Actual source code: petscis.h
petsc-3.12.1 2019-10-22
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      1: /*
      2:    An index set is a generalization of a subset of integers.  Index sets
      3:    are used for defining scatters and gathers.
      4: */
      5: #if !defined(PETSCIS_H)
      6: #define PETSCIS_H
      7:  #include <petscsys.h>
      8:  #include <petscsftypes.h>
      9:  #include <petscsectiontypes.h>
     10:  #include <petscistypes.h>

     12: #define IS_FILE_CLASSID 1211218
     13: PETSC_EXTERN PetscClassId IS_CLASSID;

     15: PETSC_EXTERN PetscErrorCode ISInitializePackage(void);

     17: /*J
     18:     ISType - String with the name of a PETSc index set type

     20:    Level: beginner

     22: .seealso: ISSetType(), IS, ISCreate(), ISRegister()
     23: J*/
     24: typedef const char* ISType;
     25: #define ISGENERAL      "general"
     26: #define ISSTRIDE       "stride"
     27: #define ISBLOCK        "block"

     29: /* Dynamic creation and loading functions */
     30: PETSC_EXTERN PetscFunctionList ISList;
     31: PETSC_EXTERN PetscErrorCode ISSetType(IS, ISType);
     32: PETSC_EXTERN PetscErrorCode ISGetType(IS, ISType *);
     33: PETSC_EXTERN PetscErrorCode ISRegister(const char[],PetscErrorCode (*)(IS));
     34: PETSC_EXTERN PetscErrorCode ISCreate(MPI_Comm,IS*);

     36: /*
     37:     Default index set data structures that PETSc provides.
     38: */
     39: PETSC_EXTERN PetscErrorCode ISCreateGeneral(MPI_Comm,PetscInt,const PetscInt[],PetscCopyMode,IS *);
     40: PETSC_EXTERN PetscErrorCode ISGeneralSetIndices(IS,PetscInt,const PetscInt[],PetscCopyMode);
     41: PETSC_EXTERN PetscErrorCode ISCreateBlock(MPI_Comm,PetscInt,PetscInt,const PetscInt[],PetscCopyMode,IS *);
     42: PETSC_EXTERN PetscErrorCode ISBlockSetIndices(IS,PetscInt,PetscInt,const PetscInt[],PetscCopyMode);
     43: PETSC_EXTERN PetscErrorCode ISCreateStride(MPI_Comm,PetscInt,PetscInt,PetscInt,IS *);
     44: PETSC_EXTERN PetscErrorCode ISStrideSetStride(IS,PetscInt,PetscInt,PetscInt);

     46: PETSC_EXTERN PetscErrorCode ISDestroy(IS*);
     47: PETSC_EXTERN PetscErrorCode ISSetPermutation(IS);
     48: PETSC_EXTERN PetscErrorCode ISPermutation(IS,PetscBool *);
     49: PETSC_EXTERN PetscErrorCode ISSetIdentity(IS);
     50: PETSC_EXTERN PetscErrorCode ISIdentity(IS,PetscBool *);
     51: PETSC_EXTERN PetscErrorCode ISContiguousLocal(IS,PetscInt,PetscInt,PetscInt*,PetscBool*);

     53: PETSC_EXTERN PetscErrorCode ISGetIndices(IS,const PetscInt *[]);
     54: PETSC_EXTERN PetscErrorCode ISRestoreIndices(IS,const PetscInt *[]);
     55: PETSC_EXTERN PetscErrorCode ISGetTotalIndices(IS,const PetscInt *[]);
     56: PETSC_EXTERN PetscErrorCode ISRestoreTotalIndices(IS,const PetscInt *[]);
     57: PETSC_EXTERN PetscErrorCode ISGetNonlocalIndices(IS,const PetscInt *[]);
     58: PETSC_EXTERN PetscErrorCode ISRestoreNonlocalIndices(IS,const PetscInt *[]);
     59: PETSC_EXTERN PetscErrorCode ISGetNonlocalIS(IS, IS *is);
     60: PETSC_EXTERN PetscErrorCode ISRestoreNonlocalIS(IS, IS *is);
     61: PETSC_EXTERN PetscErrorCode ISGetSize(IS,PetscInt *);
     62: PETSC_EXTERN PetscErrorCode ISGetLocalSize(IS,PetscInt *);
     63: PETSC_EXTERN PetscErrorCode ISInvertPermutation(IS,PetscInt,IS*);
     64: PETSC_EXTERN PetscErrorCode ISView(IS,PetscViewer);
     65: PETSC_STATIC_INLINE PetscErrorCode ISViewFromOptions(IS A,PetscObject obj,const char name[]) {return PetscObjectViewFromOptions((PetscObject)A,obj,name);}
     66: PETSC_EXTERN PetscErrorCode ISLoad(IS,PetscViewer);
     67: PETSC_EXTERN PetscErrorCode ISEqual(IS,IS,PetscBool  *);
     68: PETSC_EXTERN PetscErrorCode ISEqualUnsorted(IS,IS,PetscBool *);
     69: PETSC_EXTERN PetscErrorCode ISSort(IS);
     70: PETSC_EXTERN PetscErrorCode ISSortRemoveDups(IS);
     71: PETSC_EXTERN PetscErrorCode ISSorted(IS,PetscBool  *);
     72: PETSC_EXTERN PetscErrorCode ISDifference(IS,IS,IS*);
     73: PETSC_EXTERN PetscErrorCode ISSum(IS,IS,IS*);
     74: PETSC_EXTERN PetscErrorCode ISExpand(IS,IS,IS*);
     75: PETSC_EXTERN PetscErrorCode ISIntersect(IS,IS,IS*);
     76: PETSC_EXTERN PetscErrorCode ISGetMinMax(IS,PetscInt*,PetscInt*);

     78: PETSC_EXTERN PetscErrorCode ISLocate(IS,PetscInt,PetscInt*);
     79: PETSC_EXTERN PetscErrorCode ISGetPointRange(IS,PetscInt*,PetscInt*,const PetscInt**);
     80: PETSC_EXTERN PetscErrorCode ISRestorePointRange(IS,PetscInt*,PetscInt*,const PetscInt**);
     81: PETSC_EXTERN PetscErrorCode ISGetPointSubrange(IS,PetscInt,PetscInt,const PetscInt*);

     83: PETSC_EXTERN PetscErrorCode ISBlockGetIndices(IS,const PetscInt *[]);
     84: PETSC_EXTERN PetscErrorCode ISBlockRestoreIndices(IS,const PetscInt *[]);
     85: PETSC_EXTERN PetscErrorCode ISBlockGetLocalSize(IS,PetscInt *);
     86: PETSC_EXTERN PetscErrorCode ISBlockGetSize(IS,PetscInt *);
     87: PETSC_EXTERN PetscErrorCode ISGetBlockSize(IS,PetscInt*);
     88: PETSC_EXTERN PetscErrorCode ISSetBlockSize(IS,PetscInt);

     90: PETSC_EXTERN PetscErrorCode ISStrideGetInfo(IS,PetscInt *,PetscInt*);

     92: PETSC_EXTERN PetscErrorCode ISToGeneral(IS);

     94: PETSC_EXTERN PetscErrorCode ISDuplicate(IS,IS*);
     95: PETSC_EXTERN PetscErrorCode ISCopy(IS,IS);
     96: PETSC_EXTERN PetscErrorCode ISAllGather(IS,IS*);
     97: PETSC_EXTERN PetscErrorCode ISComplement(IS,PetscInt,PetscInt,IS*);
     98: PETSC_EXTERN PetscErrorCode ISConcatenate(MPI_Comm,PetscInt,const IS[],IS*);
     99: PETSC_EXTERN PetscErrorCode ISListToPair(MPI_Comm,PetscInt, IS[],IS*,IS*);
    100: PETSC_EXTERN PetscErrorCode ISPairToList(IS,IS,PetscInt*, IS *[]);
    101: PETSC_EXTERN PetscErrorCode ISEmbed(IS,IS,PetscBool,IS*);
    102: PETSC_EXTERN PetscErrorCode ISSortPermutation(IS,PetscBool,IS*);
    103: PETSC_EXTERN PetscErrorCode ISOnComm(IS,MPI_Comm,PetscCopyMode,IS*);
    104: PETSC_EXTERN PetscErrorCode ISRenumber(IS,IS,PetscInt*,IS*);
    105: PETSC_EXTERN PetscErrorCode ISCreateSubIS(IS,IS,IS*);

    107: PETSC_EXTERN PetscErrorCode ISGeneralFilter(IS,PetscInt,PetscInt);

    109: /* --------------------------------------------------------------------------*/
    110: PETSC_EXTERN PetscClassId IS_LTOGM_CLASSID;

    112: /*E
    113:     ISGlobalToLocalMappingMode - Indicates mapping behavior if global indices are missing

    115:    IS_GTOLM_MASK - missing global indices are masked by mapping them to a local index of -1
    116:    IS_GTOLM_DROP - missing global indices are dropped

    118:    Level: beginner

    120: .seealso: ISGlobalToLocalMappingApplyBlock(), ISGlobalToLocalMappingApply()

    122: E*/
    123: typedef enum {IS_GTOLM_MASK,IS_GTOLM_DROP} ISGlobalToLocalMappingMode;

    125: /*J
    126:     ISLocalToGlobalMappingType - String with the name of a mapping method

    128:    Level: beginner

    130: .seealso: ISLocalToGlobalMappingSetType(), ISLocalToGlobalSetFromOptions()
    131: J*/
    132: typedef const char* ISLocalToGlobalMappingType;
    133: #define ISLOCALTOGLOBALMAPPINGBASIC "basic"
    134: #define ISLOCALTOGLOBALMAPPINGHASH  "hash"

    136: PETSC_EXTERN PetscErrorCode ISLocalToGlobalMappingSetType(ISLocalToGlobalMapping,ISLocalToGlobalMappingType);
    137: PETSC_EXTERN PetscErrorCode ISLocalToGlobalMappingRegister(const char[],PetscErrorCode (*)(ISLocalToGlobalMapping));
    138: PETSC_EXTERN PetscErrorCode ISLocalToGlobalMappingRegisterAll(void);
    139: PETSC_EXTERN PetscErrorCode ISLocalToGlobalMappingCreate(MPI_Comm,PetscInt,PetscInt,const PetscInt[],PetscCopyMode,ISLocalToGlobalMapping*);
    140: PETSC_EXTERN PetscErrorCode ISLocalToGlobalMappingCreateIS(IS,ISLocalToGlobalMapping *);
    141: PETSC_EXTERN PetscErrorCode ISLocalToGlobalMappingCreateSF(PetscSF,PetscInt,ISLocalToGlobalMapping*);
    142: PETSC_EXTERN PetscErrorCode ISLocalToGlobalMappingSetFromOptions(ISLocalToGlobalMapping);
    143: PETSC_EXTERN PetscErrorCode ISLocalToGlobalMappingSetUp(ISLocalToGlobalMapping);
    144: PETSC_EXTERN PetscErrorCode ISLocalToGlobalMappingView(ISLocalToGlobalMapping,PetscViewer);
    145: PETSC_STATIC_INLINE PetscErrorCode ISLocalToGlobalMappingViewFromOptions(ISLocalToGlobalMapping A,PetscObject B,const char name[]) {return PetscObjectViewFromOptions((PetscObject)A,B,name);}

    147: PETSC_EXTERN PetscErrorCode ISLocalToGlobalMappingDestroy(ISLocalToGlobalMapping*);
    148: PETSC_EXTERN PetscErrorCode ISLocalToGlobalMappingApply(ISLocalToGlobalMapping,PetscInt,const PetscInt[],PetscInt[]);
    149: PETSC_EXTERN PetscErrorCode ISLocalToGlobalMappingApplyBlock(ISLocalToGlobalMapping,PetscInt,const PetscInt[],PetscInt[]);
    150: PETSC_EXTERN PetscErrorCode ISLocalToGlobalMappingApplyIS(ISLocalToGlobalMapping,IS,IS*);
    151: PETSC_EXTERN PetscErrorCode ISGlobalToLocalMappingApply(ISLocalToGlobalMapping,ISGlobalToLocalMappingMode,PetscInt,const PetscInt[],PetscInt*,PetscInt[]);
    152: PETSC_EXTERN PetscErrorCode ISGlobalToLocalMappingApplyBlock(ISLocalToGlobalMapping,ISGlobalToLocalMappingMode,PetscInt,const PetscInt[],PetscInt*,PetscInt[]);
    153: PETSC_EXTERN PetscErrorCode ISGlobalToLocalMappingApplyIS(ISLocalToGlobalMapping,ISGlobalToLocalMappingMode,IS,IS*);
    154: PETSC_EXTERN PetscErrorCode ISLocalToGlobalMappingGetSize(ISLocalToGlobalMapping,PetscInt*);
    155: PETSC_EXTERN PetscErrorCode ISLocalToGlobalMappingGetNodeInfo(ISLocalToGlobalMapping,PetscInt*,PetscInt*[],PetscInt**[]);
    156: PETSC_EXTERN PetscErrorCode ISLocalToGlobalMappingRestoreNodeInfo(ISLocalToGlobalMapping,PetscInt*,PetscInt*[],PetscInt**[]);
    157: PETSC_EXTERN PetscErrorCode ISLocalToGlobalMappingGetInfo(ISLocalToGlobalMapping,PetscInt*,PetscInt*[],PetscInt*[],PetscInt**[]);
    158: PETSC_EXTERN PetscErrorCode ISLocalToGlobalMappingRestoreInfo(ISLocalToGlobalMapping,PetscInt*,PetscInt*[],PetscInt*[],PetscInt**[]);
    159: PETSC_EXTERN PetscErrorCode ISLocalToGlobalMappingGetBlockInfo(ISLocalToGlobalMapping,PetscInt*,PetscInt*[],PetscInt*[],PetscInt**[]);
    160: PETSC_EXTERN PetscErrorCode ISLocalToGlobalMappingRestoreBlockInfo(ISLocalToGlobalMapping,PetscInt*,PetscInt*[],PetscInt*[],PetscInt**[]);
    161: PETSC_EXTERN PetscErrorCode ISLocalToGlobalMappingGetIndices(ISLocalToGlobalMapping,const PetscInt**);
    162: PETSC_EXTERN PetscErrorCode ISLocalToGlobalMappingRestoreIndices(ISLocalToGlobalMapping,const PetscInt**);
    163: PETSC_EXTERN PetscErrorCode ISLocalToGlobalMappingGetBlockIndices(ISLocalToGlobalMapping,const PetscInt**);
    164: PETSC_EXTERN PetscErrorCode ISLocalToGlobalMappingRestoreBlockIndices(ISLocalToGlobalMapping,const PetscInt**);
    165: PETSC_EXTERN PetscErrorCode ISLocalToGlobalMappingConcatenate(MPI_Comm,PetscInt,const ISLocalToGlobalMapping[],ISLocalToGlobalMapping*);
    166: PETSC_EXTERN PetscErrorCode ISLocalToGlobalMappingGetBlockSize(ISLocalToGlobalMapping,PetscInt*);
    167: PETSC_EXTERN PetscErrorCode ISLocalToGlobalMappingSetBlockSize(ISLocalToGlobalMapping,PetscInt);
    168: PETSC_EXTERN PetscErrorCode ISLocalToGlobalMappingDuplicate(ISLocalToGlobalMapping,ISLocalToGlobalMapping*);

    171: /* --------------------------------------------------------------------------*/
    172: /*E
    173:     ISColoringType - determines if the coloring is for the entire parallel grid/graph/matrix
    174:                      or for just the local ghosted portion

    176:     Level: beginner

    178: $   IS_COLORING_GLOBAL - does not include the colors for ghost points, this is used when the function
    179: $                        is called synchronously in parallel. This requires generating a "parallel coloring".
    180: $   IS_COLORING_LOCAL - includes colors for ghost points, this is used when the function can be called
    181: $                         separately on individual processes with the ghost points already filled in. Does not
    182: $                         require a "parallel coloring", rather each process colors its local + ghost part.
    183: $                         Using this can result in much less parallel communication. Currently only works
    184: $                         with DMDA and if you call MatFDColoringSetFunction() with the local function.

    186: .seealso: DMCreateColoring()
    187: E*/
    188: typedef enum {IS_COLORING_GLOBAL,IS_COLORING_LOCAL} ISColoringType;
    189: PETSC_EXTERN const char *const ISColoringTypes[];
    190: typedef unsigned PETSC_IS_COLOR_VALUE_TYPE ISColoringValue;
    191: PETSC_EXTERN PetscErrorCode ISAllGatherColors(MPI_Comm,PetscInt,ISColoringValue*,PetscInt*,ISColoringValue*[]);

    193: PETSC_EXTERN PetscErrorCode ISColoringCreate(MPI_Comm,PetscInt,PetscInt,const ISColoringValue[],PetscCopyMode,ISColoring*);
    194: PETSC_EXTERN PetscErrorCode ISColoringDestroy(ISColoring*);
    195: PETSC_EXTERN PetscErrorCode ISColoringView(ISColoring,PetscViewer);
    196: PETSC_EXTERN PetscErrorCode ISColoringViewFromOptions(ISColoring,PetscObject,const char[]);
    197: PETSC_EXTERN PetscErrorCode ISColoringGetIS(ISColoring,PetscCopyMode,PetscInt*,IS*[]);
    198: PETSC_EXTERN PetscErrorCode ISColoringRestoreIS(ISColoring,PetscCopyMode,IS*[]);
    199: PETSC_EXTERN PetscErrorCode ISColoringReference(ISColoring);
    200: PETSC_EXTERN PetscErrorCode ISColoringSetType(ISColoring,ISColoringType);
    201: PETSC_EXTERN PetscErrorCode ISColoringGetType(ISColoring,ISColoringType*);
    202: PETSC_EXTERN PetscErrorCode ISColoringGetColors(ISColoring,PetscInt*,PetscInt*,const ISColoringValue**);

    204: /* --------------------------------------------------------------------------*/
    205: PETSC_EXTERN PetscErrorCode ISBuildTwoSided(IS,IS,IS*);
    206: PETSC_EXTERN PetscErrorCode ISPartitioningToNumbering(IS,IS*);
    207: PETSC_EXTERN PetscErrorCode ISPartitioningCount(IS,PetscInt,PetscInt[]);

    209: PETSC_EXTERN PetscErrorCode ISCompressIndicesGeneral(PetscInt,PetscInt,PetscInt,PetscInt,const IS[],IS[]);
    210: PETSC_EXTERN PetscErrorCode ISCompressIndicesSorted(PetscInt,PetscInt,PetscInt,const IS[],IS[]);
    211: PETSC_EXTERN PetscErrorCode ISExpandIndicesGeneral(PetscInt,PetscInt,PetscInt,PetscInt,const IS[],IS[]);

    214: struct _n_PetscLayout{
    215:   MPI_Comm               comm;
    216:   PetscInt               n,N;         /* local, global vector size */
    217:   PetscInt               rstart,rend; /* local start, local end + 1 */
    218:   PetscInt               *range;      /* the offset of each processor */
    219:   PetscBool              range_alloc; /* should range be freed in Destroy? */
    220:   PetscInt               bs;          /* number of elements in each block (generally for multi-component
    221:                                        * problems). Defaults to -1 and can be arbitrarily lazy so always use
    222:                                        * PetscAbs(map->bs) when accessing directly and expecting result to be
    223:                                        * positive. Do NOT multiply above numbers by bs */
    224:   PetscInt               refcnt;      /* MPI Vecs obtained with VecDuplicate() and from MatCreateVecs() reuse map of input object */
    225:   ISLocalToGlobalMapping mapping;     /* mapping used in Vec/MatSetValuesLocal() */
    226:   PetscBool              setupcalled; /* Forbid setup more than once */
    227:   PetscInt               oldn,oldN;   /* Checking if setup is allowed */
    228:   PetscInt               oldbs;       /* And again */
    229: };

    231: /*@C
    232:      PetscLayoutFindOwner - Find the owning rank for a global index

    234:     Not Collective

    236:    Input Parameters:
    237: +    map - the layout
    238: -    idx - global index to find the owner of

    240:    Output Parameter:
    241: .    owner - the owning rank

    243:    Level: developer

    245:     Fortran Notes:
    246:       Not available from Fortran

    248: @*/
    249: PETSC_STATIC_INLINE PetscErrorCode PetscLayoutFindOwner(PetscLayout map,PetscInt idx,PetscInt *owner)
    250: {
    252:   PetscMPIInt    lo = 0,hi,t;

    255:   *owner = -1;                  /* GCC erroneously issues warning about possibly uninitialized use when error condition */
    256:   if (!((map->n >= 0) && (map->N >= 0) && (map->range))) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ARG_WRONGSTATE,"PetscLayoutSetUp() must be called first");
    257:   if (idx < 0 || idx > map->N) SETERRQ1(PETSC_COMM_SELF,PETSC_ERR_ARG_OUTOFRANGE,"Index %D is out of range",idx);
    258:   MPI_Comm_size(map->comm,&hi);
    259:   while (hi - lo > 1) {
    260:     t = lo + (hi - lo) / 2;
    261:     if (idx < map->range[t]) hi = t;
    262:     else                     lo = t;
    263:   }
    264:   *owner = lo;
    265:   return(0);
    266: }

    268: /*@C
    269:      PetscLayoutFindOwnerIndex - Find the owning rank and the local index for a global index

    271:     Not Collective

    273:    Input Parameters:
    274: +    map   - the layout
    275: -    idx   - global index to find the owner of

    277:    Output Parameter:
    278: +    owner - the owning rank
    279: -    lidx  - local index used by the owner for idx

    281:    Level: developer

    283:     Fortran Notes:
    284:       Not available from Fortran

    286: @*/
    287: PETSC_STATIC_INLINE PetscErrorCode PetscLayoutFindOwnerIndex(PetscLayout map,PetscInt idx,PetscInt *owner, PetscInt *lidx)
    288: {
    290:   PetscMPIInt    lo = 0,hi,t;

    293:   if (!((map->n >= 0) && (map->N >= 0) && (map->range))) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ARG_WRONGSTATE,"PetscLayoutSetUp() must be called first");
    294:   if (idx < 0 || idx > map->N) SETERRQ1(PETSC_COMM_SELF,PETSC_ERR_ARG_OUTOFRANGE,"Index %D is out of range",idx);
    295:   MPI_Comm_size(map->comm,&hi);
    296:   while (hi - lo > 1) {
    297:     t = lo + (hi - lo) / 2;
    298:     if (idx < map->range[t]) hi = t;
    299:     else                     lo = t;
    300:   }
    301:   if (owner) *owner = lo;
    302:   if (lidx) *lidx  = idx-map->range[lo];
    303:   return(0);
    304: }

    306: PETSC_EXTERN PetscErrorCode PetscLayoutCreate(MPI_Comm,PetscLayout*);
    307: PETSC_EXTERN PetscErrorCode PetscLayoutCreateFromSizes(MPI_Comm,PetscInt,PetscInt,PetscInt,PetscLayout*);
    308: PETSC_EXTERN PetscErrorCode PetscLayoutCreateFromRanges(MPI_Comm,const PetscInt[],PetscCopyMode,PetscInt,PetscLayout*);
    309: PETSC_EXTERN PetscErrorCode PetscLayoutSetUp(PetscLayout);
    310: PETSC_EXTERN PetscErrorCode PetscLayoutDestroy(PetscLayout*);
    311: PETSC_EXTERN PetscErrorCode PetscLayoutDuplicate(PetscLayout,PetscLayout*);
    312: PETSC_EXTERN PetscErrorCode PetscLayoutReference(PetscLayout,PetscLayout*);
    313: PETSC_EXTERN PetscErrorCode PetscLayoutSetLocalSize(PetscLayout,PetscInt);
    314: PETSC_EXTERN PetscErrorCode PetscLayoutGetLocalSize(PetscLayout,PetscInt *);
    315: PETSC_EXTERN PetscErrorCode PetscLayoutSetSize(PetscLayout,PetscInt);
    316: PETSC_EXTERN PetscErrorCode PetscLayoutGetSize(PetscLayout,PetscInt *);
    317: PETSC_EXTERN PetscErrorCode PetscLayoutSetBlockSize(PetscLayout,PetscInt);
    318: PETSC_EXTERN PetscErrorCode PetscLayoutGetBlockSize(PetscLayout,PetscInt*);
    319: PETSC_EXTERN PetscErrorCode PetscLayoutGetRange(PetscLayout,PetscInt *,PetscInt *);
    320: PETSC_EXTERN PetscErrorCode PetscLayoutGetRanges(PetscLayout,const PetscInt *[]);
    321: PETSC_EXTERN PetscErrorCode PetscLayoutCompare(PetscLayout,PetscLayout,PetscBool*);
    322: PETSC_EXTERN PetscErrorCode PetscLayoutSetISLocalToGlobalMapping(PetscLayout,ISLocalToGlobalMapping);
    323: PETSC_EXTERN PetscErrorCode PetscLayoutMapLocal(PetscLayout,PetscInt,const PetscInt[],PetscInt*,PetscInt**,PetscInt**);
    324: PETSC_EXTERN PetscErrorCode PetscSFSetGraphLayout(PetscSF,PetscLayout,PetscInt,const PetscInt*,PetscCopyMode,const PetscInt*);

    326: /* PetscSF support */
    327: PETSC_EXTERN PetscErrorCode PetscSFConvertPartition(PetscSF, PetscSection, IS, ISLocalToGlobalMapping *, PetscSF *);
    328: PETSC_EXTERN PetscErrorCode PetscSFCreateRemoteOffsets(PetscSF, PetscSection, PetscSection, PetscInt **);
    329: PETSC_EXTERN PetscErrorCode PetscSFDistributeSection(PetscSF, PetscSection, PetscInt **, PetscSection);
    330: PETSC_EXTERN PetscErrorCode PetscSFCreateSectionSF(PetscSF, PetscSection, PetscInt [], PetscSection, PetscSF *);

    332: #endif