Actual source code: petscsys.h
petsc-3.7.7 2017-09-25
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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: */
      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_DESIRE_FEATURE_TEST_MACROS)
     18: /*
     19:    Feature test macros must be included before headers defined by IEEE Std 1003.1-2001
     20:    We only turn these in PETSc source files that require them by setting PETSC_DESIRE_FEATURE_TEST_MACROS
     21: */
     22: #if defined(PETSC__POSIX_C_SOURCE_200112L) && !defined(_POSIX_C_SOURCE)
     23: #define _POSIX_C_SOURCE 200112L
     24: #endif
     25: #if defined(PETSC__BSD_SOURCE) && !defined(_BSD_SOURCE)
     26: #define _BSD_SOURCE
     27: #endif
     28: #if defined(PETSC__DEFAULT_SOURCE) && !defined(_DEFAULT_SOURCE)
     29: #define _DEFAULT_SOURCE
     30: #endif
     31: #if defined(PETSC__GNU_SOURCE) && !defined(_GNU_SOURCE)
     32: #define _GNU_SOURCE
     33: #endif
     34: #endif

     36: /* ========================================================================== */
     37: /*
     38:    This facilitates using the C version of PETSc from C++ and the C++ version from C.
     39: */
     40: #if defined(__cplusplus)
     41: #  define PETSC_FUNCTION_NAME PETSC_FUNCTION_NAME_CXX
     42: #else
     43: #  define PETSC_FUNCTION_NAME PETSC_FUNCTION_NAME_C
     44: #endif

     46: /* ========================================================================== */
     47: /*
     48:    Since PETSc manages its own extern "C" handling users should never include PETSc include
     49:    files within extern "C". This will generate a compiler error if a user does put the include
     50:    file within an extern "C".
     51: */
     52: #if defined(__cplusplus)
     53: void assert_never_put_petsc_headers_inside_an_extern_c(int); void assert_never_put_petsc_headers_inside_an_extern_c(double);
     54: #endif

     56: #if defined(__cplusplus)
     57: #  define PETSC_RESTRICT PETSC_CXX_RESTRICT
     58: #else
     59: #  define PETSC_RESTRICT PETSC_C_RESTRICT
     60: #endif

     62: #if defined(__cplusplus)
     63: #  define PETSC_STATIC_INLINE PETSC_CXX_STATIC_INLINE
     64: #else
     65: #  define PETSC_STATIC_INLINE PETSC_C_STATIC_INLINE
     66: #endif

     68: #if defined(_WIN32) && defined(PETSC_USE_SHARED_LIBRARIES) /* For Win32 shared libraries */
     69: #  define  __declspec(dllexport)
     70: #  define PETSC_DLLIMPORT __declspec(dllimport)
     71: #  define PETSC_VISIBILITY_INTERNAL
     72: #elif defined(PETSC_USE_VISIBILITY_CXX) && defined(__cplusplus)
     73: #  define  __attribute__((visibility ("default")))
     74: #  define PETSC_DLLIMPORT __attribute__((visibility ("default")))
     75: #  define PETSC_VISIBILITY_INTERNAL __attribute__((visibility ("hidden")))
     76: #elif defined(PETSC_USE_VISIBILITY_C) && !defined(__cplusplus)
     77: #  define  __attribute__((visibility ("default")))
     78: #  define PETSC_DLLIMPORT __attribute__((visibility ("default")))
     79: #  define PETSC_VISIBILITY_INTERNAL __attribute__((visibility ("hidden")))
     80: #else
     81: #  define
     82: #  define PETSC_DLLIMPORT
     83: #  define PETSC_VISIBILITY_INTERNAL
     84: #endif

     86: #if defined(petsc_EXPORTS)      /* CMake defines this when building the shared library */
     87: #  define PETSC_VISIBILITY_PUBLIC
     88: #else  /* Win32 users need this to import symbols from petsc.dll */
     89: #  define PETSC_VISIBILITY_PUBLIC PETSC_DLLIMPORT
     90: #endif

     92: /*
     93:     Functions tagged with PETSC_EXTERN in the header files are
     94:   always defined as extern "C" when compiled with C++ so they may be
     95:   used from C and are always visible in the shared libraries
     96: */
     97: #if defined(__cplusplus)
     98: #define PETSC_EXTERN extern "C" PETSC_VISIBILITY_PUBLIC
     99: #define PETSC_EXTERN_TYPEDEF extern "C"
    100: #define PETSC_INTERN extern "C" PETSC_VISIBILITY_INTERNAL
    101: #else
    102: #define PETSC_EXTERN extern PETSC_VISIBILITY_PUBLIC
    103: #define PETSC_EXTERN_TYPEDEF
    104: #define PETSC_INTERN extern PETSC_VISIBILITY_INTERNAL
    105: #endif

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

    110: /* ========================================================================== */

    112: /*
    113:     Defines the interface to MPI allowing the use of all MPI functions.

    115:     PETSc does not use the C++ binding of MPI at ALL. The following flag
    116:     makes sure the C++ bindings are not included. The C++ bindings REQUIRE
    117:     putting mpi.h before ANY C++ include files, we cannot control this
    118:     with all PETSc users. Users who want to use the MPI C++ bindings can include
    119:     mpicxx.h directly in their code
    120: */
    121: #if !defined(MPICH_SKIP_MPICXX)
    122: #  define MPICH_SKIP_MPICXX 1
    123: #endif
    124: #if !defined(OMPI_SKIP_MPICXX)
    125: #  define OMPI_SKIP_MPICXX 1
    126: #endif
    127: #if !defined(OMPI_WANT_MPI_INTERFACE_WARNING)
    128: #  define OMPI_WANT_MPI_INTERFACE_WARNING 0
    129: #endif
    130: #include <mpi.h>

    132: /*
    133:    Perform various sanity checks that the correct mpi.h is being included at compile time.
    134:    This usually happens because
    135:       * either an unexpected mpi.h is in the default compiler path (i.e. in /usr/include) or
    136:       * an extra include path -I/something (which contains the unexpected mpi.h) is being passed to the compiler
    137: */
    138: #if defined(PETSC_HAVE_MPIUNI)
    139: #  if !defined(__MPIUNI_H)
    140: #    error "PETSc was configured with --with-mpi=0 but now appears to be compiling using a different mpi.h"
    141: #  endif
    142: #elif defined(PETSC_HAVE_MPICH_NUMVERSION)
    143: #  if !defined(MPICH_NUMVERSION)
    144: #    error "PETSc was configured with MPICH but now appears to be compiling using a non-MPICH mpi.h"
    145: #  elif MPICH_NUMVERSION != PETSC_HAVE_MPICH_NUMVERSION
    146: #    error "PETSc was configured with one MPICH mpi.h version but now appears to be compiling using a different MPICH mpi.h version"
    147: #  endif
    148: #elif defined(PETSC_HAVE_OMPI_MAJOR_VERSION)
    149: #  if !defined(OMPI_MAJOR_VERSION)
    150: #    error "PETSc was configured with OpenMPI but now appears to be compiling using a non-OpenMPI mpi.h"
    151: #  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)
    152: #    error "PETSc was configured with one OpenMPI mpi.h version but now appears to be compiling using a different OpenMPI mpi.h version"
    153: #  endif
    154: #endif

    156: /*
    157:     Need to put stdio.h AFTER mpi.h for MPICH2 with C++ compiler
    158:     see the top of mpicxx.h in the MPICH2 distribution.
    159: */
    160: #include <stdio.h>

    162: /* MSMPI on 32bit windows requires this yukky hack - that breaks MPI standard compliance */
    163: #if !defined(MPIAPI)
    164: #define MPIAPI
    165: #endif

    167: /*
    168:    Support for Clang (>=3.2) matching type tag arguments with void* buffer types.
    169:    This allows the compiler to detect cases where the MPI datatype argument passed to a MPI routine
    170:    does not match the actual type of the argument being passed in
    171: */
    172: #if defined(__has_attribute) && defined(works_with_const_which_is_not_true)
    173: #  if __has_attribute(argument_with_type_tag) && __has_attribute(pointer_with_type_tag) && __has_attribute(type_tag_for_datatype)
    174: #    define PetscAttrMPIPointerWithType(bufno,typeno) __attribute__((pointer_with_type_tag(MPI,bufno,typeno)))
    175: #    define PetscAttrMPITypeTag(type)                 __attribute__((type_tag_for_datatype(MPI,type)))
    176: #    define PetscAttrMPITypeTagLayoutCompatible(type) __attribute__((type_tag_for_datatype(MPI,type,layout_compatible)))
    177: #  endif
    178: #endif
    179: #if !defined(PetscAttrMPIPointerWithType)
    180: #  define PetscAttrMPIPointerWithType(bufno,typeno)
    181: #  define PetscAttrMPITypeTag(type)
    182: #  define PetscAttrMPITypeTagLayoutCompatible(type)
    183: #endif

    185: /*MC
    186:     PetscErrorCode - datatype used for return error code from almost all PETSc functions

    188:     Level: beginner

    190: .seealso: CHKERRQ, SETERRQ
    191: M*/
    192: typedef int PetscErrorCode;

    194: /*MC

    196:     PetscClassId - A unique id used to identify each PETSc class.

    198:     Notes: Use PetscClassIdRegister() to obtain a new value for a new class being created. Usually
    199:          XXXInitializePackage() calls it for each class it defines.

    201:     Developer Notes: Internal integer stored in the _p_PetscObject data structure.
    202:          These are all computed by an offset from the lowest one, PETSC_SMALLEST_CLASSID.

    204:     Level: developer

    206: .seealso: PetscClassIdRegister(), PetscLogEventRegister(), PetscHeaderCreate()
    207: M*/
    208: typedef int PetscClassId;

    211: /*MC
    212:     PetscMPIInt - datatype used to represent 'int' parameters to MPI functions.

    214:     Level: intermediate

    216:     Notes: usually this is the same as PetscInt, but if PETSc was built with --with-64-bit-indices but
    217:            standard C/Fortran integers are 32 bit then this is NOT the same as PetscInt it remains 32 bit

    219:     PetscMPIIntCast(a,&b) checks if the given PetscInt a will fit in a PetscMPIInt, if not it
    220:       generates a PETSC_ERR_ARG_OUTOFRANGE error.

    222: .seealso: PetscBLASInt, PetscInt, PetscMPIIntCast()

    224: M*/
    225: typedef int PetscMPIInt;

    227: /*MC
    228:     PetscEnum - datatype used to pass enum types within PETSc functions.

    230:     Level: intermediate

    232: .seealso: PetscOptionsGetEnum(), PetscOptionsEnum(), PetscBagRegisterEnum()
    233: M*/
    234: typedef enum { ENUM_DUMMY } PetscEnum;
    235: PETSC_EXTERN MPI_Datatype MPIU_ENUM PetscAttrMPITypeTag(PetscEnum);

    237: #if defined(PETSC_HAVE_STDINT_H)
    238: #include <stdint.h>
    239: #endif
    240: #if defined (PETSC_HAVE_INTTYPES_H)
    242: #include <inttypes.h>
    243: # if !defined(PRId64)
    244: # define PRId64 "ld"
    245: # endif
    246: #endif

    248: /*MC
    249:     PetscInt - PETSc type that represents integer - used primarily to
    250:       represent size of arrays and indexing into arrays. Its size can be configured with the option
    251:       --with-64-bit-indices - to be either 32bit or 64bit [default 32 bit ints]

    253:    Level: intermediate

    255: .seealso: PetscScalar, PetscBLASInt, PetscMPIInt
    256: M*/
    257: #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 */
    258: typedef int64_t Petsc64bitInt;
    259: # define MPIU_INT64 MPI_INT64_T
    260: # define PetscInt64_FMT PRId64
    261: #elif (PETSC_SIZEOF_LONG_LONG == 8)
    262: typedef long long Petsc64bitInt;
    263: # define MPIU_INT64 MPI_LONG_LONG_INT
    264: # define PetscInt64_FMT "lld"
    265: #elif defined(PETSC_HAVE___INT64)
    266: typedef __int64 Petsc64bitInt;
    267: # define MPIU_INT64 MPI_INT64_T
    268: # define PetscInt64_FMT "ld"
    269: #else
    270: #error "cannot determine Petsc64bitInt type"
    271: #endif
    272: #if defined(PETSC_USE_64BIT_INDICES)
    273: typedef Petsc64bitInt PetscInt;
    274: #define MPIU_INT MPIU_INT64
    275: #define PetscInt_FMT PetscInt64_FMT
    276: #else
    277: typedef int PetscInt;
    278: #define MPIU_INT MPI_INT
    279: #define PetscInt_FMT "d"
    280: #endif

    282: /*MC
    283:     PetscBLASInt - datatype used to represent 'int' parameters to BLAS/LAPACK functions.

    285:     Level: intermediate

    287:     Notes: usually this is the same as PetscInt, but if PETSc was built with --with-64-bit-indices but
    288:            standard C/Fortran integers are 32 bit then this is NOT the same as PetscInt it remains 32 bit
    289:            (except on very rare BLAS/LAPACK implementations that support 64 bit integers see the note below).

    291:     PetscErrorCode PetscBLASIntCast(a,&b) checks if the given PetscInt a will fit in a PetscBLASInt, if not it
    292:       generates a PETSC_ERR_ARG_OUTOFRANGE error

    294:     Installation Notes: The 64bit versions of MATLAB ship with BLAS and LAPACK that use 64 bit integers for sizes etc,
    295:      if you run ./configure with the option
    296:      --with-blas-lapack-lib=[/Applications/MATLAB_R2010b.app/bin/maci64/libmwblas.dylib,/Applications/MATLAB_R2010b.app/bin/maci64/libmwlapack.dylib]
    297:      but you need to also use --known-64-bit-blas-indices.

    299:         MKL also ships with 64 bit integer versions of the BLAS and LAPACK, if you select those you must also ./configure with --known-64-bit-blas-indices

    301:      Developer Notes: Eventually ./configure should automatically determine the size of the integers used by BLAS/LAPACK.

    303:      External packages such as hypre, ML, SuperLU etc do not provide any support for passing 64 bit integers to BLAS/LAPACK so cannot
    304:      be used with PETSc if you have set PetscBLASInt to long int.

    306: .seealso: PetscMPIInt, PetscInt, PetscBLASIntCast()

    308: M*/
    309: #if defined(PETSC_HAVE_64BIT_BLAS_INDICES)
    310: typedef Petsc64bitInt PetscBLASInt;
    311: #else
    312: typedef int PetscBLASInt;
    313: #endif

    315: /*EC

    317:     PetscPrecision - indicates what precision the object is using. This is currently not used.

    319:     Level: advanced

    321: .seealso: PetscObjectSetPrecision()
    322: E*/
    323: typedef enum { PETSC_PRECISION_SINGLE=4,PETSC_PRECISION_DOUBLE=8 } PetscPrecision;
    324: PETSC_EXTERN const char *PetscPrecisions[];

    326: /*
    327:     For the rare cases when one needs to send a size_t object with MPI
    328: */
    329: #if (PETSC_SIZEOF_SIZE_T) == (PETSC_SIZEOF_INT)
    330: #define MPIU_SIZE_T MPI_UNSIGNED
    331: #elif  (PETSC_SIZEOF_SIZE_T) == (PETSC_SIZEOF_LONG)
    332: #define MPIU_SIZE_T MPI_UNSIGNED_LONG
    333: #elif  (PETSC_SIZEOF_SIZE_T) == (PETSC_SIZEOF_LONG_LONG)
    334: #define MPIU_SIZE_T MPI_UNSIGNED_LONG_LONG
    335: #else
    336: #error "Unknown size for size_t! Send us a bugreport at petsc-maint@mcs.anl.gov"
    337: #endif

    339: /*
    340:       You can use PETSC_STDOUT as a replacement of stdout. You can also change
    341:     the value of PETSC_STDOUT to redirect all standard output elsewhere
    342: */
    343: PETSC_EXTERN FILE* PETSC_STDOUT;

    345: /*
    346:       You can use PETSC_STDERR as a replacement of stderr. You can also change
    347:     the value of PETSC_STDERR to redirect all standard error elsewhere
    348: */
    349: PETSC_EXTERN FILE* PETSC_STDERR;

    351: /*MC
    352:     PetscUnlikely - hints the compiler that the given condition is usually FALSE

    354:     Synopsis:
    355:     #include <petscsys.h>
    356:     PetscBool  PetscUnlikely(PetscBool  cond)

    358:     Not Collective

    360:     Input Parameters:
    361: .   cond - condition or expression

    363:     Note: This returns the same truth value, it is only a hint to compilers that the resulting
    364:     branch is unlikely.

    366:     Level: advanced

    368: .seealso: PetscLikely(), CHKERRQ
    369: M*/

    371: /*MC
    372:     PetscLikely - hints the compiler that the given condition is usually TRUE

    374:     Synopsis:
    375:     #include <petscsys.h>
    376:     PetscBool  PetscUnlikely(PetscBool  cond)

    378:     Not Collective

    380:     Input Parameters:
    381: .   cond - condition or expression

    383:     Note: This returns the same truth value, it is only a hint to compilers that the resulting
    384:     branch is likely.

    386:     Level: advanced

    388: .seealso: PetscUnlikely()
    389: M*/
    390: #if defined(PETSC_HAVE_BUILTIN_EXPECT)
    391: #  define PetscUnlikely(cond)   __builtin_expect(!!(cond),0)
    392: #  define PetscLikely(cond)     __builtin_expect(!!(cond),1)
    393: #else
    394: #  define PetscUnlikely(cond)   (cond)
    395: #  define PetscLikely(cond)     (cond)
    396: #endif

    398: /*
    399:     Declare extern C stuff after including external header files
    400: */

    403: /*
    404:        Basic PETSc constants
    405: */

    407: /*E
    408:     PetscBool  - Logical variable. Actually an int in C and a logical in Fortran.

    410:    Level: beginner

    412:    Developer Note: Why have PetscBool , why not use bool in C? The problem is that K and R C, C99 and C++ all have different mechanisms for
    413:       boolean values. It is not easy to have a simple macro that that will work properly in all circumstances with all three mechanisms.

    415: .seealso: PETSC_TRUE, PETSC_FALSE, PetscNot()
    416: E*/
    417: typedef enum { PETSC_FALSE,PETSC_TRUE } PetscBool;
    418: PETSC_EXTERN const char *const PetscBools[];
    419: PETSC_EXTERN MPI_Datatype MPIU_BOOL PetscAttrMPITypeTag(PetscBool);

    421: /*
    422:     Defines some elementary mathematics functions and constants.
    423: */
    424: #include <petscmath.h>

    426: /*E
    427:     PetscCopyMode  - Determines how an array passed to certain functions is copied or retained

    429:    Level: beginner

    431: $   PETSC_COPY_VALUES - the array values are copied into new space, the user is free to reuse or delete the passed in array
    432: $   PETSC_OWN_POINTER - the array values are NOT copied, the object takes ownership of the array and will free it later, the user cannot change or
    433: $                       delete the array. The array MUST have been obtained with PetscMalloc(). Hence this mode cannot be used in Fortran.
    434: $   PETSC_USE_POINTER - the array values are NOT copied, the object uses the array but does NOT take ownership of the array. The user cannot use
    435:                         the array but the user must delete the array after the object is destroyed.

    437: E*/
    438: typedef enum { PETSC_COPY_VALUES, PETSC_OWN_POINTER, PETSC_USE_POINTER} PetscCopyMode;
    439: PETSC_EXTERN const char *const PetscCopyModes[];

    441: /*MC
    442:     PETSC_FALSE - False value of PetscBool

    444:     Level: beginner

    446:     Note: Zero integer

    448: .seealso: PetscBool, PETSC_TRUE
    449: M*/

    451: /*MC
    452:     PETSC_TRUE - True value of PetscBool

    454:     Level: beginner

    456:     Note: Nonzero integer

    458: .seealso: PetscBool, PETSC_FALSE
    459: M*/

    461: /*MC
    462:     PETSC_NULL - standard way of passing in a null or array or pointer. This is deprecated in C/C++ simply use NULL

    464:    Level: beginner

    466:    Notes: accepted by many PETSc functions to not set a parameter and instead use
    467:           some default

    469:           This macro does not exist in Fortran; you must use PETSC_NULL_INTEGER,
    470:           PETSC_NULL_DOUBLE_PRECISION, PETSC_NULL_FUNCTION, PETSC_NULL_OBJECT etc

    472: .seealso: PETSC_DECIDE, PETSC_DEFAULT, PETSC_IGNORE, PETSC_DETERMINE

    474: M*/
    475: #define PETSC_NULL           NULL

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

    480:    Level: beginner

    482:    Note: accepted by many PETSc functions to not set a parameter and instead use
    483:           some default

    485:    Fortran Notes: This macro does not exist in Fortran; you must use PETSC_NULL_INTEGER,
    486:           PETSC_NULL_DOUBLE_PRECISION etc

    488: .seealso: PETSC_DECIDE, PETSC_DEFAULT, PETSC_NULL, PETSC_DETERMINE

    490: M*/
    491: #define PETSC_IGNORE         NULL

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

    497:    Level: beginner

    499: .seealso: PETSC_NULL, PETSC_DEFAULT, PETSC_IGNORE, PETSC_DETERMINE

    501: M*/
    502: #define PETSC_DECIDE  -1

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

    508:    Level: beginner

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

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

    515: M*/
    516: #define PETSC_DETERMINE PETSC_DECIDE

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

    522:    Level: beginner

    524:    Fortran Notes: You need to use PETSC_DEFAULT_INTEGER or PETSC_DEFAULT_REAL.

    526: .seealso: PETSC_DECIDE, PETSC_IGNORE, PETSC_DETERMINE

    528: M*/
    529: #define PETSC_DEFAULT  -2

    531: /*MC
    532:     PETSC_COMM_WORLD - the equivalent of the MPI_COMM_WORLD communicator which represents
    533:            all the processs that PETSc knows about.

    535:    Level: beginner

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

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

    545: .seealso: PETSC_COMM_SELF

    547: M*/
    548: PETSC_EXTERN MPI_Comm PETSC_COMM_WORLD;

    550: /*MC
    551:     PETSC_COMM_SELF - This is always MPI_COMM_SELF

    553:    Level: beginner

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

    557: .seealso: PETSC_COMM_WORLD

    559: M*/
    560: #define PETSC_COMM_SELF MPI_COMM_SELF

    562: PETSC_EXTERN PetscBool PetscBeganMPI;
    563: PETSC_EXTERN PetscBool PetscInitializeCalled;
    564: PETSC_EXTERN PetscBool PetscFinalizeCalled;
    565: PETSC_EXTERN PetscBool PetscCUSPSynchronize;
    566: PETSC_EXTERN PetscBool PetscViennaCLSynchronize;
    567: PETSC_EXTERN PetscBool PetscCUDASynchronize;

    569: PETSC_EXTERN PetscErrorCode PetscSetHelpVersionFunctions(PetscErrorCode (*)(MPI_Comm),PetscErrorCode (*)(MPI_Comm));
    570: PETSC_EXTERN PetscErrorCode PetscCommDuplicate(MPI_Comm,MPI_Comm*,int*);
    571: PETSC_EXTERN PetscErrorCode PetscCommDestroy(MPI_Comm*);

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

    576:    Synopsis:
    577:     #include <petscsys.h>
    578:    PetscErrorCode PetscMalloc(size_t m,void **result)

    580:    Not Collective

    582:    Input Parameter:
    583: .  m - number of bytes to allocate

    585:    Output Parameter:
    586: .  result - memory allocated

    588:    Level: beginner

    590:    Notes:
    591:    Memory is always allocated at least double aligned

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

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

    597:   Concepts: memory allocation

    599: M*/
    600: #define PetscMalloc(a,b)  ((*PetscTrMalloc)((a),__LINE__,PETSC_FUNCTION_NAME,__FILE__,(void**)(b)))

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

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

    609:    Not Collective

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

    614:    Level: developer

    616: .seealso: PetscMallocAlign()

    618:   Concepts: memory allocation
    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 in 1st chunk  (may be zero)

    634:    Output Parameter:
    635: .  r1 - memory allocated in first chunk

    637:    Level: developer

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

    641:   Concepts: memory allocation

    643: M*/
    644: #define PetscMalloc1(m1,r1) PetscMalloc((m1)*sizeof(**(r1)),r1)

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

    649:    Synopsis:
    650:     #include <petscsys.h>
    651:    PetscErrorCode PetscCalloc1(size_t m1,type **r1)

    653:    Not Collective

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

    658:    Output Parameter:
    659: .  r1 - memory allocated in first chunk

    661:    Level: developer

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

    665:   Concepts: memory allocation

    667: M*/
    668: #define PetscCalloc1(m1,r1) (PetscMalloc1((m1),r1) || PetscMemzero(*(r1),(m1)*sizeof(**(r1))))

    670: /*MC
    671:    PetscMalloc2 - Allocates 2 arrays of memory both aligned to PETSC_MEMALIGN

    673:    Synopsis:
    674:     #include <petscsys.h>
    675:    PetscErrorCode PetscMalloc2(size_t m1,type **r1,size_t m2,type **r2)

    677:    Not Collective

    679:    Input Parameter:
    680: +  m1 - number of elements to allocate in 1st chunk  (may be zero)
    681: -  m2 - number of elements to allocate in 2nd chunk  (may be zero)

    683:    Output Parameter:
    684: +  r1 - memory allocated in first chunk
    685: -  r2 - memory allocated in second chunk

    687:    Level: developer

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

    691:   Concepts: memory allocation

    693: M*/
    694: #if !defined(PETSC_USE_MALLOC_COALESCED)
    695: #define PetscMalloc2(m1,r1,m2,r2) (PetscMalloc1((m1),(r1)) || PetscMalloc1((m2),(r2)))
    696: #else
    697: #define PetscMalloc2(m1,r1,m2,r2) ((((m1)+(m2)) ? (*(r2) = 0,PetscMalloc((m1)*sizeof(**(r1))+(m2)*sizeof(**(r2))+(PETSC_MEMALIGN-1),r1)) : 0) \
    698:                                    || (*(void**)(r2) = PetscAddrAlign(*(r1)+(m1)),0) \
    699:                                    || (!(m1) ? (*(r1) = 0,0) : 0) || (!(m2) ? (*(r2) = 0,0) : 0))
    700: #endif

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

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

    709:    Not Collective

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

    715:    Output Parameter:
    716: +  r1 - memory allocated in first chunk
    717: -  r2 - memory allocated in second chunk

    719:    Level: developer

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

    723:   Concepts: memory allocation
    724: M*/
    725: #define PetscCalloc2(m1,r1,m2,r2) (PetscMalloc2((m1),(r1),(m2),(r2)) || PetscMemzero(*(r1),(m1)*sizeof(**(r1))) || PetscMemzero(*(r2),(m2)*sizeof(**(r2))))

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

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

    734:    Not Collective

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

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

    746:    Level: developer

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

    750:   Concepts: memory allocation

    752: M*/
    753: #if !defined(PETSC_USE_MALLOC_COALESCED)
    754: #define PetscMalloc3(m1,r1,m2,r2,m3,r3) (PetscMalloc1((m1),(r1)) || PetscMalloc1((m2),(r2)) || PetscMalloc1((m3),(r3)))
    755: #else
    756: #define PetscMalloc3(m1,r1,m2,r2,m3,r3) ((((m1)+(m2)+(m3)) ? (*(r2) = 0,*(r3) = 0,PetscMalloc((m1)*sizeof(**(r1))+(m2)*sizeof(**(r2))+(m3)*sizeof(**(r3))+2*(PETSC_MEMALIGN-1),r1)) : 0) \
    757:                                          || (*(void**)(r2) = PetscAddrAlign(*(r1)+(m1)),*(void**)(r3) = PetscAddrAlign(*(r2)+(m2)),0) \
    758:                                          || (!(m1) ? (*(r1) = 0,0) : 0) || (!(m2) ? (*(r2) = 0,0) : 0) || (!(m3) ? (*(r3) = 0,0) : 0))
    759: #endif

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

    764:    Synopsis:
    765:     #include <petscsys.h>
    766:    PetscErrorCode PetscCalloc3(size_t m1,type **r1,size_t m2,type **r2,size_t m3,type **r3)

    768:    Not Collective

    770:    Input Parameter:
    771: +  m1 - number of elements to allocate in 1st chunk  (may be zero)
    772: .  m2 - number of elements to allocate in 2nd chunk  (may be zero)
    773: -  m3 - number of elements to allocate in 3rd chunk  (may be zero)

    775:    Output Parameter:
    776: +  r1 - memory allocated in first chunk
    777: .  r2 - memory allocated in second chunk
    778: -  r3 - memory allocated in third chunk

    780:    Level: developer

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

    784:   Concepts: memory allocation
    785: M*/
    786: #define PetscCalloc3(m1,r1,m2,r2,m3,r3)                                 \
    787:   (PetscMalloc3((m1),(r1),(m2),(r2),(m3),(r3))                          \
    788:    || PetscMemzero(*(r1),(m1)*sizeof(**(r1))) || PetscMemzero(*(r2),(m2)*sizeof(**(r2))) || PetscMemzero(*(r3),(m3)*sizeof(**(r3))))

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

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

    797:    Not Collective

    799:    Input Parameter:
    800: +  m1 - number of elements to allocate in 1st chunk  (may be zero)
    801: .  m2 - number of elements to allocate in 2nd chunk  (may be zero)
    802: .  m3 - number of elements to allocate in 3rd chunk  (may be zero)
    803: -  m4 - number of elements to allocate in 4th chunk  (may be zero)

    805:    Output Parameter:
    806: +  r1 - memory allocated in first chunk
    807: .  r2 - memory allocated in second chunk
    808: .  r3 - memory allocated in third chunk
    809: -  r4 - memory allocated in fourth chunk

    811:    Level: developer

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

    815:   Concepts: memory allocation

    817: M*/
    818: #if !defined(PETSC_USE_MALLOC_COALESCED)
    819: #define PetscMalloc4(m1,r1,m2,r2,m3,r3,m4,r4) (PetscMalloc1((m1),(r1)) || PetscMalloc1((m2),(r2)) || PetscMalloc1((m3),(r3)) || PetscMalloc1((m4),(r4)))
    820: #else
    821: #define PetscMalloc4(m1,r1,m2,r2,m3,r3,m4,r4)                           \
    822:   ((((m1)+(m2)+(m3)+(m4)) ? (*(r2) = 0, *(r3) = 0, *(r4) = 0,PetscMalloc((m1)*sizeof(**(r1))+(m2)*sizeof(**(r2))+(m3)*sizeof(**(r3))+(m4)*sizeof(**(r4))+3*(PETSC_MEMALIGN-1),r1)) : 0) \
    823:    || (*(void**)(r2) = PetscAddrAlign(*(r1)+(m1)),*(void**)(r3) = PetscAddrAlign(*(r2)+(m2)),*(void**)(r4) = PetscAddrAlign(*(r3)+(m3)),0) \
    824:    || (!(m1) ? (*(r1) = 0,0) : 0) || (!(m2) ? (*(r2) = 0,0) : 0) || (!(m3) ? (*(r3) = 0,0) : 0) || (!(m4) ? (*(r4) = 0,0) : 0))
    825: #endif

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

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

    834:    Not Collective

    836:    Input Parameter:
    837: +  m1 - number of elements to allocate in 1st chunk  (may be zero)
    838: .  m2 - number of elements to allocate in 2nd chunk  (may be zero)
    839: .  m3 - number of elements to allocate in 3rd chunk  (may be zero)
    840: -  m4 - number of elements to allocate in 4th chunk  (may be zero)

    842:    Output Parameter:
    843: +  r1 - memory allocated in first chunk
    844: .  r2 - memory allocated in second chunk
    845: .  r3 - memory allocated in third chunk
    846: -  r4 - memory allocated in fourth chunk

    848:    Level: developer

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

    852:   Concepts: memory allocation

    854: M*/
    855: #define PetscCalloc4(m1,r1,m2,r2,m3,r3,m4,r4)                           \
    856:   (PetscMalloc4(m1,r1,m2,r2,m3,r3,m4,r4)                                \
    857:    || PetscMemzero(*(r1),(m1)*sizeof(**(r1))) || PetscMemzero(*(r2),(m2)*sizeof(**(r2))) || PetscMemzero(*(r3),(m3)*sizeof(**(r3))) \
    858:    || PetscMemzero(*(r4),(m4)*sizeof(**(r4))))

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

    863:    Synopsis:
    864:     #include <petscsys.h>
    865:    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)

    867:    Not Collective

    869:    Input Parameter:
    870: +  m1 - number of elements to allocate in 1st chunk  (may be zero)
    871: .  m2 - number of elements to allocate in 2nd chunk  (may be zero)
    872: .  m3 - number of elements to allocate in 3rd chunk  (may be zero)
    873: .  m4 - number of elements to allocate in 4th chunk  (may be zero)
    874: -  m5 - number of elements to allocate in 5th chunk  (may be zero)

    876:    Output Parameter:
    877: +  r1 - memory allocated in first chunk
    878: .  r2 - memory allocated in second chunk
    879: .  r3 - memory allocated in third chunk
    880: .  r4 - memory allocated in fourth chunk
    881: -  r5 - memory allocated in fifth chunk

    883:    Level: developer

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

    887:   Concepts: memory allocation

    889: M*/
    890: #if !defined(PETSC_USE_MALLOC_COALESCED)
    891: #define PetscMalloc5(m1,r1,m2,r2,m3,r3,m4,r4,m5,r5) (PetscMalloc1((m1),(r1)) || PetscMalloc1((m2),(r2)) || PetscMalloc1((m3),(r3)) || PetscMalloc1((m4),(r4)) || PetscMalloc1((m5),(r5)))
    892: #else
    893: #define PetscMalloc5(m1,r1,m2,r2,m3,r3,m4,r4,m5,r5)      \
    894:   ((((m1)+(m2)+(m3)+(m4)+(m5)) ? (*(r2) = 0, *(r3) = 0, *(r4) = 0,*(r5) = 0,PetscMalloc((m1)*sizeof(**(r1))+(m2)*sizeof(**(r2))+(m3)*sizeof(**(r3))+(m4)*sizeof(**(r4))+(m5)*sizeof(**(r5))+4*(PETSC_MEMALIGN-1),r1)) : 0) \
    895:    || (*(void**)(r2) = PetscAddrAlign(*(r1)+(m1)),*(void**)(r3) = PetscAddrAlign(*(r2)+(m2)),*(void**)(r4) = PetscAddrAlign(*(r3)+(m3)),*(void**)(r5) = PetscAddrAlign(*(r4)+(m4)),0) \
    896:    || (!(m1) ? (*(r1) = 0,0) : 0) || (!(m2) ? (*(r2) = 0,0) : 0) || (!(m3) ? (*(r3) = 0,0) : 0) || (!(m4) ? (*(r4) = 0,0) : 0) || (!(m5) ? (*(r5) = 0,0) : 0))
    897: #endif

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

    902:    Synopsis:
    903:     #include <petscsys.h>
    904:    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)

    906:    Not Collective

    908:    Input Parameter:
    909: +  m1 - number of elements to allocate in 1st chunk  (may be zero)
    910: .  m2 - number of elements to allocate in 2nd chunk  (may be zero)
    911: .  m3 - number of elements to allocate in 3rd chunk  (may be zero)
    912: .  m4 - number of elements to allocate in 4th chunk  (may be zero)
    913: -  m5 - number of elements to allocate in 5th chunk  (may be zero)

    915:    Output Parameter:
    916: +  r1 - memory allocated in first chunk
    917: .  r2 - memory allocated in second chunk
    918: .  r3 - memory allocated in third chunk
    919: .  r4 - memory allocated in fourth chunk
    920: -  r5 - memory allocated in fifth chunk

    922:    Level: developer

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

    926:   Concepts: memory allocation

    928: M*/
    929: #define PetscCalloc5(m1,r1,m2,r2,m3,r3,m4,r4,m5,r5)                     \
    930:   (PetscMalloc5(m1,r1,m2,r2,m3,r3,m4,r4,m5,r5)                          \
    931:    || PetscMemzero(*(r1),(m1)*sizeof(**(r1))) || PetscMemzero(*(r2),(m2)*sizeof(**(r2))) || PetscMemzero(*(r3),(m3)*sizeof(**(r3))) \
    932:    || PetscMemzero(*(r4),(m4)*sizeof(**(r4))) || PetscMemzero(*(r5),(m5)*sizeof(**(r5))))

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

    937:    Synopsis:
    938:     #include <petscsys.h>
    939:    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)

    941:    Not Collective

    943:    Input Parameter:
    944: +  m1 - number of elements to allocate in 1st chunk  (may be zero)
    945: .  m2 - number of elements to allocate in 2nd chunk  (may be zero)
    946: .  m3 - number of elements to allocate in 3rd chunk  (may be zero)
    947: .  m4 - number of elements to allocate in 4th chunk  (may be zero)
    948: .  m5 - number of elements to allocate in 5th chunk  (may be zero)
    949: -  m6 - number of elements to allocate in 6th chunk  (may be zero)

    951:    Output Parameter:
    952: +  r1 - memory allocated in first chunk
    953: .  r2 - memory allocated in second chunk
    954: .  r3 - memory allocated in third chunk
    955: .  r4 - memory allocated in fourth chunk
    956: .  r5 - memory allocated in fifth chunk
    957: -  r6 - memory allocated in sixth chunk

    959:    Level: developer

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

    963:   Concepts: memory allocation

    965: M*/
    966: #if !defined(PETSC_USE_MALLOC_COALESCED)
    967: #define PetscMalloc6(m1,r1,m2,r2,m3,r3,m4,r4,m5,r5,m6,r6) (PetscMalloc1((m1),(r1)) || PetscMalloc1((m2),(r2)) || PetscMalloc1((m3),(r3)) || PetscMalloc1((m4),(r4)) || PetscMalloc1((m5),(r5)) || PetscMalloc1((m6),(r6)))
    968: #else
    969: #define PetscMalloc6(m1,r1,m2,r2,m3,r3,m4,r4,m5,r5,m6,r6) \
    970:   ((((m1)+(m2)+(m3)+(m4)+(m5)+(m6)) ? (*(r2) = 0, *(r3) = 0, *(r4) = 0,*(r5) = 0,*(r6) = 0,PetscMalloc((m1)*sizeof(**(r1))+(m2)*sizeof(**(r2))+(m3)*sizeof(**(r3))+(m4)*sizeof(**(r4))+(m5)*sizeof(**(r5))+(m6)*sizeof(**(r6))+5*(PETSC_MEMALIGN-1),r1)) : 0) \
    971:    || (*(void**)(r2) = PetscAddrAlign(*(r1)+(m1)),*(void**)(r3) = PetscAddrAlign(*(r2)+(m2)),*(void**)(r4) = PetscAddrAlign(*(r3)+(m3)),*(void**)(r5) = PetscAddrAlign(*(r4)+(m4)),*(void**)(r6) = PetscAddrAlign(*(r5)+(m5)),0) \
    972:    || (!(m1) ? (*(r1) = 0,0) : 0) || (!(m2) ? (*(r2) = 0,0) : 0) || (!(m3) ? (*(r3) = 0,0) : 0) || (!(m4) ? (*(r4) = 0,0) : 0) || (!(m5) ? (*(r5) = 0,0) : 0) || (!(m6) ? (*(r6) = 0,0) : 0))
    973: #endif

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

    978:    Synopsis:
    979:     #include <petscsys.h>
    980:    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)

    982:    Not Collective

    984:    Input Parameter:
    985: +  m1 - number of elements to allocate in 1st chunk  (may be zero)
    986: .  m2 - number of elements to allocate in 2nd chunk  (may be zero)
    987: .  m3 - number of elements to allocate in 3rd chunk  (may be zero)
    988: .  m4 - number of elements to allocate in 4th chunk  (may be zero)
    989: .  m5 - number of elements to allocate in 5th chunk  (may be zero)
    990: -  m6 - number of elements to allocate in 6th chunk  (may be zero)

    992:    Output Parameter:
    993: +  r1 - memory allocated in first chunk
    994: .  r2 - memory allocated in second chunk
    995: .  r3 - memory allocated in third chunk
    996: .  r4 - memory allocated in fourth chunk
    997: .  r5 - memory allocated in fifth chunk
    998: -  r6 - memory allocated in sixth chunk

    1000:    Level: developer

    1002: .seealso: PetscFree(), PetscNew(), PetscMalloc(), PetscMalloc2(), PetscMalloc6(), PetscFree6()

    1004:   Concepts: memory allocation
    1005: M*/
    1006: #define PetscCalloc6(m1,r1,m2,r2,m3,r3,m4,r4,m5,r5,m6,r6)               \
    1007:   (PetscMalloc6(m1,r1,m2,r2,m3,r3,m4,r4,m5,r5,m6,r6)                    \
    1008:    || PetscMemzero(*(r1),(m1)*sizeof(**(r1))) || PetscMemzero(*(r2),(m2)*sizeof(**(r2))) || PetscMemzero(*(r3),(m3)*sizeof(**(r3))) \
    1009:    || PetscMemzero(*(r4),(m4)*sizeof(**(r4))) || PetscMemzero(*(r5),(m5)*sizeof(**(r5))) || PetscMemzero(*(r6),(m6)*sizeof(**(r6))))

    1011: /*MC
    1012:    PetscMalloc7 - Allocates 7 arrays of memory, all aligned to PETSC_MEMALIGN

    1014:    Synopsis:
    1015:     #include <petscsys.h>
    1016:    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)

    1018:    Not Collective

    1020:    Input Parameter:
    1021: +  m1 - number of elements to allocate in 1st chunk  (may be zero)
    1022: .  m2 - number of elements to allocate in 2nd chunk  (may be zero)
    1023: .  m3 - number of elements to allocate in 3rd chunk  (may be zero)
    1024: .  m4 - number of elements to allocate in 4th chunk  (may be zero)
    1025: .  m5 - number of elements to allocate in 5th chunk  (may be zero)
    1026: .  m6 - number of elements to allocate in 6th chunk  (may be zero)
    1027: -  m7 - number of elements to allocate in 7th chunk  (may be zero)

    1029:    Output Parameter:
    1030: +  r1 - memory allocated in first chunk
    1031: .  r2 - memory allocated in second chunk
    1032: .  r3 - memory allocated in third chunk
    1033: .  r4 - memory allocated in fourth chunk
    1034: .  r5 - memory allocated in fifth chunk
    1035: .  r6 - memory allocated in sixth chunk
    1036: -  r7 - memory allocated in seventh chunk

    1038:    Level: developer

    1040: .seealso: PetscFree(), PetscNew(), PetscMalloc(), PetscMalloc2(), PetscCalloc7(), PetscFree7()

    1042:   Concepts: memory allocation

    1044: M*/
    1045: #if !defined(PETSC_USE_MALLOC_COALESCED)
    1046: #define PetscMalloc7(m1,r1,m2,r2,m3,r3,m4,r4,m5,r5,m6,r6,m7,r7) (PetscMalloc1((m1),(r1)) || PetscMalloc1((m2),(r2)) || PetscMalloc1((m3),(r3)) || PetscMalloc1((m4),(r4)) || PetscMalloc1((m5),(r5)) || PetscMalloc1((m6),(r6)) || PetscMalloc1((m7),(r7)))
    1047: #else
    1048: #define PetscMalloc7(m1,r1,m2,r2,m3,r3,m4,r4,m5,r5,m6,r6,m7,r7) \
    1049:   ((((m1)+(m2)+(m3)+(m4)+(m5)+(m6)+(m7)) ? (*(r2) = 0, *(r3) = 0, *(r4) = 0,*(r5) = 0,*(r6) = 0,*(r7) = 0,PetscMalloc((m1)*sizeof(**(r1))+(m2)*sizeof(**(r2))+(m3)*sizeof(**(r3))+(m4)*sizeof(**(r4))+(m5)*sizeof(**(r5))+(m6)*sizeof(**(r6))+(m7)*sizeof(**(r7))+6*(PETSC_MEMALIGN-1),r1)) : 0) \
    1050:    || (*(void**)(r2) = PetscAddrAlign(*(r1)+(m1)),*(void**)(r3) = PetscAddrAlign(*(r2)+(m2)),*(void**)(r4) = PetscAddrAlign(*(r3)+(m3)),*(void**)(r5) = PetscAddrAlign(*(r4)+(m4)),*(void**)(r6) = PetscAddrAlign(*(r5)+(m5)),*(void**)(r7) = PetscAddrAlign(*(r6)+(m6)),0) \
    1051:    || (!(m1) ? (*(r1) = 0,0) : 0) || (!(m2) ? (*(r2) = 0,0) : 0) || (!(m3) ? (*(r3) = 0,0) : 0) || (!(m4) ? (*(r4) = 0,0) : 0) || (!(m5) ? (*(r5) = 0,0) : 0) || (!(m6) ? (*(r6) = 0,0) : 0) || (!(m7) ? (*(r7) = 0,0) : 0))
    1052: #endif

    1054: /*MC
    1055:    PetscCalloc7 - Allocates 7 cleared (zeroed) arrays of memory, all aligned to PETSC_MEMALIGN

    1057:    Synopsis:
    1058:     #include <petscsys.h>
    1059:    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)

    1061:    Not Collective

    1063:    Input Parameter:
    1064: +  m1 - number of elements to allocate in 1st chunk  (may be zero)
    1065: .  m2 - number of elements to allocate in 2nd chunk  (may be zero)
    1066: .  m3 - number of elements to allocate in 3rd chunk  (may be zero)
    1067: .  m4 - number of elements to allocate in 4th chunk  (may be zero)
    1068: .  m5 - number of elements to allocate in 5th chunk  (may be zero)
    1069: .  m6 - number of elements to allocate in 6th chunk  (may be zero)
    1070: -  m7 - number of elements to allocate in 7th chunk  (may be zero)

    1072:    Output Parameter:
    1073: +  r1 - memory allocated in first chunk
    1074: .  r2 - memory allocated in second chunk
    1075: .  r3 - memory allocated in third chunk
    1076: .  r4 - memory allocated in fourth chunk
    1077: .  r5 - memory allocated in fifth chunk
    1078: .  r6 - memory allocated in sixth chunk
    1079: -  r7 - memory allocated in seventh chunk

    1081:    Level: developer

    1083: .seealso: PetscFree(), PetscNew(), PetscMalloc(), PetscMalloc2(), PetscMalloc7(), PetscFree7()

    1085:   Concepts: memory allocation
    1086: M*/
    1087: #define PetscCalloc7(m1,r1,m2,r2,m3,r3,m4,r4,m5,r5,m6,r6,m7,r7)         \
    1088:   (PetscMalloc7(m1,r1,m2,r2,m3,r3,m4,r4,m5,r5,m6,r6,m7,r7)              \
    1089:    || PetscMemzero(*(r1),(m1)*sizeof(**(r1))) || PetscMemzero(*(r2),(m2)*sizeof(**(r2))) || PetscMemzero(*(r3),(m3)*sizeof(**(r3))) \
    1090:    || PetscMemzero(*(r4),(m4)*sizeof(**(r4))) || PetscMemzero(*(r5),(m5)*sizeof(**(r5))) || PetscMemzero(*(r6),(m6)*sizeof(**(r6))) \
    1091:    || PetscMemzero(*(r7),(m7)*sizeof(**(r7))))

    1093: /*MC
    1094:    PetscNew - Allocates memory of a particular type, zeros the memory! Aligned to PETSC_MEMALIGN

    1096:    Synopsis:
    1097:     #include <petscsys.h>
    1098:    PetscErrorCode PetscNew(type **result)

    1100:    Not Collective

    1102:    Output Parameter:
    1103: .  result - memory allocated, sized to match pointer type

    1105:    Level: beginner

    1107: .seealso: PetscFree(), PetscMalloc(), PetscNewLog()

    1109:   Concepts: memory allocation

    1111: M*/
    1112: #define PetscNew(b)      PetscCalloc1(1,(b))

    1114: /*MC
    1115:    PetscNewLog - Allocates memory of a type matching pointer, zeros the memory! Aligned to PETSC_MEMALIGN. Associates the memory allocated
    1116:          with the given object using PetscLogObjectMemory().

    1118:    Synopsis:
    1119:     #include <petscsys.h>
    1120:    PetscErrorCode PetscNewLog(PetscObject obj,type **result)

    1122:    Not Collective

    1124:    Input Parameter:
    1125: .  obj - object memory is logged to

    1127:    Output Parameter:
    1128: .  result - memory allocated, sized to match pointer type

    1130:    Level: developer

    1132: .seealso: PetscFree(), PetscMalloc(), PetscNew(), PetscLogObjectMemory()

    1134:   Concepts: memory allocation

    1136: M*/
    1137: #define PetscNewLog(o,b) (PetscNew((b)) || PetscLogObjectMemory((PetscObject)o,sizeof(**(b))))

    1139: /*MC
    1140:    PetscFree - Frees memory

    1142:    Synopsis:
    1143:     #include <petscsys.h>
    1144:    PetscErrorCode PetscFree(void *memory)

    1146:    Not Collective

    1148:    Input Parameter:
    1149: .   memory - memory to free (the pointer is ALWAYS set to 0 upon sucess)

    1151:    Level: beginner

    1153:    Notes:
    1154:    Memory must have been obtained with PetscNew() or PetscMalloc().
    1155:    It is safe to call PetscFree() on a NULL pointer.

    1157: .seealso: PetscNew(), PetscMalloc(), PetscFreeVoid()

    1159:   Concepts: memory allocation

    1161: M*/
    1162: #define PetscFree(a)   ((*PetscTrFree)((void*)(a),__LINE__,PETSC_FUNCTION_NAME,__FILE__) || ((a) = 0,0))

    1164: /*MC
    1165:    PetscFreeVoid - Frees memory

    1167:    Synopsis:
    1168:     #include <petscsys.h>
    1169:    void PetscFreeVoid(void *memory)

    1171:    Not Collective

    1173:    Input Parameter:
    1174: .   memory - memory to free

    1176:    Level: beginner

    1178:    Notes: This is different from PetscFree() in that no error code is returned

    1180: .seealso: PetscFree(), PetscNew(), PetscMalloc()

    1182:   Concepts: memory allocation

    1184: M*/
    1185: #define PetscFreeVoid(a) ((*PetscTrFree)((a),__LINE__,PETSC_FUNCTION_NAME,__FILE__),(a) = 0)

    1188: /*MC
    1189:    PetscFree2 - Frees 2 chunks of memory obtained with PetscMalloc2()

    1191:    Synopsis:
    1192:     #include <petscsys.h>
    1193:    PetscErrorCode PetscFree2(void *memory1,void *memory2)

    1195:    Not Collective

    1197:    Input Parameter:
    1198: +   memory1 - memory to free
    1199: -   memory2 - 2nd memory to free

    1201:    Level: developer

    1203:    Notes: Memory must have been obtained with PetscMalloc2()

    1205: .seealso: PetscNew(), PetscMalloc(), PetscMalloc2(), PetscFree()

    1207:   Concepts: memory allocation

    1209: M*/
    1210: #if !defined(PETSC_USE_MALLOC_COALESCED)
    1211: #define PetscFree2(m1,m2)   (PetscFree(m2) || PetscFree(m1))
    1212: #else
    1213: #define PetscFree2(m1,m2)   ((m1) ? ((m2)=0,PetscFree(m1)) : ((m1)=0,PetscFree(m2)))
    1214: #endif

    1216: /*MC
    1217:    PetscFree3 - Frees 3 chunks of memory obtained with PetscMalloc3()

    1219:    Synopsis:
    1220:     #include <petscsys.h>
    1221:    PetscErrorCode PetscFree3(void *memory1,void *memory2,void *memory3)

    1223:    Not Collective

    1225:    Input Parameter:
    1226: +   memory1 - memory to free
    1227: .   memory2 - 2nd memory to free
    1228: -   memory3 - 3rd memory to free

    1230:    Level: developer

    1232:    Notes: Memory must have been obtained with PetscMalloc3()

    1234: .seealso: PetscNew(), PetscMalloc(), PetscMalloc2(), PetscFree(), PetscMalloc3()

    1236:   Concepts: memory allocation

    1238: M*/
    1239: #if !defined(PETSC_USE_MALLOC_COALESCED)
    1240: #define PetscFree3(m1,m2,m3)   (PetscFree(m3) || PetscFree(m2) || PetscFree(m1))
    1241: #else
    1242: #define PetscFree3(m1,m2,m3)   ((m1) ? ((m3)=0,(m2)=0,PetscFree(m1)) : ((m2) ? ((m3)=0,(m1)=0,PetscFree(m2)) : ((m2)=0,(m1)=0,PetscFree(m3))))
    1243: #endif

    1245: /*MC
    1246:    PetscFree4 - Frees 4 chunks of memory obtained with PetscMalloc4()

    1248:    Synopsis:
    1249:     #include <petscsys.h>
    1250:    PetscErrorCode PetscFree4(void *m1,void *m2,void *m3,void *m4)

    1252:    Not Collective

    1254:    Input Parameter:
    1255: +   m1 - memory to free
    1256: .   m2 - 2nd memory to free
    1257: .   m3 - 3rd memory to free
    1258: -   m4 - 4th memory to free

    1260:    Level: developer

    1262:    Notes: Memory must have been obtained with PetscMalloc4()

    1264: .seealso: PetscNew(), PetscMalloc(), PetscMalloc2(), PetscFree(), PetscMalloc3(), PetscMalloc4()

    1266:   Concepts: memory allocation

    1268: M*/
    1269: #if !defined(PETSC_USE_MALLOC_COALESCED)
    1270: #define PetscFree4(m1,m2,m3,m4)   (PetscFree(m4) || PetscFree(m3) || PetscFree(m2) || PetscFree(m1))
    1271: #else
    1272: #define PetscFree4(m1,m2,m3,m4)   ((m1) ? ((m4)=0,(m3)=0,(m2)=0,PetscFree(m1)) : ((m2) ? ((m4)=0,(m3)=0,(m1)=0,PetscFree(m2)) : ((m3) ? ((m4)=0,(m2)=0,(m1)=0,PetscFree(m3)) : ((m3)=0,(m2)=0,(m1)=0,PetscFree(m4)))))
    1273: #endif

    1275: /*MC
    1276:    PetscFree5 - Frees 5 chunks of memory obtained with PetscMalloc5()

    1278:    Synopsis:
    1279:     #include <petscsys.h>
    1280:    PetscErrorCode PetscFree5(void *m1,void *m2,void *m3,void *m4,void *m5)

    1282:    Not Collective

    1284:    Input Parameter:
    1285: +   m1 - memory to free
    1286: .   m2 - 2nd memory to free
    1287: .   m3 - 3rd memory to free
    1288: .   m4 - 4th memory to free
    1289: -   m5 - 5th memory to free

    1291:    Level: developer

    1293:    Notes: Memory must have been obtained with PetscMalloc5()

    1295: .seealso: PetscNew(), PetscMalloc(), PetscMalloc2(), PetscFree(), PetscMalloc3(), PetscMalloc4(), PetscMalloc5()

    1297:   Concepts: memory allocation

    1299: M*/
    1300: #if !defined(PETSC_USE_MALLOC_COALESCED)
    1301: #define PetscFree5(m1,m2,m3,m4,m5)   (PetscFree(m5) || PetscFree(m4) || PetscFree(m3) || PetscFree(m2) || PetscFree(m1))
    1302: #else
    1303: #define PetscFree5(m1,m2,m3,m4,m5)   ((m1) ? ((m5)=0,(m4)=0,(m3)=0,(m2)=0,PetscFree(m1)) : ((m2) ? ((m5)=0,(m4)=0,(m3)=0,(m1)=0,PetscFree(m2)) : ((m3) ? ((m5)=0,(m4)=0,(m2)=0,(m1)=0,PetscFree(m3)) : \
    1304:                                      ((m4) ? ((m5)=0,(m3)=0,(m2)=0,(m1)=0,PetscFree(m4)) : ((m4)=0,(m3)=0,(m2)=0,(m1)=0,PetscFree(m5))))))
    1305: #endif

    1308: /*MC
    1309:    PetscFree6 - Frees 6 chunks of memory obtained with PetscMalloc6()

    1311:    Synopsis:
    1312:     #include <petscsys.h>
    1313:    PetscErrorCode PetscFree6(void *m1,void *m2,void *m3,void *m4,void *m5,void *m6)

    1315:    Not Collective

    1317:    Input Parameter:
    1318: +   m1 - memory to free
    1319: .   m2 - 2nd memory to free
    1320: .   m3 - 3rd memory to free
    1321: .   m4 - 4th memory to free
    1322: .   m5 - 5th memory to free
    1323: -   m6 - 6th memory to free

    1326:    Level: developer

    1328:    Notes: Memory must have been obtained with PetscMalloc6()

    1330: .seealso: PetscNew(), PetscMalloc(), PetscMalloc2(), PetscFree(), PetscMalloc3(), PetscMalloc4(), PetscMalloc5(), PetscMalloc6()

    1332:   Concepts: memory allocation

    1334: M*/
    1335: #if !defined(PETSC_USE_MALLOC_COALESCED)
    1336: #define PetscFree6(m1,m2,m3,m4,m5,m6)   (PetscFree(m6) || PetscFree(m5) || PetscFree(m4) || PetscFree(m3) || PetscFree(m2) || PetscFree(m1))
    1337: #else
    1338: #define PetscFree6(m1,m2,m3,m4,m5,m6)   ((m1) ? ((m6)=0,(m5)=0,(m4)=0,(m3)=0,(m2)=0,PetscFree(m1)) : ((m2) ? ((m6)=0,(m5)=0,(m4)=0,(m3)=0,(m1)=0,PetscFree(m2)) : \
    1339:                                         ((m3) ? ((m6)=0,(m5)=0,(m4)=0,(m2)=0,(m1)=0,PetscFree(m3)) : ((m4) ? ((m6)=0,(m5)=0,(m3)=0,(m2)=0,(m1)=0,PetscFree(m4)) : \
    1340:                                         ((m5) ? ((m6)=0,(m4)=0,(m3)=0,(m2)=0,(m1)=0,PetscFree(m5)) : ((m5)=0,(m4)=0,(m3)=0,(m2)=0,(m1)=0,PetscFree(m6)))))))
    1341: #endif

    1343: /*MC
    1344:    PetscFree7 - Frees 7 chunks of memory obtained with PetscMalloc7()

    1346:    Synopsis:
    1347:     #include <petscsys.h>
    1348:    PetscErrorCode PetscFree7(void *m1,void *m2,void *m3,void *m4,void *m5,void *m6,void *m7)

    1350:    Not Collective

    1352:    Input Parameter:
    1353: +   m1 - memory to free
    1354: .   m2 - 2nd memory to free
    1355: .   m3 - 3rd memory to free
    1356: .   m4 - 4th memory to free
    1357: .   m5 - 5th memory to free
    1358: .   m6 - 6th memory to free
    1359: -   m7 - 7th memory to free

    1362:    Level: developer

    1364:    Notes: Memory must have been obtained with PetscMalloc7()

    1366: .seealso: PetscNew(), PetscMalloc(), PetscMalloc2(), PetscFree(), PetscMalloc3(), PetscMalloc4(), PetscMalloc5(), PetscMalloc6(),
    1367:           PetscMalloc7()

    1369:   Concepts: memory allocation

    1371: M*/
    1372: #if !defined(PETSC_USE_MALLOC_COALESCED)
    1373: #define PetscFree7(m1,m2,m3,m4,m5,m6,m7)   (PetscFree(m7) || PetscFree(m6) || PetscFree(m5) || PetscFree(m4) || PetscFree(m3) || PetscFree(m2) || PetscFree(m1))
    1374: #else
    1375: #define PetscFree7(m1,m2,m3,m4,m5,m6,m7)   ((m1) ? ((m7)=0,(m6)=0,(m5)=0,(m4)=0,(m3)=0,(m2)=0,PetscFree(m1)) : ((m2) ? ((m7)=0,(m6)=0,(m5)=0,(m4)=0,(m3)=0,(m1)=0,PetscFree(m2)) : \
    1376:                                            ((m3) ? ((m7)=0,(m6)=0,(m5)=0,(m4)=0,(m2)=0,(m1)=0,PetscFree(m3)) : ((m4) ? ((m7)=0,(m6)=0,(m5)=0,(m3)=0,(m2)=0,(m1)=0,PetscFree(m4)) : \
    1377:                                            ((m5) ? ((m7)=0,(m6)=0,(m4)=0,(m3)=0,(m2)=0,(m1)=0,PetscFree(m5)) : ((m6) ? ((m7)=0,(m5)=0,(m4)=0,(m3)=0,(m2)=0,(m1)=0,PetscFree(m6)) : \
    1378:                                                    ((m6)=0,(m5)=0,(m4)=0,(m3)=0,(m2)=0,(m1)=0,PetscFree(m7))))))))
    1379: #endif

    1381: PETSC_EXTERN PetscErrorCode (*PetscTrMalloc)(size_t,int,const char[],const char[],void**);
    1382: PETSC_EXTERN PetscErrorCode (*PetscTrFree)(void*,int,const char[],const char[]);
    1383: PETSC_EXTERN PetscErrorCode PetscMallocSet(PetscErrorCode (*)(size_t,int,const char[],const char[],void**),PetscErrorCode (*)(void*,int,const char[],const char[]));
    1384: PETSC_EXTERN PetscErrorCode PetscMallocClear(void);

    1386: /*
    1387:     PetscLogDouble variables are used to contain double precision numbers
    1388:   that are not used in the numerical computations, but rather in logging,
    1389:   timing etc.
    1390: */
    1391: typedef double PetscLogDouble;
    1392: #define MPIU_PETSCLOGDOUBLE MPI_DOUBLE

    1394: /*
    1395:    Routines for tracing memory corruption/bleeding with default PETSc memory allocation
    1396: */
    1397: PETSC_EXTERN PetscErrorCode PetscMallocDump(FILE *);
    1398: PETSC_EXTERN PetscErrorCode PetscMallocDumpLog(FILE *);
    1399: PETSC_EXTERN PetscErrorCode PetscMallocGetCurrentUsage(PetscLogDouble *);
    1400: PETSC_EXTERN PetscErrorCode PetscMallocGetMaximumUsage(PetscLogDouble *);
    1401: PETSC_EXTERN PetscErrorCode PetscMallocDebug(PetscBool);
    1402: PETSC_EXTERN PetscErrorCode PetscMallocGetDebug(PetscBool*);
    1403: PETSC_EXTERN PetscErrorCode PetscMallocValidate(int,const char[],const char[]);
    1404: PETSC_EXTERN PetscErrorCode PetscMallocSetDumpLog(void);
    1405: PETSC_EXTERN PetscErrorCode PetscMallocSetDumpLogThreshold(PetscLogDouble);
    1406: PETSC_EXTERN PetscErrorCode PetscMallocGetDumpLog(PetscBool*);

    1408: /*E
    1409:     PetscDataType - Used for handling different basic data types.

    1411:    Level: beginner

    1413:    Developer comment: It would be nice if we could always just use MPI Datatypes, why can we not?

    1415: .seealso: PetscBinaryRead(), PetscBinaryWrite(), PetscDataTypeToMPIDataType(),
    1416:           PetscDataTypeGetSize()

    1418: E*/
    1419: typedef enum {PETSC_INT = 0,PETSC_DOUBLE = 1,PETSC_COMPLEX = 2, PETSC_LONG = 3 ,PETSC_SHORT = 4,PETSC_FLOAT = 5,
    1420:               PETSC_CHAR = 6,PETSC_BIT_LOGICAL = 7,PETSC_ENUM = 8,PETSC_BOOL=9, PETSC___FLOAT128 = 10,PETSC_OBJECT = 11, PETSC_FUNCTION = 12, PETSC_STRING = 12} PetscDataType;
    1421: PETSC_EXTERN const char *const PetscDataTypes[];

    1423: #if defined(PETSC_USE_COMPLEX)
    1424: #define  PETSC_SCALAR  PETSC_COMPLEX
    1425: #else
    1426: #if defined(PETSC_USE_REAL_SINGLE)
    1427: #define  PETSC_SCALAR  PETSC_FLOAT
    1428: #elif defined(PETSC_USE_REAL___FLOAT128)
    1429: #define  PETSC_SCALAR  PETSC___FLOAT128
    1430: #else
    1431: #define  PETSC_SCALAR  PETSC_DOUBLE
    1432: #endif
    1433: #endif
    1434: #if defined(PETSC_USE_REAL_SINGLE)
    1435: #define  PETSC_REAL  PETSC_FLOAT
    1436: #elif defined(PETSC_USE_REAL___FLOAT128)
    1437: #define  PETSC_REAL  PETSC___FLOAT128
    1438: #else
    1439: #define  PETSC_REAL  PETSC_DOUBLE
    1440: #endif
    1441: #define  PETSC_FORTRANADDR  PETSC_LONG

    1443: PETSC_EXTERN PetscErrorCode PetscDataTypeToMPIDataType(PetscDataType,MPI_Datatype*);
    1444: PETSC_EXTERN PetscErrorCode PetscMPIDataTypeToPetscDataType(MPI_Datatype,PetscDataType*);
    1445: PETSC_EXTERN PetscErrorCode PetscDataTypeGetSize(PetscDataType,size_t*);
    1446: PETSC_EXTERN PetscErrorCode PetscDataTypeFromString(const char*,PetscDataType*,PetscBool*);

    1448: /*
    1449:     Basic memory and string operations. These are usually simple wrappers
    1450:    around the basic Unix system calls, but a few of them have additional
    1451:    functionality and/or error checking.
    1452: */
    1453: PETSC_EXTERN PetscErrorCode PetscBitMemcpy(void*,PetscInt,const void*,PetscInt,PetscInt,PetscDataType);
    1454: PETSC_EXTERN PetscErrorCode PetscMemmove(void*,void *,size_t);
    1455: PETSC_EXTERN PetscErrorCode PetscMemcmp(const void*,const void*,size_t,PetscBool  *);
    1456: PETSC_EXTERN PetscErrorCode PetscStrlen(const char[],size_t*);
    1457: PETSC_EXTERN PetscErrorCode PetscStrToArray(const char[],char,int*,char ***);
    1458: PETSC_EXTERN PetscErrorCode PetscStrToArrayDestroy(int,char **);
    1459: PETSC_EXTERN PetscErrorCode PetscStrcmp(const char[],const char[],PetscBool  *);
    1460: PETSC_EXTERN PetscErrorCode PetscStrgrt(const char[],const char[],PetscBool  *);
    1461: PETSC_EXTERN PetscErrorCode PetscStrcasecmp(const char[],const char[],PetscBool *);
    1462: PETSC_EXTERN PetscErrorCode PetscStrncmp(const char[],const char[],size_t,PetscBool *);
    1463: PETSC_EXTERN PetscErrorCode PetscStrcpy(char[],const char[]);
    1464: PETSC_EXTERN PetscErrorCode PetscStrcat(char[],const char[]);
    1465: PETSC_EXTERN PetscErrorCode PetscStrncat(char[],const char[],size_t);
    1466: PETSC_EXTERN PetscErrorCode PetscStrncpy(char[],const char[],size_t);
    1467: PETSC_EXTERN PetscErrorCode PetscStrchr(const char[],char,char *[]);
    1468: PETSC_EXTERN PetscErrorCode PetscStrtolower(char[]);
    1469: PETSC_EXTERN PetscErrorCode PetscStrtoupper(char[]);
    1470: PETSC_EXTERN PetscErrorCode PetscStrrchr(const char[],char,char *[]);
    1471: PETSC_EXTERN PetscErrorCode PetscStrstr(const char[],const char[],char *[]);
    1472: PETSC_EXTERN PetscErrorCode PetscStrrstr(const char[],const char[],char *[]);
    1473: PETSC_EXTERN PetscErrorCode PetscStrendswith(const char[],const char[],PetscBool*);
    1474: PETSC_EXTERN PetscErrorCode PetscStrbeginswith(const char[],const char[],PetscBool*);
    1475: PETSC_EXTERN PetscErrorCode PetscStrendswithwhich(const char[],const char *const*,PetscInt*);
    1476: PETSC_EXTERN PetscErrorCode PetscStrallocpy(const char[],char *[]);
    1477: PETSC_EXTERN PetscErrorCode PetscStrArrayallocpy(const char *const*,char***);
    1478: PETSC_EXTERN PetscErrorCode PetscStrArrayDestroy(char***);
    1479: PETSC_EXTERN PetscErrorCode PetscStrNArrayallocpy(PetscInt,const char *const*,char***);
    1480: PETSC_EXTERN PetscErrorCode PetscStrNArrayDestroy(PetscInt,char***);
    1481: PETSC_EXTERN PetscErrorCode PetscStrreplace(MPI_Comm,const char[],char[],size_t);

    1483: PETSC_EXTERN void PetscStrcmpNoError(const char[],const char[],PetscBool  *);

    1485: /*S
    1486:     PetscToken - 'Token' used for managing tokenizing strings

    1488:   Level: intermediate

    1490: .seealso: PetscTokenCreate(), PetscTokenFind(), PetscTokenDestroy()
    1491: S*/
    1492: typedef struct _p_PetscToken* PetscToken;

    1494: PETSC_EXTERN PetscErrorCode PetscTokenCreate(const char[],const char,PetscToken*);
    1495: PETSC_EXTERN PetscErrorCode PetscTokenFind(PetscToken,char *[]);
    1496: PETSC_EXTERN PetscErrorCode PetscTokenDestroy(PetscToken*);

    1498: PETSC_EXTERN PetscErrorCode PetscEListFind(PetscInt,const char *const*,const char*,PetscInt*,PetscBool*);
    1499: PETSC_EXTERN PetscErrorCode PetscEnumFind(const char *const*,const char*,PetscEnum*,PetscBool*);

    1501: /*
    1502:    These are MPI operations for MPI_Allreduce() etc
    1503: */
    1504: PETSC_EXTERN MPI_Op PetscMaxSum_Op;
    1505: #if (defined(PETSC_HAVE_COMPLEX) && !defined(PETSC_HAVE_MPI_C_DOUBLE_COMPLEX)) || defined(PETSC_USE_REAL___FLOAT128)
    1506: PETSC_EXTERN MPI_Op MPIU_SUM;
    1507: #else
    1508: #define MPIU_SUM MPI_SUM
    1509: #endif
    1510: #if defined(PETSC_USE_REAL___FLOAT128)
    1511: PETSC_EXTERN MPI_Op MPIU_MAX;
    1512: PETSC_EXTERN MPI_Op MPIU_MIN;
    1513: #else
    1514: #define MPIU_MAX MPI_MAX
    1515: #define MPIU_MIN MPI_MIN
    1516: #endif
    1517: PETSC_EXTERN PetscErrorCode PetscMaxSum(MPI_Comm,const PetscInt[],PetscInt*,PetscInt*);

    1519: PETSC_EXTERN PetscErrorCode MPIULong_Send(void*,PetscInt,MPI_Datatype,PetscMPIInt,PetscMPIInt,MPI_Comm);
    1520: PETSC_EXTERN PetscErrorCode MPIULong_Recv(void*,PetscInt,MPI_Datatype,PetscMPIInt,PetscMPIInt,MPI_Comm);

    1522: /*S
    1523:      PetscObject - any PETSc object, PetscViewer, Mat, Vec, KSP etc

    1525:    Level: beginner

    1527:    Note: This is the base class from which all PETSc objects are derived from.

    1529: .seealso:  PetscObjectDestroy(), PetscObjectView(), PetscObjectGetName(), PetscObjectSetName(), PetscObjectReference(), PetscObjectDereference()
    1530: S*/
    1531: typedef struct _p_PetscObject* PetscObject;

    1533: /*MC
    1534:     PetscObjectId - unique integer Id for a PetscObject

    1536:     Level: developer

    1538:     Notes: Unlike pointer values, object ids are never reused.

    1540: .seealso: PetscObjectState, PetscObjectGetId()
    1541: M*/
    1542: typedef Petsc64bitInt PetscObjectId;

    1544: /*MC
    1545:     PetscObjectState - integer state for a PetscObject

    1547:     Level: developer

    1549:     Notes:
    1550:     Object state is always-increasing and (for objects that track state) can be used to determine if an object has
    1551:     changed since the last time you interacted with it.  It is 64-bit so that it will not overflow for a very long time.

    1553: .seealso: PetscObjectId, PetscObjectStateGet(), PetscObjectStateIncrease(), PetscObjectStateSet()
    1554: M*/
    1555: typedef Petsc64bitInt PetscObjectState;

    1557: /*S
    1558:      PetscFunctionList - Linked list of functions, possibly stored in dynamic libraries, accessed
    1559:       by string name

    1561:    Level: advanced

    1563: .seealso:  PetscFunctionListAdd(), PetscFunctionListDestroy(), PetscOpFlist
    1564: S*/
    1565: typedef struct _n_PetscFunctionList *PetscFunctionList;

    1567: /*E
    1568:   PetscFileMode - Access mode for a file.

    1570:   Level: beginner

    1572: $  FILE_MODE_READ - open a file at its beginning for reading
    1573: $  FILE_MODE_WRITE - open a file at its beginning for writing (will create if the file does not exist)
    1574: $  FILE_MODE_APPEND - open a file at end for writing
    1575: $  FILE_MODE_UPDATE - open a file for updating, meaning for reading and writing
    1576: $  FILE_MODE_APPEND_UPDATE - open a file for updating, meaning for reading and writing, at the end

    1578: .seealso: PetscViewerFileSetMode()
    1579: E*/
    1580: typedef enum {FILE_MODE_READ, FILE_MODE_WRITE, FILE_MODE_APPEND, FILE_MODE_UPDATE, FILE_MODE_APPEND_UPDATE} PetscFileMode;
    1581: extern const char *const PetscFileModes[];

    1583: /*
    1584:     Defines PETSc error handling.
    1585: */
    1586: #include <petscerror.h>

    1588: #define PETSC_SMALLEST_CLASSID  1211211
    1589: PETSC_EXTERN PetscClassId PETSC_LARGEST_CLASSID;
    1590: PETSC_EXTERN PetscClassId PETSC_OBJECT_CLASSID;
    1591: PETSC_EXTERN PetscErrorCode PetscClassIdRegister(const char[],PetscClassId *);

    1593: /*
    1594:    Routines that get memory usage information from the OS
    1595: */
    1596: PETSC_EXTERN PetscErrorCode PetscMemoryGetCurrentUsage(PetscLogDouble *);
    1597: PETSC_EXTERN PetscErrorCode PetscMemoryGetMaximumUsage(PetscLogDouble *);
    1598: PETSC_EXTERN PetscErrorCode PetscMemorySetGetMaximumUsage(void);
    1599: PETSC_EXTERN PetscErrorCode PetscMemoryTrace(const char[]);

    1601: PETSC_EXTERN PetscErrorCode PetscInfoAllow(PetscBool ,const char []);
    1602: PETSC_EXTERN PetscErrorCode PetscSleep(PetscReal);

    1604: /*
    1605:    Initialization of PETSc
    1606: */
    1607: PETSC_EXTERN PetscErrorCode PetscInitialize(int*,char***,const char[],const char[]);
    1608: PETSC_EXTERN PetscErrorCode PetscInitializeNoPointers(int,char**,const char[],const char[]);
    1609: PETSC_EXTERN PetscErrorCode PetscInitializeNoArguments(void);
    1610: PETSC_EXTERN PetscErrorCode PetscInitialized(PetscBool *);
    1611: PETSC_EXTERN PetscErrorCode PetscFinalized(PetscBool *);
    1612: PETSC_EXTERN PetscErrorCode PetscFinalize(void);
    1613: PETSC_EXTERN PetscErrorCode PetscInitializeFortran(void);
    1614: PETSC_EXTERN PetscErrorCode PetscGetArgs(int*,char ***);
    1615: PETSC_EXTERN PetscErrorCode PetscGetArguments(char ***);
    1616: PETSC_EXTERN PetscErrorCode PetscFreeArguments(char **);

    1618: PETSC_EXTERN PetscErrorCode PetscEnd(void);
    1619: PETSC_EXTERN PetscErrorCode PetscSysInitializePackage(void);

    1621: PETSC_EXTERN PetscErrorCode PetscPythonInitialize(const char[],const char[]);
    1622: PETSC_EXTERN PetscErrorCode PetscPythonFinalize(void);
    1623: PETSC_EXTERN PetscErrorCode PetscPythonPrintError(void);
    1624: PETSC_EXTERN PetscErrorCode PetscPythonMonitorSet(PetscObject,const char[]);

    1626: /*
    1627:      These are so that in extern C code we can caste function pointers to non-extern C
    1628:    function pointers. Since the regular C++ code expects its function pointers to be C++
    1629: */
    1630: PETSC_EXTERN_TYPEDEF typedef void (**PetscVoidStarFunction)(void);
    1631: PETSC_EXTERN_TYPEDEF typedef void (*PetscVoidFunction)(void);
    1632: PETSC_EXTERN_TYPEDEF typedef PetscErrorCode (*PetscErrorCodeFunction)(void);

    1634: /*
    1635:     Functions that can act on any PETSc object.
    1636: */
    1637: PETSC_EXTERN PetscErrorCode PetscObjectDestroy(PetscObject*);
    1638: PETSC_EXTERN PetscErrorCode PetscObjectGetComm(PetscObject,MPI_Comm *);
    1639: PETSC_EXTERN PetscErrorCode PetscObjectGetClassId(PetscObject,PetscClassId *);
    1640: PETSC_EXTERN PetscErrorCode PetscObjectGetClassName(PetscObject,const char *[]);
    1641: PETSC_EXTERN PetscErrorCode PetscObjectSetType(PetscObject,const char []);
    1642: PETSC_EXTERN PetscErrorCode PetscObjectSetPrecision(PetscObject,PetscPrecision);
    1643: PETSC_EXTERN PetscErrorCode PetscObjectGetType(PetscObject,const char *[]);
    1644: PETSC_EXTERN PetscErrorCode PetscObjectSetName(PetscObject,const char[]);
    1645: PETSC_EXTERN PetscErrorCode PetscObjectGetName(PetscObject,const char*[]);
    1646: PETSC_EXTERN PetscErrorCode PetscObjectSetTabLevel(PetscObject,PetscInt);
    1647: PETSC_EXTERN PetscErrorCode PetscObjectGetTabLevel(PetscObject,PetscInt*);
    1648: PETSC_EXTERN PetscErrorCode PetscObjectIncrementTabLevel(PetscObject,PetscObject,PetscInt);
    1649: PETSC_EXTERN PetscErrorCode PetscObjectReference(PetscObject);
    1650: PETSC_EXTERN PetscErrorCode PetscObjectGetReference(PetscObject,PetscInt*);
    1651: PETSC_EXTERN PetscErrorCode PetscObjectDereference(PetscObject);
    1652: PETSC_EXTERN PetscErrorCode PetscObjectGetNewTag(PetscObject,PetscMPIInt *);
    1653: PETSC_EXTERN PetscErrorCode PetscObjectCompose(PetscObject,const char[],PetscObject);
    1654: PETSC_EXTERN PetscErrorCode PetscObjectRemoveReference(PetscObject,const char[]);
    1655: PETSC_EXTERN PetscErrorCode PetscObjectQuery(PetscObject,const char[],PetscObject *);
    1656: PETSC_EXTERN PetscErrorCode PetscObjectComposeFunction_Private(PetscObject,const char[],void (*)(void));
    1657: #define PetscObjectComposeFunction(a,b,d) PetscObjectComposeFunction_Private(a,b,(PetscVoidFunction)(d))
    1658: PETSC_EXTERN PetscErrorCode PetscObjectSetFromOptions(PetscObject);
    1659: PETSC_EXTERN PetscErrorCode PetscObjectSetUp(PetscObject);
    1660: PETSC_EXTERN PetscErrorCode PetscObjectSetPrintedOptions(PetscObject);
    1661: PETSC_EXTERN PetscErrorCode PetscObjectInheritPrintedOptions(PetscObject,PetscObject);
    1662: PETSC_EXTERN PetscErrorCode PetscCommGetNewTag(MPI_Comm,PetscMPIInt *);

    1664: #include <petscviewertypes.h>
    1665: #include <petscoptions.h>

    1667: PETSC_EXTERN PetscErrorCode PetscObjectsListGetGlobalNumbering(MPI_Comm,PetscInt,PetscObject*,PetscInt*,PetscInt*);

    1669: PETSC_EXTERN PetscErrorCode PetscMemoryShowUsage(PetscViewer,const char[]);
    1670: PETSC_EXTERN PetscErrorCode PetscMemoryView(PetscViewer,const char[]);
    1671: PETSC_EXTERN PetscErrorCode PetscObjectPrintClassNamePrefixType(PetscObject,PetscViewer);
    1672: PETSC_EXTERN PetscErrorCode PetscObjectView(PetscObject,PetscViewer);
    1673: #define PetscObjectQueryFunction(obj,name,fptr) PetscObjectQueryFunction_Private((obj),(name),(PetscVoidFunction*)(fptr))
    1674: PETSC_EXTERN PetscErrorCode PetscObjectQueryFunction_Private(PetscObject,const char[],void (**)(void));
    1675: PETSC_EXTERN PetscErrorCode PetscObjectSetOptionsPrefix(PetscObject,const char[]);
    1676: PETSC_EXTERN PetscErrorCode PetscObjectAppendOptionsPrefix(PetscObject,const char[]);
    1677: PETSC_EXTERN PetscErrorCode PetscObjectPrependOptionsPrefix(PetscObject,const char[]);
    1678: PETSC_EXTERN PetscErrorCode PetscObjectGetOptionsPrefix(PetscObject,const char*[]);
    1679: PETSC_EXTERN PetscErrorCode PetscObjectChangeTypeName(PetscObject,const char[]);
    1680: PETSC_EXTERN PetscErrorCode PetscObjectRegisterDestroy(PetscObject);
    1681: PETSC_EXTERN PetscErrorCode PetscObjectRegisterDestroyAll(void);
    1682: PETSC_EXTERN PetscErrorCode PetscObjectViewFromOptions(PetscObject,PetscObject,const char[]);
    1683: PETSC_EXTERN PetscErrorCode PetscObjectName(PetscObject);
    1684: PETSC_EXTERN PetscErrorCode PetscObjectTypeCompare(PetscObject,const char[],PetscBool *);
    1685: PETSC_EXTERN PetscErrorCode PetscObjectTypeCompareAny(PetscObject,PetscBool*,const char[],...);
    1686: PETSC_EXTERN PetscErrorCode PetscRegisterFinalize(PetscErrorCode (*)(void));
    1687: PETSC_EXTERN PetscErrorCode PetscRegisterFinalizeAll(void);

    1689: #if defined(PETSC_HAVE_SAWS)
    1690: PETSC_EXTERN PetscErrorCode PetscSAWsBlock(void);
    1691: PETSC_EXTERN PetscErrorCode PetscObjectSAWsViewOff(PetscObject);
    1692: PETSC_EXTERN PetscErrorCode PetscObjectSAWsSetBlock(PetscObject,PetscBool);
    1693: PETSC_EXTERN PetscErrorCode PetscObjectSAWsBlock(PetscObject);
    1694: PETSC_EXTERN PetscErrorCode PetscObjectSAWsGrantAccess(PetscObject);
    1695: PETSC_EXTERN PetscErrorCode PetscObjectSAWsTakeAccess(PetscObject);
    1696: PETSC_EXTERN void           PetscStackSAWsGrantAccess(void);
    1697: PETSC_EXTERN void           PetscStackSAWsTakeAccess(void);
    1698: PETSC_EXTERN PetscErrorCode PetscStackViewSAWs(void);
    1699: PETSC_EXTERN PetscErrorCode PetscStackSAWsViewOff(void);

    1701: #else
    1702: #define PetscSAWsBlock()                        0
    1703: #define PetscObjectSAWsViewOff(obj)             0
    1704: #define PetscObjectSAWsSetBlock(obj,flg)        0
    1705: #define PetscObjectSAWsBlock(obj)               0
    1706: #define PetscObjectSAWsGrantAccess(obj)         0
    1707: #define PetscObjectSAWsTakeAccess(obj)          0
    1708: #define PetscStackViewSAWs()                    0
    1709: #define PetscStackSAWsViewOff()                 0
    1710: #define PetscStackSAWsTakeAccess()
    1711: #define PetscStackSAWsGrantAccess()

    1713: #endif

    1715: typedef void* PetscDLHandle;
    1716: typedef enum {PETSC_DL_DECIDE=0,PETSC_DL_NOW=1,PETSC_DL_LOCAL=2} PetscDLMode;
    1717: PETSC_EXTERN PetscErrorCode PetscDLOpen(const char[],PetscDLMode,PetscDLHandle *);
    1718: PETSC_EXTERN PetscErrorCode PetscDLClose(PetscDLHandle *);
    1719: PETSC_EXTERN PetscErrorCode PetscDLSym(PetscDLHandle,const char[],void **);

    1721: #if defined(PETSC_USE_DEBUG)
    1722: PETSC_EXTERN PetscErrorCode PetscMallocGetStack(void*,PetscStack**);
    1723: #endif
    1724: PETSC_EXTERN PetscErrorCode PetscObjectsDump(FILE*,PetscBool);

    1726: /*S
    1727:      PetscObjectList - Linked list of PETSc objects, each accessable by string name

    1729:    Level: developer

    1731:    Notes: Used by PetscObjectCompose() and PetscObjectQuery()

    1733: .seealso:  PetscObjectListAdd(), PetscObjectListDestroy(), PetscObjectListFind(), PetscObjectCompose(), PetscObjectQuery(), PetscFunctionList
    1734: S*/
    1735: typedef struct _n_PetscObjectList *PetscObjectList;

    1737: PETSC_EXTERN PetscErrorCode PetscObjectListDestroy(PetscObjectList*);
    1738: PETSC_EXTERN PetscErrorCode PetscObjectListFind(PetscObjectList,const char[],PetscObject*);
    1739: PETSC_EXTERN PetscErrorCode PetscObjectListReverseFind(PetscObjectList,PetscObject,char**,PetscBool*);
    1740: PETSC_EXTERN PetscErrorCode PetscObjectListAdd(PetscObjectList *,const char[],PetscObject);
    1741: PETSC_EXTERN PetscErrorCode PetscObjectListRemoveReference(PetscObjectList *,const char[]);
    1742: PETSC_EXTERN PetscErrorCode PetscObjectListDuplicate(PetscObjectList,PetscObjectList *);

    1744: /*
    1745:     Dynamic library lists. Lists of names of routines in objects or in dynamic
    1746:   link libraries that will be loaded as needed.
    1747: */

    1749: #define PetscFunctionListAdd(list,name,fptr) PetscFunctionListAdd_Private((list),(name),(PetscVoidFunction)(fptr))
    1750: PETSC_EXTERN PetscErrorCode PetscFunctionListAdd_Private(PetscFunctionList*,const char[],void (*)(void));
    1751: PETSC_EXTERN PetscErrorCode PetscFunctionListDestroy(PetscFunctionList*);
    1752: #define PetscFunctionListFind(list,name,fptr) PetscFunctionListFind_Private((list),(name),(PetscVoidFunction*)(fptr))
    1753: PETSC_EXTERN PetscErrorCode PetscFunctionListFind_Private(PetscFunctionList,const char[],void (**)(void));
    1754: PETSC_EXTERN PetscErrorCode PetscFunctionListPrintTypes(MPI_Comm,FILE*,const char[],const char[],const char[],const char[],PetscFunctionList,const char[]);
    1755: PETSC_EXTERN PetscErrorCode PetscFunctionListDuplicate(PetscFunctionList,PetscFunctionList *);
    1756: PETSC_EXTERN PetscErrorCode PetscFunctionListView(PetscFunctionList,PetscViewer);
    1757: PETSC_EXTERN PetscErrorCode PetscFunctionListGet(PetscFunctionList,const char ***,int*);

    1759: /*S
    1760:      PetscDLLibrary - Linked list of dynamics libraries to search for functions

    1762:    Level: advanced

    1764: .seealso:  PetscDLLibraryOpen()
    1765: S*/
    1766: typedef struct _n_PetscDLLibrary *PetscDLLibrary;
    1767: PETSC_EXTERN PetscDLLibrary  PetscDLLibrariesLoaded;
    1768: PETSC_EXTERN PetscErrorCode PetscDLLibraryAppend(MPI_Comm,PetscDLLibrary *,const char[]);
    1769: PETSC_EXTERN PetscErrorCode PetscDLLibraryPrepend(MPI_Comm,PetscDLLibrary *,const char[]);
    1770: PETSC_EXTERN PetscErrorCode PetscDLLibrarySym(MPI_Comm,PetscDLLibrary *,const char[],const char[],void **);
    1771: PETSC_EXTERN PetscErrorCode PetscDLLibraryPrintPath(PetscDLLibrary);
    1772: PETSC_EXTERN PetscErrorCode PetscDLLibraryRetrieve(MPI_Comm,const char[],char *,size_t,PetscBool  *);
    1773: PETSC_EXTERN PetscErrorCode PetscDLLibraryOpen(MPI_Comm,const char[],PetscDLLibrary *);
    1774: PETSC_EXTERN PetscErrorCode PetscDLLibraryClose(PetscDLLibrary);

    1776: /*
    1777:      Useful utility routines
    1778: */
    1779: PETSC_EXTERN PetscErrorCode PetscSplitOwnership(MPI_Comm,PetscInt*,PetscInt*);
    1780: PETSC_EXTERN PetscErrorCode PetscSplitOwnershipBlock(MPI_Comm,PetscInt,PetscInt*,PetscInt*);
    1781: PETSC_EXTERN PetscErrorCode PetscSequentialPhaseBegin(MPI_Comm,PetscMPIInt);
    1782: PETSC_EXTERN PetscErrorCode PetscSequentialPhaseEnd(MPI_Comm,PetscMPIInt);
    1783: PETSC_EXTERN PetscErrorCode PetscBarrier(PetscObject);
    1784: PETSC_EXTERN PetscErrorCode PetscMPIDump(FILE*);

    1786: /*
    1787:     PetscNot - negates a logical type value and returns result as a PetscBool

    1789:     Notes: This is useful in cases like
    1790: $     int        *a;
    1791: $     PetscBool  flag = PetscNot(a)
    1792:      where !a would not return a PetscBool because we cannot provide a cast from int to PetscBool in C.
    1793: */
    1794: #define PetscNot(a) ((a) ? PETSC_FALSE : PETSC_TRUE)

    1796: /*MC
    1797:     PetscHelpPrintf - Prints help messages.

    1799:    Synopsis:
    1800:     #include <petscsys.h>
    1801:      PetscErrorCode (*PetscHelpPrintf)(const char format[],...);

    1803:     Not Collective

    1805:     Input Parameters:
    1806: .   format - the usual printf() format string

    1808:    Level: developer

    1810:     Fortran Note:
    1811:     This routine is not supported in Fortran.

    1813:     Concepts: help messages^printing
    1814:     Concepts: printing^help messages

    1816: .seealso: PetscFPrintf(), PetscSynchronizedPrintf(), PetscErrorPrintf()
    1817: M*/
    1818: PETSC_EXTERN PetscErrorCode (*PetscHelpPrintf)(MPI_Comm,const char[],...);

    1820: /*
    1821:      Defines PETSc profiling.
    1822: */
    1823: #include <petsclog.h>

    1825: /*
    1826:       Simple PETSc parallel IO for ASCII printing
    1827: */
    1828: PETSC_EXTERN PetscErrorCode PetscFixFilename(const char[],char[]);
    1829: PETSC_EXTERN PetscErrorCode PetscFOpen(MPI_Comm,const char[],const char[],FILE**);
    1830: PETSC_EXTERN PetscErrorCode PetscFClose(MPI_Comm,FILE*);
    1831: PETSC_EXTERN PetscErrorCode PetscFPrintf(MPI_Comm,FILE*,const char[],...);
    1832: PETSC_EXTERN PetscErrorCode PetscPrintf(MPI_Comm,const char[],...);
    1833: PETSC_EXTERN PetscErrorCode PetscSNPrintf(char*,size_t,const char [],...);
    1834: PETSC_EXTERN PetscErrorCode PetscSNPrintfCount(char*,size_t,const char [],size_t*,...);

    1836: /* These are used internally by PETSc ASCII IO routines*/
    1837: #include <stdarg.h>
    1838: PETSC_EXTERN PetscErrorCode PetscVSNPrintf(char*,size_t,const char[],size_t*,va_list);
    1839: PETSC_EXTERN PetscErrorCode (*PetscVFPrintf)(FILE*,const char[],va_list);
    1840: PETSC_EXTERN PetscErrorCode PetscVFPrintfDefault(FILE*,const char[],va_list);

    1842: #if defined(PETSC_HAVE_MATLAB_ENGINE)
    1843: PETSC_EXTERN PetscErrorCode PetscVFPrintf_Matlab(FILE*,const char[],va_list);
    1844: #endif

    1846: #if defined(PETSC_HAVE_CLOSURES)
    1847: PETSC_EXTERN PetscErrorCode PetscVFPrintfSetClosure(int (^)(const char*));
    1848: #endif

    1850: PETSC_EXTERN PetscErrorCode PetscErrorPrintfDefault(const char [],...);
    1851: PETSC_EXTERN PetscErrorCode PetscErrorPrintfNone(const char [],...);
    1852: PETSC_EXTERN PetscErrorCode PetscHelpPrintfDefault(MPI_Comm,const char [],...);

    1854: #if defined(PETSC_HAVE_POPEN)
    1855: PETSC_EXTERN PetscErrorCode PetscPOpen(MPI_Comm,const char[],const char[],const char[],FILE **);
    1856: PETSC_EXTERN PetscErrorCode PetscPClose(MPI_Comm,FILE*,int*);
    1857: PETSC_EXTERN PetscErrorCode PetscPOpenSetMachine(const char[]);
    1858: #endif

    1860: PETSC_EXTERN PetscErrorCode PetscSynchronizedPrintf(MPI_Comm,const char[],...);
    1861: PETSC_EXTERN PetscErrorCode PetscSynchronizedFPrintf(MPI_Comm,FILE*,const char[],...);
    1862: PETSC_EXTERN PetscErrorCode PetscSynchronizedFlush(MPI_Comm,FILE*);
    1863: PETSC_EXTERN PetscErrorCode PetscSynchronizedFGets(MPI_Comm,FILE*,size_t,char[]);
    1864: PETSC_EXTERN PetscErrorCode PetscStartMatlab(MPI_Comm,const char[],const char[],FILE**);
    1865: PETSC_EXTERN PetscErrorCode PetscStartJava(MPI_Comm,const char[],const char[],FILE**);
    1866: PETSC_EXTERN PetscErrorCode PetscGetPetscDir(const char*[]);

    1868: PETSC_EXTERN PetscErrorCode PetscPopUpSelect(MPI_Comm,const char*,const char*,int,const char**,int*);

    1870: /*S
    1871:      PetscContainer - Simple PETSc object that contains a pointer to any required data

    1873:    Level: advanced

    1875: .seealso:  PetscObject, PetscContainerCreate()
    1876: S*/
    1877: PETSC_EXTERN PetscClassId PETSC_CONTAINER_CLASSID;
    1878: typedef struct _p_PetscContainer*  PetscContainer;
    1879: PETSC_EXTERN PetscErrorCode PetscContainerGetPointer(PetscContainer,void **);
    1880: PETSC_EXTERN PetscErrorCode PetscContainerSetPointer(PetscContainer,void *);
    1881: PETSC_EXTERN PetscErrorCode PetscContainerDestroy(PetscContainer*);
    1882: PETSC_EXTERN PetscErrorCode PetscContainerCreate(MPI_Comm,PetscContainer *);
    1883: PETSC_EXTERN PetscErrorCode PetscContainerSetUserDestroy(PetscContainer, PetscErrorCode (*)(void*));

    1885: /*
    1886:    For use in debuggers
    1887: */
    1888: PETSC_EXTERN PetscMPIInt PetscGlobalRank;
    1889: PETSC_EXTERN PetscMPIInt PetscGlobalSize;
    1890: PETSC_EXTERN PetscErrorCode PetscIntView(PetscInt,const PetscInt[],PetscViewer);
    1891: PETSC_EXTERN PetscErrorCode PetscRealView(PetscInt,const PetscReal[],PetscViewer);
    1892: PETSC_EXTERN PetscErrorCode PetscScalarView(PetscInt,const PetscScalar[],PetscViewer);

    1894: #include <stddef.h>
    1895: #include <string.h>             /* for memcpy, memset */
    1896: #if defined(PETSC_HAVE_STDLIB_H)
    1897: #include <stdlib.h>
    1898: #endif

    1900: #if defined(PETSC_HAVE_XMMINTRIN_H) && !defined(__CUDACC__)
    1901: #include <xmmintrin.h>
    1902: #endif

    1906: /*@C
    1907:    PetscMemcpy - Copies n bytes, beginning at location b, to the space
    1908:    beginning at location a. The two memory regions CANNOT overlap, use
    1909:    PetscMemmove() in that case.

    1911:    Not Collective

    1913:    Input Parameters:
    1914: +  b - pointer to initial memory space
    1915: -  n - length (in bytes) of space to copy

    1917:    Output Parameter:
    1918: .  a - pointer to copy space

    1920:    Level: intermediate

    1922:    Compile Option:
    1923:     PETSC_PREFER_DCOPY_FOR_MEMCPY will cause the BLAS dcopy() routine to be used
    1924:                                   for memory copies on double precision values.
    1925:     PETSC_PREFER_COPY_FOR_MEMCPY will cause C code to be used
    1926:                                   for memory copies on double precision values.
    1927:     PETSC_PREFER_FORTRAN_FORMEMCPY will cause Fortran code to be used
    1928:                                   for memory copies on double precision values.

    1930:    Note:
    1931:    This routine is analogous to memcpy().

    1933:    Developer Note: this is inlined for fastest performance

    1935:   Concepts: memory^copying
    1936:   Concepts: copying^memory

    1938: .seealso: PetscMemmove()

    1940: @*/
    1941: PETSC_STATIC_INLINE PetscErrorCode PetscMemcpy(void *a,const void *b,size_t n)
    1942: {
    1943: #if defined(PETSC_USE_DEBUG)
    1944:   size_t al = (size_t) a,bl = (size_t) b;
    1945:   size_t nl = (size_t) n;
    1947:   if (n > 0 && !b) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ARG_NULL,"Trying to copy from a null pointer");
    1948:   if (n > 0 && !a) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ARG_NULL,"Trying to copy to a null pointer");
    1949: #else
    1951: #endif
    1952:   if (a != b && n > 0) {
    1953: #if defined(PETSC_USE_DEBUG)
    1954:     if ((al > bl && (al - bl) < nl) || (bl - al) < nl)  SETERRQ3(PETSC_COMM_SELF,PETSC_ERR_ARG_INCOMP,"Memory regions overlap: either use PetscMemmov()\n\
    1955:               or make sure your copy regions and lengths are correct. \n\
    1956:               Length (bytes) %ld first address %ld second address %ld",nl,al,bl);
    1957: #endif
    1958: #if (defined(PETSC_PREFER_DCOPY_FOR_MEMCPY) || defined(PETSC_PREFER_COPY_FOR_MEMCPY) || defined(PETSC_PREFER_FORTRAN_FORMEMCPY))
    1959:    if (!(a % sizeof(PetscScalar)) && !(n % sizeof(PetscScalar))) {
    1960:       size_t len = n/sizeof(PetscScalar);
    1961: #if defined(PETSC_PREFER_DCOPY_FOR_MEMCPY)
    1962:       PetscBLASInt   one = 1,blen;
    1964:       PetscBLASIntCast(len,&blen);
    1965:       PetscStackCallBLAS("BLAScopy",BLAScopy_(&blen,(PetscScalar *)b,&one,(PetscScalar *)a,&one));
    1966: #elif defined(PETSC_PREFER_FORTRAN_FORMEMCPY)
    1967:       fortrancopy_(&len,(PetscScalar*)b,(PetscScalar*)a);
    1968: #else
    1969:       size_t      i;
    1970:       PetscScalar *x = (PetscScalar*)b, *y = (PetscScalar*)a;
    1971:       for (i=0; i<len; i++) y[i] = x[i];
    1972: #endif
    1973:     } else {
    1974:       memcpy((char*)(a),(char*)(b),n);
    1975:     }
    1976: #else
    1977:     memcpy((char*)(a),(char*)(b),n);
    1978: #endif
    1979:   }
    1980:   return(0);
    1981: }

    1983: /*@C
    1984:    PetscMemzero - Zeros the specified memory.

    1986:    Not Collective

    1988:    Input Parameters:
    1989: +  a - pointer to beginning memory location
    1990: -  n - length (in bytes) of memory to initialize

    1992:    Level: intermediate

    1994:    Compile Option:
    1995:    PETSC_PREFER_BZERO - on certain machines (the IBM RS6000) the bzero() routine happens
    1996:   to be faster than the memset() routine. This flag causes the bzero() routine to be used.

    1998:    Developer Note: this is inlined for fastest performance

    2000:    Concepts: memory^zeroing
    2001:    Concepts: zeroing^memory

    2003: .seealso: PetscMemcpy()
    2004: @*/
    2005: PETSC_STATIC_INLINE PetscErrorCode  PetscMemzero(void *a,size_t n)
    2006: {
    2007:   if (n > 0) {
    2008: #if defined(PETSC_USE_DEBUG)
    2009:     if (!a) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ARG_NULL,"Trying to zero at a null pointer");
    2010: #endif
    2011: #if defined(PETSC_PREFER_ZERO_FOR_MEMZERO)
    2012:     if (!(((long) a) % sizeof(PetscScalar)) && !(n % sizeof(PetscScalar))) {
    2013:       size_t      i,len = n/sizeof(PetscScalar);
    2014:       PetscScalar *x = (PetscScalar*)a;
    2015:       for (i=0; i<len; i++) x[i] = 0.0;
    2016:     } else {
    2017: #elif defined(PETSC_PREFER_FORTRAN_FOR_MEMZERO)
    2018:     if (!(((long) a) % sizeof(PetscScalar)) && !(n % sizeof(PetscScalar))) {
    2019:       PetscInt len = n/sizeof(PetscScalar);
    2020:       fortranzero_(&len,(PetscScalar*)a);
    2021:     } else {
    2022: #endif
    2023: #if defined(PETSC_PREFER_BZERO)
    2024:       bzero((char *)a,n);
    2025: #else
    2026:       memset((char*)a,0,n);
    2027: #endif
    2028: #if defined(PETSC_PREFER_ZERO_FOR_MEMZERO) || defined(PETSC_PREFER_FORTRAN_FOR_MEMZERO)
    2029:     }
    2030: #endif
    2031:   }
    2032:   return 0;
    2033: }

    2035: /*MC
    2036:    PetscPrefetchBlock - Prefetches a block of memory

    2038:    Synopsis:
    2039:     #include <petscsys.h>
    2040:     void PetscPrefetchBlock(const anytype *a,size_t n,int rw,int t)

    2042:    Not Collective

    2044:    Input Parameters:
    2045: +  a - pointer to first element to fetch (any type but usually PetscInt or PetscScalar)
    2046: .  n - number of elements to fetch
    2047: .  rw - 1 if the memory will be written to, otherwise 0 (ignored by many processors)
    2048: -  t - temporal locality (PETSC_PREFETCH_HINT_{NTA,T0,T1,T2}), see note

    2050:    Level: developer

    2052:    Notes:
    2053:    The last two arguments (rw and t) must be compile-time constants.

    2055:    Adopting Intel's x86/x86-64 conventions, there are four levels of temporal locality.  Not all architectures offer
    2056:    equivalent locality hints, but the following macros are always defined to their closest analogue.
    2057: +  PETSC_PREFETCH_HINT_NTA - Non-temporal.  Prefetches directly to L1, evicts to memory (skips higher level cache unless it was already there when prefetched).
    2058: .  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.
    2059: .  PETSC_PREFETCH_HINT_T1 - Fetch to level 2 and higher (not L1).
    2060: -  PETSC_PREFETCH_HINT_T2 - Fetch to high-level cache only.  (On many systems, T0 and T1 are equivalent.)

    2062:    This function does nothing on architectures that do not support prefetch and never errors (even if passed an invalid
    2063:    address).

    2065:    Concepts: memory
    2066: M*/
    2067: #define PetscPrefetchBlock(a,n,rw,t) do {                               \
    2068:     const char *_p = (const char*)(a),*_end = (const char*)((a)+(n));   \
    2069:     for ( ; _p < _end; _p += PETSC_LEVEL1_DCACHE_LINESIZE) PETSC_Prefetch(_p,(rw),(t)); \
    2070:   } while (0)

    2072: /*
    2073:       Determine if some of the kernel computation routines use
    2074:    Fortran (rather than C) for the numerical calculations. On some machines
    2075:    and compilers (like complex numbers) the Fortran version of the routines
    2076:    is faster than the C/C++ versions. The flag --with-fortran-kernels
    2077:    should be used with ./configure to turn these on.
    2078: */
    2079: #if defined(PETSC_USE_FORTRAN_KERNELS)

    2081: #if !defined(PETSC_USE_FORTRAN_KERNEL_MULTCRL)
    2082: #define PETSC_USE_FORTRAN_KERNEL_MULTCRL
    2083: #endif

    2085: #if !defined(PETSC_USE_FORTRAN_KERNEL_MULTAIJPERM)
    2086: #define PETSC_USE_FORTRAN_KERNEL_MULTAIJPERM
    2087: #endif

    2089: #if !defined(PETSC_USE_FORTRAN_KERNEL_MULTAIJ)
    2090: #define PETSC_USE_FORTRAN_KERNEL_MULTAIJ
    2091: #endif

    2093: #if !defined(PETSC_USE_FORTRAN_KERNEL_MULTTRANSPOSEAIJ)
    2094: #define PETSC_USE_FORTRAN_KERNEL_MULTTRANSPOSEAIJ
    2095: #endif

    2097: #if !defined(PETSC_USE_FORTRAN_KERNEL_NORM)
    2098: #define PETSC_USE_FORTRAN_KERNEL_NORM
    2099: #endif

    2101: #if !defined(PETSC_USE_FORTRAN_KERNEL_MAXPY)
    2102: #define PETSC_USE_FORTRAN_KERNEL_MAXPY
    2103: #endif

    2105: #if !defined(PETSC_USE_FORTRAN_KERNEL_SOLVEAIJ)
    2106: #define PETSC_USE_FORTRAN_KERNEL_SOLVEAIJ
    2107: #endif

    2109: #if !defined(PETSC_USE_FORTRAN_KERNEL_RELAXAIJ)
    2110: #define PETSC_USE_FORTRAN_KERNEL_RELAXAIJ
    2111: #endif

    2113: #if !defined(PETSC_USE_FORTRAN_KERNEL_SOLVEBAIJ)
    2114: #define PETSC_USE_FORTRAN_KERNEL_SOLVEBAIJ
    2115: #endif

    2117: #if !defined(PETSC_USE_FORTRAN_KERNEL_MULTADDAIJ)
    2118: #define PETSC_USE_FORTRAN_KERNEL_MULTADDAIJ
    2119: #endif

    2121: #if !defined(PETSC_USE_FORTRAN_KERNEL_MDOT)
    2122: #define PETSC_USE_FORTRAN_KERNEL_MDOT
    2123: #endif

    2125: #if !defined(PETSC_USE_FORTRAN_KERNEL_XTIMESY)
    2126: #define PETSC_USE_FORTRAN_KERNEL_XTIMESY
    2127: #endif

    2129: #if !defined(PETSC_USE_FORTRAN_KERNEL_AYPX)
    2130: #define PETSC_USE_FORTRAN_KERNEL_AYPX
    2131: #endif

    2133: #if !defined(PETSC_USE_FORTRAN_KERNEL_WAXPY)
    2134: #define PETSC_USE_FORTRAN_KERNEL_WAXPY
    2135: #endif

    2137: #endif

    2139: /*
    2140:     Macros for indicating code that should be compiled with a C interface,
    2141:    rather than a C++ interface. Any routines that are dynamically loaded
    2142:    (such as the PCCreate_XXX() routines) must be wrapped so that the name
    2143:    mangler does not change the functions symbol name. This just hides the
    2144:    ugly extern "C" {} wrappers.
    2145: */
    2146: #if defined(__cplusplus)
    2147: #define EXTERN_C_BEGIN extern "C" {
    2148: #define EXTERN_C_END }
    2149: #else
    2150: #define EXTERN_C_BEGIN
    2151: #define EXTERN_C_END
    2152: #endif

    2154: /* --------------------------------------------------------------------*/

    2156: /*MC
    2157:     MPI_Comm - the basic object used by MPI to determine which processes are involved in a
    2158:         communication

    2160:    Level: beginner

    2162:    Note: This manual page is a place-holder because MPICH does not have a manual page for MPI_Comm

    2164: .seealso: PETSC_COMM_WORLD, PETSC_COMM_SELF
    2165: M*/

    2167: /*MC
    2168:     PetscScalar - PETSc type that represents either a double precision real number, a double precision
    2169:        complex number, a single precision real number, a long double or an int - if the code is configured
    2170:        with --with-scalar-type=real,complex --with-precision=single,double,__float128

    2172:    Level: beginner

    2174: .seealso: PetscReal, MPIU_SCALAR, PetscInt, MPIU_REAL
    2175: M*/

    2177: /*MC
    2178:     PetscComplex - PETSc type that represents a complex number with precision matching that of PetscReal.

    2180:    Synopsis:
    2181:    #include <petscsys.h>
    2182:    PetscComplex number = 1. + 2.*PETSC_i;

    2184:    Level: beginner

    2186:    Note:
    2187:    Complex numbers are automatically available if PETSc was able to find a working complex implementation

    2189: .seealso: PetscReal, PetscComplex, MPIU_COMPLEX, PetscInt, PETSC_i
    2190: M*/

    2192: /*MC
    2193:     PetscReal - PETSc type that represents a real number version of PetscScalar

    2195:    Level: beginner

    2197: .seealso: PetscScalar
    2198: M*/

    2200: /*MC
    2201:     MPIU_SCALAR - MPI datatype corresponding to PetscScalar

    2203:    Level: beginner

    2205:     Note: In MPI calls that require an MPI datatype that matches a PetscScalar or array of PetscScalars
    2206:           pass this value

    2208: .seealso: PetscReal, PetscScalar, MPIU_INT
    2209: M*/

    2211: #if defined(PETSC_HAVE_MPIIO)
    2212: #if !defined(PETSC_WORDS_BIGENDIAN)
    2213: PETSC_EXTERN PetscErrorCode MPIU_File_write_all(MPI_File,void*,PetscMPIInt,MPI_Datatype,MPI_Status*);
    2214: PETSC_EXTERN PetscErrorCode MPIU_File_read_all(MPI_File,void*,PetscMPIInt,MPI_Datatype,MPI_Status*);
    2215: #else
    2216: #define MPIU_File_write_all(a,b,c,d,e) MPI_File_write_all(a,b,c,d,e)
    2217: #define MPIU_File_read_all(a,b,c,d,e) MPI_File_read_all(a,b,c,d,e)
    2218: #endif
    2219: #endif

    2221: /* the following petsc_static_inline require petscerror.h */

    2223: /* Limit MPI to 32-bits */
    2224: #define PETSC_MPI_INT_MAX  2147483647
    2225: #define PETSC_MPI_INT_MIN -2147483647
    2226: /* Limit BLAS to 32-bits */
    2227: #define PETSC_BLAS_INT_MAX  2147483647
    2228: #define PETSC_BLAS_INT_MIN -2147483647

    2232: /*@C
    2233:     PetscBLASIntCast - casts a PetscInt (which may be 64 bits in size) to a PetscBLASInt (which may be 32 bits in size), generates an
    2234:          error if the PetscBLASInt is not large enough to hold the number.

    2236:    Not Collective

    2238:    Input Parameter:
    2239: .     a - the PetscInt value

    2241:    Output Parameter:
    2242: .     b - the resulting PetscBLASInt value

    2244:    Level: advanced

    2246: .seealso: PetscBLASInt, PetscMPIInt, PetscInt, PetscMPIIntCast()
    2247: @*/
    2248: PETSC_STATIC_INLINE PetscErrorCode PetscBLASIntCast(PetscInt a,PetscBLASInt *b)
    2249: {
    2251:   *b =  (PetscBLASInt)(a);
    2252: #if defined(PETSC_USE_64BIT_INDICES) && !defined(PETSC_HAVE_64BIT_BLAS_INDICES)
    2253:   if ((a) > PETSC_BLAS_INT_MAX) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ARG_OUTOFRANGE,"Array too long for BLAS/LAPACK");
    2254: #endif
    2255:   return(0);
    2256: }

    2260: /*@C
    2261:     PetscMPIIntCast - casts a PetscInt (which may be 64 bits in size) to a PetscMPIInt (which may be 32 bits in size), generates an
    2262:          error if the PetscMPIInt is not large enough to hold the number.

    2264:    Not Collective

    2266:    Input Parameter:
    2267: .     a - the PetscInt value

    2269:    Output Parameter:
    2270: .     b - the resulting PetscMPIInt value

    2272:    Level: advanced

    2274: .seealso: PetscBLASInt, PetscMPIInt, PetscInt, PetscBLASIntCast()
    2275: @*/
    2276: PETSC_STATIC_INLINE PetscErrorCode PetscMPIIntCast(PetscInt a,PetscMPIInt *b)
    2277: {
    2279:   *b =  (PetscMPIInt)(a);
    2280: #if defined(PETSC_USE_64BIT_INDICES)
    2281:   if ((a) > PETSC_MPI_INT_MAX) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ARG_OUTOFRANGE,"Array too long for MPI");
    2282: #endif
    2283:   return(0);
    2284: }

    2286: #define PetscIntMult64bit(a,b)   ((Petsc64bitInt)(a))*((Petsc64bitInt)(b))

    2290: /*@C

    2292:    PetscRealIntMultTruncate - Computes the product of a positive PetscReal and a positive PetscInt and truncates the value to slightly less than the maximal possible value

    2294:    Not Collective

    2296:    Input Parameter:
    2297: +     a - the PetscReal value
    2298: -     b - the second value

    2300:    Output Parameter:
    2301: .     c - the result as a PetscInt value

    2303:    Use PetscIntMult64bit() to compute the product of two PetscInt as a Petsc64bitInt
    2304:    Use PetscIntMultTruncate() to compute the product of two positive PetscInt and truncate to fit a PetscInt
    2305:    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

    2307:    Developers Note: We currently assume that PetscInt addition can never overflow, this is obviously wrong but requires many more checks.

    2309:    This is used where we compute approximate sizes for workspace and need to insure the workspace is index-able.

    2311:    Level: advanced

    2313: .seealso: PetscBLASInt, PetscMPIInt, PetscInt, PetscBLASIntCast(), PetscIntMult64()
    2314: @*/
    2315: PETSC_STATIC_INLINE PetscInt PetscRealIntMultTruncate(PetscReal a,PetscInt b)
    2316: {
    2317:   Petsc64bitInt r;

    2319:   r  =  (Petsc64bitInt) (a*(PetscReal)b);
    2320:   if (r > PETSC_MAX_INT - 100) r = PETSC_MAX_INT - 100;
    2321:   return (PetscInt) r;
    2322: }

    2326: /*@C

    2328:    PetscIntMultTruncate - Computes the product of two positive PetscInt and truncates the value to slightly less than the maximal possible value

    2330:    Not Collective

    2332:    Input Parameter:
    2333: +     a - the PetscInt value
    2334: -     b - the second value

    2336:    Output Parameter:
    2337: .     c - the result as a PetscInt value

    2339:    Use PetscIntMult64bit() to compute the product of two PetscInt as a Petsc64bitInt
    2340:    Use PetscRealIntMultTruncate() to compute the product of a PetscReal and a PetscInt and truncate to fit a PetscInt
    2341:    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

    2343:    Developers Note: We currently assume that PetscInt addition can never overflow, this is obviously wrong but requires many more checks.

    2345:    This is used where we compute approximate sizes for workspace and need to insure the workspace is index-able.

    2347:    Level: advanced

    2349: .seealso: PetscBLASInt, PetscMPIInt, PetscInt, PetscBLASIntCast(), PetscIntMult64()
    2350: @*/
    2351: PETSC_STATIC_INLINE PetscInt PetscIntMultTruncate(PetscInt a,PetscInt b)
    2352: {
    2353:   Petsc64bitInt r;

    2355:   r  =  PetscIntMult64bit(a,b);
    2356:   if (r > PETSC_MAX_INT - 100) r = PETSC_MAX_INT - 100;
    2357:   return (PetscInt) r;
    2358: }

    2362: /*@C

    2364:    PetscIntSumTruncate - Computes the sum of two positive PetscInt and truncates the value to slightly less than the maximal possible value

    2366:    Not Collective

    2368:    Input Parameter:
    2369: +     a - the PetscInt value
    2370: -     b - the second value

    2372:    Output Parameter:
    2373: .     c - the result as a PetscInt value

    2375:    Use PetscIntMult64bit() to compute the product of two PetscInt as a Petsc64bitInt
    2376:    Use PetscRealIntMultTruncate() to compute the product of a PetscReal and a PetscInt and truncate to fit a PetscInt
    2377:    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

    2379:    This is used where we compute approximate sizes for workspace and need to insure the workspace is index-able.

    2381:    Level: advanced

    2383: .seealso: PetscBLASInt, PetscMPIInt, PetscInt, PetscBLASIntCast(), PetscIntMult64()
    2384: @*/
    2385: PETSC_STATIC_INLINE PetscInt PetscIntSumTruncate(PetscInt a,PetscInt b)
    2386: {
    2387:   Petsc64bitInt r;

    2389:   r  =  ((Petsc64bitInt)a) + ((Petsc64bitInt)b);
    2390:   if (r > PETSC_MAX_INT - 100) r = PETSC_MAX_INT - 100;
    2391:   return (PetscInt) r;
    2392: }

    2396: /*@C

    2398:    PetscIntMultError - Computes the product of two positive PetscInt and generates an error with overflow.

    2400:    Not Collective

    2402:    Input Parameter:
    2403: +     a - the PetscInt value
    2404: -     b - the second value

    2406:    Output Parameter:ma
    2407: .     c - the result as a PetscInt value

    2409:    Use PetscIntMult64bit() to compute the product of two 32 bit PetscInt and store in a Petsc64bitInt
    2410:    Use PetscIntMultTruncate() to compute the product of two PetscInt and truncate it to fit in a PetscInt

    2412:    Developers Note: We currently assume that PetscInt addition can never overflow, this is obviously wrong but requires many more checks.

    2414:    Level: advanced

    2416: .seealso: PetscBLASInt, PetscMPIInt, PetscInt, PetscBLASIntCast(), PetscIntMult64()
    2417: @*/
    2418: PETSC_STATIC_INLINE PetscErrorCode PetscIntMultError(PetscInt a,PetscInt b,PetscInt *result)
    2419: {
    2420:   Petsc64bitInt r;

    2423:   r  =  PetscIntMult64bit(a,b);
    2424: #if !defined(PETSC_USE_64BIT_INDICES)
    2425:   if (r > PETSC_MAX_INT) SETERRQ2(PETSC_COMM_SELF,PETSC_ERR_SUP,"Product of two integer %d %d overflow, you must ./configure PETSc with --with-64-bit-indices for the case you are running",a,b);
    2426: #endif
    2427:   if (result) *result = (PetscInt) r;
    2428:   return(0);
    2429: }

    2433: /*@C

    2435:    PetscIntSumError - Computes the product of two positive PetscInt and generates an error with overflow.

    2437:    Not Collective

    2439:    Input Parameter:
    2440: +     a - the PetscInt value
    2441: -     b - the second value

    2443:    Output Parameter:ma
    2444: .     c - the result as a PetscInt value

    2446:    Use PetscIntMult64bit() to compute the product of two 32 bit PetscInt and store in a Petsc64bitInt
    2447:    Use PetscIntMultTruncate() to compute the product of two PetscInt and truncate it to fit in a PetscInt

    2449:    Level: advanced

    2451: .seealso: PetscBLASInt, PetscMPIInt, PetscInt, PetscBLASIntCast(), PetscIntMult64()
    2452: @*/
    2453: PETSC_STATIC_INLINE PetscErrorCode PetscIntSumError(PetscInt a,PetscInt b,PetscInt *result)
    2454: {
    2455:   Petsc64bitInt r;

    2458:   r  =  ((Petsc64bitInt)a) + ((Petsc64bitInt)b);
    2459: #if !defined(PETSC_USE_64BIT_INDICES)
    2460:   if (r > PETSC_MAX_INT) SETERRQ2(PETSC_COMM_SELF,PETSC_ERR_SUP,"Sum of two integer %d %d overflow, you must ./configure PETSc with --with-64-bit-indices for the case you are running",a,b);
    2461: #endif
    2462:   if (result) *result = (PetscInt) r;
    2463:   return(0);
    2464: }
    2465:
    2466: /*
    2467:      The IBM include files define hz, here we hide it so that it may be used as a regular user variable.
    2468: */
    2469: #if defined(hz)
    2470: #undef hz
    2471: #endif

    2473: /*  For arrays that contain filenames or paths */

    2476: #if defined(PETSC_HAVE_LIMITS_H)
    2477: #include <limits.h>
    2478: #endif
    2479: #if defined(PETSC_HAVE_SYS_PARAM_H)
    2480: #include <sys/param.h>
    2481: #endif
    2482: #if defined(PETSC_HAVE_SYS_TYPES_H)
    2483: #include <sys/types.h>
    2484: #endif
    2485: #if defined(MAXPATHLEN)
    2486: #  define PETSC_MAX_PATH_LEN     MAXPATHLEN
    2487: #elif defined(MAX_PATH)
    2488: #  define PETSC_MAX_PATH_LEN     MAX_PATH
    2489: #elif defined(_MAX_PATH)
    2490: #  define PETSC_MAX_PATH_LEN     _MAX_PATH
    2491: #else
    2492: #  define PETSC_MAX_PATH_LEN     4096
    2493: #endif

    2495: /*MC

    2497:     UsingFortran - Fortran can be used with PETSc in four distinct approaches

    2499: $    1) classic Fortran 77 style
    2500: $#include "petsc/finclude/petscXXX.h" to work with material from the XXX component of PETSc
    2501: $       XXX variablename
    2502: $      You cannot use this approach if you wish to use the Fortran 90 specific PETSc routines
    2503: $      which end in F90; such as VecGetArrayF90()
    2504: $
    2505: $    2) classic Fortran 90 style
    2506: $#include "petsc/finclude/petscXXX.h"
    2507: $#include "petsc/finclude/petscXXX.h90" to work with material from the XXX component of PETSc
    2508: $       XXX variablename
    2509: $
    2510: $    3) Using Fortran modules
    2511: $#include "petsc/finclude/petscXXXdef.h"
    2512: $         use petscXXXX
    2513: $       XXX variablename
    2514: $
    2515: $    4) Use Fortran modules and Fortran data types for PETSc types
    2516: $#include "petsc/finclude/petscXXXdef.h"
    2517: $         use petscXXXX
    2518: $       type(XXX) variablename
    2519: $      To use this approach you must ./configure PETSc with the additional
    2520: $      option --with-fortran-datatypes You cannot use the type(XXX) declaration approach without using Fortran modules

    2522:     Finally if you absolutely do not want to use any #include you can use either

    2524: $    3a) skip the #include BUT you cannot use any PETSc data type names like Vec, Mat, PetscInt, PetscErrorCode etc
    2525: $        and you must declare the variables as integer, for example
    2526: $        integer variablename
    2527: $
    2528: $    4a) skip the #include, you use the object types like type(Vec) type(Mat) but cannot use the data type
    2529: $        names like PetscErrorCode, PetscInt etc. again for those you must use integer

    2531:    We recommend either 2 or 3. Approaches 2 and 3 provide type checking for most PETSc function calls; 4 has type checking
    2532: for only a few PETSc functions.

    2534:    Fortran type checking with interfaces is strick, this means you cannot pass a scalar value when an array value
    2535: is expected (even though it is legal Fortran). For example when setting a single value in a matrix with MatSetValues()
    2536: you cannot have something like
    2537: $      PetscInt row,col
    2538: $      PetscScalar val
    2539: $        ...
    2540: $      call MatSetValues(mat,1,row,1,col,val,INSERT_VALUES,ierr)
    2541: You must instead have
    2542: $      PetscInt row(1),col(1)
    2543: $      PetscScalar val(1)
    2544: $        ...
    2545: $      call MatSetValues(mat,1,row,1,col,val,INSERT_VALUES,ierr)

    2548:     See the example src/vec/vec/examples/tutorials/ex20f90.F90 for an example that can use all four approaches

    2550:     Developer Notes: The petsc/finclude/petscXXXdef.h contain all the #defines (would be typedefs in C code) these
    2551:      automatically include their predecessors; for example petsc/finclude/petscvecdef.h includes petsc/finclude/petscisdef.h

    2553:      The petsc/finclude/petscXXXX.h contain all the parameter statements for that package. These automatically include
    2554:      their petsc/finclude/petscXXXdef.h file but DO NOT automatically include their predecessors;  for example
    2555:      petsc/finclude/petscvec.h does NOT automatically include petsc/finclude/petscis.h

    2557:      The petsc/finclude/ftn-custom/petscXXXdef.h90 are not intended to be used directly in code, they define the
    2558:      Fortran data type type(XXX) (for example type(Vec)) when PETSc is ./configure with the --with-fortran-datatypes option.

    2560:      The petsc/finclude/ftn-custom/petscXXX.h90 (not included directly by code) contain interface definitions for
    2561:      the PETSc Fortran stubs that have different bindings then their C version (for example VecGetArrayF90).

    2563:      The petsc/finclude/ftn-auto/petscXXX.h90 (not included directly by code) contain interface definitions generated
    2564:      automatically by "make allfortranstubs".

    2566:      The petsc/finclude/petscXXX.h90 includes the custom petsc/finclude/ftn-custom/petscXXX.h90 and if ./configure
    2567:      was run with --with-fortran-interfaces it also includes the petsc/finclude/ftn-auto/petscXXX.h90 These DO NOT automatically
    2568:      include their predecessors

    2570:     Level: beginner

    2572: M*/

    2574: PETSC_EXTERN PetscErrorCode PetscGetArchType(char[],size_t);
    2575: PETSC_EXTERN PetscErrorCode PetscGetHostName(char[],size_t);
    2576: PETSC_EXTERN PetscErrorCode PetscGetUserName(char[],size_t);
    2577: PETSC_EXTERN PetscErrorCode PetscGetProgramName(char[],size_t);
    2578: PETSC_EXTERN PetscErrorCode PetscSetProgramName(const char[]);
    2579: PETSC_EXTERN PetscErrorCode PetscGetDate(char[],size_t);
    2580: PETSC_EXTERN PetscErrorCode PetscGetVersion(char[], size_t);

    2582: PETSC_EXTERN PetscErrorCode PetscSortInt(PetscInt,PetscInt[]);
    2583: PETSC_EXTERN PetscErrorCode PetscSortRemoveDupsInt(PetscInt*,PetscInt[]);
    2584: PETSC_EXTERN PetscErrorCode PetscFindInt(PetscInt, PetscInt, const PetscInt[], PetscInt*);
    2585: PETSC_EXTERN PetscErrorCode PetscSortIntWithPermutation(PetscInt,const PetscInt[],PetscInt[]);
    2586: PETSC_EXTERN PetscErrorCode PetscSortStrWithPermutation(PetscInt,const char*[],PetscInt[]);
    2587: PETSC_EXTERN PetscErrorCode PetscSortIntWithArray(PetscInt,PetscInt[],PetscInt[]);
    2588: PETSC_EXTERN PetscErrorCode PetscSortIntWithArrayPair(PetscInt,PetscInt*,PetscInt*,PetscInt*);
    2589: PETSC_EXTERN PetscErrorCode PetscSortMPIInt(PetscInt,PetscMPIInt[]);
    2590: PETSC_EXTERN PetscErrorCode PetscSortRemoveDupsMPIInt(PetscInt*,PetscMPIInt[]);
    2591: PETSC_EXTERN PetscErrorCode PetscSortMPIIntWithArray(PetscMPIInt,PetscMPIInt[],PetscMPIInt[]);
    2592: PETSC_EXTERN PetscErrorCode PetscSortIntWithScalarArray(PetscInt,PetscInt[],PetscScalar[]);
    2593: PETSC_EXTERN PetscErrorCode PetscSortIntWithDataArray(PetscInt,PetscInt[],void*,size_t,void*);
    2594: PETSC_EXTERN PetscErrorCode PetscSortReal(PetscInt,PetscReal[]);
    2595: PETSC_EXTERN PetscErrorCode PetscSortRealWithPermutation(PetscInt,const PetscReal[],PetscInt[]);
    2596: PETSC_EXTERN PetscErrorCode PetscSortRemoveDupsReal(PetscInt*,PetscReal[]);
    2597: PETSC_EXTERN PetscErrorCode PetscSortSplit(PetscInt,PetscInt,PetscScalar[],PetscInt[]);
    2598: PETSC_EXTERN PetscErrorCode PetscSortSplitReal(PetscInt,PetscInt,PetscReal[],PetscInt[]);
    2599: PETSC_EXTERN PetscErrorCode PetscProcessTree(PetscInt,const PetscBool [],const PetscInt[],PetscInt*,PetscInt**,PetscInt**,PetscInt**,PetscInt**);
    2600: PETSC_EXTERN PetscErrorCode PetscMergeIntArrayPair(PetscInt,const PetscInt*,const PetscInt*,PetscInt,const PetscInt*,const PetscInt*,PetscInt*,PetscInt**,PetscInt**);
    2601: PETSC_EXTERN PetscErrorCode PetscMergeIntArray(PetscInt,const PetscInt*,PetscInt,const PetscInt*,PetscInt*,PetscInt**);
    2602: PETSC_EXTERN PetscErrorCode PetscMergeMPIIntArray(PetscInt,const PetscMPIInt[],PetscInt,const PetscMPIInt[],PetscInt*,PetscMPIInt**);

    2604: PETSC_EXTERN PetscErrorCode PetscSetDisplay(void);
    2605: PETSC_EXTERN PetscErrorCode PetscGetDisplay(char[],size_t);

    2607: /*J
    2608:     PetscRandomType - String with the name of a PETSc randomizer

    2610:    Level: beginner

    2612:    Notes: to use the SPRNG you must have ./configure PETSc
    2613:    with the option --download-sprng

    2615: .seealso: PetscRandomSetType(), PetscRandom, PetscRandomCreate()
    2616: J*/
    2617: typedef const char* PetscRandomType;
    2618: #define PETSCRAND       "rand"
    2619: #define PETSCRAND48     "rand48"
    2620: #define PETSCSPRNG      "sprng"
    2621: #define PETSCRANDER48   "rander48"

    2623: /* Logging support */
    2624: PETSC_EXTERN PetscClassId PETSC_RANDOM_CLASSID;

    2626: PETSC_EXTERN PetscErrorCode PetscRandomInitializePackage(void);

    2628: /*S
    2629:      PetscRandom - Abstract PETSc object that manages generating random numbers

    2631:    Level: intermediate

    2633:   Concepts: random numbers

    2635: .seealso:  PetscRandomCreate(), PetscRandomGetValue(), PetscRandomType
    2636: S*/
    2637: typedef struct _p_PetscRandom*   PetscRandom;

    2639: /* Dynamic creation and loading functions */
    2640: PETSC_EXTERN PetscFunctionList PetscRandomList;

    2642: PETSC_EXTERN PetscErrorCode PetscRandomRegister(const char[],PetscErrorCode (*)(PetscRandom));
    2643: PETSC_EXTERN PetscErrorCode PetscRandomSetType(PetscRandom, PetscRandomType);
    2644: PETSC_EXTERN PetscErrorCode PetscRandomSetFromOptions(PetscRandom);
    2645: PETSC_EXTERN PetscErrorCode PetscRandomGetType(PetscRandom, PetscRandomType*);
    2646: PETSC_STATIC_INLINE PetscErrorCode PetscRandomViewFromOptions(PetscRandom A,PetscObject obj,const char name[]) {return PetscObjectViewFromOptions((PetscObject)A,obj,name);}
    2647: PETSC_EXTERN PetscErrorCode PetscRandomView(PetscRandom,PetscViewer);

    2649: PETSC_EXTERN PetscErrorCode PetscRandomCreate(MPI_Comm,PetscRandom*);
    2650: PETSC_EXTERN PetscErrorCode PetscRandomGetValue(PetscRandom,PetscScalar*);
    2651: PETSC_EXTERN PetscErrorCode PetscRandomGetValueReal(PetscRandom,PetscReal*);
    2652: PETSC_EXTERN PetscErrorCode PetscRandomGetInterval(PetscRandom,PetscScalar*,PetscScalar*);
    2653: PETSC_EXTERN PetscErrorCode PetscRandomSetInterval(PetscRandom,PetscScalar,PetscScalar);
    2654: PETSC_EXTERN PetscErrorCode PetscRandomSetSeed(PetscRandom,unsigned long);
    2655: PETSC_EXTERN PetscErrorCode PetscRandomGetSeed(PetscRandom,unsigned long *);
    2656: PETSC_EXTERN PetscErrorCode PetscRandomSeed(PetscRandom);
    2657: PETSC_EXTERN PetscErrorCode PetscRandomDestroy(PetscRandom*);

    2659: PETSC_EXTERN PetscErrorCode PetscGetFullPath(const char[],char[],size_t);
    2660: PETSC_EXTERN PetscErrorCode PetscGetRelativePath(const char[],char[],size_t);
    2661: PETSC_EXTERN PetscErrorCode PetscGetWorkingDirectory(char[],size_t);
    2662: PETSC_EXTERN PetscErrorCode PetscGetRealPath(const char[],char[]);
    2663: PETSC_EXTERN PetscErrorCode PetscGetHomeDirectory(char[],size_t);
    2664: PETSC_EXTERN PetscErrorCode PetscTestFile(const char[],char,PetscBool *);
    2665: PETSC_EXTERN PetscErrorCode PetscTestDirectory(const char[],char,PetscBool *);
    2666: PETSC_EXTERN PetscErrorCode PetscMkdir(const char[]);
    2667: PETSC_EXTERN PetscErrorCode PetscRMTree(const char[]);

    2669: PETSC_EXTERN PetscErrorCode PetscBinaryRead(int,void*,PetscInt,PetscDataType);
    2670: PETSC_EXTERN PetscErrorCode PetscBinarySynchronizedRead(MPI_Comm,int,void*,PetscInt,PetscDataType);
    2671: PETSC_EXTERN PetscErrorCode PetscBinarySynchronizedWrite(MPI_Comm,int,void*,PetscInt,PetscDataType,PetscBool );
    2672: PETSC_EXTERN PetscErrorCode PetscBinaryWrite(int,void*,PetscInt,PetscDataType,PetscBool );
    2673: PETSC_EXTERN PetscErrorCode PetscBinaryOpen(const char[],PetscFileMode,int *);
    2674: PETSC_EXTERN PetscErrorCode PetscBinaryClose(int);
    2675: PETSC_EXTERN PetscErrorCode PetscSharedTmp(MPI_Comm,PetscBool  *);
    2676: PETSC_EXTERN PetscErrorCode PetscSharedWorkingDirectory(MPI_Comm,PetscBool  *);
    2677: PETSC_EXTERN PetscErrorCode PetscGetTmp(MPI_Comm,char[],size_t);
    2678: PETSC_EXTERN PetscErrorCode PetscFileRetrieve(MPI_Comm,const char[],char[],size_t,PetscBool *);
    2679: PETSC_EXTERN PetscErrorCode PetscLs(MPI_Comm,const char[],char[],size_t,PetscBool *);
    2680: PETSC_EXTERN PetscErrorCode PetscOpenSocket(const char[],int,int*);

    2682: /*
    2683:    In binary files variables are stored using the following lengths,
    2684:   regardless of how they are stored in memory on any one particular
    2685:   machine. Use these rather then sizeof() in computing sizes for
    2686:   PetscBinarySeek().
    2687: */
    2688: #define PETSC_BINARY_INT_SIZE   (32/8)
    2689: #define PETSC_BINARY_FLOAT_SIZE  (32/8)
    2690: #define PETSC_BINARY_CHAR_SIZE  (8/8)
    2691: #define PETSC_BINARY_SHORT_SIZE  (16/8)
    2692: #define PETSC_BINARY_DOUBLE_SIZE  (64/8)
    2693: #define PETSC_BINARY_SCALAR_SIZE  sizeof(PetscScalar)

    2695: /*E
    2696:   PetscBinarySeekType - argument to PetscBinarySeek()

    2698:   Level: advanced

    2700: .seealso: PetscBinarySeek(), PetscBinarySynchronizedSeek()
    2701: E*/
    2702: typedef enum {PETSC_BINARY_SEEK_SET = 0,PETSC_BINARY_SEEK_CUR = 1,PETSC_BINARY_SEEK_END = 2} PetscBinarySeekType;
    2703: PETSC_EXTERN PetscErrorCode PetscBinarySeek(int,off_t,PetscBinarySeekType,off_t*);
    2704: PETSC_EXTERN PetscErrorCode PetscBinarySynchronizedSeek(MPI_Comm,int,off_t,PetscBinarySeekType,off_t*);
    2705: PETSC_EXTERN PetscErrorCode PetscByteSwap(void *,PetscDataType,PetscInt);

    2707: PETSC_EXTERN PetscErrorCode PetscSetDebugTerminal(const char[]);
    2708: PETSC_EXTERN PetscErrorCode PetscSetDebugger(const char[],PetscBool );
    2709: PETSC_EXTERN PetscErrorCode PetscSetDefaultDebugger(void);
    2710: PETSC_EXTERN PetscErrorCode PetscSetDebuggerFromString(const char*);
    2711: PETSC_EXTERN PetscErrorCode PetscAttachDebugger(void);
    2712: PETSC_EXTERN PetscErrorCode PetscStopForDebugger(void);

    2714: PETSC_EXTERN PetscErrorCode PetscGatherNumberOfMessages(MPI_Comm,const PetscMPIInt[],const PetscMPIInt[],PetscMPIInt*);
    2715: PETSC_EXTERN PetscErrorCode PetscGatherMessageLengths(MPI_Comm,PetscMPIInt,PetscMPIInt,const PetscMPIInt[],PetscMPIInt**,PetscMPIInt**);
    2716: PETSC_EXTERN PetscErrorCode PetscGatherMessageLengths2(MPI_Comm,PetscMPIInt,PetscMPIInt,const PetscMPIInt[],const PetscMPIInt[],PetscMPIInt**,PetscMPIInt**,PetscMPIInt**);
    2717: PETSC_EXTERN PetscErrorCode PetscPostIrecvInt(MPI_Comm,PetscMPIInt,PetscMPIInt,const PetscMPIInt[],const PetscMPIInt[],PetscInt***,MPI_Request**);
    2718: PETSC_EXTERN PetscErrorCode PetscPostIrecvScalar(MPI_Comm,PetscMPIInt,PetscMPIInt,const PetscMPIInt[],const PetscMPIInt[],PetscScalar***,MPI_Request**);
    2719: PETSC_EXTERN PetscErrorCode PetscCommBuildTwoSided(MPI_Comm,PetscMPIInt,MPI_Datatype,PetscMPIInt,const PetscMPIInt*,const void*,PetscMPIInt*,PetscMPIInt**,void*)
    2720:   PetscAttrMPIPointerWithType(6,3);
    2721: PETSC_EXTERN PetscErrorCode PetscCommBuildTwoSidedF(MPI_Comm,PetscMPIInt,MPI_Datatype,PetscMPIInt,const PetscMPIInt[],const void*,PetscMPIInt*,PetscMPIInt**,void*,PetscMPIInt,
    2722:                                                     PetscErrorCode (*send)(MPI_Comm,const PetscMPIInt[],PetscMPIInt,PetscMPIInt,void*,MPI_Request[],void*),
    2723:                                                     PetscErrorCode (*recv)(MPI_Comm,const PetscMPIInt[],PetscMPIInt,void*,MPI_Request[],void*),void *ctx)
    2724:   PetscAttrMPIPointerWithType(6,3);
    2725: PETSC_EXTERN PetscErrorCode PetscCommBuildTwoSidedFReq(MPI_Comm,PetscMPIInt,MPI_Datatype,PetscMPIInt,const PetscMPIInt[],const void*,PetscMPIInt*,PetscMPIInt**,void*,PetscMPIInt,
    2726:                                                        MPI_Request**,MPI_Request**,
    2727:                                                        PetscErrorCode (*send)(MPI_Comm,const PetscMPIInt[],PetscMPIInt,PetscMPIInt,void*,MPI_Request[],void*),
    2728:                                                        PetscErrorCode (*recv)(MPI_Comm,const PetscMPIInt[],PetscMPIInt,void*,MPI_Request[],void*),void *ctx)
    2729:   PetscAttrMPIPointerWithType(6,3);

    2731: /*E
    2732:     PetscBuildTwoSidedType - algorithm for setting up two-sided communication

    2734: $  PETSC_BUILDTWOSIDED_ALLREDUCE - classical algorithm using an MPI_Allreduce with
    2735: $      a buffer of length equal to the communicator size. Not memory-scalable due to
    2736: $      the large reduction size. Requires only MPI-1.
    2737: $  PETSC_BUILDTWOSIDED_IBARRIER - nonblocking algorithm based on MPI_Issend and MPI_Ibarrier.
    2738: $      Proved communication-optimal in Hoefler, Siebert, and Lumsdaine (2010). Requires MPI-3.
    2739: $  PETSC_BUILDTWOSIDED_REDSCATTER - similar to above, but use more optimized function
    2740: $      that only communicates the part of the reduction that is necessary.  Requires MPI-2.

    2742:    Level: developer

    2744: .seealso: PetscCommBuildTwoSided(), PetscCommBuildTwoSidedSetType(), PetscCommBuildTwoSidedGetType()
    2745: E*/
    2746: typedef enum {
    2747:   PETSC_BUILDTWOSIDED_NOTSET = -1,
    2748:   PETSC_BUILDTWOSIDED_ALLREDUCE = 0,
    2749:   PETSC_BUILDTWOSIDED_IBARRIER = 1,
    2750:   PETSC_BUILDTWOSIDED_REDSCATTER = 2
    2751:   /* Updates here must be accompanied by updates in finclude/petscsys.h and the string array in mpits.c */
    2752: } PetscBuildTwoSidedType;
    2753: PETSC_EXTERN const char *const PetscBuildTwoSidedTypes[];
    2754: PETSC_EXTERN PetscErrorCode PetscCommBuildTwoSidedSetType(MPI_Comm,PetscBuildTwoSidedType);
    2755: PETSC_EXTERN PetscErrorCode PetscCommBuildTwoSidedGetType(MPI_Comm,PetscBuildTwoSidedType*);

    2757: PETSC_EXTERN PetscErrorCode PetscSSEIsEnabled(MPI_Comm,PetscBool  *,PetscBool  *);

    2759: /*E
    2760:   InsertMode - Whether entries are inserted or added into vectors or matrices

    2762:   Level: beginner

    2764: .seealso: VecSetValues(), MatSetValues(), VecSetValue(), VecSetValuesBlocked(),
    2765:           VecSetValuesLocal(), VecSetValuesBlockedLocal(), MatSetValuesBlocked(),
    2766:           MatSetValuesBlockedLocal(), MatSetValuesLocal(), VecScatterBegin(), VecScatterEnd()
    2767: E*/
    2768:  typedef enum {NOT_SET_VALUES, INSERT_VALUES, ADD_VALUES, MAX_VALUES, INSERT_ALL_VALUES, ADD_ALL_VALUES, INSERT_BC_VALUES, ADD_BC_VALUES} InsertMode;

    2770: /*MC
    2771:     INSERT_VALUES - Put a value into a vector or matrix, overwrites any previous value

    2773:     Level: beginner

    2775: .seealso: InsertMode, VecSetValues(), MatSetValues(), VecSetValue(), VecSetValuesBlocked(),
    2776:           VecSetValuesLocal(), VecSetValuesBlockedLocal(), MatSetValuesBlocked(), ADD_VALUES,
    2777:           MatSetValuesBlockedLocal(), MatSetValuesLocal(), VecScatterBegin(), VecScatterEnd(), MAX_VALUES

    2779: M*/

    2781: /*MC
    2782:     ADD_VALUES - Adds a value into a vector or matrix, if there previously was no value, just puts the
    2783:                 value into that location

    2785:     Level: beginner

    2787: .seealso: InsertMode, VecSetValues(), MatSetValues(), VecSetValue(), VecSetValuesBlocked(),
    2788:           VecSetValuesLocal(), VecSetValuesBlockedLocal(), MatSetValuesBlocked(), INSERT_VALUES,
    2789:           MatSetValuesBlockedLocal(), MatSetValuesLocal(), VecScatterBegin(), VecScatterEnd(), MAX_VALUES

    2791: M*/

    2793: /*MC
    2794:     MAX_VALUES - Puts the maximum of the scattered/gathered value and the current value into each location

    2796:     Level: beginner

    2798: .seealso: InsertMode, VecScatterBegin(), VecScatterEnd(), ADD_VALUES, INSERT_VALUES

    2800: M*/

    2802: PETSC_EXTERN MPI_Comm PetscObjectComm(PetscObject);

    2804: typedef enum {PETSC_SUBCOMM_GENERAL=0,PETSC_SUBCOMM_CONTIGUOUS=1,PETSC_SUBCOMM_INTERLACED=2} PetscSubcommType;
    2805: PETSC_EXTERN const char *const PetscSubcommTypes[];

    2807: /*S
    2808:    PetscSubcomm - A decomposition of an MPI communicator into subcommunicators

    2810:    Notes: After a call to PetscSubcommSetType(), PetscSubcommSetTypeGeneral(), or PetscSubcommSetFromOptions() one may call
    2811: $     PetscSubcommChild() returns the associated subcommunicator on this process
    2812: $     PetscSubcommContiguousParent() returns a parent communitor but with all child of the same subcommunicator having contiquous rank

    2814:    Sample Usage:
    2815:        PetscSubcommCreate()
    2816:        PetscSubcommSetNumber()
    2817:        PetscSubcommSetType(PETSC_SUBCOMM_INTERLACED);
    2818:        ccomm = PetscSubcommChild()
    2819:        PetscSubcommDestroy()

    2821:    Level: advanced

    2823:    Concepts: communicator, create

    2825:    Notes:
    2826: $   PETSC_SUBCOMM_GENERAL - similar to MPI_Comm_split() each process sets the new communicator (color) they will belong to and the order within that communicator
    2827: $   PETSC_SUBCOMM_CONTIGUOUS - each new communicator contains a set of process with contiquous ranks in the original MPI communicator
    2828: $   PETSC_SUBCOMM_INTERLACED - each new communictor contains a set of processes equally far apart in rank from the others in that new communicator

    2830:    Examaple: Consider a communicator with six processes split into 3 subcommunicators.
    2831: $     PETSC_SUBCOMM_CONTIGUOUS - the first communicator contains rank 0,1  the second rank 2,3 and the third rank 4,5 in the original ordering of the original communicator
    2832: $     PETSC_SUBCOMM_INTERLACED - the first communicator contains rank 0,3, the second 1,4 and the third 2,5

    2834:    Developer Notes: This is used in objects such as PCREDUNDANT() to manage the subcommunicators on which the redundant computations
    2835:       are performed.

    2838: .seealso: PetscSubcommCreate(), PetscSubcommSetNumber(), PetscSubcommSetType(), PetscSubcommView(), PetscSubcommSetFromOptions()

    2840: S*/
    2841: typedef struct _n_PetscSubcomm* PetscSubcomm;

    2843: struct _n_PetscSubcomm {
    2844:   MPI_Comm         parent;           /* parent communicator */
    2845:   MPI_Comm         dupparent;        /* duplicate parent communicator, under which the processors of this subcomm have contiguous rank */
    2846:   MPI_Comm         child;            /* the sub-communicator */
    2847:   PetscMPIInt      n;                /* num of subcommunicators under the parent communicator */
    2848:   PetscMPIInt      color;            /* color of processors belong to this communicator */
    2849:   PetscMPIInt      *subsize;         /* size of subcommunicator[color] */
    2850:   PetscSubcommType type;
    2851:   char             *subcommprefix;
    2852: };

    2854: PETSC_STATIC_INLINE MPI_Comm PetscSubcommParent(PetscSubcomm scomm) {return scomm->parent;}
    2855: PETSC_STATIC_INLINE MPI_Comm PetscSubcommChild(PetscSubcomm scomm) {return scomm->child;}
    2856: PETSC_STATIC_INLINE MPI_Comm PetscSubcommContiguousParent(PetscSubcomm scomm) {return scomm->dupparent;}
    2857: PETSC_EXTERN PetscErrorCode PetscSubcommCreate(MPI_Comm,PetscSubcomm*);
    2858: PETSC_EXTERN PetscErrorCode PetscSubcommDestroy(PetscSubcomm*);
    2859: PETSC_EXTERN PetscErrorCode PetscSubcommSetNumber(PetscSubcomm,PetscInt);
    2860: PETSC_EXTERN PetscErrorCode PetscSubcommSetType(PetscSubcomm,PetscSubcommType);
    2861: PETSC_EXTERN PetscErrorCode PetscSubcommSetTypeGeneral(PetscSubcomm,PetscMPIInt,PetscMPIInt);
    2862: PETSC_EXTERN PetscErrorCode PetscSubcommView(PetscSubcomm,PetscViewer);
    2863: PETSC_EXTERN PetscErrorCode PetscSubcommSetFromOptions(PetscSubcomm);
    2864: PETSC_EXTERN PetscErrorCode PetscSubcommSetOptionsPrefix(PetscSubcomm,const char[]);

    2866: /*S
    2867:    PetscSegBuffer - a segmented extendable buffer

    2869:    Level: developer

    2871: .seealso: PetscSegBufferCreate(), PetscSegBufferGet(), PetscSegBufferExtract(), PetscSegBufferDestroy()
    2872: S*/
    2873: typedef struct _n_PetscSegBuffer *PetscSegBuffer;
    2874: PETSC_EXTERN PetscErrorCode PetscSegBufferCreate(size_t,size_t,PetscSegBuffer*);
    2875: PETSC_EXTERN PetscErrorCode PetscSegBufferDestroy(PetscSegBuffer*);
    2876: PETSC_EXTERN PetscErrorCode PetscSegBufferGet(PetscSegBuffer,size_t,void*);
    2877: PETSC_EXTERN PetscErrorCode PetscSegBufferExtractAlloc(PetscSegBuffer,void*);
    2878: PETSC_EXTERN PetscErrorCode PetscSegBufferExtractTo(PetscSegBuffer,void*);
    2879: PETSC_EXTERN PetscErrorCode PetscSegBufferExtractInPlace(PetscSegBuffer,void*);
    2880: PETSC_EXTERN PetscErrorCode PetscSegBufferGetSize(PetscSegBuffer,size_t*);
    2881: PETSC_EXTERN PetscErrorCode PetscSegBufferUnuse(PetscSegBuffer,size_t);

    2884:  * prevents the compiler from completely erasing the stub. This is called in inner loops so it has to be as fast as
    2885:  * possible. */
    2886: PETSC_STATIC_INLINE PetscErrorCode PetscSegBufferGetInts(PetscSegBuffer seg,PetscInt count,PetscInt *PETSC_RESTRICT *slot) {return PetscSegBufferGet(seg,(size_t)count,(void**)slot);}

    2888: typedef struct _n_PetscOptionsHelpPrinted *PetscOptionsHelpPrinted;
    2889: extern PetscOptionsHelpPrinted PetscOptionsHelpPrintedSingleton;
    2890: PETSC_EXTERN PetscErrorCode PetscOptionsHelpPrintedDestroy(PetscOptionsHelpPrinted*);
    2891: PETSC_EXTERN PetscErrorCode PetscOptionsHelpPrintedCreate(PetscOptionsHelpPrinted*);
    2892: PETSC_EXTERN PetscErrorCode PetscOptionsHelpPrintedCheck(PetscOptionsHelpPrinted,const char*,const char*,PetscBool*);

    2894: PETSC_EXTERN PetscSegBuffer PetscCitationsList;
    2897: /*@C
    2898:       PetscCitationsRegister - Register a bibtex item to obtain credit for an implemented algorithm used in the code.

    2900:      Not Collective - only what is registered on rank 0 of PETSC_COMM_WORLD will be printed

    2902:      Input Parameters:
    2903: +      cite - the bibtex item, formated to displayed on multiple lines nicely
    2904: -      set - a boolean variable initially set to PETSC_FALSE; this is used to insure only a single registration of the citation

    2906:    Level: intermediate

    2908:      Options Database:
    2909: .     -citations [filenmae]   - print out the bibtex entries for the given computation
    2910: @*/
    2911: PETSC_STATIC_INLINE PetscErrorCode PetscCitationsRegister(const char cit[],PetscBool *set)
    2912: {
    2913:   size_t         len;
    2914:   char           *vstring;

    2918:   if (set && *set) return(0);
    2919:   PetscStrlen(cit,&len);
    2920:   PetscSegBufferGet(PetscCitationsList,len,&vstring);
    2921:   PetscMemcpy(vstring,cit,len);
    2922:   if (set) *set = PETSC_TRUE;
    2923:   return(0);
    2924: }

    2926: PETSC_EXTERN PetscErrorCode PetscURLShorten(const char[],char[],size_t);
    2927: PETSC_EXTERN PetscErrorCode PetscGoogleDriveAuthorize(MPI_Comm,char[],char[],size_t);
    2928: PETSC_EXTERN PetscErrorCode PetscGoogleDriveRefresh(MPI_Comm,const char[],char[],size_t);
    2929: PETSC_EXTERN PetscErrorCode PetscGoogleDriveUpload(MPI_Comm,const char[],const char []);

    2931: PETSC_EXTERN PetscErrorCode PetscBoxAuthorize(MPI_Comm,char[],char[],size_t);
    2932: PETSC_EXTERN PetscErrorCode PetscBoxRefresh(MPI_Comm,const char[],char[],char[],size_t);

    2934: PETSC_EXTERN PetscErrorCode PetscTextBelt(MPI_Comm,const char[],const char[],PetscBool*);

    2936: PETSC_EXTERN PetscErrorCode PetscPullJSONValue(const char[],const char[],char[],size_t,PetscBool*);
    2937: PETSC_EXTERN PetscErrorCode PetscPushJSONValue(char[],const char[],const char[],size_t);

    2940: #if defined(PETSC_USE_DEBUG)
    2941: /*
    2942:    Verify that all processes in the communicator have called this from the same line of code
    2943:  */
    2944: PETSC_EXTERN PetscErrorCode PetscAllreduceBarrierCheck(MPI_Comm,PetscMPIInt,int,const char*,const char *);
    2945: #define MPIU_Allreduce(a,b,c,d,e,fcomm) (PetscAllreduceBarrierCheck(fcomm,c,__LINE__,__FUNCT__,__FILE__) || MPI_Allreduce(a,b,c,d,e,fcomm))
    2946: #else
    2947: #define MPIU_Allreduce(a,b,c,d,e,fcomm) MPI_Allreduce(a,b,c,d,e,fcomm)
    2948: #endif

    2950: /* Reset __FUNCT__ in case the user does not define it themselves */

    2954: #endif