Actual source code: petscsystypes.h
petsc-3.12.4 2020-02-04
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      1: #if !defined(PETSCSYSTYPES_H)
      2: #define PETSCSYSTYPES_H

      4: #include <petscconf.h>
      5: #include <petscfix.h>

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

     10:     Level: beginner

     12: .seealso: CHKERRQ, SETERRQ
     13: M*/
     14: typedef int PetscErrorCode;

     16: /*MC

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

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

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

     28:     Level: developer

     30: .seealso: PetscClassIdRegister(), PetscLogEventRegister(), PetscHeaderCreate()
     31: M*/
     32: typedef int PetscClassId;

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

     37:     Level: intermediate

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

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

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

     48: M*/
     49: typedef int PetscMPIInt;

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

     54:     Level: intermediate

     56: .seealso: PetscOptionsGetEnum(), PetscOptionsEnum(), PetscBagRegisterEnum()
     57: M*/
     58: typedef enum { ENUM_DUMMY } PetscEnum;

     60: typedef short PetscShort;
     61: typedef char  PetscChar;
     62: typedef float PetscFloat;

     64: /*MC
     65:   PetscInt - PETSc type that represents an integer, used primarily to
     66:       represent size of arrays and indexing into arrays. Its size can be configured with the option --with-64-bit-indices to be either 32-bit (default) or 64-bit.

     68:   Notes:
     69:   For MPI calls that require datatypes, use MPIU_INT as the datatype for PetscInt. It will automatically work correctly regardless of the size of PetscInt.

     71:   Level: beginner

     73: .seealso: PetscBLASInt, PetscMPIInt, PetscReal, PetscScalar, PetscComplex, PetscInt, MPIU_REAL, MPIU_SCALAR, MPIU_COMPLEX, MPIU_INT
     74: M*/

     76: #if defined(PETSC_HAVE_STDINT_H)
     77: #  include <stdint.h>
     78: #endif
     79: #if defined (PETSC_HAVE_INTTYPES_H)
     80: #  if !defined(__STDC_FORMAT_MACROS)
     81: #    define __STDC_FORMAT_MACROS /* required for using PRId64 from c++ */
     82: #  endif
     83: #  include <inttypes.h>
     84: #  if !defined(PRId64)
     85: #    define PRId64 "ld"
     86: #  endif
     87: #endif

     89: #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 */
     90:    typedef int64_t PetscInt64;
     91: #elif (PETSC_SIZEOF_LONG_LONG == 8)
     92:    typedef long long PetscInt64;
     93: #elif defined(PETSC_HAVE___INT64)
     94:    typedef __int64 PetscInt64;
     95: #else
     96: #  error "cannot determine PetscInt64 type"
     97: #endif

     99: #if defined(PETSC_USE_64BIT_INDICES)
    100:    typedef PetscInt64 PetscInt;
    101: #else
    102:    typedef int PetscInt;
    103: #endif

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

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

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

    116:    Installation Notes:
    117:     ./configure automatically determines the size of the integers used by BLAS/LAPACK except when --with-batch is used
    118:     in that situation one must know (by some other means) if the integers used by BLAS/LAPACK are 64 bit and if so pass the flag --known-64-bit-blas-indice

    120:     MATLAB ships with BLAS and LAPACK that use 64 bit integers, for example if you run ./configure with, the option
    121:      --with-blaslapack-lib=[/Applications/MATLAB_R2010b.app/bin/maci64/libmwblas.dylib,/Applications/MATLAB_R2010b.app/bin/maci64/libmwlapack.dylib]

    123:     MKL ships with both 32 and 64 bit integer versions of the BLAS and LAPACK. If you pass the flag -with-64-bit-blas-indices PETSc will link
    124:     against the 64 bit version, otherwise it use the 32 bit version

    126:     OpenBLAS can be built to use 64 bit integers. The ./configure options --download-openblas -with-64-bit-blas-indices will build a 64 bit integer version

    128:     External packages such as hypre, ML, SuperLU etc do not provide any support for passing 64 bit integers to BLAS/LAPACK so cannot
    129:     be used with PETSc when PETSc links against 64 bit integer BLAS/LAPACK. ./configure will generate an error if you attempt to link PETSc against any of
    130:     these external libraries while using 64 bit integer BLAS/LAPACK.

    132:    Level: intermediate

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

    136: M*/
    137: #if defined(PETSC_HAVE_64BIT_BLAS_INDICES)
    138:    typedef PetscInt64 PetscBLASInt;
    139: #else
    140:    typedef int PetscBLASInt;
    141: #endif

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

    146:    Level: beginner

    148:    Developer Note:
    149:    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
    150:       boolean values. It is not easy to have a simple macro that that will work properly in all circumstances with all three mechanisms.

    152: .seealso: PETSC_TRUE, PETSC_FALSE, PetscNot()
    153: E*/
    154: typedef enum { PETSC_FALSE,PETSC_TRUE } PetscBool;

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

    160:    Notes:
    161:    For MPI calls that require datatypes, use MPIU_REAL as the datatype for PetscScalar and MPIU_SUM, MPIU_MAX, etc. for operations.
    162:           They will automatically work correctly regardless of the size of PetscReal.

    164:           See PetscScalar for details on how to ./configure the size of PetscReal.

    166:    Level: beginner

    168: .seealso: PetscScalar, PetscComplex, PetscInt, MPIU_REAL, MPIU_SCALAR, MPIU_COMPLEX, MPIU_INT
    169: M*/

    171: #if defined(PETSC_USE_REAL_SINGLE)
    172:    typedef float PetscReal;
    173: #elif defined(PETSC_USE_REAL_DOUBLE)
    174:    typedef double PetscReal;
    175: #elif defined(PETSC_USE_REAL___FLOAT128)
    176: #  if defined(__cplusplus)
    177:      extern "C" {
    178: #  endif
    179: #  include <quadmath.h>
    180: #  if defined(__cplusplus)
    181:      }
    182: #  endif
    183:    typedef __float128 PetscReal;
    184: #elif defined(PETSC_USE_REAL___FP16)
    185:    typedef __fp16 PetscReal;
    186: #endif /* PETSC_USE_REAL_* */

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

    191:    Synopsis:
    192:    #include <petscsys.h>
    193:    PetscComplex number = 1. + 2.*PETSC_i;

    195:    Notes:
    196:    For MPI calls that require datatypes, use MPIU_COMPLEX as the datatype for PetscComplex and MPIU_SUM etc for operations.
    197:           They will automatically work correctly regardless of the size of PetscComplex.

    199:           See PetscScalar for details on how to ./configure the size of PetscReal

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

    203:    Level: beginner

    205: .seealso: PetscReal, PetscScalar, PetscComplex, PetscInt, MPIU_REAL, MPIU_SCALAR, MPIU_COMPLEX, MPIU_INT, PETSC_i
    206: M*/

    208: #if defined(__cplusplus) && defined(PETSC_HAVE_CXX_COMPLEX) && !defined(PETSC_USE_REAL___FLOAT128)
    209: #  if !defined(PETSC_SKIP_COMPLEX)
    210:      /* C++ support of complex number */
    211: #    define PETSC_HAVE_COMPLEX 1
    212: #    if defined(PETSC_HAVE_CUDA) && __CUDACC_VER_MAJOR__ > 6
    213:        /* complex headers in thrust only available in CUDA 7.0 and above */
    214: #      define petsccomplexlib thrust
    215: #      include <thrust/complex.h>
    216: #    else
    217: #      define petsccomplexlib std
    218: #      include <complex>
    219: #    endif
    220: #    if defined(PETSC_USE_REAL_SINGLE)
    221:        typedef petsccomplexlib::complex<float> PetscComplex;
    222: #    elif defined(PETSC_USE_REAL_DOUBLE)
    223:        typedef petsccomplexlib::complex<double> PetscComplex;
    224: #    elif defined(PETSC_USE_REAL___FLOAT128)
    225:        typedef petsccomplexlib::complex<__float128> PetscComplex; /* Notstandard and not expected to work, use __complex128 */
    226: #    endif  /* PETSC_USE_REAL_ */
    227: #  endif  /* ! PETSC_SKIP_COMPLEX */
    228: #  if !defined(PETSC_SKIP_CXX_COMPLEX_FIX)
    229: #    include <petsccxxcomplexfix.h>
    230: #  endif /* ! PETSC_SKIP_CXX_COMPLEX_FIX */
    231: #elif defined(PETSC_HAVE_C99_COMPLEX) && !defined(PETSC_USE_REAL___FP16)
    232: #  if !defined(PETSC_SKIP_COMPLEX)
    233: #    define PETSC_HAVE_COMPLEX 1
    234: #    include <complex.h>
    235: #    if defined(PETSC_USE_REAL_SINGLE) || defined(PETSC_USE_REAL___FP16)
    236:        typedef float _Complex PetscComplex;
    237: #    elif defined(PETSC_USE_REAL_DOUBLE)
    238:        typedef double _Complex PetscComplex;
    239: #    elif defined(PETSC_USE_REAL___FLOAT128)
    240:        typedef __complex128 PetscComplex;
    241: #    endif /* PETSC_USE_REAL_* */
    242: #  endif /* !PETSC_SKIP_COMPLEX */
    243: #elif (defined(PETSC_USE_COMPLEX) && !defined(PETSC_SKIP_COMPLEX))
    244: #  error "PETSc was configured --with-scalar-type=complex, but a language-appropriate complex library is not available"
    245: #endif /* !PETSC_SKIP_COMPLEX */

    247: /*MC
    248:    PetscScalar - PETSc type that represents either a double precision real number, a double precision
    249:        complex number, a single precision real number, a __float128 real or complex or a __fp16 real - if the code is configured
    250:        with --with-scalar-type=real,complex --with-precision=single,double,__float128,__fp16

    252:    Notes:
    253:    For MPI calls that require datatypes, use MPIU_SCALAR as the datatype for PetscScalar and MPIU_SUM, MPIU_MAX etc for operations. They will automatically work correctly regardless of the size of PetscScalar.

    255:    Level: beginner

    257: .seealso: PetscReal, PetscComplex, PetscInt, MPIU_REAL, MPIU_SCALAR, MPIU_COMPLEX, MPIU_INT, PetscRealPart(), PetscImaginaryPart()
    258: M*/

    260: #if (defined(PETSC_USE_COMPLEX) && !defined(PETSC_SKIP_COMPLEX))
    261:    typedef PetscComplex PetscScalar;
    262: #else /* PETSC_USE_COMPLEX */
    263:    typedef PetscReal PetscScalar;
    264: #endif /* PETSC_USE_COMPLEX */

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

    269:    Level: beginner

    271: $   PETSC_COPY_VALUES - the array values are copied into new space, the user is free to reuse or delete the passed in array
    272: $   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
    273: $                       delete the array. The array MUST have been obtained with PetscMalloc(). Hence this mode cannot be used in Fortran.
    274: $   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
    275:                         the array but the user must delete the array after the object is destroyed.

    277: E*/
    278: typedef enum {PETSC_COPY_VALUES, PETSC_OWN_POINTER, PETSC_USE_POINTER} PetscCopyMode;

    280: /*MC
    281:     PETSC_FALSE - False value of PetscBool

    283:     Level: beginner

    285:     Note:
    286:     Zero integer

    288: .seealso: PetscBool, PETSC_TRUE
    289: M*/

    291: /*MC
    292:     PETSC_TRUE - True value of PetscBool

    294:     Level: beginner

    296:     Note:
    297:     Nonzero integer

    299: .seealso: PetscBool, PETSC_FALSE
    300: M*/

    302: /*MC
    303:     PetscLogDouble - Used for logging times

    305:   Notes:
    306:   Contains double precision numbers that are not used in the numerical computations, but rather in logging, timing etc.

    308:   Level: developer

    310: M*/
    311: typedef double PetscLogDouble;

    313: /*E
    314:     PetscDataType - Used for handling different basic data types.

    316:    Level: beginner

    318:    Notes:
    319:    Use of this should be avoided if one can directly use MPI_Datatype instead.

    321:    PETSC_INT is the datatype for a PetscInt, regardless of whether it is 4 or 8 bytes.
    322:    PETSC_REAL, PETSC_COMPLEX and PETSC_SCALAR are the datatypes for PetscReal, PetscComplex and PetscScalar, regardless of their sizes.

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

    327:    If you change any values in PetscDatatype make sure you update their usage in
    328:    share/petsc/matlab/PetscBagRead.m

    330:    TODO: Add PETSC_INT32 and remove use of improper PETSC_ENUM

    332: .seealso: PetscBinaryRead(), PetscBinaryWrite(), PetscDataTypeToMPIDataType(),
    333:           PetscDataTypeGetSize()

    335: E*/
    336: typedef enum {PETSC_DATATYPE_UNKNOWN = 0,
    337:               PETSC_DOUBLE = 1, PETSC_COMPLEX = 2, PETSC_LONG = 3, PETSC_SHORT = 4, PETSC_FLOAT = 5,
    338:               PETSC_CHAR = 6, PETSC_BIT_LOGICAL = 7, PETSC_ENUM = 8, PETSC_BOOL = 9, PETSC___FLOAT128 = 10,
    339:               PETSC_OBJECT = 11, PETSC_FUNCTION = 12, PETSC_STRING = 13, PETSC___FP16 = 14, PETSC_STRUCT = 15,
    340:               PETSC_INT = 16, PETSC_INT64 = 17} PetscDataType;

    342: #if defined(PETSC_USE_REAL_SINGLE)
    343: #  define PETSC_REAL PETSC_FLOAT
    344: #elif defined(PETSC_USE_REAL_DOUBLE)
    345: #  define PETSC_REAL PETSC_DOUBLE
    346: #elif defined(PETSC_USE_REAL___FLOAT128)
    347: #  define PETSC_REAL PETSC___FLOAT128
    348: #elif defined(PETSC_USE_REAL___FP16)
    349: #  define PETSC_REAL PETSC___FP16
    350: #else
    351: #  define PETSC_REAL PETSC_DOUBLE
    352: #endif

    354: #if defined(PETSC_USE_COMPLEX)
    355: #  define PETSC_SCALAR PETSC_COMPLEX
    356: #else
    357: #  define PETSC_SCALAR PETSC_REAL
    358: #endif

    360: #define PETSC_FORTRANADDR PETSC_LONG

    362: /*S
    363:     PetscToken - 'Token' used for managing tokenizing strings

    365:   Level: intermediate

    367: .seealso: PetscTokenCreate(), PetscTokenFind(), PetscTokenDestroy()
    368: S*/
    369: typedef struct _p_PetscToken* PetscToken;

    371: /*S
    372:      PetscObject - any PETSc object, PetscViewer, Mat, Vec, KSP etc

    374:    Level: beginner

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

    379: .seealso:  PetscObjectDestroy(), PetscObjectView(), PetscObjectGetName(), PetscObjectSetName(), PetscObjectReference(), PetscObjectDereference()
    380: S*/
    381: typedef struct _p_PetscObject* PetscObject;

    383: /*MC
    384:     PetscObjectId - unique integer Id for a PetscObject

    386:     Level: developer

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

    391: .seealso: PetscObjectState, PetscObjectGetId()
    392: M*/
    393: #if defined(PETSC_USING_F90) && !defined(PETSC_USE_FORTRANKIND) /* compaq F90 */
    394:    typedef int PetscObjectId;
    395: #else
    396:    typedef PetscInt64 PetscObjectId;
    397: #endif

    399: /*MC
    400:     PetscObjectState - integer state for a PetscObject

    402:     Level: developer

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

    408: .seealso: PetscObjectId, PetscObjectStateGet(), PetscObjectStateIncrease(), PetscObjectStateSet()
    409: M*/
    410: #if defined(PETSC_USING_F90) && !defined(PETSC_USE_FORTRANKIND) /* compaq F90 */
    411:    typedef int PetscObjectState;
    412: #else
    413:    typedef PetscInt64 PetscObjectState;
    414: #endif

    416: /*S
    417:      PetscFunctionList - Linked list of functions, possibly stored in dynamic libraries, accessed
    418:       by string name

    420:    Level: advanced

    422: .seealso:  PetscFunctionListAdd(), PetscFunctionListDestroy(), PetscOpFlist
    423: S*/
    424: typedef struct _n_PetscFunctionList *PetscFunctionList;

    426: /*E
    427:   PetscFileMode - Access mode for a file.

    429:   Level: beginner

    431: $  FILE_MODE_READ - open a file at its beginning for reading
    432: $  FILE_MODE_WRITE - open a file at its beginning for writing (will create if the file does not exist)
    433: $  FILE_MODE_APPEND - open a file at end for writing
    434: $  FILE_MODE_UPDATE - open a file for updating, meaning for reading and writing
    435: $  FILE_MODE_APPEND_UPDATE - open a file for updating, meaning for reading and writing, at the end

    437: .seealso: PetscViewerFileSetMode()
    438: E*/
    439: typedef enum {FILE_MODE_READ, FILE_MODE_WRITE, FILE_MODE_APPEND, FILE_MODE_UPDATE, FILE_MODE_APPEND_UPDATE} PetscFileMode;

    441: typedef void* PetscDLHandle;
    442: typedef enum {PETSC_DL_DECIDE=0,PETSC_DL_NOW=1,PETSC_DL_LOCAL=2} PetscDLMode;

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

    447:    Level: developer

    449:    Notes:
    450:    Used by PetscObjectCompose() and PetscObjectQuery()

    452: .seealso:  PetscObjectListAdd(), PetscObjectListDestroy(), PetscObjectListFind(), PetscObjectCompose(), PetscObjectQuery(), PetscFunctionList
    453: S*/
    454: typedef struct _n_PetscObjectList *PetscObjectList;

    456: /*S
    457:      PetscDLLibrary - Linked list of dynamics libraries to search for functions

    459:    Level: advanced

    461: .seealso:  PetscDLLibraryOpen()
    462: S*/
    463: typedef struct _n_PetscDLLibrary *PetscDLLibrary;

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

    468:    Level: advanced

    470: .seealso:  PetscObject, PetscContainerCreate()
    471: S*/
    472: typedef struct _p_PetscContainer*  PetscContainer;

    474: /*S
    475:      PetscRandom - Abstract PETSc object that manages generating random numbers

    477:    Level: intermediate

    479: .seealso:  PetscRandomCreate(), PetscRandomGetValue(), PetscRandomType
    480: S*/
    481: typedef struct _p_PetscRandom*   PetscRandom;

    483: /*
    484:    In binary files variables are stored using the following lengths,
    485:   regardless of how they are stored in memory on any one particular
    486:   machine. Use these rather then sizeof() in computing sizes for
    487:   PetscBinarySeek().
    488: */
    489: #define PETSC_BINARY_INT_SIZE    (32/8)
    490: #define PETSC_BINARY_FLOAT_SIZE  (32/8)
    491: #define PETSC_BINARY_CHAR_SIZE   (8/8)
    492: #define PETSC_BINARY_SHORT_SIZE  (16/8)
    493: #define PETSC_BINARY_DOUBLE_SIZE (64/8)
    494: #define PETSC_BINARY_SCALAR_SIZE sizeof(PetscScalar)

    496: /*E
    497:   PetscBinarySeekType - argument to PetscBinarySeek()

    499:   Level: advanced

    501: .seealso: PetscBinarySeek(), PetscBinarySynchronizedSeek()
    502: E*/
    503: typedef enum {PETSC_BINARY_SEEK_SET = 0,PETSC_BINARY_SEEK_CUR = 1,PETSC_BINARY_SEEK_END = 2} PetscBinarySeekType;

    505: /*E
    506:     PetscBuildTwoSidedType - algorithm for setting up two-sided communication

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

    516:    Level: developer

    518: .seealso: PetscCommBuildTwoSided(), PetscCommBuildTwoSidedSetType(), PetscCommBuildTwoSidedGetType()
    519: E*/
    520: typedef enum {
    521:   PETSC_BUILDTWOSIDED_NOTSET = -1,
    522:   PETSC_BUILDTWOSIDED_ALLREDUCE = 0,
    523:   PETSC_BUILDTWOSIDED_IBARRIER = 1,
    524:   PETSC_BUILDTWOSIDED_REDSCATTER = 2
    525:   /* Updates here must be accompanied by updates in finclude/petscsys.h and the string array in mpits.c */
    526: } PetscBuildTwoSidedType;

    528: /*E
    529:   InsertMode - Whether entries are inserted or added into vectors or matrices

    531:   Level: beginner

    533: .seealso: VecSetValues(), MatSetValues(), VecSetValue(), VecSetValuesBlocked(),
    534:           VecSetValuesLocal(), VecSetValuesBlockedLocal(), MatSetValuesBlocked(),
    535:           MatSetValuesBlockedLocal(), MatSetValuesLocal(), VecScatterBegin(), VecScatterEnd()
    536: E*/
    537:  typedef enum {NOT_SET_VALUES, INSERT_VALUES, ADD_VALUES, MAX_VALUES, MIN_VALUES, INSERT_ALL_VALUES, ADD_ALL_VALUES, INSERT_BC_VALUES, ADD_BC_VALUES} InsertMode;

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

    542:     Level: beginner

    544: .seealso: InsertMode, VecSetValues(), MatSetValues(), VecSetValue(), VecSetValuesBlocked(),
    545:           VecSetValuesLocal(), VecSetValuesBlockedLocal(), MatSetValuesBlocked(), ADD_VALUES,
    546:           MatSetValuesBlockedLocal(), MatSetValuesLocal(), VecScatterBegin(), VecScatterEnd(), MAX_VALUES

    548: M*/

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

    554:     Level: beginner

    556: .seealso: InsertMode, VecSetValues(), MatSetValues(), VecSetValue(), VecSetValuesBlocked(),
    557:           VecSetValuesLocal(), VecSetValuesBlockedLocal(), MatSetValuesBlocked(), INSERT_VALUES,
    558:           MatSetValuesBlockedLocal(), MatSetValuesLocal(), VecScatterBegin(), VecScatterEnd(), MAX_VALUES

    560: M*/

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

    565:     Level: beginner

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

    569: M*/

    571: /*MC
    572:     MIN_VALUES - Puts the minimal of the scattered/gathered value and the current value into each location

    574:     Level: beginner

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

    578: M*/

    581: /*S
    582:    PetscSubcomm - A decomposition of an MPI communicator into subcommunicators

    584:    Notes:
    585:    After a call to PetscSubcommSetType(), PetscSubcommSetTypeGeneral(), or PetscSubcommSetFromOptions() one may call
    586: $     PetscSubcommChild() returns the associated subcommunicator on this process
    587: $     PetscSubcommContiguousParent() returns a parent communitor but with all child of the same subcommunicator having contiguous rank

    589:    Sample Usage:
    590:        PetscSubcommCreate()
    591:        PetscSubcommSetNumber()
    592:        PetscSubcommSetType(PETSC_SUBCOMM_INTERLACED);
    593:        ccomm = PetscSubcommChild()
    594:        PetscSubcommDestroy()

    596:    Level: advanced

    598:    Notes:
    599: $   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
    600: $   PETSC_SUBCOMM_CONTIGUOUS - each new communicator contains a set of process with contiguous ranks in the original MPI communicator
    601: $   PETSC_SUBCOMM_INTERLACED - each new communictor contains a set of processes equally far apart in rank from the others in that new communicator

    603:    Example: Consider a communicator with six processes split into 3 subcommunicators.
    604: $     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
    605: $     PETSC_SUBCOMM_INTERLACED - the first communicator contains rank 0,3, the second 1,4 and the third 2,5

    607:    Developer Notes:
    608:    This is used in objects such as PCREDUNDANT to manage the subcommunicators on which the redundant computations
    609:       are performed.

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

    614: S*/
    615: typedef struct _n_PetscSubcomm* PetscSubcomm;
    616: typedef enum {PETSC_SUBCOMM_GENERAL=0,PETSC_SUBCOMM_CONTIGUOUS=1,PETSC_SUBCOMM_INTERLACED=2} PetscSubcommType;

    618: /*S
    619:      PetscHeap - A simple class for managing heaps

    621:    Level: intermediate

    623: .seealso:  PetscHeapCreate(), PetscHeapAdd(), PetscHeapPop(), PetscHeapPeek(), PetscHeapStash(), PetscHeapUnstash(), PetscHeapView(), PetscHeapDestroy()
    624: S*/
    625: typedef struct _PetscHeap *PetscHeap;

    627: typedef struct _n_PetscShmComm* PetscShmComm;
    628: typedef struct _n_PetscOmpCtrl* PetscOmpCtrl;

    630: /*S
    631:    PetscSegBuffer - a segmented extendable buffer

    633:    Level: developer

    635: .seealso: PetscSegBufferCreate(), PetscSegBufferGet(), PetscSegBufferExtract(), PetscSegBufferDestroy()
    636: S*/
    637: typedef struct _n_PetscSegBuffer *PetscSegBuffer;

    639: typedef struct _n_PetscOptionsHelpPrinted *PetscOptionsHelpPrinted;

    641: #endif