ANY C++ include files, we cannot control this
    126:     with all PETSc users. Users who want to use the MPI C++ bindings can include
    127:     mpicxx.h directly in their code
    128: */
    129: #if !defined(MPICH_SKIP_MPICXX)
    130: #  define MPICH_SKIP_MPICXX 1
    131: #endif
    132: #if !defined(OMPI_SKIP_MPICXX)
    133: #  define OMPI_SKIP_MPICXX 1
    134: #endif
    135: #if defined(PETSC_HAVE_MPIUNI)
    136: #  include <petsc/mpiuni/mpi.h>
    137: #else
    138: #  include <mpi.h>
    139: #endif

    141: /*MC
    142:   PetscDefined - determine whether a boolean macro is defined

    144:   Notes:
    145:   The prefix "PETSC_" is added to the argument.

    147:   Typical usage is within normal code,

    149: $   if (PetscDefined(USE_DEBUG)) { ... }

    151:   but can also be used in the preprocessor,

    153: $   #if PetscDefined(USE_DEBUG)
    154: $     ...
    155: $   #else

    157:   Either way, it evaluates true if PETSC_USE_DEBUG is defined (merely defined or defined to 1), and false if PETSC_USE_DEBUG is undefined.  This macro
    158:   should not be used if its argument may be defined to a non-empty value other than 1.

    160:   To avoid prepending "PETSC_", say to add custom checks in user code, one can use e.g.

    162: $  #define FooDefined(d) PetscDefined_(FOO_ ## d)

    164:   Developer Notes:
    165:   Getting something that works in C and CPP for an arg that may or may not be defined is tricky.  Here, if we have
    166:   "#define PETSC_HAVE_BOOGER 1" we match on the placeholder define, insert the "0," for arg1 and generate the triplet
    167:   (0, 1, 0).  Then the last step cherry picks the 2nd arg (a one).  When PETSC_HAVE_BOOGER is not defined, we generate
    168:   a (... 1, 0) pair, and when the last step cherry picks the 2nd arg, we get a zero.

    170:   Our extra expansion via PetscDefined__take_second_expand() is needed with MSVC, which has a nonconforming
    171:   implementation of variadic macros.

    173:   Level: developer
    174: M*/
    175: #if !defined(PETSC_SKIP_VARIADIC_MACROS)
    176: #  define PetscDefined_arg_1    shift,
    177: #  define PetscDefined_arg_     shift,
    178: #  define PetscDefined__take_second_expanded(ignored, val, ...) val
    179: #  define PetscDefined__take_second_expand(args) PetscDefined__take_second_expanded args
    180: #  define PetscDefined__take_second(...) PetscDefined__take_second_expand((__VA_ARGS__))
    181: #  define PetscDefined___(arg1_or_junk) PetscDefined__take_second(arg1_or_junk 1, 0, at_)
    182: #  define PetscDefined__(value) PetscDefined___(PetscDefined_arg_ ## value)
    183: #  define PetscDefined_(d)      PetscDefined__(d)
    184: #  define PetscDefined(d)       PetscDefined_(PETSC_ ## d)
    185: #endif

    187: /*
    188:    Perform various sanity checks that the correct mpi.h is being included at compile time.
    189:    This usually happens because
    190:       * either an unexpected mpi.h is in the default compiler path (i.e. in /usr/include) or
    191:       * an extra include path -I/something (which contains the unexpected mpi.h) is being passed to the compiler
    192: */
    193: #if defined(PETSC_HAVE_MPIUNI)
    194: #  if !defined(MPIUNI_H)
    195: #    error "PETSc was configured with --with-mpi=0 but now appears to be compiling using a different mpi.h"
    196: #  endif
    197: #elif defined(PETSC_HAVE_I_MPI_NUMVERSION)
    198: #  if !defined(I_MPI_NUMVERSION)
    199: #    error "PETSc was configured with I_MPI but now appears to be compiling using a non-I_MPI mpi.h"
    200: #  elif I_MPI_NUMVERSION != PETSC_HAVE_I_MPI_NUMVERSION
    201: #    error "PETSc was configured with one I_MPI mpi.h version but now appears to be compiling using a different I_MPI mpi.h version"
    202: #  endif
    203: #elif defined(PETSC_HAVE_MVAPICH2_NUMVERSION)
    204: #  if !defined(MVAPICH2_NUMVERSION)
    205: #    error "PETSc was configured with MVAPICH2 but now appears to be compiling using a non-MVAPICH2 mpi.h"
    206: #  elif MVAPICH2_NUMVERSION != PETSC_HAVE_MVAPICH2_NUMVERSION
    207: #    error "PETSc was configured with one MVAPICH2 mpi.h version but now appears to be compiling using a different MVAPICH2 mpi.h version"
    208: #  endif
    209: #elif defined(PETSC_HAVE_MPICH_NUMVERSION)
    210: #  if !defined(MPICH_NUMVERSION) || defined(MVAPICH2_NUMVERSION) || defined(I_MPI_NUMVERSION)
    211: #    error "PETSc was configured with MPICH but now appears to be compiling using a non-MPICH mpi.h"
    212: #  elif (MPICH_NUMVERSION/100000 != PETSC_HAVE_MPICH_NUMVERSION/100000) || (MPICH_NUMVERSION%100000/1000 < PETSC_HAVE_MPICH_NUMVERSION%100000/1000)
    213: #    error "PETSc was configured with one MPICH mpi.h version but now appears to be compiling using a different MPICH mpi.h version"
    214: #  endif
    215: #elif defined(PETSC_HAVE_OMPI_MAJOR_VERSION)
    216: #  if !defined(OMPI_MAJOR_VERSION)
    217: #    error "PETSc was configured with OpenMPI but now appears to be compiling using a non-OpenMPI mpi.h"
    218: #  elif (OMPI_MAJOR_VERSION != PETSC_HAVE_OMPI_MAJOR_VERSION) || (OMPI_MINOR_VERSION != PETSC_HAVE_OMPI_MINOR_VERSION) || (OMPI_RELEASE_VERSION < PETSC_HAVE_OMPI_RELEASE_VERSION)
    219: #    error "PETSc was configured with one OpenMPI mpi.h version but now appears to be compiling using a different OpenMPI mpi.h version"
    220: #  endif
    221: #elif defined(PETSC_HAVE_MSMPI_VERSION)
    222: #  if !defined(MSMPI_VER)
    223: #    error "PETSc was configured with MSMPI but now appears to be compiling using a non-MSMPI mpi.h"
    224: #  elif (MSMPI_VER != PETSC_HAVE_MSMPI_VERSION)
    225: #    error "PETSc was configured with one MSMPI mpi.h version but now appears to be compiling using a different MSMPI mpi.h version"
    226: #  endif
    227: #elif defined(OMPI_MAJOR_VERSION) || defined(MPICH_NUMVERSION) || defined(MSMPI_VER)
    228: #  error "PETSc was configured with undetermined MPI - but now appears to be compiling using any of OpenMPI, MS-MPI or a MPICH variant"
    229: #endif

    231: /*
    232:     Need to put stdio.h AFTER mpi.h for MPICH2 with C++ compiler
    233:     see the top of mpicxx.h in the MPICH2 distribution.
    234: */
    235: #include <stdio.h>

    237: /* MSMPI on 32bit windows requires this yukky hack - that breaks MPI standard compliance */
    238: #if !defined(MPIAPI)
    239: #define MPIAPI
    240: #endif

    242: /*
    243:    Support for Clang (>=3.2) matching type tag arguments with void* buffer types.
    244:    This allows the compiler to detect cases where the MPI datatype argument passed to a MPI routine
    245:    does not match the actual type of the argument being passed in
    246: */
    247: #if defined(__has_attribute) && defined(works_with_const_which_is_not_true)
    248: #  if __has_attribute(argument_with_type_tag) && __has_attribute(pointer_with_type_tag) && __has_attribute(type_tag_for_datatype)
    249: #    define PetscAttrMPIPointerWithType(bufno,typeno) __attribute__((pointer_with_type_tag(MPI,bufno,typeno)))
    250: #    define PetscAttrMPITypeTag(type)                 __attribute__((type_tag_for_datatype(MPI,type)))
    251: #    define PetscAttrMPITypeTagLayoutCompatible(type) __attribute__((type_tag_for_datatype(MPI,type,layout_compatible)))
    252: #  endif
    253: #endif
    254: #if !defined(PetscAttrMPIPointerWithType)
    255: #  define PetscAttrMPIPointerWithType(bufno,typeno)
    256: #  define PetscAttrMPITypeTag(type)
    257: #  define PetscAttrMPITypeTagLayoutCompatible(type)
    258: #endif

    260: PETSC_EXTERN MPI_Datatype MPIU_ENUM PetscAttrMPITypeTag(PetscEnum);
    261: PETSC_EXTERN MPI_Datatype MPIU_BOOL PetscAttrMPITypeTag(PetscBool);

    263: /*MC
    264:    MPIU_INT - MPI datatype corresponding to PetscInt

    266:    Notes:
    267:    In MPI calls that require an MPI datatype that matches a PetscInt or array of PetscInt values, pass this value.

    269:    Level: beginner

    271: .seealso: PetscReal, PetscScalar, PetscComplex, PetscInt, MPIU_REAL, MPIU_SCALAR, MPIU_COMPLEX
    272: M*/

    274: #if defined(PETSC_HAVE_STDINT_H) && defined(PETSC_HAVE_INTTYPES_H) && defined(PETSC_HAVE_MPI_INT64_T) /* MPI_INT64_T is not guaranteed to be a macro */
    275: #  define MPIU_INT64 MPI_INT64_T
    276: #  define PetscInt64_FMT PRId64
    277: #elif (PETSC_SIZEOF_LONG_LONG == 8)
    278: #  define MPIU_INT64 MPI_LONG_LONG_INT
    279: #  define PetscInt64_FMT "lld"
    280: #elif defined(PETSC_HAVE___INT64)
    281: #  define MPIU_INT64 MPI_INT64_T
    282: #  define PetscInt64_FMT "ld"
    283: #else
    284: #  error "cannot determine PetscInt64 type"
    285: #endif

    287: PETSC_EXTERN MPI_Datatype MPIU_FORTRANADDR;

    289: #if defined(PETSC_USE_64BIT_INDICES)
    290: #  define MPIU_INT MPIU_INT64
    291: #  define PetscInt_FMT PetscInt64_FMT
    292: #else
    293: #  define MPIU_INT MPI_INT
    294: #  define PetscInt_FMT "d"
    295: #endif

    297: /*
    298:     For the rare cases when one needs to send a size_t object with MPI
    299: */
    300: PETSC_EXTERN MPI_Datatype MPIU_SIZE_T;

    302: /*
    303:       You can use PETSC_STDOUT as a replacement of stdout. You can also change
    304:     the value of PETSC_STDOUT to redirect all standard output elsewhere
    305: */
    306: PETSC_EXTERN FILE* PETSC_STDOUT;

    308: /*
    309:       You can use PETSC_STDERR as a replacement of stderr. You can also change
    310:     the value of PETSC_STDERR to redirect all standard error elsewhere
    311: */
    312: PETSC_EXTERN FILE* PETSC_STDERR;

    314: /*MC
    315:     PetscUnlikely - hints the compiler that the given condition is usually FALSE

    317:     Synopsis:
    318: #include <petscsys.h>
    319:     PetscBool  PetscUnlikely(PetscBool  cond)

    321:     Not Collective

    323:     Input Parameters:
    324: .   cond - condition or expression

    326:     Notes:
    327:     This returns the same truth value, it is only a hint to compilers that the resulting
    328:     branch is unlikely.

    330:     Level: advanced

    332: .seealso: PetscUnlikelyDebug(), PetscLikely(), CHKERRQ
    333: M*/

    335: /*MC
    336:     PetscLikely - hints the compiler that the given condition is usually TRUE

    338:     Synopsis:
    339: #include <petscsys.h>
    340:     PetscBool  PetscLikely(PetscBool  cond)

    342:     Not Collective

    344:     Input Parameters:
    345: .   cond - condition or expression

    347:     Notes:
    348:     This returns the same truth value, it is only a hint to compilers that the resulting
    349:     branch is likely.

    351:     Level: advanced

    353: .seealso: PetscUnlikely()
    354: M*/
    355: #if defined(PETSC_HAVE_BUILTIN_EXPECT)
    356: #  define PetscUnlikely(cond)   __builtin_expect(!!(cond),0)
    357: #  define PetscLikely(cond)     __builtin_expect(!!(cond),1)
    358: #else
    359: #  define PetscUnlikely(cond)   (cond)
    360: #  define PetscLikely(cond)     (cond)
    361: #endif

    363: /*MC
    364:     PetscUnlikelyDebug - hints the compiler that the given condition is usually FALSE, eliding the check in optimized mode

    366:     Synopsis:
    367: #include <petscsys.h>
    368:     PetscBool  PetscUnlikelyDebug(PetscBool  cond)

    370:     Not Collective

    372:     Input Parameters:
    373: .   cond - condition or expression

    375:     Notes:
    376:     This returns the same truth value, it is only a hint to compilers that the resulting
    377:     branch is unlikely.  When compiled in optimized mode, it always returns false.

    379:     Level: advanced

    381: .seealso: PetscUnlikely(), CHKERRQ, SETERRQ
    382: M*/
    383: #define PetscUnlikelyDebug(cond) (PetscDefined(USE_DEBUG) && PetscUnlikely(cond))

    385: /* PetscPragmaSIMD - from CeedPragmaSIMD */

    387: #if defined(__INTEL_COMPILER) && !defined(_WIN32)
    388: #  define PetscPragmaSIMD _Pragma("vector")
    389: #elif defined(__GNUC__) && __GNUC__ >= 5 && !defined(__PGI)
    390: #  define PetscPragmaSIMD _Pragma("GCC ivdep")
    391: #elif defined(_OPENMP) && _OPENMP >= 201307 && !defined(_WIN32)
    392: #  define PetscPragmaSIMD _Pragma("omp simd")
    393: #elif defined(_OPENMP) && _OPENMP >= 201307 && defined(_WIN32)
    394: #  define PetscPragmaSIMD __pragma(omp simd)
    395: #elif defined(PETSC_HAVE_CRAY_VECTOR)
    396: #  define PetscPragmaSIMD _Pragma("_CRI ivdep")
    397: #else
    398: #  define PetscPragmaSIMD
    399: #endif

    401: /*
    402:     Declare extern C stuff after including external header files
    403: */

    405: PETSC_EXTERN const char *const PetscBools[];

    407: /*
    408:     Defines elementary mathematics functions and constants.
    409: */
    410: #include <petscmath.h>

    412: PETSC_EXTERN const char *const PetscCopyModes[];

    414: /*MC
    415:     PETSC_IGNORE - same as NULL, means PETSc will ignore this argument

    417:    Level: beginner

    419:    Note:
    420:    Accepted by many PETSc functions to not set a parameter and instead use
    421:           some default

    423:    Fortran Notes:
    424:    This macro does not exist in Fortran; you must use PETSC_NULL_INTEGER,
    425:           PETSC_NULL_DOUBLE_PRECISION etc

    427: .seealso: PETSC_DECIDE, PETSC_DEFAULT, PETSC_DETERMINE

    429: M*/
    430: #define PETSC_IGNORE NULL

    432: /* This is deprecated */
    433: #define PETSC_NULL NULL

    435: /*MC
    436:     PETSC_DECIDE - standard way of passing in integer or floating point parameter
    437:        where you wish PETSc to use the default.

    439:    Level: beginner

    441: .seealso: PETSC_DEFAULT, PETSC_IGNORE, PETSC_DETERMINE

    443: M*/
    444: #define PETSC_DECIDE -1

    446: /*MC
    447:     PETSC_DETERMINE - standard way of passing in integer or floating point parameter
    448:        where you wish PETSc to compute the required value.

    450:    Level: beginner

    452:    Developer Note:
    453:    I would like to use const PetscInt PETSC_DETERMINE = PETSC_DECIDE; but for
    454:      some reason this is not allowed by the standard even though PETSC_DECIDE is a constant value.

    456: .seealso: PETSC_DECIDE, PETSC_DEFAULT, PETSC_IGNORE, VecSetSizes()

    458: M*/
    459: #define PETSC_DETERMINE PETSC_DECIDE

    461: /*MC
    462:     PETSC_DEFAULT - standard way of passing in integer or floating point parameter
    463:        where you wish PETSc to use the default.

    465:    Level: beginner

    467:    Fortran Notes:
    468:    You need to use PETSC_DEFAULT_INTEGER or PETSC_DEFAULT_REAL.

    470: .seealso: PETSC_DECIDE, PETSC_IGNORE, PETSC_DETERMINE

    472: M*/
    473: #define PETSC_DEFAULT -2

    475: /*MC
    476:     PETSC_COMM_WORLD - the equivalent of the MPI_COMM_WORLD communicator which represents
    477:            all the processes that PETSc knows about.

    479:    Level: beginner

    481:    Notes:
    482:    By default PETSC_COMM_WORLD and MPI_COMM_WORLD are identical unless you wish to
    483:           run PETSc on ONLY a subset of MPI_COMM_WORLD. In that case create your new (smaller)
    484:           communicator, call it, say comm, and set PETSC_COMM_WORLD = comm BEFORE calling
    485:           PetscInitialize(), but after MPI_Init() has been called.

    487:           The value of PETSC_COMM_WORLD should never be USED/accessed before PetscInitialize()
    488:           is called because it may not have a valid value yet.

    490: .seealso: PETSC_COMM_SELF

    492: M*/
    493: PETSC_EXTERN MPI_Comm PETSC_COMM_WORLD;

    495: /*MC
    496:     PETSC_COMM_SELF - This is always MPI_COMM_SELF

    498:    Level: beginner

    500:    Notes:
    501:    Do not USE/access or set this variable before PetscInitialize() has been called.

    503: .seealso: PETSC_COMM_WORLD

    505: M*/
    506: #define PETSC_COMM_SELF MPI_COMM_SELF

    508: /*MC
    509:     PETSC_MPI_THREAD_REQUIRED - the required threading support used if PETSc initializes
    510:            MPI with MPI_Init_thread.

    512:    Level: beginner

    514:    Notes:
    515:    By default PETSC_MPI_THREAD_REQUIRED equals MPI_THREAD_FUNNELED.

    517: .seealso: PetscInitialize()

    519: M*/
    520: PETSC_EXTERN PetscMPIInt PETSC_MPI_THREAD_REQUIRED;

    522: PETSC_EXTERN PetscBool PetscBeganMPI;
    523: PETSC_EXTERN PetscBool PetscErrorHandlingInitialized;
    524: PETSC_EXTERN PetscBool PetscInitializeCalled;
    525: PETSC_EXTERN PetscBool PetscFinalizeCalled;
    526: PETSC_EXTERN PetscBool PetscViennaCLSynchronize;

    528: PETSC_EXTERN PetscErrorCode PetscSetHelpVersionFunctions(PetscErrorCode (*)(MPI_Comm),PetscErrorCode (*)(MPI_Comm));
    529: PETSC_EXTERN PetscErrorCode PetscCommDuplicate(MPI_Comm,MPI_Comm*,int*);
    530: PETSC_EXTERN PetscErrorCode PetscCommDestroy(MPI_Comm*);

    532: #if defined(PETSC_HAVE_CUDA)
    533: PETSC_EXTERN PetscBool      PetscCUDASynchronize;
    534: PETSC_EXTERN PetscErrorCode PetscCUDAInitialize(MPI_Comm,PetscInt);
    535: PETSC_EXTERN PetscErrorCode PetscCUDAInitializeCheck(void);
    536: #endif

    538: #if defined(PETSC_HAVE_HIP)
    539: PETSC_EXTERN PetscBool      PetscHIPSynchronize;
    540: PETSC_EXTERN PetscErrorCode PetscHIPInitialize(MPI_Comm,PetscInt);
    541: PETSC_EXTERN PetscErrorCode PetscHIPInitializeCheck(void);
    542: #endif

    544: #if defined(PETSC_HAVE_ELEMENTAL)
    545: PETSC_EXTERN PetscErrorCode PetscElementalInitializePackage(void);
    546: PETSC_EXTERN PetscErrorCode PetscElementalInitialized(PetscBool*);
    547: PETSC_EXTERN PetscErrorCode PetscElementalFinalizePackage(void);
    548: #endif

    550: /*MC
    551:    PetscMalloc - Allocates memory, One should use PetscNew(), PetscMalloc1() or PetscCalloc1() usually instead of this

    553:    Synopsis:
    554: #include <petscsys.h>
    555:    PetscErrorCode PetscMalloc(size_t m,void **result)

    557:    Not Collective

    559:    Input Parameter:
    560: .  m - number of bytes to allocate

    562:    Output Parameter:
    563: .  result - memory allocated

    565:    Level: beginner

    567:    Notes:
    568:    Memory is always allocated at least double aligned

    570:    It is safe to allocate size 0 and pass the resulting pointer (which may or may not be NULL) to PetscFree().

    572: .seealso: PetscFree(), PetscNew()

    574: M*/
    575: #define PetscMalloc(a,b)  ((*PetscTrMalloc)((a),PETSC_FALSE,__LINE__,PETSC_FUNCTION_NAME,__FILE__,(void**)(b)))

    577: /*MC
    578:    PetscRealloc - Rellocates memory

    580:    Synopsis:
    581: #include <petscsys.h>
    582:    PetscErrorCode PetscRealloc(size_t m,void **result)

    584:    Not Collective

    586:    Input Parameters:
    587: +  m - number of bytes to allocate
    588: -  result - previous memory

    590:    Output Parameter:
    591: .  result - new memory allocated

    593:    Level: developer

    595:    Notes:
    596:    Memory is always allocated at least double aligned

    598: .seealso: PetscMalloc(), PetscFree(), PetscNew()

    600: M*/
    601: #define PetscRealloc(a,b)  ((*PetscTrRealloc)((a),__LINE__,PETSC_FUNCTION_NAME,__FILE__,(void**)(b)))

    603: /*MC
    604:    PetscAddrAlign - Rounds up an address to PETSC_MEMALIGN alignment

    606:    Synopsis:
    607: #include <petscsys.h>
    608:    void *PetscAddrAlign(void *addr)

    610:    Not Collective

    612:    Input Parameters:
    613: .  addr - address to align (any pointer type)

    615:    Level: developer

    617: .seealso: PetscMallocAlign()

    619: M*/
    620: #define PetscAddrAlign(a) (void*)((((PETSC_UINTPTR_T)(a))+(PETSC_MEMALIGN-1)) & ~(PETSC_MEMALIGN-1))

    622: /*MC
    623:    PetscMalloc1 - Allocates an array of memory aligned to PETSC_MEMALIGN

    625:    Synopsis:
    626: #include <petscsys.h>
    627:    PetscErrorCode PetscMalloc1(size_t m1,type **r1)

    629:    Not Collective

    631:    Input Parameter:
    632: .  m1 - number of elements to allocate  (may be zero)

    634:    Output Parameter:
    635: .  r1 - memory allocated

    637:    Note:
    638:    This uses the sizeof() of the memory type requested to determine the total memory to be allocated, therefore you should not
    639:          multiply the number of elements requested by the sizeof() the type. For example use
    640: $  PetscInt *id;
    641: $  PetscMalloc1(10,&id);
    642:         not
    643: $  PetscInt *id;
    644: $  PetscMalloc1(10*sizeof(PetscInt),&id);

    646:         Does not zero the memory allocated, use PetscCalloc1() to obtain memory that has been zeroed.

    648:    Level: beginner

    650: .seealso: PetscFree(), PetscNew(), PetscMalloc(), PetscCalloc1(), PetscMalloc2()

    652: M*/
    653: #define PetscMalloc1(m1,r1) PetscMallocA(1,PETSC_FALSE,__LINE__,PETSC_FUNCTION_NAME,__FILE__,(size_t)(m1)*sizeof(**(r1)),(r1))

    655: /*MC
    656:    PetscCalloc1 - Allocates a cleared (zeroed) array of memory aligned to PETSC_MEMALIGN

    658:    Synopsis:
    659: #include <petscsys.h>
    660:    PetscErrorCode PetscCalloc1(size_t m1,type **r1)

    662:    Not Collective

    664:    Input Parameter:
    665: .  m1 - number of elements to allocate in 1st chunk  (may be zero)

    667:    Output Parameter:
    668: .  r1 - memory allocated

    670:    Notes:
    671:    See PetsMalloc1() for more details on usage.

    673:    Level: beginner

    675: .seealso: PetscFree(), PetscNew(), PetscMalloc(), PetscMalloc1(), PetscCalloc2()

    677: M*/
    678: #define PetscCalloc1(m1,r1) PetscMallocA(1,PETSC_TRUE,__LINE__,PETSC_FUNCTION_NAME,__FILE__,(size_t)(m1)*sizeof(**(r1)),(r1))

    680: /*MC
    681:    PetscMalloc2 - Allocates 2 arrays of memory both aligned to PETSC_MEMALIGN

    683:    Synopsis:
    684: #include <petscsys.h>
    685:    PetscErrorCode PetscMalloc2(size_t m1,type **r1,size_t m2,type **r2)

    687:    Not Collective

    689:    Input Parameter:
    690: +  m1 - number of elements to allocate in 1st chunk  (may be zero)
    691: -  m2 - number of elements to allocate in 2nd chunk  (may be zero)

    693:    Output Parameter:
    694: +  r1 - memory allocated in first chunk
    695: -  r2 - memory allocated in second chunk

    697:    Level: developer

    699: .seealso: PetscFree(), PetscNew(), PetscMalloc(), PetscMalloc1(), PetscCalloc2()

    701: M*/
    702: #define PetscMalloc2(m1,r1,m2,r2) PetscMallocA(2,PETSC_FALSE,__LINE__,PETSC_FUNCTION_NAME,__FILE__,(size_t)(m1)*sizeof(**(r1)),(r1),(size_t)(m2)*sizeof(**(r2)),(r2))

    704: /*MC
    705:    PetscCalloc2 - Allocates 2 cleared (zeroed) arrays of memory both aligned to PETSC_MEMALIGN

    707:    Synopsis:
    708: #include <petscsys.h>
    709:    PetscErrorCode PetscCalloc2(size_t m1,type **r1,size_t m2,type **r2)

    711:    Not Collective

    713:    Input Parameter:
    714: +  m1 - number of elements to allocate in 1st chunk  (may be zero)
    715: -  m2 - number of elements to allocate in 2nd chunk  (may be zero)

    717:    Output Parameter:
    718: +  r1 - memory allocated in first chunk
    719: -  r2 - memory allocated in second chunk

    721:    Level: developer

    723: .seealso: PetscFree(), PetscNew(), PetscMalloc(), PetscCalloc1(), PetscMalloc2()

    725: M*/
    726: #define PetscCalloc2(m1,r1,m2,r2) PetscMallocA(2,PETSC_TRUE,__LINE__,PETSC_FUNCTION_NAME,__FILE__,(size_t)(m1)*sizeof(**(r1)),(r1),(size_t)(m2)*sizeof(**(r2)),(r2))

    728: /*MC
    729:    PetscMalloc3 - Allocates 3 arrays of memory, all aligned to PETSC_MEMALIGN

    731:    Synopsis:
    732: #include <petscsys.h>
    733:    PetscErrorCode PetscMalloc3(size_t m1,type **r1,size_t m2,type **r2,size_t m3,type **r3)

    735:    Not Collective

    737:    Input Parameter:
    738: +  m1 - number of elements to allocate in 1st chunk  (may be zero)
    739: .  m2 - number of elements to allocate in 2nd chunk  (may be zero)
    740: -  m3 - number of elements to allocate in 3rd chunk  (may be zero)

    742:    Output Parameter:
    743: +  r1 - memory allocated in first chunk
    744: .  r2 - memory allocated in second chunk
    745: -  r3 - memory allocated in third chunk

    747:    Level: developer

    749: .seealso: PetscFree(), PetscNew(), PetscMalloc(), PetscMalloc2(), PetscCalloc3(), PetscFree3()

    751: M*/
    752: #define PetscMalloc3(m1,r1,m2,r2,m3,r3) PetscMallocA(3,PETSC_FALSE,__LINE__,PETSC_FUNCTION_NAME,__FILE__,(size_t)(m1)*sizeof(**(r1)),(r1),(size_t)(m2)*sizeof(**(r2)),(r2),(size_t)(m3)*sizeof(**(r3)),(r3))

    754: /*MC
    755:    PetscCalloc3 - Allocates 3 cleared (zeroed) arrays of memory, all aligned to PETSC_MEMALIGN

    757:    Synopsis:
    758: #include <petscsys.h>
    759:    PetscErrorCode PetscCalloc3(size_t m1,type **r1,size_t m2,type **r2,size_t m3,type **r3)

    761:    Not Collective

    763:    Input Parameter:
    764: +  m1 - number of elements to allocate in 1st chunk  (may be zero)
    765: .  m2 - number of elements to allocate in 2nd chunk  (may be zero)
    766: -  m3 - number of elements to allocate in 3rd chunk  (may be zero)

    768:    Output Parameter:
    769: +  r1 - memory allocated in first chunk
    770: .  r2 - memory allocated in second chunk
    771: -  r3 - memory allocated in third chunk

    773:    Level: developer

    775: .seealso: PetscFree(), PetscNew(), PetscMalloc(), PetscCalloc2(), PetscMalloc3(), PetscFree3()

    777: M*/
    778: #define PetscCalloc3(m1,r1,m2,r2,m3,r3) PetscMallocA(3,PETSC_TRUE,__LINE__,PETSC_FUNCTION_NAME,__FILE__,(size_t)(m1)*sizeof(**(r1)),(r1),(size_t)(m2)*sizeof(**(r2)),(r2),(size_t)(m3)*sizeof(**(r3)),(r3))

    780: /*MC
    781:    PetscMalloc4 - Allocates 4 arrays of memory, all aligned to PETSC_MEMALIGN

    783:    Synopsis:
    784: #include <petscsys.h>
    785:    PetscErrorCode PetscMalloc4(size_t m1,type **r1,size_t m2,type **r2,size_t m3,type **r3,size_t m4,type **r4)

    787:    Not Collective

    789:    Input Parameter:
    790: +  m1 - number of elements to allocate in 1st chunk  (may be zero)
    791: .  m2 - number of elements to allocate in 2nd chunk  (may be zero)
    792: .  m3 - number of elements to allocate in 3rd chunk  (may be zero)
    793: -  m4 - number of elements to allocate in 4th chunk  (may be zero)

    795:    Output Parameter:
    796: +  r1 - memory allocated in first chunk
    797: .  r2 - memory allocated in second chunk
    798: .  r3 - memory allocated in third chunk
    799: -  r4 - memory allocated in fourth chunk

    801:    Level: developer

    803: .seealso: PetscFree(), PetscNew(), PetscMalloc(), PetscMalloc2(), PetscCalloc4(), PetscFree4()

    805: M*/
    806: #define PetscMalloc4(m1,r1,m2,r2,m3,r3,m4,r4) PetscMallocA(4,PETSC_FALSE,__LINE__,PETSC_FUNCTION_NAME,__FILE__,(size_t)(m1)*sizeof(**(r1)),(r1),(size_t)(m2)*sizeof(**(r2)),(r2),(size_t)(m3)*sizeof(**(r3)),(r3),(size_t)(m4)*sizeof(**(r4)),(r4))

    808: /*MC
    809:    PetscCalloc4 - Allocates 4 cleared (zeroed) arrays of memory, all aligned to PETSC_MEMALIGN

    811:    Synopsis:
    812: #include <petscsys.h>
    813:    PetscErrorCode PetscCalloc4(size_t m1,type **r1,size_t m2,type **r2,size_t m3,type **r3,size_t m4,type **r4)

    815:    Not Collective

    817:    Input Parameters:
    818: +  m1 - number of elements to allocate in 1st chunk  (may be zero)
    819: .  m2 - number of elements to allocate in 2nd chunk  (may be zero)
    820: .  m3 - number of elements to allocate in 3rd chunk  (may be zero)
    821: -  m4 - number of elements to allocate in 4th chunk  (may be zero)

    823:    Output Parameters:
    824: +  r1 - memory allocated in first chunk
    825: .  r2 - memory allocated in second chunk
    826: .  r3 - memory allocated in third chunk
    827: -  r4 - memory allocated in fourth chunk

    829:    Level: developer

    831: .seealso: PetscFree(), PetscNew(), PetscMalloc(), PetscMalloc2(), PetscCalloc4(), PetscFree4()

    833: M*/
    834: #define PetscCalloc4(m1,r1,m2,r2,m3,r3,m4,r4) PetscMallocA(4,PETSC_TRUE,__LINE__,PETSC_FUNCTION_NAME,__FILE__,(size_t)(m1)*sizeof(**(r1)),(r1),(size_t)(m2)*sizeof(**(r2)),(r2),(size_t)(m3)*sizeof(**(r3)),(r3),(size_t)(m4)*sizeof(**(r4)),(r4))

    836: /*MC
    837:    PetscMalloc5 - Allocates 5 arrays of memory, all aligned to PETSC_MEMALIGN

    839:    Synopsis:
    840: #include <petscsys.h>
    841:    PetscErrorCode PetscMalloc5(size_t m1,type **r1,size_t m2,type **r2,size_t m3,type **r3,size_t m4,type **r4,size_t m5,type **r5)

    843:    Not Collective

    845:    Input Parameters:
    846: +  m1 - number of elements to allocate in 1st chunk  (may be zero)
    847: .  m2 - number of elements to allocate in 2nd chunk  (may be zero)
    848: .  m3 - number of elements to allocate in 3rd chunk  (may be zero)
    849: .  m4 - number of elements to allocate in 4th chunk  (may be zero)
    850: -  m5 - number of elements to allocate in 5th chunk  (may be zero)

    852:    Output Parameters:
    853: +  r1 - memory allocated in first chunk
    854: .  r2 - memory allocated in second chunk
    855: .  r3 - memory allocated in third chunk
    856: .  r4 - memory allocated in fourth chunk
    857: -  r5 - memory allocated in fifth chunk

    859:    Level: developer

    861: .seealso: PetscFree(), PetscNew(), PetscMalloc(), PetscMalloc2(), PetscCalloc5(), PetscFree5()

    863: M*/
    864: #define PetscMalloc5(m1,r1,m2,r2,m3,r3,m4,r4,m5,r5) PetscMallocA(5,PETSC_FALSE,__LINE__,PETSC_FUNCTION_NAME,__FILE__,(size_t)(m1)*sizeof(**(r1)),(r1),(size_t)(m2)*sizeof(**(r2)),(r2),(size_t)(m3)*sizeof(**(r3)),(r3),(size_t)(m4)*sizeof(**(r4)),(r4),(size_t)(m5)*sizeof(**(r5)),(r5))

    866: /*MC
    867:    PetscCalloc5 - Allocates 5 cleared (zeroed) arrays of memory, all aligned to PETSC_MEMALIGN

    869:    Synopsis:
    870: #include <petscsys.h>
    871:    PetscErrorCode PetscCalloc5(size_t m1,type **r1,size_t m2,type **r2,size_t m3,type **r3,size_t m4,type **r4,size_t m5,type **r5)

    873:    Not Collective

    875:    Input Parameters:
    876: +  m1 - number of elements to allocate in 1st chunk  (may be zero)
    877: .  m2 - number of elements to allocate in 2nd chunk  (may be zero)
    878: .  m3 - number of elements to allocate in 3rd chunk  (may be zero)
    879: .  m4 - number of elements to allocate in 4th chunk  (may be zero)
    880: -  m5 - number of elements to allocate in 5th chunk  (may be zero)

    882:    Output Parameters:
    883: +  r1 - memory allocated in first chunk
    884: .  r2 - memory allocated in second chunk
    885: .  r3 - memory allocated in third chunk
    886: .  r4 - memory allocated in fourth chunk
    887: -  r5 - memory allocated in fifth chunk

    889:    Level: developer

    891: .seealso: PetscFree(), PetscNew(), PetscMalloc(), PetscMalloc5(), PetscFree5()

    893: M*/
    894: #define PetscCalloc5(m1,r1,m2,r2,m3,r3,m4,r4,m5,r5) PetscMallocA(5,PETSC_TRUE,__LINE__,PETSC_FUNCTION_NAME,__FILE__,(size_t)(m1)*sizeof(**(r1)),(r1),(size_t)(m2)*sizeof(**(r2)),(r2),(size_t)(m3)*sizeof(**(r3)),(r3),(size_t)(m4)*sizeof(**(r4)),(r4),(size_t)(m5)*sizeof(**(r5)),(r5))

    896: /*MC
    897:    PetscMalloc6 - Allocates 6 arrays of memory, all aligned to PETSC_MEMALIGN

    899:    Synopsis:
    900: #include <petscsys.h>
    901:    PetscErrorCode PetscMalloc6(size_t m1,type **r1,size_t m2,type **r2,size_t m3,type **r3,size_t m4,type **r4,size_t m5,type **r5,size_t m6,type **r6)

    903:    Not Collective

    905:    Input Parameters:
    906: +  m1 - number of elements to allocate in 1st chunk  (may be zero)
    907: .  m2 - number of elements to allocate in 2nd chunk  (may be zero)
    908: .  m3 - number of elements to allocate in 3rd chunk  (may be zero)
    909: .  m4 - number of elements to allocate in 4th chunk  (may be zero)
    910: .  m5 - number of elements to allocate in 5th chunk  (may be zero)
    911: -  m6 - number of elements to allocate in 6th chunk  (may be zero)

    913:    Output Parameteasr:
    914: +  r1 - memory allocated in first chunk
    915: .  r2 - memory allocated in second chunk
    916: .  r3 - memory allocated in third chunk
    917: .  r4 - memory allocated in fourth chunk
    918: .  r5 - memory allocated in fifth chunk
    919: -  r6 - memory allocated in sixth chunk

    921:    Level: developer

    923: .seealso: PetscFree(), PetscNew(), PetscMalloc(), PetscMalloc2(), PetscCalloc6(), PetscFree3(), PetscFree4(), PetscFree5(), PetscFree6()

    925: M*/
    926: #define PetscMalloc6(m1,r1,m2,r2,m3,r3,m4,r4,m5,r5,m6,r6) PetscMallocA(6,PETSC_FALSE,__LINE__,PETSC_FUNCTION_NAME,__FILE__,(size_t)(m1)*sizeof(**(r1)),(r1),(size_t)(m2)*sizeof(**(r2)),(r2),(size_t)(m3)*sizeof(**(r3)),(r3),(size_t)(m4)*sizeof(**(r4)),(r4),(size_t)(m5)*sizeof(**(r5)),(r5),(size_t)(m6)*sizeof(**(r6)),(r6))

    928: /*MC
    929:    PetscCalloc6 - Allocates 6 cleared (zeroed) arrays of memory, all aligned to PETSC_MEMALIGN

    931:    Synopsis:
    932: #include <petscsys.h>
    933:    PetscErrorCode PetscCalloc6(size_t m1,type **r1,size_t m2,type **r2,size_t m3,type **r3,size_t m4,type **r4,size_t m5,type **r5,size_t m6,type **r6)

    935:    Not Collective

    937:    Input Parameters:
    938: +  m1 - number of elements to allocate in 1st chunk  (may be zero)
    939: .  m2 - number of elements to allocate in 2nd chunk  (may be zero)
    940: .  m3 - number of elements to allocate in 3rd chunk  (may be zero)
    941: .  m4 - number of elements to allocate in 4th chunk  (may be zero)
    942: .  m5 - number of elements to allocate in 5th chunk  (may be zero)
    943: -  m6 - number of elements to allocate in 6th chunk  (may be zero)

    945:    Output Parameters:
    946: +  r1 - memory allocated in first chunk
    947: .  r2 - memory allocated in second chunk
    948: .  r3 - memory allocated in third chunk
    949: .  r4 - memory allocated in fourth chunk
    950: .  r5 - memory allocated in fifth chunk
    951: -  r6 - memory allocated in sixth chunk

    953:    Level: developer

    955: .seealso: PetscFree(), PetscNew(), PetscMalloc(), PetscMalloc2(), PetscMalloc6(), PetscFree6()

    957: M*/
    958: #define PetscCalloc6(m1,r1,m2,r2,m3,r3,m4,r4,m5,r5,m6,r6) PetscMallocA(6,PETSC_TRUE,__LINE__,PETSC_FUNCTION_NAME,__FILE__,(size_t)(m1)*sizeof(**(r1)),(r1),(size_t)(m2)*sizeof(**(r2)),(r2),(size_t)(m3)*sizeof(**(r3)),(r3),(size_t)(m4)*sizeof(**(r4)),(r4),(size_t)(m5)*sizeof(**(r5)),(r5),(size_t)(m6)*sizeof(**(r6)),(r6))

    960: /*MC
    961:    PetscMalloc7 - Allocates 7 arrays of memory, all aligned to PETSC_MEMALIGN

    963:    Synopsis:
    964: #include <petscsys.h>
    965:    PetscErrorCode PetscMalloc7(size_t m1,type **r1,size_t m2,type **r2,size_t m3,type **r3,size_t m4,type **r4,size_t m5,type **r5,size_t m6,type **r6,size_t m7,type **r7)

    967:    Not Collective

    969:    Input Parameters:
    970: +  m1 - number of elements to allocate in 1st chunk  (may be zero)
    971: .  m2 - number of elements to allocate in 2nd chunk  (may be zero)
    972: .  m3 - number of elements to allocate in 3rd chunk  (may be zero)
    973: .  m4 - number of elements to allocate in 4th chunk  (may be zero)
    974: .  m5 - number of elements to allocate in 5th chunk  (may be zero)
    975: .  m6 - number of elements to allocate in 6th chunk  (may be zero)
    976: -  m7 - number of elements to allocate in 7th chunk  (may be zero)

    978:    Output Parameters:
    979: +  r1 - memory allocated in first chunk
    980: .  r2 - memory allocated in second chunk
    981: .  r3 - memory allocated in third chunk
    982: .  r4 - memory allocated in fourth chunk
    983: .  r5 - memory allocated in fifth chunk
    984: .  r6 - memory allocated in sixth chunk
    985: -  r7 - memory allocated in seventh chunk

    987:    Level: developer

    989: .seealso: PetscFree(), PetscNew(), PetscMalloc(), PetscMalloc2(), PetscCalloc7(), PetscFree7()

    991: M*/
    992: #define PetscMalloc7(m1,r1,m2,r2,m3,r3,m4,r4,m5,r5,m6,r6,m7,r7) PetscMallocA(7,PETSC_FALSE,__LINE__,PETSC_FUNCTION_NAME,__FILE__,(size_t)(m1)*sizeof(**(r1)),(r1),(size_t)(m2)*sizeof(**(r2)),(r2),(size_t)(m3)*sizeof(**(r3)),(r3),(size_t)(m4)*sizeof(**(r4)),(r4),(size_t)(m5)*sizeof(**(r5)),(r5),(size_t)(m6)*sizeof(**(r6)),(r6),(size_t)(m7)*sizeof(**(r7)),(r7))

    994: /*MC
    995:    PetscCalloc7 - Allocates 7 cleared (zeroed) arrays of memory, all aligned to PETSC_MEMALIGN

    997:    Synopsis:
    998: #include <petscsys.h>
    999:    PetscErrorCode PetscCalloc7(size_t m1,type **r1,size_t m2,type **r2,size_t m3,type **r3,size_t m4,type **r4,size_t m5,type **r5,size_t m6,type **r6,size_t m7,type **r7)

    1001:    Not Collective

    1003:    Input Parameters:
    1004: +  m1 - number of elements to allocate in 1st chunk  (may be zero)
    1005: .  m2 - number of elements to allocate in 2nd chunk  (may be zero)
    1006: .  m3 - number of elements to allocate in 3rd chunk  (may be zero)
    1007: .  m4 - number of elements to allocate in 4th chunk  (may be zero)
    1008: .  m5 - number of elements to allocate in 5th chunk  (may be zero)
    1009: .  m6 - number of elements to allocate in 6th chunk  (may be zero)
    1010: -  m7 - number of elements to allocate in 7th chunk  (may be zero)

    1012:    Output Parameters:
    1013: +  r1 - memory allocated in first chunk
    1014: .  r2 - memory allocated in second chunk
    1015: .  r3 - memory allocated in third chunk
    1016: .  r4 - memory allocated in fourth chunk
    1017: .  r5 - memory allocated in fifth chunk
    1018: .  r6 - memory allocated in sixth chunk
    1019: -  r7 - memory allocated in seventh chunk

    1021:    Level: developer

    1023: .seealso: PetscFree(), PetscNew(), PetscMalloc(), PetscMalloc2(), PetscMalloc7(), PetscFree7()

    1025: M*/
    1026: #define PetscCalloc7(m1,r1,m2,r2,m3,r3,m4,r4,m5,r5,m6,r6,m7,r7) PetscMallocA(7,PETSC_TRUE,__LINE__,PETSC_FUNCTION_NAME,__FILE__,(size_t)(m1)*sizeof(**(r1)),(r1),(size_t)(m2)*sizeof(**(r2)),(r2),(size_t)(m3)*sizeof(**(r3)),(r3),(size_t)(m4)*sizeof(**(r4)),(r4),(size_t)(m5)*sizeof(**(r5)),(r5),(size_t)(m6)*sizeof(**(r6)),(r6),(size_t)(m7)*sizeof(**(r7)),(r7))

    1028: /*MC
    1029:    PetscNew - Allocates memory of a particular type, zeros the memory! Aligned to PETSC_MEMALIGN

    1031:    Synopsis:
    1032: #include <petscsys.h>
    1033:    PetscErrorCode PetscNew(type **result)

    1035:    Not Collective

    1037:    Output Parameter:
    1038: .  result - memory allocated, sized to match pointer type

    1040:    Level: beginner

    1042: .seealso: PetscFree(), PetscMalloc(), PetscNewLog(), PetscCalloc1(), PetscMalloc1()

    1044: M*/
    1045: #define PetscNew(b)      PetscCalloc1(1,(b))

    1047: /*MC
    1048:    PetscNewLog - Allocates memory of a type matching pointer, zeros the memory! Aligned to PETSC_MEMALIGN. Associates the memory allocated
    1049:          with the given object using PetscLogObjectMemory().

    1051:    Synopsis:
    1052: #include <petscsys.h>
    1053:    PetscErrorCode PetscNewLog(PetscObject obj,type **result)

    1055:    Not Collective

    1057:    Input Parameter:
    1058: .  obj - object memory is logged to

    1060:    Output Parameter:
    1061: .  result - memory allocated, sized to match pointer type

    1063:    Level: developer

    1065: .seealso: PetscFree(), PetscMalloc(), PetscNew(), PetscLogObjectMemory(), PetscCalloc1(), PetscMalloc1()

    1067: M*/
    1068: #define PetscNewLog(o,b) (PetscNew((b)) || PetscLogObjectMemory((PetscObject)o,sizeof(**(b))))

    1070: /*MC
    1071:    PetscFree - Frees memory

    1073:    Synopsis:
    1074: #include <petscsys.h>
    1075:    PetscErrorCode PetscFree(void *memory)

    1077:    Not Collective

    1079:    Input Parameter:
    1080: .   memory - memory to free (the pointer is ALWAYS set to NULL upon success)

    1082:    Level: beginner

    1084:    Notes:
    1085:    Do not free memory obtained with PetscMalloc2(), PetscCalloc2() etc, they must be freed with PetscFree2() etc.

    1087:    It is safe to call PetscFree() on a NULL pointer.

    1089: .seealso: PetscNew(), PetscMalloc(), PetscNewLog(), PetscMalloc1(), PetscCalloc1()

    1091: M*/
    1092: #define PetscFree(a)   ((*PetscTrFree)((void*)(a),__LINE__,PETSC_FUNCTION_NAME,__FILE__) || ((a) = NULL,0))

    1094: /*MC
    1095:    PetscFree2 - Frees 2 chunks of memory obtained with PetscMalloc2()

    1097:    Synopsis:
    1098: #include <petscsys.h>
    1099:    PetscErrorCode PetscFree2(void *memory1,void *memory2)

    1101:    Not Collective

    1103:    Input Parameters:
    1104: +   memory1 - memory to free
    1105: -   memory2 - 2nd memory to free

    1107:    Level: developer

    1109:    Notes:
    1110:     Memory must have been obtained with PetscMalloc2()

    1112: .seealso: PetscNew(), PetscMalloc(), PetscMalloc2(), PetscFree()

    1114: M*/
    1115: #define PetscFree2(m1,m2)   PetscFreeA(2,__LINE__,PETSC_FUNCTION_NAME,__FILE__,&(m1),&(m2))

    1117: /*MC
    1118:    PetscFree3 - Frees 3 chunks of memory obtained with PetscMalloc3()

    1120:    Synopsis:
    1121: #include <petscsys.h>
    1122:    PetscErrorCode PetscFree3(void *memory1,void *memory2,void *memory3)

    1124:    Not Collective

    1126:    Input Parameters:
    1127: +   memory1 - memory to free
    1128: .   memory2 - 2nd memory to free
    1129: -   memory3 - 3rd memory to free

    1131:    Level: developer

    1133:    Notes:
    1134:     Memory must have been obtained with PetscMalloc3()

    1136: .seealso: PetscNew(), PetscMalloc(), PetscMalloc2(), PetscFree(), PetscMalloc3()

    1138: M*/
    1139: #define PetscFree3(m1,m2,m3)   PetscFreeA(3,__LINE__,PETSC_FUNCTION_NAME,__FILE__,&(m1),&(m2),&(m3))

    1141: /*MC
    1142:    PetscFree4 - Frees 4 chunks of memory obtained with PetscMalloc4()

    1144:    Synopsis:
    1145: #include <petscsys.h>
    1146:    PetscErrorCode PetscFree4(void *m1,void *m2,void *m3,void *m4)

    1148:    Not Collective

    1150:    Input Parameters:
    1151: +   m1 - memory to free
    1152: .   m2 - 2nd memory to free
    1153: .   m3 - 3rd memory to free
    1154: -   m4 - 4th memory to free

    1156:    Level: developer

    1158:    Notes:
    1159:     Memory must have been obtained with PetscMalloc4()

    1161: .seealso: PetscNew(), PetscMalloc(), PetscMalloc2(), PetscFree(), PetscMalloc3(), PetscMalloc4()

    1163: M*/
    1164: #define PetscFree4(m1,m2,m3,m4)   PetscFreeA(4,__LINE__,PETSC_FUNCTION_NAME,__FILE__,&(m1),&(m2),&(m3),&(m4))

    1166: /*MC
    1167:    PetscFree5 - Frees 5 chunks of memory obtained with PetscMalloc5()

    1169:    Synopsis:
    1170: #include <petscsys.h>
    1171:    PetscErrorCode PetscFree5(void *m1,void *m2,void *m3,void *m4,void *m5)

    1173:    Not Collective

    1175:    Input Parameters:
    1176: +   m1 - memory to free
    1177: .   m2 - 2nd memory to free
    1178: .   m3 - 3rd memory to free
    1179: .   m4 - 4th memory to free
    1180: -   m5 - 5th memory to free

    1182:    Level: developer

    1184:    Notes:
    1185:     Memory must have been obtained with PetscMalloc5()

    1187: .seealso: PetscNew(), PetscMalloc(), PetscMalloc2(), PetscFree(), PetscMalloc3(), PetscMalloc4(), PetscMalloc5()

    1189: M*/
    1190: #define PetscFree5(m1,m2,m3,m4,m5)   PetscFreeA(5,__LINE__,PETSC_FUNCTION_NAME,__FILE__,&(m1),&(m2),&(m3),&(m4),&(m5))

    1192: /*MC
    1193:    PetscFree6 - Frees 6 chunks of memory obtained with PetscMalloc6()

    1195:    Synopsis:
    1196: #include <petscsys.h>
    1197:    PetscErrorCode PetscFree6(void *m1,void *m2,void *m3,void *m4,void *m5,void *m6)

    1199:    Not Collective

    1201:    Input Parameters:
    1202: +   m1 - memory to free
    1203: .   m2 - 2nd memory to free
    1204: .   m3 - 3rd memory to free
    1205: .   m4 - 4th memory to free
    1206: .   m5 - 5th memory to free
    1207: -   m6 - 6th memory to free

    1210:    Level: developer

    1212:    Notes:
    1213:     Memory must have been obtained with PetscMalloc6()

    1215: .seealso: PetscNew(), PetscMalloc(), PetscMalloc2(), PetscFree(), PetscMalloc3(), PetscMalloc4(), PetscMalloc5(), PetscMalloc6()

    1217: M*/
    1218: #define PetscFree6(m1,m2,m3,m4,m5,m6)   PetscFreeA(6,__LINE__,PETSC_FUNCTION_NAME,__FILE__,&(m1),&(m2),&(m3),&(m4),&(m5),&(m6))

    1220: /*MC
    1221:    PetscFree7 - Frees 7 chunks of memory obtained with PetscMalloc7()

    1223:    Synopsis:
    1224: #include <petscsys.h>
    1225:    PetscErrorCode PetscFree7(void *m1,void *m2,void *m3,void *m4,void *m5,void *m6,void *m7)

    1227:    Not Collective

    1229:    Input Parameters:
    1230: +   m1 - memory to free
    1231: .   m2 - 2nd memory to free
    1232: .   m3 - 3rd memory to free
    1233: .   m4 - 4th memory to free
    1234: .   m5 - 5th memory to free
    1235: .   m6 - 6th memory to free
    1236: -   m7 - 7th memory to free

    1239:    Level: developer

    1241:    Notes:
    1242:     Memory must have been obtained with PetscMalloc7()

    1244: .seealso: PetscNew(), PetscMalloc(), PetscMalloc2(), PetscFree(), PetscMalloc3(), PetscMalloc4(), PetscMalloc5(), PetscMalloc6(),
    1245:           PetscMalloc7()

    1247: M*/
    1248: #define PetscFree7(m1,m2,m3,m4,m5,m6,m7)   PetscFreeA(7,__LINE__,PETSC_FUNCTION_NAME,__FILE__,&(m1),&(m2),&(m3),&(m4),&(m5),&(m6),&(m7))

    1250: PETSC_EXTERN PetscErrorCode PetscMallocA(int,PetscBool,int,const char *,const char *,size_t,void *,...);
    1251: PETSC_EXTERN PetscErrorCode PetscFreeA(int,int,const char *,const char *,void *,...);
    1252: PETSC_EXTERN PetscErrorCode (*PetscTrMalloc)(size_t,PetscBool,int,const char[],const char[],void**);
    1253: PETSC_EXTERN PetscErrorCode (*PetscTrFree)(void*,int,const char[],const char[]);
    1254: PETSC_EXTERN PetscErrorCode (*PetscTrRealloc)(size_t,int,const char[],const char[],void**);
    1255: PETSC_EXTERN PetscErrorCode PetscMallocSetCoalesce(PetscBool);
    1256: PETSC_EXTERN PetscErrorCode PetscMallocSet(PetscErrorCode (*)(size_t,PetscBool,int,const char[],const char[],void**),PetscErrorCode (*)(void*,int,const char[],const char[]),PetscErrorCode (*)(size_t,int,const char[],const char[], void **));
    1257: PETSC_EXTERN PetscErrorCode PetscMallocClear(void);

    1259: /*
    1260:   Unlike PetscMallocSet and PetscMallocClear which overwrite the existing settings, these two functions save the previous choice of allocator, and should be used in pair.
    1261: */
    1262: PETSC_EXTERN PetscErrorCode PetscMallocSetDRAM(void);
    1263: PETSC_EXTERN PetscErrorCode PetscMallocResetDRAM(void);
    1264: #if defined(PETSC_HAVE_CUDA)
    1265: PETSC_EXTERN PetscErrorCode PetscMallocSetCUDAHost(void);
    1266: PETSC_EXTERN PetscErrorCode PetscMallocResetCUDAHost(void);
    1267: #endif

    1269: #define MPIU_PETSCLOGDOUBLE  MPI_DOUBLE
    1270: #define MPIU_2PETSCLOGDOUBLE MPI_2DOUBLE_PRECISION

    1272: /*
    1273:    Routines for tracing memory corruption/bleeding with default PETSc memory allocation
    1274: */
    1275: PETSC_EXTERN PetscErrorCode PetscMallocDump(FILE *);
    1276: PETSC_EXTERN PetscErrorCode PetscMallocView(FILE *);
    1277: PETSC_EXTERN PetscErrorCode PetscMallocGetCurrentUsage(PetscLogDouble *);
    1278: PETSC_EXTERN PetscErrorCode PetscMallocGetMaximumUsage(PetscLogDouble *);
    1279: PETSC_EXTERN PetscErrorCode PetscMallocPushMaximumUsage(int);
    1280: PETSC_EXTERN PetscErrorCode PetscMallocPopMaximumUsage(int,PetscLogDouble*);
    1281: PETSC_EXTERN PetscErrorCode PetscMallocSetDebug(PetscBool,PetscBool);
    1282: PETSC_EXTERN PetscErrorCode PetscMallocGetDebug(PetscBool*,PetscBool*,PetscBool*);
    1283: PETSC_EXTERN PetscErrorCode PetscMallocValidate(int,const char[],const char[]);
    1284: PETSC_EXTERN PetscErrorCode PetscMallocViewSet(PetscLogDouble);
    1285: PETSC_EXTERN PetscErrorCode PetscMallocViewGet(PetscBool*);
    1286: PETSC_EXTERN PetscErrorCode PetscMallocLogRequestedSizeSet(PetscBool);
    1287: PETSC_EXTERN PetscErrorCode PetscMallocLogRequestedSizeGet(PetscBool*);

    1289: PETSC_EXTERN const char *const PetscDataTypes[];
    1290: PETSC_EXTERN PetscErrorCode PetscDataTypeToMPIDataType(PetscDataType,MPI_Datatype*);
    1291: PETSC_EXTERN PetscErrorCode PetscMPIDataTypeToPetscDataType(MPI_Datatype,PetscDataType*);
    1292: PETSC_EXTERN PetscErrorCode PetscDataTypeGetSize(PetscDataType,size_t*);
    1293: PETSC_EXTERN PetscErrorCode PetscDataTypeFromString(const char*,PetscDataType*,PetscBool*);

    1295: /*
    1296:     Basic memory and string operations. These are usually simple wrappers
    1297:    around the basic Unix system calls, but a few of them have additional
    1298:    functionality and/or error checking.
    1299: */
    1300: PETSC_EXTERN PetscErrorCode PetscMemcmp(const void*,const void*,size_t,PetscBool  *);
    1301: PETSC_EXTERN PetscErrorCode PetscStrlen(const char[],size_t*);
    1302: PETSC_EXTERN PetscErrorCode PetscStrToArray(const char[],char,int*,char ***);
    1303: PETSC_EXTERN PetscErrorCode PetscStrToArrayDestroy(int,char **);
    1304: PETSC_EXTERN PetscErrorCode PetscStrcmp(const char[],const char[],PetscBool  *);
    1305: PETSC_EXTERN PetscErrorCode PetscStrgrt(const char[],const char[],PetscBool  *);
    1306: PETSC_EXTERN PetscErrorCode PetscStrcasecmp(const char[],const char[],PetscBool *);
    1307: PETSC_EXTERN PetscErrorCode PetscStrncmp(const char[],const char[],size_t,PetscBool *);
    1308: PETSC_EXTERN PetscErrorCode PetscStrcpy(char[],const char[]);
    1309: PETSC_EXTERN PetscErrorCode PetscStrcat(char[],const char[]);
    1310: PETSC_EXTERN PetscErrorCode PetscStrlcat(char[],const char[],size_t);
    1311: PETSC_EXTERN PetscErrorCode PetscStrncpy(char[],const char[],size_t);
    1312: PETSC_EXTERN PetscErrorCode PetscStrchr(const char[],char,char *[]);
    1313: PETSC_EXTERN PetscErrorCode PetscStrtolower(char[]);
    1314: PETSC_EXTERN PetscErrorCode PetscStrtoupper(char[]);
    1315: PETSC_EXTERN PetscErrorCode PetscStrrchr(const char[],char,char *[]);
    1316: PETSC_EXTERN PetscErrorCode PetscStrstr(const char[],const char[],char *[]);
    1317: PETSC_EXTERN PetscErrorCode PetscStrrstr(const char[],const char[],char *[]);
    1318: PETSC_EXTERN PetscErrorCode PetscStrendswith(const char[],const char[],PetscBool*);
    1319: PETSC_EXTERN PetscErrorCode PetscStrbeginswith(const char[],const char[],PetscBool*);
    1320: PETSC_EXTERN PetscErrorCode PetscStrendswithwhich(const char[],const char *const*,PetscInt*);
    1321: PETSC_EXTERN PetscErrorCode PetscStrallocpy(const char[],char *[]);
    1322: PETSC_EXTERN PetscErrorCode PetscStrArrayallocpy(const char *const*,char***);
    1323: PETSC_EXTERN PetscErrorCode PetscStrArrayDestroy(char***);
    1324: PETSC_EXTERN PetscErrorCode PetscStrNArrayallocpy(PetscInt,const char *const*,char***);
    1325: PETSC_EXTERN PetscErrorCode PetscStrNArrayDestroy(PetscInt,char***);
    1326: PETSC_EXTERN PetscErrorCode PetscStrreplace(MPI_Comm,const char[],char[],size_t);

    1328: PETSC_EXTERN void PetscStrcmpNoError(const char[],const char[],PetscBool  *);

    1330: PETSC_EXTERN PetscErrorCode PetscTokenCreate(const char[],const char,PetscToken*);
    1331: PETSC_EXTERN PetscErrorCode PetscTokenFind(PetscToken,char *[]);
    1332: PETSC_EXTERN PetscErrorCode PetscTokenDestroy(PetscToken*);

    1334: PETSC_EXTERN PetscErrorCode PetscStrInList(const char[],const char[],char,PetscBool*);
    1335: PETSC_EXTERN PetscErrorCode PetscEListFind(PetscInt,const char *const*,const char*,PetscInt*,PetscBool*);
    1336: PETSC_EXTERN PetscErrorCode PetscEnumFind(const char *const*,const char*,PetscEnum*,PetscBool*);

    1338: /*
    1339:    These are MPI operations for MPI_Allreduce() etc
    1340: */
    1341: PETSC_EXTERN MPI_Op MPIU_MAXSUM_OP;
    1342: #if (defined(PETSC_HAVE_COMPLEX) && !defined(PETSC_HAVE_MPI_C_DOUBLE_COMPLEX)) || defined(PETSC_USE_REAL___FLOAT128) || defined(PETSC_USE_REAL___FP16)
    1343: PETSC_EXTERN MPI_Op MPIU_SUM;
    1344: #else
    1345: #define MPIU_SUM MPI_SUM
    1346: #endif
    1347: #if defined(PETSC_USE_REAL___FLOAT128) || defined(PETSC_USE_REAL___FP16)
    1348: PETSC_EXTERN MPI_Op MPIU_MAX;
    1349: PETSC_EXTERN MPI_Op MPIU_MIN;
    1350: #else
    1351: #define MPIU_MAX MPI_MAX
    1352: #define MPIU_MIN MPI_MIN
    1353: #endif
    1354: PETSC_EXTERN PetscErrorCode PetscMaxSum(MPI_Comm,const PetscInt[],PetscInt*,PetscInt*);

    1356: PETSC_EXTERN PetscErrorCode MPIULong_Send(void*,PetscInt,MPI_Datatype,PetscMPIInt,PetscMPIInt,MPI_Comm);
    1357: PETSC_EXTERN PetscErrorCode MPIULong_Recv(void*,PetscInt,MPI_Datatype,PetscMPIInt,PetscMPIInt,MPI_Comm);

    1359: PETSC_EXTERN const char *const PetscFileModes[];

    1361: /*
    1362:     Defines PETSc error handling.
    1363: */
    1364: #include <petscerror.h>

    1366: #define PETSC_SMALLEST_CLASSID  1211211
    1367: PETSC_EXTERN PetscClassId PETSC_LARGEST_CLASSID;
    1368: PETSC_EXTERN PetscClassId PETSC_OBJECT_CLASSID;
    1369: PETSC_EXTERN PetscErrorCode PetscClassIdRegister(const char[],PetscClassId *);
    1370: PETSC_EXTERN PetscErrorCode PetscObjectGetId(PetscObject,PetscObjectId*);
    1371: PETSC_EXTERN PetscErrorCode PetscObjectCompareId(PetscObject,PetscObjectId,PetscBool*);

    1374: /*
    1375:    Routines that get memory usage information from the OS
    1376: */
    1377: PETSC_EXTERN PetscErrorCode PetscMemoryGetCurrentUsage(PetscLogDouble *);
    1378: PETSC_EXTERN PetscErrorCode PetscMemoryGetMaximumUsage(PetscLogDouble *);
    1379: PETSC_EXTERN PetscErrorCode PetscMemorySetGetMaximumUsage(void);
    1380: PETSC_EXTERN PetscErrorCode PetscMemoryTrace(const char[]);

    1382: PETSC_EXTERN PetscErrorCode PetscSleep(PetscReal);

    1384: /*
    1385:    Initialization of PETSc
    1386: */
    1387: PETSC_EXTERN PetscErrorCode PetscInitialize(int*,char***,const char[],const char[]);
    1388: PETSC_EXTERN PetscErrorCode PetscInitializeNoPointers(int,char**,const char[],const char[]);
    1389: PETSC_EXTERN PetscErrorCode PetscInitializeNoArguments(void);
    1390: PETSC_EXTERN PetscErrorCode PetscInitialized(PetscBool *);
    1391: PETSC_EXTERN PetscErrorCode PetscFinalized(PetscBool *);
    1392: PETSC_EXTERN PetscErrorCode PetscFinalize(void);
    1393: PETSC_EXTERN PetscErrorCode PetscInitializeFortran(void);
    1394: PETSC_EXTERN PetscErrorCode PetscGetArgs(int*,char ***);
    1395: PETSC_EXTERN PetscErrorCode PetscGetArguments(char ***);
    1396: PETSC_EXTERN PetscErrorCode PetscFreeArguments(char **);

    1398: PETSC_EXTERN PetscErrorCode PetscEnd(void);
    1399: PETSC_EXTERN PetscErrorCode PetscSysInitializePackage(void);

    1401: PETSC_EXTERN PetscErrorCode PetscPythonInitialize(const char[],const char[]);
    1402: PETSC_EXTERN PetscErrorCode PetscPythonFinalize(void);
    1403: PETSC_EXTERN PetscErrorCode PetscPythonPrintError(void);
    1404: PETSC_EXTERN PetscErrorCode PetscPythonMonitorSet(PetscObject,const char[]);

    1406: PETSC_EXTERN PetscErrorCode PetscMonitorCompare(PetscErrorCode (*)(void),void *,PetscErrorCode (*)(void**),PetscErrorCode (*)(void),void *,PetscErrorCode (*)(void**),PetscBool *);

    1409: /*
    1410:      These are so that in extern C code we can caste function pointers to non-extern C
    1411:    function pointers. Since the regular C++ code expects its function pointers to be C++
    1412: */
    1413: PETSC_EXTERN_TYPEDEF typedef void (**PetscVoidStarFunction)(void);
    1414: PETSC_EXTERN_TYPEDEF typedef void (*PetscVoidFunction)(void);
    1415: PETSC_EXTERN_TYPEDEF typedef PetscErrorCode (*PetscErrorCodeFunction)(void);

    1417: /*
    1418:     Functions that can act on any PETSc object.
    1419: */
    1420: PETSC_EXTERN PetscErrorCode PetscObjectDestroy(PetscObject*);
    1421: PETSC_EXTERN PetscErrorCode PetscObjectGetComm(PetscObject,MPI_Comm *);
    1422: PETSC_EXTERN PetscErrorCode PetscObjectGetClassId(PetscObject,PetscClassId *);
    1423: PETSC_EXTERN PetscErrorCode PetscObjectGetClassName(PetscObject,const char *[]);
    1424: PETSC_EXTERN PetscErrorCode PetscObjectSetType(PetscObject,const char []);
    1425: PETSC_EXTERN PetscErrorCode PetscObjectGetType(PetscObject,const char *[]);
    1426: PETSC_EXTERN PetscErrorCode PetscObjectSetName(PetscObject,const char[]);
    1427: PETSC_EXTERN PetscErrorCode PetscObjectGetName(PetscObject,const char*[]);
    1428: PETSC_EXTERN PetscErrorCode PetscObjectSetTabLevel(PetscObject,PetscInt);
    1429: PETSC_EXTERN PetscErrorCode PetscObjectGetTabLevel(PetscObject,PetscInt*);
    1430: PETSC_EXTERN PetscErrorCode PetscObjectIncrementTabLevel(PetscObject,PetscObject,PetscInt);
    1431: PETSC_EXTERN PetscErrorCode PetscObjectReference(PetscObject);
    1432: PETSC_EXTERN PetscErrorCode PetscObjectGetReference(PetscObject,PetscInt*);
    1433: PETSC_EXTERN PetscErrorCode PetscObjectDereference(PetscObject);
    1434: PETSC_EXTERN PetscErrorCode PetscObjectGetNewTag(PetscObject,PetscMPIInt*);
    1435: PETSC_EXTERN PetscErrorCode PetscObjectCompose(PetscObject,const char[],PetscObject);
    1436: PETSC_EXTERN PetscErrorCode PetscObjectRemoveReference(PetscObject,const char[]);
    1437: PETSC_EXTERN PetscErrorCode PetscObjectQuery(PetscObject,const char[],PetscObject*);
    1438: PETSC_EXTERN PetscErrorCode PetscObjectComposeFunction_Private(PetscObject,const char[],void (*)(void));
    1439: #define PetscObjectComposeFunction(a,b,d) PetscObjectComposeFunction_Private(a,b,(PetscVoidFunction)(d))
    1440: PETSC_EXTERN PetscErrorCode PetscObjectSetFromOptions(PetscObject);
    1441: PETSC_EXTERN PetscErrorCode PetscObjectSetUp(PetscObject);
    1442: PETSC_EXTERN PetscErrorCode PetscObjectSetPrintedOptions(PetscObject);
    1443: PETSC_EXTERN PetscErrorCode PetscObjectInheritPrintedOptions(PetscObject,PetscObject);
    1444: PETSC_EXTERN PetscErrorCode PetscCommGetNewTag(MPI_Comm,PetscMPIInt*);

    1446: #include <petscviewertypes.h>
    1447: #include <petscoptions.h>

    1449: PETSC_EXTERN PetscErrorCode PetscMallocTraceSet(PetscViewer,PetscBool,PetscLogDouble);
    1450: PETSC_EXTERN PetscErrorCode PetscMallocTraceGet(PetscBool*);

    1452: PETSC_EXTERN PetscErrorCode PetscObjectsListGetGlobalNumbering(MPI_Comm,PetscInt,PetscObject*,PetscInt*,PetscInt*);

    1454: PETSC_EXTERN PetscErrorCode PetscMemoryView(PetscViewer,const char[]);
    1455: PETSC_EXTERN PetscErrorCode PetscObjectPrintClassNamePrefixType(PetscObject,PetscViewer);
    1456: PETSC_EXTERN PetscErrorCode PetscObjectView(PetscObject,PetscViewer);
    1457: #define PetscObjectQueryFunction(obj,name,fptr) PetscObjectQueryFunction_Private((obj),(name),(PetscVoidFunction*)(fptr))
    1458: PETSC_EXTERN PetscErrorCode PetscObjectQueryFunction_Private(PetscObject,const char[],void (**)(void));
    1459: PETSC_EXTERN PetscErrorCode PetscObjectSetOptionsPrefix(PetscObject,const char[]);
    1460: PETSC_EXTERN PetscErrorCode PetscObjectAppendOptionsPrefix(PetscObject,const char[]);
    1461: PETSC_EXTERN PetscErrorCode PetscObjectPrependOptionsPrefix(PetscObject,const char[]);
    1462: PETSC_EXTERN PetscErrorCode PetscObjectGetOptionsPrefix(PetscObject,const char*[]);
    1463: PETSC_EXTERN PetscErrorCode PetscObjectChangeTypeName(PetscObject,const char[]);
    1464: PETSC_EXTERN PetscErrorCode PetscObjectRegisterDestroy(PetscObject);
    1465: PETSC_EXTERN PetscErrorCode PetscObjectRegisterDestroyAll(void);
    1466: PETSC_EXTERN PetscErrorCode PetscObjectViewFromOptions(PetscObject,PetscObject,const char[]);
    1467: PETSC_EXTERN PetscErrorCode PetscObjectName(PetscObject);
    1468: PETSC_EXTERN PetscErrorCode PetscObjectTypeCompare(PetscObject,const char[],PetscBool *);
    1469: PETSC_EXTERN PetscErrorCode PetscObjectBaseTypeCompare(PetscObject,const char[],PetscBool *);
    1470: PETSC_EXTERN PetscErrorCode PetscObjectTypeCompareAny(PetscObject,PetscBool*,const char[],...);
    1471: PETSC_EXTERN PetscErrorCode PetscObjectBaseTypeCompareAny(PetscObject,PetscBool*,const char[],...);
    1472: PETSC_EXTERN PetscErrorCode PetscRegisterFinalize(PetscErrorCode (*)(void));
    1473: PETSC_EXTERN PetscErrorCode PetscRegisterFinalizeAll(void);

    1475: #if defined(PETSC_HAVE_SAWS)
    1476: PETSC_EXTERN PetscErrorCode PetscSAWsBlock(void);
    1477: PETSC_EXTERN PetscErrorCode PetscObjectSAWsViewOff(PetscObject);
    1478: PETSC_EXTERN PetscErrorCode PetscObjectSAWsSetBlock(PetscObject,PetscBool);
    1479: PETSC_EXTERN PetscErrorCode PetscObjectSAWsBlock(PetscObject);
    1480: PETSC_EXTERN PetscErrorCode PetscObjectSAWsGrantAccess(PetscObject);
    1481: PETSC_EXTERN PetscErrorCode PetscObjectSAWsTakeAccess(PetscObject);
    1482: PETSC_EXTERN void           PetscStackSAWsGrantAccess(void);
    1483: PETSC_EXTERN void           PetscStackSAWsTakeAccess(void);
    1484: PETSC_EXTERN PetscErrorCode PetscStackViewSAWs(void);
    1485: PETSC_EXTERN PetscErrorCode PetscStackSAWsViewOff(void);

    1487: #else
    1488: #define PetscSAWsBlock()                        0
    1489: #define PetscObjectSAWsViewOff(obj)             0
    1490: #define PetscObjectSAWsSetBlock(obj,flg)        0
    1491: #define PetscObjectSAWsBlock(obj)               0
    1492: #define PetscObjectSAWsGrantAccess(obj)         0
    1493: #define PetscObjectSAWsTakeAccess(obj)          0
    1494: #define PetscStackViewSAWs()                    0
    1495: #define PetscStackSAWsViewOff()                 0
    1496: #define PetscStackSAWsTakeAccess()
    1497: #define PetscStackSAWsGrantAccess()

    1499: #endif

    1501: PETSC_EXTERN PetscErrorCode PetscDLOpen(const char[],PetscDLMode,PetscDLHandle *);
    1502: PETSC_EXTERN PetscErrorCode PetscDLClose(PetscDLHandle *);
    1503: PETSC_EXTERN PetscErrorCode PetscDLSym(PetscDLHandle,const char[],void **);

    1505: #if defined(PETSC_USE_DEBUG)
    1506: PETSC_EXTERN PetscErrorCode PetscMallocGetStack(void*,PetscStack**);
    1507: #endif
    1508: PETSC_EXTERN PetscErrorCode PetscObjectsDump(FILE*,PetscBool);

    1510: PETSC_EXTERN PetscErrorCode PetscObjectListDestroy(PetscObjectList*);
    1511: PETSC_EXTERN PetscErrorCode PetscObjectListFind(PetscObjectList,const char[],PetscObject*);
    1512: PETSC_EXTERN PetscErrorCode PetscObjectListReverseFind(PetscObjectList,PetscObject,char**,PetscBool*);
    1513: PETSC_EXTERN PetscErrorCode PetscObjectListAdd(PetscObjectList *,const char[],PetscObject);
    1514: PETSC_EXTERN PetscErrorCode PetscObjectListRemoveReference(PetscObjectList *,const char[]);
    1515: PETSC_EXTERN PetscErrorCode PetscObjectListDuplicate(PetscObjectList,PetscObjectList *);

    1517: /*
    1518:     Dynamic library lists. Lists of names of routines in objects or in dynamic
    1519:   link libraries that will be loaded as needed.
    1520: */

    1522: #define PetscFunctionListAdd(list,name,fptr) PetscFunctionListAdd_Private((list),(name),(PetscVoidFunction)(fptr))
    1523: PETSC_EXTERN PetscErrorCode PetscFunctionListAdd_Private(PetscFunctionList*,const char[],void (*)(void));
    1524: PETSC_EXTERN PetscErrorCode PetscFunctionListDestroy(PetscFunctionList*);
    1525: #define PetscFunctionListFind(list,name,fptr) PetscFunctionListFind_Private((list),(name),(PetscVoidFunction*)(fptr))
    1526: PETSC_EXTERN PetscErrorCode PetscFunctionListFind_Private(PetscFunctionList,const char[],void (**)(void));
    1527: PETSC_EXTERN PetscErrorCode PetscFunctionListPrintTypes(MPI_Comm,FILE*,const char[],const char[],const char[],const char[],PetscFunctionList,const char[],const char[]);
    1528: PETSC_EXTERN PetscErrorCode PetscFunctionListDuplicate(PetscFunctionList,PetscFunctionList *);
    1529: PETSC_EXTERN PetscErrorCode PetscFunctionListView(PetscFunctionList,PetscViewer);
    1530: PETSC_EXTERN PetscErrorCode PetscFunctionListGet(PetscFunctionList,const char ***,int*);

    1532: PETSC_EXTERN PetscDLLibrary  PetscDLLibrariesLoaded;
    1533: PETSC_EXTERN PetscErrorCode PetscDLLibraryAppend(MPI_Comm,PetscDLLibrary *,const char[]);
    1534: PETSC_EXTERN PetscErrorCode PetscDLLibraryPrepend(MPI_Comm,PetscDLLibrary *,const char[]);
    1535: PETSC_EXTERN PetscErrorCode PetscDLLibrarySym(MPI_Comm,PetscDLLibrary *,const char[],const char[],void **);
    1536: PETSC_EXTERN PetscErrorCode PetscDLLibraryPrintPath(PetscDLLibrary);
    1537: PETSC_EXTERN PetscErrorCode PetscDLLibraryRetrieve(MPI_Comm,const char[],char *,size_t,PetscBool  *);
    1538: PETSC_EXTERN PetscErrorCode PetscDLLibraryOpen(MPI_Comm,const char[],PetscDLLibrary *);
    1539: PETSC_EXTERN PetscErrorCode PetscDLLibraryClose(PetscDLLibrary);

    1541: /*
    1542:      Useful utility routines
    1543: */
    1544: PETSC_EXTERN PetscErrorCode PetscSplitOwnership(MPI_Comm,PetscInt*,PetscInt*);
    1545: PETSC_EXTERN PetscErrorCode PetscSplitOwnershipBlock(MPI_Comm,PetscInt,PetscInt*,PetscInt*);
    1546: PETSC_EXTERN PetscErrorCode PetscSplitOwnershipEqual(MPI_Comm,PetscInt*,PetscInt*);
    1547: PETSC_EXTERN PetscErrorCode PetscSequentialPhaseBegin(MPI_Comm,PetscMPIInt);
    1548: PETSC_EXTERN PetscErrorCode PetscSequentialPhaseEnd(MPI_Comm,PetscMPIInt);
    1549: PETSC_EXTERN PetscErrorCode PetscBarrier(PetscObject);
    1550: PETSC_EXTERN PetscErrorCode PetscMPIDump(FILE*);
    1551: PETSC_EXTERN PetscErrorCode PetscGlobalMinMaxInt(MPI_Comm,PetscInt[],PetscInt[]);
    1552: PETSC_EXTERN PetscErrorCode PetscGlobalMinMaxReal(MPI_Comm,PetscReal[],PetscReal[]);

    1554: /*MC
    1555:     PetscNot - negates a logical type value and returns result as a PetscBool

    1557:     Notes:
    1558:     This is useful in cases like
    1559: $     int        *a;
    1560: $     PetscBool  flag = PetscNot(a)
    1561:      where !a would not return a PetscBool because we cannot provide a cast from int to PetscBool in C.

    1563:     Level: beginner

    1565:     .seealso : PetscBool, PETSC_TRUE, PETSC_FALSE
    1566: M*/
    1567: #define PetscNot(a) ((a) ? PETSC_FALSE : PETSC_TRUE)

    1569: /*MC
    1570:     PetscHelpPrintf - Prints help messages.

    1572:    Synopsis:
    1573: #include <petscsys.h>
    1574:      PetscErrorCode (*PetscHelpPrintf)(MPI_Comm comm, const char format[],args);

    1576:     Collective on comm

    1578:     Input Parameters:
    1579: +  comm - the MPI communicator over which the help message is printed
    1580: .  format - the usual printf() format string
    1581: -  args - arguments to be printed

    1583:    Level: developer

    1585:    Fortran Note:
    1586:      This routine is not supported in Fortran.

    1588:    Note:
    1589:      You can change how help messages are printed by replacing the function pointer with a function that does not simply write to stdout.

    1591:       To use, write your own function, for example,
    1592: $PetscErrorCode mypetschelpprintf(MPI_Comm comm,const char format[],....)
    1593: ${
    1594: $ return(0);
    1595: $}
    1596: then do the assigment
    1597: $    PetscHelpPrintf = mypetschelpprintf;
    1598:    You can do the assignment before PetscInitialize().

    1600:   The default routine used is called PetscHelpPrintfDefault().

    1602: .seealso: PetscFPrintf(), PetscSynchronizedPrintf(), PetscErrorPrintf()
    1603: M*/
    1604: PETSC_EXTERN PetscErrorCode (*PetscHelpPrintf)(MPI_Comm,const char[],...);

    1606: /*
    1607:      Defines PETSc profiling.
    1608: */
    1609: #include <petsclog.h>

    1611: /*
    1612:       Simple PETSc parallel IO for ASCII printing
    1613: */
    1614: PETSC_EXTERN PetscErrorCode PetscFixFilename(const char[],char[]);
    1615: PETSC_EXTERN PetscErrorCode PetscFOpen(MPI_Comm,const char[],const char[],FILE**);
    1616: PETSC_EXTERN PetscErrorCode PetscFClose(MPI_Comm,FILE*);
    1617: PETSC_EXTERN PetscErrorCode PetscFPrintf(MPI_Comm,FILE*,const char[],...);
    1618: PETSC_EXTERN PetscErrorCode PetscPrintf(MPI_Comm,const char[],...);
    1619: PETSC_EXTERN PetscErrorCode PetscSNPrintf(char*,size_t,const char [],...);
    1620: PETSC_EXTERN PetscErrorCode PetscSNPrintfCount(char*,size_t,const char [],size_t*,...);
    1621: PETSC_EXTERN PetscErrorCode PetscFormatRealArray(char[],size_t,const char*,PetscInt,const PetscReal[]);

    1623: PETSC_EXTERN PetscErrorCode PetscErrorPrintfDefault(const char [],...);
    1624: PETSC_EXTERN PetscErrorCode PetscErrorPrintfNone(const char [],...);
    1625: PETSC_EXTERN PetscErrorCode PetscHelpPrintfDefault(MPI_Comm,const char [],...);

    1627: PETSC_EXTERN PetscErrorCode PetscFormatConvertGetSize(const char*,size_t*);
    1628: PETSC_EXTERN PetscErrorCode PetscFormatConvert(const char*,char *);

    1630: #if defined(PETSC_HAVE_POPEN)
    1631: PETSC_EXTERN PetscErrorCode PetscPOpen(MPI_Comm,const char[],const char[],const char[],FILE **);
    1632: PETSC_EXTERN PetscErrorCode PetscPClose(MPI_Comm,FILE*);
    1633: PETSC_EXTERN PetscErrorCode PetscPOpenSetMachine(const char[]);
    1634: #endif

    1636: PETSC_EXTERN PetscErrorCode PetscSynchronizedPrintf(MPI_Comm,const char[],...);
    1637: PETSC_EXTERN PetscErrorCode PetscSynchronizedFPrintf(MPI_Comm,FILE*,const char[],...);
    1638: PETSC_EXTERN PetscErrorCode PetscSynchronizedFlush(MPI_Comm,FILE*);
    1639: PETSC_EXTERN PetscErrorCode PetscSynchronizedFGets(MPI_Comm,FILE*,size_t,char[]);
    1640: PETSC_EXTERN PetscErrorCode PetscStartMatlab(MPI_Comm,const char[],const char[],FILE**);
    1641: PETSC_EXTERN PetscErrorCode PetscStartJava(MPI_Comm,const char[],const char[],FILE**);
    1642: PETSC_EXTERN PetscErrorCode PetscGetPetscDir(const char*[]);

    1644: PETSC_EXTERN PetscClassId PETSC_CONTAINER_CLASSID;
    1645: PETSC_EXTERN PetscErrorCode PetscContainerGetPointer(PetscContainer,void**);
    1646: PETSC_EXTERN PetscErrorCode PetscContainerSetPointer(PetscContainer,void*);
    1647: PETSC_EXTERN PetscErrorCode PetscContainerDestroy(PetscContainer*);
    1648: PETSC_EXTERN PetscErrorCode PetscContainerCreate(MPI_Comm,PetscContainer*);
    1649: PETSC_EXTERN PetscErrorCode PetscContainerSetUserDestroy(PetscContainer,PetscErrorCode (*)(void*));
    1650: PETSC_EXTERN PetscErrorCode PetscContainerUserDestroyDefault(void*);

    1652: /*
    1653:    For use in debuggers
    1654: */
    1655: PETSC_EXTERN PetscMPIInt PetscGlobalRank;
    1656: PETSC_EXTERN PetscMPIInt PetscGlobalSize;
    1657: PETSC_EXTERN PetscErrorCode PetscIntView(PetscInt,const PetscInt[],PetscViewer);
    1658: PETSC_EXTERN PetscErrorCode PetscRealView(PetscInt,const PetscReal[],PetscViewer);
    1659: PETSC_EXTERN PetscErrorCode PetscScalarView(PetscInt,const PetscScalar[],PetscViewer);

    1661: #include <stddef.h>
    1662: #include <string.h>             /* for memcpy, memset */
    1663: #include <stdlib.h>

    1665: #if defined(PETSC_HAVE_XMMINTRIN_H) && !defined(__CUDACC__)
    1666: #include <xmmintrin.h>
    1667: #endif

    1669: /*@C
    1670:    PetscMemmove - Copies n bytes, beginning at location b, to the space
    1671:    beginning at location a. Copying  between regions that overlap will
    1672:    take place correctly. Use PetscMemcpy() if the locations do not overlap

    1674:    Not Collective

    1676:    Input Parameters:
    1677: +  b - pointer to initial memory space
    1678: .  a - pointer to copy space
    1679: -  n - length (in bytes) of space to copy

    1681:    Level: intermediate

    1683:    Note:
    1684:    PetscArraymove() is preferred
    1685:    This routine is analogous to memmove().

    1687:    Developers Note: This is inlined for performance

    1689: .seealso: PetscMemcpy(), PetscMemcmp(), PetscArrayzero(), PetscMemzero(), PetscArraycmp(), PetscArraycpy(), PetscStrallocpy(),
    1690:           PetscArraymove()
    1691: @*/
    1692: PETSC_STATIC_INLINE PetscErrorCode PetscMemmove(void *a,const void *b,size_t n)
    1693: {
    1695:   if (n > 0 && !a) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ARG_NULL,"Trying to copy to null pointer");
    1696:   if (n > 0 && !b) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ARG_NULL,"Trying to copy from a null pointer");
    1697: #if !defined(PETSC_HAVE_MEMMOVE)
    1698:   if (a < b) {
    1699:     if (a <= b - n) memcpy(a,b,n);
    1700:     else {
    1701:       memcpy(a,b,(int)(b - a));
    1702:       PetscMemmove(b,b + (int)(b - a),n - (int)(b - a));
    1703:     }
    1704:   } else {
    1705:     if (b <= a - n) memcpy(a,b,n);
    1706:     else {
    1707:       memcpy(b + n,b + (n - (int)(a - b)),(int)(a - b));
    1708:       PetscMemmove(a,b,n - (int)(a - b));
    1709:     }
    1710:   }
    1711: #else
    1712:   memmove((char*)(a),(char*)(b),n);
    1713: #endif
    1714:   return(0);
    1715: }

    1717: /*@C
    1718:    PetscMemcpy - Copies n bytes, beginning at location b, to the space
    1719:    beginning at location a. The two memory regions CANNOT overlap, use
    1720:    PetscMemmove() in that case.

    1722:    Not Collective

    1724:    Input Parameters:
    1725: +  b - pointer to initial memory space
    1726: -  n - length (in bytes) of space to copy

    1728:    Output Parameter:
    1729: .  a - pointer to copy space

    1731:    Level: intermediate

    1733:    Compile Option:
    1734:     PETSC_PREFER_DCOPY_FOR_MEMCPY will cause the BLAS dcopy() routine to be used
    1735:                                   for memory copies on double precision values.
    1736:     PETSC_PREFER_COPY_FOR_MEMCPY will cause C code to be used
    1737:                                   for memory copies on double precision values.
    1738:     PETSC_PREFER_FORTRAN_FORMEMCPY will cause Fortran code to be used
    1739:                                   for memory copies on double precision values.

    1741:    Note:
    1742:    Prefer PetscArraycpy()
    1743:    This routine is analogous to memcpy().
    1744:    Not available from Fortran

    1746:    Developer Note: this is inlined for fastest performance

    1748: .seealso: PetscMemzero(), PetscMemcmp(), PetscArrayzero(), PetscArraycmp(), PetscArraycpy(), PetscMemmove(), PetscStrallocpy()

    1750: @*/
    1751: PETSC_STATIC_INLINE PetscErrorCode PetscMemcpy(void *a,const void *b,size_t n)
    1752: {
    1753: #if defined(PETSC_USE_DEBUG)
    1754:   size_t al = (size_t) a,bl = (size_t) b;
    1755:   size_t nl = (size_t) n;
    1757:   if (n > 0 && !b) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ARG_NULL,"Trying to copy from a null pointer");
    1758:   if (n > 0 && !a) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ARG_NULL,"Trying to copy to a null pointer");
    1759: #else
    1761: #endif
    1762:   if (a != b && n > 0) {
    1763: #if defined(PETSC_USE_DEBUG)
    1764:     if ((al > bl && (al - bl) < nl) || (bl - al) < nl)  SETERRQ3(PETSC_COMM_SELF,PETSC_ERR_ARG_INCOMP,"Memory regions overlap: either use PetscMemmov()\n\
    1765:               or make sure your copy regions and lengths are correct. \n\
    1766:               Length (bytes) %ld first address %ld second address %ld",nl,al,bl);
    1767: #endif
    1768: #if (defined(PETSC_PREFER_DCOPY_FOR_MEMCPY) || defined(PETSC_PREFER_COPY_FOR_MEMCPY) || defined(PETSC_PREFER_FORTRAN_FORMEMCPY))
    1769:    if (!(a % sizeof(PetscScalar)) && !(n % sizeof(PetscScalar))) {
    1770:       size_t len = n/sizeof(PetscScalar);
    1771: #if defined(PETSC_PREFER_DCOPY_FOR_MEMCPY)
    1772:       PetscBLASInt   one = 1,blen;
    1774:       PetscBLASIntCast(len,&blen);
    1775:       PetscStackCallBLAS("BLAScopy",BLAScopy_(&blen,(PetscScalar *)b,&one,(PetscScalar *)a,&one));
    1776: #elif defined(PETSC_PREFER_FORTRAN_FORMEMCPY)
    1777:       fortrancopy_(&len,(PetscScalar*)b,(PetscScalar*)a);
    1778: #else
    1779:       size_t      i;
    1780:       PetscScalar *x = (PetscScalar*)b, *y = (PetscScalar*)a;
    1781:       for (i=0; i<len; i++) y[i] = x[i];
    1782: #endif
    1783:     } else {
    1784:       memcpy((char*)(a),(char*)(b),n);
    1785:     }
    1786: #else
    1787:     memcpy((char*)(a),(char*)(b),n);
    1788: #endif
    1789:   }
    1790:   return(0);
    1791: }

    1793: /*@C
    1794:    PetscMemzero - Zeros the specified memory.

    1796:    Not Collective

    1798:    Input Parameters:
    1799: +  a - pointer to beginning memory location
    1800: -  n - length (in bytes) of memory to initialize

    1802:    Level: intermediate

    1804:    Compile Option:
    1805:    PETSC_PREFER_BZERO - on certain machines (the IBM RS6000) the bzero() routine happens
    1806:   to be faster than the memset() routine. This flag causes the bzero() routine to be used.

    1808:    Not available from Fortran
    1809:    Prefer PetscArrayzero()

    1811:    Developer Note: this is inlined for fastest performance

    1813: .seealso: PetscMemcpy(), PetscMemcmp(), PetscArrayzero(), PetscArraycmp(), PetscArraycpy(), PetscMemmove(), PetscStrallocpy()
    1814: @*/
    1815: PETSC_STATIC_INLINE PetscErrorCode PetscMemzero(void *a,size_t n)
    1816: {
    1817:   if (n > 0) {
    1818: #if defined(PETSC_USE_DEBUG)
    1819:     if (!a) SETERRQ1(PETSC_COMM_SELF,PETSC_ERR_ARG_NULL,"Trying to zero at a null pointer with %zu bytes",n);
    1820: #endif
    1821: #if defined(PETSC_PREFER_ZERO_FOR_MEMZERO)
    1822:     if (!(((long) a) % sizeof(PetscScalar)) && !(n % sizeof(PetscScalar))) {
    1823:       size_t      i,len = n/sizeof(PetscScalar);
    1824:       PetscScalar *x = (PetscScalar*)a;
    1825:       for (i=0; i<len; i++) x[i] = 0.0;
    1826:     } else {
    1827: #elif defined(PETSC_PREFER_FORTRAN_FOR_MEMZERO)
    1828:     if (!(((long) a) % sizeof(PetscScalar)) && !(n % sizeof(PetscScalar))) {
    1829:       PetscInt len = n/sizeof(PetscScalar);
    1830:       fortranzero_(&len,(PetscScalar*)a);
    1831:     } else {
    1832: #endif
    1833: #if defined(PETSC_PREFER_BZERO)
    1834:       bzero((char *)a,n);
    1835: #else
    1836:       memset((char*)a,0,n);
    1837: #endif
    1838: #if defined(PETSC_PREFER_ZERO_FOR_MEMZERO) || defined(PETSC_PREFER_FORTRAN_FOR_MEMZERO)
    1839:     }
    1840: #endif
    1841:   }
    1842:   return 0;
    1843: }

    1845: /*MC
    1846:    PetscArraycmp - Compares two arrays in memory.

    1848:    Synopsis:
    1849: #include <petscsys.h>
    1850:     PetscErrorCode PetscArraycmp(const anytype *str1,const anytype *str2,size_t cnt,PetscBool *e)

    1852:    Not Collective

    1854:    Input Parameters:
    1855: +  str1 - First array
    1856: .  str2 - Second array
    1857: -  cnt  - Count of the array, not in bytes, but number of entries in the arrays

    1859:    Output Parameters:
    1860: .   e - PETSC_TRUE if equal else PETSC_FALSE.

    1862:    Level: intermediate

    1864:    Note:
    1865:    This routine is a preferred replacement to PetscMemcmp()
    1866:    The arrays must be of the same type

    1868: .seealso: PetscMemcpy(), PetscMemcmp(), PetscArrayzero(), PetscMemzero(), PetscArraycpy(), PetscMemmove(), PetscStrallocpy(),
    1869:           PetscArraymove()
    1870: M*/
    1871: #define  PetscArraycmp(str1,str2,cnt,e) ((sizeof(*(str1)) != sizeof(*(str2))) || PetscMemcmp(str1,str2,(size_t)(cnt)*sizeof(*(str1)),e))

    1873: /*MC
    1874:    PetscArraymove - Copies from one array in memory to another, the arrays may overlap. Use PetscArraycpy() when the arrays
    1875:                     do not overlap

    1877:    Synopsis:
    1878: #include <petscsys.h>
    1879:     PetscErrorCode PetscArraymove(anytype *str1,const anytype *str2,size_t cnt)

    1881:    Not Collective

    1883:    Input Parameters:
    1884: +  str1 - First array
    1885: .  str2 - Second array
    1886: -  cnt  - Count of the array, not in bytes, but number of entries in the arrays

    1888:    Level: intermediate

    1890:    Note:
    1891:    This routine is a preferred replacement to PetscMemmove()
    1892:    The arrays must be of the same type

    1894: .seealso: PetscMemcpy(), PetscMemcmp(), PetscArrayzero(), PetscMemzero(), PetscArraycpy(), PetscMemmove(), PetscArraycmp(), PetscStrallocpy()
    1895: M*/
    1896: #define  PetscArraymove(str1,str2,cnt) ((sizeof(*(str1)) != sizeof(*(str2))) || PetscMemmove(str1,str2,(size_t)(cnt)*sizeof(*(str1))))

    1898: /*MC
    1899:    PetscArraycpy - Copies from one array in memory to another

    1901:    Synopsis:
    1902: #include <petscsys.h>
    1903:     PetscErrorCode PetscArraycpy(anytype *str1,const anytype *str2,size_t cnt)

    1905:    Not Collective

    1907:    Input Parameters:
    1908: +  str1 - First array (destination)
    1909: .  str2 - Second array (source)
    1910: -  cnt  - Count of the array, not in bytes, but number of entries in the arrays

    1912:    Level: intermediate

    1914:    Note:
    1915:    This routine is a preferred replacement to PetscMemcpy()
    1916:    The arrays must be of the same type

    1918: .seealso: PetscMemcpy(), PetscMemcmp(), PetscArrayzero(), PetscMemzero(), PetscArraymove(), PetscMemmove(), PetscArraycmp(), PetscStrallocpy()
    1919: M*/
    1920: #define  PetscArraycpy(str1,str2,cnt) ((sizeof(*(str1)) != sizeof(*(str2))) || PetscMemcpy(str1,str2,(size_t)(cnt)*sizeof(*(str1))))

    1922: /*MC
    1923:    PetscArrayzero - Zeros an array in memory.

    1925:    Synopsis:
    1926: #include <petscsys.h>
    1927:     PetscErrorCode PetscArrayzero(anytype *str1,size_t cnt)

    1929:    Not Collective

    1931:    Input Parameters:
    1932: +  str1 - array
    1933: -  cnt  - Count of the array, not in bytes, but number of entries in the array

    1935:    Level: intermediate

    1937:    Note:
    1938:    This routine is a preferred replacement to PetscMemzero()

    1940: .seealso: PetscMemcpy(), PetscMemcmp(), PetscMemzero(), PetscArraycmp(), PetscArraycpy(), PetscMemmove(), PetscStrallocpy(), PetscArraymove()
    1941: M*/
    1942: #define  PetscArrayzero(str1,cnt) PetscMemzero(str1,(size_t)(cnt)*sizeof(*(str1)))

    1944: /*MC
    1945:    PetscPrefetchBlock - Prefetches a block of memory

    1947:    Synopsis:
    1948: #include <petscsys.h>
    1949:     void PetscPrefetchBlock(const anytype *a,size_t n,int rw,int t)

    1951:    Not Collective

    1953:    Input Parameters:
    1954: +  a - pointer to first element to fetch (any type but usually PetscInt or PetscScalar)
    1955: .  n - number of elements to fetch
    1956: .  rw - 1 if the memory will be written to, otherwise 0 (ignored by many processors)
    1957: -  t - temporal locality (PETSC_PREFETCH_HINT_{NTA,T0,T1,T2}), see note

    1959:    Level: developer

    1961:    Notes:
    1962:    The last two arguments (rw and t) must be compile-time constants.

    1964:    Adopting Intel's x86/x86-64 conventions, there are four levels of temporal locality.  Not all architectures offer
    1965:    equivalent locality hints, but the following macros are always defined to their closest analogue.
    1966: +  PETSC_PREFETCH_HINT_NTA - Non-temporal.  Prefetches directly to L1, evicts to memory (skips higher level cache unless it was already there when prefetched).
    1967: .  PETSC_PREFETCH_HINT_T0 - Fetch to all levels of cache and evict to the closest level.  Use this when the memory will be reused regularly despite necessary eviction from L1.
    1968: .  PETSC_PREFETCH_HINT_T1 - Fetch to level 2 and higher (not L1).
    1969: -  PETSC_PREFETCH_HINT_T2 - Fetch to high-level cache only.  (On many systems, T0 and T1 are equivalent.)

    1971:    This function does nothing on architectures that do not support prefetch and never errors (even if passed an invalid
    1972:    address).

    1974: M*/
    1975: #define PetscPrefetchBlock(a,n,rw,t) do {                               \
    1976:     const char *_p = (const char*)(a),*_end = (const char*)((a)+(n));   \
    1977:     for (; _p < _end; _p += PETSC_LEVEL1_DCACHE_LINESIZE) PETSC_Prefetch(_p,(rw),(t)); \
    1978:   } while (0)

    1980: /*
    1981:       Determine if some of the kernel computation routines use
    1982:    Fortran (rather than C) for the numerical calculations. On some machines
    1983:    and compilers (like complex numbers) the Fortran version of the routines
    1984:    is faster than the C/C++ versions. The flag --with-fortran-kernels
    1985:    should be used with ./configure to turn these on.
    1986: */
    1987: #if defined(PETSC_USE_FORTRAN_KERNELS)

    1989: #if !defined(PETSC_USE_FORTRAN_KERNEL_MULTCRL)
    1990: #define PETSC_USE_FORTRAN_KERNEL_MULTCRL
    1991: #endif

    1993: #if !defined(PETSC_USE_FORTRAN_KERNEL_MULTAIJPERM)
    1994: #define PETSC_USE_FORTRAN_KERNEL_MULTAIJPERM
    1995: #endif

    1997: #if !defined(PETSC_USE_FORTRAN_KERNEL_MULTAIJ)
    1998: #define PETSC_USE_FORTRAN_KERNEL_MULTAIJ
    1999: #endif

    2001: #if !defined(PETSC_USE_FORTRAN_KERNEL_MULTTRANSPOSEAIJ)
    2002: #define PETSC_USE_FORTRAN_KERNEL_MULTTRANSPOSEAIJ
    2003: #endif

    2005: #if !defined(PETSC_USE_FORTRAN_KERNEL_NORM)
    2006: #define PETSC_USE_FORTRAN_KERNEL_NORM
    2007: #endif

    2009: #if !defined(PETSC_USE_FORTRAN_KERNEL_MAXPY)
    2010: #define PETSC_USE_FORTRAN_KERNEL_MAXPY
    2011: #endif

    2013: #if !defined(PETSC_USE_FORTRAN_KERNEL_SOLVEAIJ)
    2014: #define PETSC_USE_FORTRAN_KERNEL_SOLVEAIJ
    2015: #endif

    2017: #if !defined(PETSC_USE_FORTRAN_KERNEL_RELAXAIJ)
    2018: #define PETSC_USE_FORTRAN_KERNEL_RELAXAIJ
    2019: #endif

    2021: #if !defined(PETSC_USE_FORTRAN_KERNEL_SOLVEBAIJ)
    2022: #define PETSC_USE_FORTRAN_KERNEL_SOLVEBAIJ
    2023: #endif

    2025: #if !defined(PETSC_USE_FORTRAN_KERNEL_MULTADDAIJ)
    2026: #define PETSC_USE_FORTRAN_KERNEL_MULTADDAIJ
    2027: #endif

    2029: #if !defined(PETSC_USE_FORTRAN_KERNEL_MDOT)
    2030: #define PETSC_USE_FORTRAN_KERNEL_MDOT
    2031: #endif

    2033: #if !defined(PETSC_USE_FORTRAN_KERNEL_XTIMESY)
    2034: #define PETSC_USE_FORTRAN_KERNEL_XTIMESY
    2035: #endif

    2037: #if !defined(PETSC_USE_FORTRAN_KERNEL_AYPX)
    2038: #define PETSC_USE_FORTRAN_KERNEL_AYPX
    2039: #endif

    2041: #if !defined(PETSC_USE_FORTRAN_KERNEL_WAXPY)
    2042: #define PETSC_USE_FORTRAN_KERNEL_WAXPY
    2043: #endif

    2045: #endif

    2047: /*
    2048:     Macros for indicating code that should be compiled with a C interface,
    2049:    rather than a C++ interface. Any routines that are dynamically loaded
    2050:    (such as the PCCreate_XXX() routines) must be wrapped so that the name
    2051:    mangler does not change the functions symbol name. This just hides the
    2052:    ugly extern "C" {} wrappers.
    2053: */
    2054: #if defined(__cplusplus)
    2055: #  define EXTERN_C_BEGIN extern "C" {
    2056: #  define EXTERN_C_END }
    2057: #else
    2058: #  define EXTERN_C_BEGIN
    2059: #  define EXTERN_C_END
    2060: #endif

    2062: /* --------------------------------------------------------------------*/

    2064: /*MC
    2065:     MPI_Comm - the basic object used by MPI to determine which processes are involved in a
    2066:         communication

    2068:    Level: beginner

    2070:    Note: This manual page is a place-holder because MPICH does not have a manual page for MPI_Comm

    2072: .seealso: PETSC_COMM_WORLD, PETSC_COMM_SELF
    2073: M*/

    2075: #if defined(PETSC_HAVE_MPIIO)
    2076: PETSC_EXTERN PetscErrorCode MPIU_File_write_all(MPI_File,void*,PetscMPIInt,MPI_Datatype,MPI_Status*);
    2077: PETSC_EXTERN PetscErrorCode MPIU_File_read_all(MPI_File,void*,PetscMPIInt,MPI_Datatype,MPI_Status*);
    2078: PETSC_EXTERN PetscErrorCode MPIU_File_write_at(MPI_File,MPI_Offset,void*,PetscMPIInt,MPI_Datatype,MPI_Status*);
    2079: PETSC_EXTERN PetscErrorCode MPIU_File_read_at(MPI_File,MPI_Offset,void*,PetscMPIInt,MPI_Datatype,MPI_Status*);
    2080: PETSC_EXTERN PetscErrorCode MPIU_File_write_at_all(MPI_File,MPI_Offset,void*,PetscMPIInt,MPI_Datatype,MPI_Status*);
    2081: PETSC_EXTERN PetscErrorCode MPIU_File_read_at_all(MPI_File,MPI_Offset,void*,PetscMPIInt,MPI_Datatype,MPI_Status*);
    2082: #endif

    2084: /* the following petsc_static_inline require petscerror.h */

    2086: /* Limit MPI to 32-bits */
    2087: #define PETSC_MPI_INT_MAX  2147483647
    2088: #define PETSC_MPI_INT_MIN -2147483647
    2089: /* Limit BLAS to 32-bits */
    2090: #define PETSC_BLAS_INT_MAX  2147483647
    2091: #define PETSC_BLAS_INT_MIN -2147483647

    2093: /*@C
    2094:     PetscIntCast - casts a PetscInt64 (which is 64 bits in size) to a PetscInt (which may be 32 bits in size), generates an
    2095:          error if the PetscInt is not large enough to hold the number.

    2097:    Not Collective

    2099:    Input Parameter:
    2100: .     a - the PetscInt64 value

    2102:    Output Parameter:
    2103: .     b - the resulting PetscInt value

    2105:    Level: advanced

    2107:    Notes: If integers needed for the applications are too large to fit in 32 bit ints you can ./configure using --with-64-bit-indices to make PetscInt use 64 bit ints

    2109:    Not available from Fortran

    2111: .seealso: PetscBLASInt, PetscMPIInt, PetscInt, PetscMPIIntCast(), PetscBLASIntCast(), PetscIntMultError(), PetscIntSumError()
    2112: @*/
    2113: PETSC_STATIC_INLINE PetscErrorCode PetscIntCast(PetscInt64 a,PetscInt *b)
    2114: {
    2116: #if !defined(PETSC_USE_64BIT_INDICES)
    2117:   if ((a) > PETSC_MAX_INT) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ARG_OUTOFRANGE,"Integer too long for PetscInt, you may need to ./configure using --with-64-bit-indices");
    2118: #endif
    2119:   *b =  (PetscInt)(a);
    2120:   return(0);
    2121: }

    2123: /*@C
    2124:     PetscBLASIntCast - casts a PetscInt (which may be 64 bits in size) to a PetscBLASInt (which may be 32 bits in size), generates an
    2125:          error if the PetscBLASInt is not large enough to hold the number.

    2127:    Not Collective

    2129:    Input Parameter:
    2130: .     a - the PetscInt value

    2132:    Output Parameter:
    2133: .     b - the resulting PetscBLASInt value

    2135:    Level: advanced

    2137:    Notes:
    2138:       Not available from Fortran
    2139:       Errors if the integer is negative since PETSc calls to BLAS/LAPACK never need to cast negative integer inputs

    2141: .seealso: PetscBLASInt, PetscMPIInt, PetscInt, PetscMPIIntCast(), PetscIntCast()
    2142: @*/
    2143: PETSC_STATIC_INLINE PetscErrorCode PetscBLASIntCast(PetscInt a,PetscBLASInt *b)
    2144: {
    2146: #if defined(PETSC_USE_64BIT_INDICES) && !defined(PETSC_HAVE_64BIT_BLAS_INDICES)
    2147:   *b = 0;
    2148:   if ((a) > PETSC_BLAS_INT_MAX) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ARG_OUTOFRANGE,"Array is too long for BLAS/LAPACK, which is restricted to 32 bit integers.  Either you have an invalidly large integer error in your code or you must ./configure PETSc with -with-64-bit-blas-indices for the case you are running");
    2149: #endif
    2150:   if (a < 0) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ARG_OUTOFRANGE,"Passing negative integer to BLAS/LAPACK routine");
    2151:   *b =  (PetscBLASInt)(a);
    2152:   return(0);
    2153: }

    2155: /*@C
    2156:     PetscMPIIntCast - casts a PetscInt (which may be 64 bits in size) to a PetscMPIInt (which may be 32 bits in size), generates an
    2157:          error if the PetscMPIInt is not large enough to hold the number.

    2159:    Not Collective

    2161:    Input Parameter:
    2162: .     a - the PetscInt value

    2164:    Output Parameter:
    2165: .     b - the resulting PetscMPIInt value

    2167:    Level: advanced

    2169:    Not available from Fortran

    2171: .seealso: PetscBLASInt, PetscMPIInt, PetscInt, PetscBLASIntCast(), PetscIntCast()
    2172: @*/
    2173: PETSC_STATIC_INLINE PetscErrorCode PetscMPIIntCast(PetscInt a,PetscMPIInt *b)
    2174: {
    2176: #if defined(PETSC_USE_64BIT_INDICES)
    2177:   *b = 0;
    2178:   if ((a) > PETSC_MPI_INT_MAX) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ARG_OUTOFRANGE,"Array too long for MPI, which is restricted to 32 bit integers");
    2179: #endif
    2180:   *b =  (PetscMPIInt)(a);
    2181:   return(0);
    2182: }

    2184: #define PetscInt64Mult(a,b)   ((PetscInt64)(a))*((PetscInt64)(b))

    2186: /*@C

    2188:    PetscRealIntMultTruncate - Computes the product of a positive PetscReal and a positive PetscInt and truncates the value to slightly less than the maximal possible value

    2190:    Not Collective

    2192:    Input Parameter:
    2193: +     a - the PetscReal value
    2194: -     b - the second value

    2196:    Returns:
    2197:       the result as a PetscInt value

    2199:    Use PetscInt64Mult() to compute the product of two PetscInt as a PetscInt64
    2200:    Use PetscIntMultTruncate() to compute the product of two positive PetscInt and truncate to fit a PetscInt
    2201:    Use PetscIntMultError() to compute the product of two PetscInt if you wish to generate an error if the result will not fit in a PetscInt

    2203:    Developers Note:
    2204:    We currently assume that PetscInt addition can never overflow, this is obviously wrong but requires many more checks.

    2206:    This is used where we compute approximate sizes for workspace and need to insure the workspace is index-able.

    2208:    Not available from Fortran

    2210:    Level: advanced

    2212: .seealso: PetscBLASInt, PetscMPIInt, PetscInt, PetscBLASIntCast(), PetscInt64Mult(), PetscIntMultError(), PetscIntSumError()
    2213: @*/
    2214: PETSC_STATIC_INLINE PetscInt PetscRealIntMultTruncate(PetscReal a,PetscInt b)
    2215: {
    2216:   PetscInt64 r;

    2218:   r  =  (PetscInt64) (a*(PetscReal)b);
    2219:   if (r > PETSC_MAX_INT - 100) r = PETSC_MAX_INT - 100;
    2220:   return (PetscInt) r;
    2221: }

    2223: /*@C

    2225:    PetscIntMultTruncate - Computes the product of two positive PetscInt and truncates the value to slightly less than the maximal possible value

    2227:    Not Collective

    2229:    Input Parameter:
    2230: +     a - the PetscInt value
    2231: -     b - the second value

    2233:    Returns:
    2234:       the result as a PetscInt value

    2236:    Use PetscInt64Mult() to compute the product of two PetscInt as a PetscInt64
    2237:    Use PetscRealIntMultTruncate() to compute the product of a PetscReal and a PetscInt and truncate to fit a PetscInt
    2238:    Use PetscIntMultError() to compute the product of two PetscInt if you wish to generate an error if the result will not fit in a PetscInt

    2240:    Not available from Fortran

    2242:    Developers Note: We currently assume that PetscInt addition can never overflow, this is obviously wrong but requires many more checks.

    2244:    This is used where we compute approximate sizes for workspace and need to insure the workspace is index-able.

    2246:    Level: advanced

    2248: .seealso: PetscBLASInt, PetscMPIInt, PetscInt, PetscBLASIntCast(), PetscInt64Mult(), PetscIntMultError(), PetscIntSumError()
    2249: @*/
    2250: PETSC_STATIC_INLINE PetscInt PetscIntMultTruncate(PetscInt a,PetscInt b)
    2251: {
    2252:   PetscInt64 r;

    2254:   r  =  PetscInt64Mult(a,b);
    2255:   if (r > PETSC_MAX_INT - 100) r = PETSC_MAX_INT - 100;
    2256:   return (PetscInt) r;
    2257: }

    2259: /*@C

    2261:    PetscIntSumTruncate - Computes the sum of two positive PetscInt and truncates the value to slightly less than the maximal possible value

    2263:    Not Collective

    2265:    Input Parameter:
    2266: +     a - the PetscInt value
    2267: -     b - the second value

    2269:    Returns:
    2270:      the result as a PetscInt value

    2272:    Use PetscInt64Mult() to compute the product of two PetscInt as a PetscInt64
    2273:    Use PetscRealIntMultTruncate() to compute the product of a PetscReal and a PetscInt and truncate to fit a PetscInt
    2274:    Use PetscIntMultError() to compute the product of two PetscInt if you wish to generate an error if the result will not fit in a PetscInt

    2276:    This is used where we compute approximate sizes for workspace and need to insure the workspace is index-able.

    2278:    Not available from Fortran

    2280:    Level: advanced

    2282: .seealso: PetscBLASInt, PetscMPIInt, PetscInt, PetscBLASIntCast(), PetscInt64Mult(), PetscIntMultError()
    2283: @*/
    2284: PETSC_STATIC_INLINE PetscInt PetscIntSumTruncate(PetscInt a,PetscInt b)
    2285: {
    2286:   PetscInt64 r;

    2288:   r  =  ((PetscInt64)a) + ((PetscInt64)b);
    2289:   if (r > PETSC_MAX_INT - 100) r = PETSC_MAX_INT - 100;
    2290:   return (PetscInt) r;
    2291: }

    2293: /*@C

    2295:    PetscIntMultError - Computes the product of two positive PetscInt and generates an error with overflow.

    2297:    Not Collective

    2299:    Input Parameter:
    2300: +     a - the PetscInt value
    2301: -     b - the second value

    2303:    Output Parameter:ma
    2304: .     result - the result as a PetscInt value, or NULL if you do not want the result, you just want to check if it overflows

    2306:    Use PetscInt64Mult() to compute the product of two 32 bit PetscInt and store in a PetscInt64
    2307:    Use PetscIntMultTruncate() to compute the product of two PetscInt and truncate it to fit in a PetscInt

    2309:    Not available from Fortran

    2311:    Developers Note: We currently assume that PetscInt addition does not overflow, this is obviously wrong but requires many more checks.

    2313:    Level: advanced

    2315: .seealso: PetscBLASInt, PetscMPIInt, PetscInt, PetscBLASIntCast(), PetscIntMult64(), PetscIntSumError()
    2316: @*/
    2317: PETSC_STATIC_INLINE PetscErrorCode PetscIntMultError(PetscInt a,PetscInt b,PetscInt *result)
    2318: {
    2319:   PetscInt64 r;

    2322:   r  =  PetscInt64Mult(a,b);
    2323: #if !defined(PETSC_USE_64BIT_INDICES)
    2324:   if (r > PETSC_MAX_INT) SETERRQ2(PETSC_COMM_SELF,PETSC_ERR_SUP,"Product of two integers %d %d overflow, either you have an invalidly large integer error in your code or you must ./configure PETSc with --with-64-bit-indices for the case you are running",a,b);
    2325: #endif
    2326:   if (result) *result = (PetscInt) r;
    2327:   return(0);
    2328: }

    2330: /*@C

    2332:    PetscIntSumError - Computes the sum of two positive PetscInt and generates an error with overflow.

    2334:    Not Collective

    2336:    Input Parameter:
    2337: +     a - the PetscInt value
    2338: -     b - the second value

    2340:    Output Parameter:ma
    2341: .     c - the result as a PetscInt value,  or NULL if you do not want the result, you just want to check if it overflows

    2343:    Use PetscInt64Mult() to compute the product of two 32 bit PetscInt and store in a PetscInt64
    2344:    Use PetscIntMultTruncate() to compute the product of two PetscInt and truncate it to fit in a PetscInt

    2346:    Not available from Fortran

    2348:    Level: advanced

    2350: .seealso: PetscBLASInt, PetscMPIInt, PetscInt, PetscBLASIntCast(), PetscInt64Mult(), PetscIntMultError()
    2351: @*/
    2352: PETSC_STATIC_INLINE PetscErrorCode PetscIntSumError(PetscInt a,PetscInt b,PetscInt *result)
    2353: {
    2354:   PetscInt64 r;

    2357:   r  =  ((PetscInt64)a) + ((PetscInt64)b);
    2358: #if !defined(PETSC_USE_64BIT_INDICES)
    2359:   if (r > PETSC_MAX_INT) SETERRQ2(PETSC_COMM_SELF,PETSC_ERR_SUP,"Sum of two integers %d %d overflow, either you have an invalidly large integer error in your code or you must ./configure PETSc with --with-64-bit-indices for the case you are running",a,b);
    2360: #endif
    2361:   if (result) *result = (PetscInt) r;
    2362:   return(0);
    2363: }

    2365: /*
    2366:      The IBM include files define hz, here we hide it so that it may be used as a regular user variable.
    2367: */
    2368: #if defined(hz)
    2369: #  undef hz
    2370: #endif

    2372: #include <limits.h>

    2374: /* The number of bits in a byte */

    2376: #define PETSC_BITS_PER_BYTE CHAR_BIT

    2378: #if defined(PETSC_HAVE_SYS_TYPES_H)
    2379: #  include <sys/types.h>
    2380: #endif

    2382: /*MC

    2384:     PETSC_VERSION - This manual page provides information about how PETSc documents and uses its version information. This information is available to both C/C++
    2385:                     and Fortran compilers when petscsys.h is included.

    2388:     The current PETSc version and the API for accessing it are defined in petscversion.h

    2390:     The complete version number is given as the triple  PETSC_VERSION_MAJOR.PETSC_VERSION_MINOR.PETSC_VERSION_SUBMINOR (in short hand x.y.z)

    2392:     A change in the minor version number (y) indicates possible/likely changes in the PETSc API. Note this is different than with the semantic versioning convention
    2393:     where only a change in the major version number (x) indicates a change in the API.

    2395:     A subminor greater than zero indicates a patch release. Version x.y.z maintains source and binary compatibility with version x.y.w for all z and w

    2397:     Use the macros PETSC_VERSION_EQ(x,y,z), PETSC_VERSION_LT(x,y,z), PETSC_VERSION_LE(x,y,z), PETSC_VERSION_GT(x,y,z),
    2398:     PETSC_VERSION_GE(x,y,z) to determine if the current version is equal to, less than, less than or equal to, greater than or greater than or equal to a given
    2399:     version number (x.y.z).

    2401:     PETSC_RELEASE_DATE is the date the x.y version was released (i.e. the version before any patch releases)

    2403:     PETSC_VERSION_DATE is the date the x.y.z version was released

    2405:     PETSC_VERSION_GIT is the last git commit to the repository given in the form vx.y.z-wwwww

    2407:     PETSC_VERSION_DATE_GIT is the date of the last git commit to the repository

    2409:     Level: intermediate

    2411:     PETSC_VERSION_() and PETSC_VERSION_PATCH are deprecated and will eventually be removed. For several releases PETSC_VERSION_PATCH is always 0

    2413: M*/

    2415: /*MC

    2417:     UsingFortran - To use PETSc with Fortran you must use both PETSc include files and modules. At the beginning
    2418:       of every function and module definition you need something like

    2420: $
    2421: $#include "petsc/finclude/petscXXX.h"
    2422: $         use petscXXX

    2424:      You can declare PETSc variables using either of the following.

    2426: $    XXX variablename
    2427: $    type(tXXX) variablename

    2429:     For example,

    2431: $#include "petsc/finclude/petscvec.h"
    2432: $         use petscvec
    2433: $
    2434: $    Vec b
    2435: $    type(tVec) x

    2437:     Level: beginner

    2439: M*/

    2441: PETSC_EXTERN PetscErrorCode PetscGetArchType(char[],size_t);
    2442: PETSC_EXTERN PetscErrorCode PetscGetHostName(char[],size_t);
    2443: PETSC_EXTERN PetscErrorCode PetscGetUserName(char[],size_t);
    2444: PETSC_EXTERN PetscErrorCode PetscGetProgramName(char[],size_t);
    2445: PETSC_EXTERN PetscErrorCode PetscSetProgramName(const char[]);
    2446: PETSC_EXTERN PetscErrorCode PetscGetDate(char[],size_t);
    2447: PETSC_EXTERN PetscErrorCode PetscGetVersion(char[], size_t);
    2448: PETSC_EXTERN PetscErrorCode PetscGetVersionNumber(PetscInt*,PetscInt*,PetscInt*,PetscInt*);

    2450: PETSC_EXTERN PetscErrorCode PetscSortedInt(PetscInt,const PetscInt[],PetscBool*);
    2451: PETSC_EXTERN PetscErrorCode PetscSortedMPIInt(PetscInt,const PetscMPIInt[],PetscBool*);
    2452: PETSC_EXTERN PetscErrorCode PetscSortedReal(PetscInt,const PetscReal[],PetscBool*);
    2453: PETSC_EXTERN PetscErrorCode PetscSortInt(PetscInt,PetscInt[]);
    2454: PETSC_EXTERN PetscErrorCode PetscSortReverseInt(PetscInt,PetscInt[]);
    2455: PETSC_EXTERN PetscErrorCode PetscSortedRemoveDupsInt(PetscInt*,PetscInt[]);
    2456: PETSC_EXTERN PetscErrorCode PetscSortRemoveDupsInt(PetscInt*,PetscInt[]);
    2458: PETSC_EXTERN PetscErrorCode PetscFindInt(PetscInt, PetscInt, const PetscInt[], PetscInt*);
    2459: PETSC_EXTERN PetscErrorCode PetscFindMPIInt(PetscMPIInt, PetscInt, const PetscMPIInt[], PetscInt*);
    2460: PETSC_EXTERN PetscErrorCode PetscSortIntWithPermutation(PetscInt,const PetscInt[],PetscInt[]);
    2461: PETSC_EXTERN PetscErrorCode PetscSortStrWithPermutation(PetscInt,const char*[],PetscInt[]);
    2462: PETSC_EXTERN PetscErrorCode PetscSortIntWithArray(PetscInt,PetscInt[],PetscInt[]);
    2463: PETSC_EXTERN PetscErrorCode PetscSortIntWithArrayPair(PetscInt,PetscInt[],PetscInt[],PetscInt[]);
    2464: PETSC_EXTERN PetscErrorCode PetscSortMPIInt(PetscInt,PetscMPIInt[]);
    2465: PETSC_EXTERN PetscErrorCode PetscSortRemoveDupsMPIInt(PetscInt*,PetscMPIInt[]);
    2466: PETSC_EXTERN PetscErrorCode PetscSortMPIIntWithArray(PetscMPIInt,PetscMPIInt[],PetscMPIInt[]);
    2467: PETSC_EXTERN PetscErrorCode PetscSortMPIIntWithIntArray(PetscMPIInt,PetscMPIInt[],PetscInt[]);
    2468: PETSC_EXTERN PetscErrorCode PetscSortIntWithScalarArray(PetscInt,PetscInt[],PetscScalar[]);
    2469: PETSC_EXTERN PetscErrorCode PetscSortIntWithDataArray(PetscInt,PetscInt[],void*,size_t,void*);
    2470: PETSC_EXTERN PetscErrorCode PetscSortReal(PetscInt,PetscReal[]);
    2471: PETSC_EXTERN PetscErrorCode PetscSortRealWithArrayInt(PetscInt,PetscReal[],PetscInt[]);
    2472: PETSC_EXTERN PetscErrorCode PetscSortRealWithPermutation(PetscInt,const PetscReal[],PetscInt[]);
    2473: PETSC_EXTERN PetscErrorCode PetscSortRemoveDupsReal(PetscInt*,PetscReal[]);
    2474: PETSC_EXTERN PetscErrorCode PetscFindReal(PetscReal,PetscInt,const PetscReal[],PetscReal,PetscInt*);
    2475: PETSC_EXTERN PetscErrorCode PetscSortSplit(PetscInt,PetscInt,PetscScalar[],PetscInt[]);
    2476: PETSC_EXTERN PetscErrorCode PetscSortSplitReal(PetscInt,PetscInt,PetscReal[],PetscInt[]);
    2477: PETSC_EXTERN PetscErrorCode PetscProcessTree(PetscInt,const PetscBool [],const PetscInt[],PetscInt*,PetscInt**,PetscInt**,PetscInt**,PetscInt**);
    2478: PETSC_EXTERN PetscErrorCode PetscMergeIntArrayPair(PetscInt,const PetscInt[],const PetscInt[],PetscInt,const PetscInt[],const PetscInt[],PetscInt*,PetscInt**,PetscInt**);
    2479: PETSC_EXTERN PetscErrorCode PetscMergeIntArray(PetscInt,const PetscInt[],PetscInt,const PetscInt[],PetscInt*,PetscInt**);
    2480: PETSC_EXTERN PetscErrorCode PetscMergeMPIIntArray(PetscInt,const PetscMPIInt[],PetscInt,const PetscMPIInt[],PetscInt*,PetscMPIInt**);
    2481: PETSC_EXTERN PetscErrorCode PetscParallelSortedInt(MPI_Comm, PetscInt, const PetscInt[], PetscBool *);

    2483: PETSC_EXTERN PetscErrorCode PetscTimSort(PetscInt,void*,size_t,int(*)(const void*,const void*,void*),void*);
    2484: PETSC_EXTERN PetscErrorCode PetscIntSortSemiOrdered(PetscInt,PetscInt[]);
    2485: PETSC_EXTERN PetscErrorCode PetscMPIIntSortSemiOrdered(PetscInt,PetscMPIInt[]);
    2486: PETSC_EXTERN PetscErrorCode PetscRealSortSemiOrdered(PetscInt,PetscReal[]);
    2487: PETSC_EXTERN PetscErrorCode PetscTimSortWithArray(PetscInt,void*,size_t,void*,size_t,int(*)(const void*,const void*,void*),void*);
    2488: PETSC_EXTERN PetscErrorCode PetscIntSortSemiOrderedWithArray(PetscInt,PetscInt[],PetscInt[]);
    2489: PETSC_EXTERN PetscErrorCode PetscMPIIntSortSemiOrderedWithArray(PetscInt,PetscMPIInt[],PetscMPIInt[]);
    2490: PETSC_EXTERN PetscErrorCode PetscRealSortSemiOrderedWithArrayInt(PetscInt,PetscReal[],PetscInt[]);

    2492: PETSC_EXTERN PetscErrorCode PetscSetDisplay(void);
    2493: PETSC_EXTERN PetscErrorCode PetscGetDisplay(char[],size_t);

    2495: /*J
    2496:     PetscRandomType - String with the name of a PETSc randomizer

    2498:    Level: beginner

    2500:    Notes:
    2501:    To use SPRNG or RANDOM123 you must have ./configure PETSc
    2502:    with the option --download-sprng or --download-random123

    2504: .seealso: PetscRandomSetType(), PetscRandom, PetscRandomCreate()
    2505: J*/
    2506: typedef const char* PetscRandomType;
    2507: #define PETSCRAND       "rand"
    2508: #define PETSCRAND48     "rand48"
    2509: #define PETSCSPRNG      "sprng"
    2510: #define PETSCRANDER48   "rander48"
    2511: #define PETSCRANDOM123  "random123"

    2513: /* Logging support */
    2514: PETSC_EXTERN PetscClassId PETSC_RANDOM_CLASSID;

    2516: PETSC_EXTERN PetscErrorCode PetscRandomInitializePackage(void);

    2518: /* Dynamic creation and loading functions */
    2519: PETSC_EXTERN PetscFunctionList PetscRandomList;

    2521: PETSC_EXTERN PetscErrorCode PetscRandomRegister(const char[],PetscErrorCode (*)(PetscRandom));
    2522: PETSC_EXTERN PetscErrorCode PetscRandomSetType(PetscRandom, PetscRandomType);
    2523: PETSC_EXTERN PetscErrorCode PetscRandomSetFromOptions(PetscRandom);
    2524: PETSC_EXTERN PetscErrorCode PetscRandomGetType(PetscRandom, PetscRandomType*);
    2525: PETSC_EXTERN PetscErrorCode PetscRandomViewFromOptions(PetscRandom,PetscObject,const char[]);
    2526: PETSC_EXTERN PetscErrorCode PetscRandomView(PetscRandom,PetscViewer);

    2528: PETSC_EXTERN PetscErrorCode PetscRandomCreate(MPI_Comm,PetscRandom*);
    2529: PETSC_EXTERN PetscErrorCode PetscRandomGetValue(PetscRandom,PetscScalar*);
    2530: PETSC_EXTERN PetscErrorCode PetscRandomGetValueReal(PetscRandom,PetscReal*);
    2531: PETSC_EXTERN PetscErrorCode PetscRandomGetInterval(PetscRandom,PetscScalar*,PetscScalar*);
    2532: PETSC_EXTERN PetscErrorCode PetscRandomSetInterval(PetscRandom,PetscScalar,PetscScalar);
    2533: PETSC_EXTERN PetscErrorCode PetscRandomSetSeed(PetscRandom,unsigned long);
    2534: PETSC_EXTERN PetscErrorCode PetscRandomGetSeed(PetscRandom,unsigned long *);
    2535: PETSC_EXTERN PetscErrorCode PetscRandomSeed(PetscRandom);
    2536: PETSC_EXTERN PetscErrorCode PetscRandomDestroy(PetscRandom*);

    2538: PETSC_EXTERN PetscErrorCode PetscGetFullPath(const char[],char[],size_t);
    2539: PETSC_EXTERN PetscErrorCode PetscGetRelativePath(const char[],char[],size_t);
    2540: PETSC_EXTERN PetscErrorCode PetscGetWorkingDirectory(char[],size_t);
    2541: PETSC_EXTERN PetscErrorCode PetscGetRealPath(const char[],char[]);
    2542: PETSC_EXTERN PetscErrorCode PetscGetHomeDirectory(char[],size_t);
    2543: PETSC_EXTERN PetscErrorCode PetscTestFile(const char[],char,PetscBool *);
    2544: PETSC_EXTERN PetscErrorCode PetscTestDirectory(const char[],char,PetscBool *);
    2545: PETSC_EXTERN PetscErrorCode PetscMkdir(const char[]);
    2546: PETSC_EXTERN PetscErrorCode PetscMkdtemp(char[]);
    2547: PETSC_EXTERN PetscErrorCode PetscRMTree(const char[]);

    2549: PETSC_STATIC_INLINE PetscBool PetscBinaryBigEndian(void) {long _petsc_v = 1; return ((char*)&_petsc_v)[0] ? PETSC_FALSE : PETSC_TRUE;}

    2551: PETSC_EXTERN PetscErrorCode PetscBinaryRead(int,void*,PetscInt,PetscInt*,PetscDataType);
    2552: PETSC_EXTERN PetscErrorCode PetscBinarySynchronizedRead(MPI_Comm,int,void*,PetscInt,PetscInt*,PetscDataType);
    2553: PETSC_EXTERN PetscErrorCode PetscBinaryWrite(int,const void*,PetscInt,PetscDataType);
    2554: PETSC_EXTERN PetscErrorCode PetscBinarySynchronizedWrite(MPI_Comm,int,const void*,PetscInt,PetscDataType);
    2555: PETSC_EXTERN PetscErrorCode PetscBinaryOpen(const char[],PetscFileMode,int *);
    2556: PETSC_EXTERN PetscErrorCode PetscBinaryClose(int);
    2557: PETSC_EXTERN PetscErrorCode PetscSharedTmp(MPI_Comm,PetscBool  *);
    2558: PETSC_EXTERN PetscErrorCode PetscSharedWorkingDirectory(MPI_Comm,PetscBool  *);
    2559: PETSC_EXTERN PetscErrorCode PetscGetTmp(MPI_Comm,char[],size_t);
    2560: PETSC_EXTERN PetscErrorCode PetscFileRetrieve(MPI_Comm,const char[],char[],size_t,PetscBool *);
    2561: PETSC_EXTERN PetscErrorCode PetscLs(MPI_Comm,const char[],char[],size_t,PetscBool *);
    2562: #if defined(PETSC_USE_SOCKET_VIEWER)
    2563: PETSC_EXTERN PetscErrorCode PetscOpenSocket(const char[],int,int*);
    2564: #endif

    2566: PETSC_EXTERN PetscErrorCode PetscBinarySeek(int,off_t,PetscBinarySeekType,off_t*);
    2567: PETSC_EXTERN PetscErrorCode PetscBinarySynchronizedSeek(MPI_Comm,int,off_t,PetscBinarySeekType,off_t*);
    2568: PETSC_EXTERN PetscErrorCode PetscByteSwap(void *,PetscDataType,PetscInt);

    2570: PETSC_EXTERN PetscErrorCode PetscSetDebugTerminal(const char[]);
    2571: PETSC_EXTERN PetscErrorCode PetscSetDebugger(const char[],PetscBool);
    2572: PETSC_EXTERN PetscErrorCode PetscSetDefaultDebugger(void);
    2573: PETSC_EXTERN PetscErrorCode PetscSetDebuggerFromString(const char*);
    2574: PETSC_EXTERN PetscErrorCode PetscAttachDebugger(void);
    2575: PETSC_EXTERN PetscErrorCode PetscStopForDebugger(void);
    2576: PETSC_EXTERN PetscErrorCode PetscWaitOnError(void);

    2578: PETSC_EXTERN PetscErrorCode PetscGatherNumberOfMessages(MPI_Comm,const PetscMPIInt[],const PetscMPIInt[],PetscMPIInt*);
    2579: PETSC_EXTERN PetscErrorCode PetscGatherMessageLengths(MPI_Comm,PetscMPIInt,PetscMPIInt,const PetscMPIInt[],PetscMPIInt**,PetscMPIInt**);
    2580: PETSC_EXTERN PetscErrorCode PetscGatherMessageLengths2(MPI_Comm,PetscMPIInt,PetscMPIInt,const PetscMPIInt[],const PetscMPIInt[],PetscMPIInt**,PetscMPIInt**,PetscMPIInt**);
    2581: PETSC_EXTERN PetscErrorCode PetscPostIrecvInt(MPI_Comm,PetscMPIInt,PetscMPIInt,const PetscMPIInt[],const PetscMPIInt[],PetscInt***,MPI_Request**);
    2582: PETSC_EXTERN PetscErrorCode PetscPostIrecvScalar(MPI_Comm,PetscMPIInt,PetscMPIInt,const PetscMPIInt[],const PetscMPIInt[],PetscScalar***,MPI_Request**);
    2583: PETSC_EXTERN PetscErrorCode PetscCommBuildTwoSided(MPI_Comm,PetscMPIInt,MPI_Datatype,PetscMPIInt,const PetscMPIInt*,const void*,PetscMPIInt*,PetscMPIInt**,void*)
    2584:   PetscAttrMPIPointerWithType(6,3);
    2585: PETSC_EXTERN PetscErrorCode PetscCommBuildTwoSidedF(MPI_Comm,PetscMPIInt,MPI_Datatype,PetscMPIInt,const PetscMPIInt[],const void*,PetscMPIInt*,PetscMPIInt**,void*,PetscMPIInt,
    2586:                                                     PetscErrorCode (*send)(MPI_Comm,const PetscMPIInt[],PetscMPIInt,PetscMPIInt,void*,MPI_Request[],void*),
    2587:                                                     PetscErrorCode (*recv)(MPI_Comm,const PetscMPIInt[],PetscMPIInt,void*,MPI_Request[],void*),void *ctx)
    2588:   PetscAttrMPIPointerWithType(6,3);
    2589: PETSC_EXTERN PetscErrorCode PetscCommBuildTwoSidedFReq(MPI_Comm,PetscMPIInt,MPI_Datatype,PetscMPIInt,const PetscMPIInt[],const void*,PetscMPIInt*,PetscMPIInt**,void*,PetscMPIInt,
    2590:                                                        MPI_Request**,MPI_Request**,
    2591:                                                        PetscErrorCode (*send)(MPI_Comm,const PetscMPIInt[],PetscMPIInt,PetscMPIInt,void*,MPI_Request[],void*),
    2592:                                                        PetscErrorCode (*recv)(MPI_Comm,const PetscMPIInt[],PetscMPIInt,void*,MPI_Request[],void*),void *ctx)
    2593:   PetscAttrMPIPointerWithType(6,3);

    2595: PETSC_EXTERN const char *const PetscBuildTwoSidedTypes[];
    2596: PETSC_EXTERN PetscErrorCode PetscCommBuildTwoSidedSetType(MPI_Comm,PetscBuildTwoSidedType);
    2597: PETSC_EXTERN PetscErrorCode PetscCommBuildTwoSidedGetType(MPI_Comm,PetscBuildTwoSidedType*);

    2599: PETSC_EXTERN PetscErrorCode PetscSSEIsEnabled(MPI_Comm,PetscBool*,PetscBool*);

    2601: PETSC_EXTERN MPI_Comm PetscObjectComm(PetscObject);

    2603: PETSC_EXTERN const char *const PetscSubcommTypes[];

    2605: struct _n_PetscSubcomm {
    2606:   MPI_Comm         parent;           /* parent communicator */
    2607:   MPI_Comm         dupparent;        /* duplicate parent communicator, under which the processors of this subcomm have contiguous rank */
    2608:   MPI_Comm         child;            /* the sub-communicator */
    2609:   PetscMPIInt      n;                /* num of subcommunicators under the parent communicator */
    2610:   PetscMPIInt      color;            /* color of processors belong to this communicator */
    2611:   PetscMPIInt      *subsize;         /* size of subcommunicator[color] */
    2612:   PetscSubcommType type;
    2613:   char             *subcommprefix;
    2614: };

    2616: PETSC_STATIC_INLINE MPI_Comm PetscSubcommParent(PetscSubcomm scomm) {return scomm->parent;}
    2617: PETSC_STATIC_INLINE MPI_Comm PetscSubcommChild(PetscSubcomm scomm) {return scomm->child;}
    2618: PETSC_STATIC_INLINE MPI_Comm PetscSubcommContiguousParent(PetscSubcomm scomm) {return scomm->dupparent;}
    2619: PETSC_EXTERN PetscErrorCode PetscSubcommCreate(MPI_Comm,PetscSubcomm*);
    2620: PETSC_EXTERN PetscErrorCode PetscSubcommDestroy(PetscSubcomm*);
    2621: PETSC_EXTERN PetscErrorCode PetscSubcommSetNumber(PetscSubcomm,PetscInt);
    2622: PETSC_EXTERN PetscErrorCode PetscSubcommSetType(PetscSubcomm,PetscSubcommType);
    2623: PETSC_EXTERN PetscErrorCode PetscSubcommSetTypeGeneral(PetscSubcomm,PetscMPIInt,PetscMPIInt);
    2624: PETSC_EXTERN PetscErrorCode PetscSubcommView(PetscSubcomm,PetscViewer);
    2625: PETSC_EXTERN PetscErrorCode PetscSubcommSetFromOptions(PetscSubcomm);
    2626: PETSC_EXTERN PetscErrorCode PetscSubcommSetOptionsPrefix(PetscSubcomm,const char[]);
    2627: PETSC_EXTERN PetscErrorCode PetscSubcommGetParent(PetscSubcomm,MPI_Comm*);
    2628: PETSC_EXTERN PetscErrorCode PetscSubcommGetContiguousParent(PetscSubcomm,MPI_Comm*);
    2629: PETSC_EXTERN PetscErrorCode PetscSubcommGetChild(PetscSubcomm,MPI_Comm*);

    2631: PETSC_EXTERN PetscErrorCode PetscHeapCreate(PetscInt,PetscHeap*);
    2632: PETSC_EXTERN PetscErrorCode PetscHeapAdd(PetscHeap,PetscInt,PetscInt);
    2633: PETSC_EXTERN PetscErrorCode PetscHeapPop(PetscHeap,PetscInt*,PetscInt*);
    2634: PETSC_EXTERN PetscErrorCode PetscHeapPeek(PetscHeap,PetscInt*,PetscInt*);
    2635: PETSC_EXTERN PetscErrorCode PetscHeapStash(PetscHeap,PetscInt,PetscInt);
    2636: PETSC_EXTERN PetscErrorCode PetscHeapUnstash(PetscHeap);
    2637: PETSC_EXTERN PetscErrorCode PetscHeapDestroy(PetscHeap*);
    2638: PETSC_EXTERN PetscErrorCode PetscHeapView(PetscHeap,PetscViewer);

    2640: PETSC_EXTERN PetscErrorCode PetscProcessPlacementView(PetscViewer);
    2641: PETSC_EXTERN PetscErrorCode PetscShmCommGet(MPI_Comm,PetscShmComm*);
    2642: PETSC_EXTERN PetscErrorCode PetscShmCommGlobalToLocal(PetscShmComm,PetscMPIInt,PetscMPIInt*);
    2643: PETSC_EXTERN PetscErrorCode PetscShmCommLocalToGlobal(PetscShmComm,PetscMPIInt,PetscMPIInt*);
    2644: PETSC_EXTERN PetscErrorCode PetscShmCommGetMpiShmComm(PetscShmComm,MPI_Comm*);

    2646: /* routines to better support OpenMP multithreading needs of some PETSc third party libraries */
    2647: PETSC_EXTERN PetscErrorCode PetscOmpCtrlCreate(MPI_Comm,PetscInt,PetscOmpCtrl*);
    2648: PETSC_EXTERN PetscErrorCode PetscOmpCtrlGetOmpComms(PetscOmpCtrl,MPI_Comm*,MPI_Comm*,PetscBool*);
    2649: PETSC_EXTERN PetscErrorCode PetscOmpCtrlDestroy(PetscOmpCtrl*);
    2650: PETSC_EXTERN PetscErrorCode PetscOmpCtrlBarrier(PetscOmpCtrl);
    2651: PETSC_EXTERN PetscErrorCode PetscOmpCtrlOmpRegionOnMasterBegin(PetscOmpCtrl);
    2652: PETSC_EXTERN PetscErrorCode PetscOmpCtrlOmpRegionOnMasterEnd(PetscOmpCtrl);

    2654: PETSC_EXTERN PetscErrorCode PetscSegBufferCreate(size_t,size_t,PetscSegBuffer*);
    2655: PETSC_EXTERN PetscErrorCode PetscSegBufferDestroy(PetscSegBuffer*);
    2656: PETSC_EXTERN PetscErrorCode PetscSegBufferGet(PetscSegBuffer,size_t,void*);
    2657: PETSC_EXTERN PetscErrorCode PetscSegBufferExtractAlloc(PetscSegBuffer,void*);
    2658: PETSC_EXTERN PetscErrorCode PetscSegBufferExtractTo(PetscSegBuffer,void*);
    2659: PETSC_EXTERN PetscErrorCode PetscSegBufferExtractInPlace(PetscSegBuffer,void*);
    2660: PETSC_EXTERN PetscErrorCode PetscSegBufferGetSize(PetscSegBuffer,size_t*);
    2661: PETSC_EXTERN PetscErrorCode PetscSegBufferUnuse(PetscSegBuffer,size_t);

    2665:  * prevents the compiler from completely erasing the stub. This is called in inner loops so it has to be as fast as
    2666:  * possible. */
    2667: PETSC_STATIC_INLINE PetscErrorCode PetscSegBufferGetInts(PetscSegBuffer seg,size_t count,PetscInt *PETSC_RESTRICT *slot) {return PetscSegBufferGet(seg,count,(void**)slot);}

    2669: extern PetscOptionsHelpPrinted PetscOptionsHelpPrintedSingleton;
    2670: PETSC_EXTERN PetscErrorCode PetscOptionsHelpPrintedDestroy(PetscOptionsHelpPrinted*);
    2671: PETSC_EXTERN PetscErrorCode PetscOptionsHelpPrintedCreate(PetscOptionsHelpPrinted*);
    2672: PETSC_EXTERN PetscErrorCode PetscOptionsHelpPrintedCheck(PetscOptionsHelpPrinted,const char*,const char*,PetscBool*);

    2674: #include <stdarg.h>
    2675: PETSC_EXTERN PetscErrorCode PetscVSNPrintf(char*,size_t,const char[],size_t*,va_list);
    2676: PETSC_EXTERN PetscErrorCode (*PetscVFPrintf)(FILE*,const char[],va_list);

    2678: PETSC_EXTERN PetscSegBuffer PetscCitationsList;

    2680: /*@C
    2681:       PetscCitationsRegister - Register a bibtex item to obtain credit for an implemented algorithm used in the code.

    2683:      Not Collective - only what is registered on rank 0 of PETSC_COMM_WORLD will be printed

    2685:      Input Parameters:
    2686: +      cite - the bibtex item, formated to displayed on multiple lines nicely
    2687: -      set - a boolean variable initially set to PETSC_FALSE; this is used to insure only a single registration of the citation

    2689:    Level: intermediate

    2691:    Not available from Fortran

    2693:      Options Database:
    2694: .     -citations [filename]   - print out the bibtex entries for the given computation
    2695: @*/
    2696: PETSC_STATIC_INLINE PetscErrorCode PetscCitationsRegister(const char cit[],PetscBool *set)
    2697: {
    2698:   size_t         len;
    2699:   char           *vstring;

    2703:   if (set && *set) return(0);
    2704:   PetscStrlen(cit,&len);
    2705:   PetscSegBufferGet(PetscCitationsList,len,&vstring);
    2706:   PetscArraycpy(vstring,cit,len);
    2707:   if (set) *set = PETSC_TRUE;
    2708:   return(0);
    2709: }

    2711: PETSC_EXTERN PetscErrorCode PetscURLShorten(const char[],char[],size_t);
    2712: PETSC_EXTERN PetscErrorCode PetscGoogleDriveAuthorize(MPI_Comm,char[],char[],size_t);
    2713: PETSC_EXTERN PetscErrorCode PetscGoogleDriveRefresh(MPI_Comm,const char[],char[],size_t);
    2714: PETSC_EXTERN PetscErrorCode PetscGoogleDriveUpload(MPI_Comm,const char[],const char []);

    2716: PETSC_EXTERN PetscErrorCode PetscBoxAuthorize(MPI_Comm,char[],char[],size_t);
    2717: PETSC_EXTERN PetscErrorCode PetscBoxRefresh(MPI_Comm,const char[],char[],char[],size_t);

    2719: PETSC_EXTERN PetscErrorCode PetscGlobusGetTransfers(MPI_Comm,const char[],char[],size_t);

    2721: PETSC_EXTERN PetscErrorCode PetscTextBelt(MPI_Comm,const char[],const char[],PetscBool*);
    2722: PETSC_EXTERN PetscErrorCode PetscTellMyCell(MPI_Comm,const char[],const char[],PetscBool*);

    2724: PETSC_EXTERN PetscErrorCode PetscPullJSONValue(const char[],const char[],char[],size_t,PetscBool*);
    2725: PETSC_EXTERN PetscErrorCode PetscPushJSONValue(char[],const char[],const char[],size_t);

    2728: #if defined(PETSC_USE_DEBUG)
    2729: /*
    2730:    Verify that all processes in the communicator have called this from the same line of code
    2731:  */
    2732: PETSC_EXTERN PetscErrorCode PetscAllreduceBarrierCheck(MPI_Comm,PetscMPIInt,int,const char*,const char *);

    2734: /*MC
    2735:    MPIU_Allreduce - a PETSc replacement for MPI_Allreduce() that tries to determine if the call from all the MPI processes occur from the
    2736:                     same place in the PETSc code. This helps to detect bugs where different MPI processes follow different code paths
    2737:                     resulting in inconsistent and incorrect calls to MPI_Allreduce().

    2739:    Collective

    2741:    Synopsis:
    2742: #include <petscsys.h>
    2743:      PetscErrorCode MPIU_Allreduce(void *indata,void *outdata,PetscMPIInt count,MPI_Datatype datatype, MPI_Op op, MPI_Comm comm);

    2745:    Input Parameters:
    2746: +  indata - pointer to the input data to be reduced
    2747: .  count - the number of MPI data items in indata and outdata
    2748: .  datatype - the MPI datatype, for example MPI_INT
    2749: .  op - the MPI operation, for example MPI_SUM
    2750: -  comm - the MPI communicator on which the operation occurs

    2752:    Output Parameter:
    2753: .  outdata - the reduced values

    2755:    Notes:
    2756:    In optimized mode this directly calls MPI_Allreduce()

    2758:    Level: developer

    2760: .seealso: MPI_Allreduce()
    2761: M*/
    2762: #define MPIU_Allreduce(a,b,c,d,e,fcomm) (PetscAllreduceBarrierCheck(fcomm,c,__LINE__,PETSC_FUNCTION_NAME,__FILE__) || MPI_Allreduce(a,b,c,d,e,fcomm))
    2763: #else
    2764: #define MPIU_Allreduce(a,b,c,d,e,fcomm) MPI_Allreduce(a,b,c,d,e,fcomm)
    2765: #endif

    2767: #if defined(PETSC_HAVE_MPI_PROCESS_SHARED_MEMORY)
    2768: PETSC_EXTERN PetscErrorCode MPIU_Win_allocate_shared(MPI_Aint,PetscMPIInt,MPI_Info,MPI_Comm,void*,MPI_Win*);
    2769: PETSC_EXTERN PetscErrorCode MPIU_Win_shared_query(MPI_Win,PetscMPIInt,MPI_Aint*,PetscMPIInt*,void*);
    2770: #endif

    2772: /*
    2773:     Returned from PETSc functions that are called from MPI, such as related to attributes
    2774: */
    2775: PETSC_EXTERN PetscMPIInt PETSC_MPI_ERROR_CLASS;
    2776: PETSC_EXTERN PetscMPIInt PETSC_MPI_ERROR_CODE;

    2778: #endif