Actual source code: petscis.h

petsc-master 2019-11-16
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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: /*E
 54:     ISInfo - Info that may either be computed or set as known for an index set

 56:     Level: beginner

 58:    Any additions/changes here MUST also be made in include/petsc/finclude/petscis.h
 59:    Any additions/changes here must also be made in src/vec/vec/interface/dlregisvec.c in ISInfos[]

 61:    Developer Notes:
 62:     Entries that are negative need not be called collectively by all processes.

 64: .seealso: ISSetInfo()
 65: E*/
 66: typedef enum {IS_INFO_MIN = -1,
 67:               IS_SORTED = 0,
 68:               IS_UNIQUE = 1,
 69:               IS_PERMUTATION = 2,
 70:               IS_INTERVAL = 3,
 71:               IS_IDENTITY = 4,
 72:               IS_INFO_MAX = 5} ISInfo;

 74: typedef enum {IS_LOCAL, IS_GLOBAL} ISInfoType;

 76: PETSC_EXTERN PetscErrorCode ISSetInfo(IS,ISInfo,ISInfoType,PetscBool,PetscBool);
 77: PETSC_EXTERN PetscErrorCode ISGetInfo(IS,ISInfo,ISInfoType,PetscBool,PetscBool*);
 78: PETSC_EXTERN PetscErrorCode ISClearInfoCache(IS,PetscBool);
 79: PETSC_EXTERN PetscErrorCode ISGetIndices(IS,const PetscInt *[]);
 80: PETSC_EXTERN PetscErrorCode ISRestoreIndices(IS,const PetscInt *[]);
 81: PETSC_EXTERN PetscErrorCode ISGetTotalIndices(IS,const PetscInt *[]);
 82: PETSC_EXTERN PetscErrorCode ISRestoreTotalIndices(IS,const PetscInt *[]);
 83: PETSC_EXTERN PetscErrorCode ISGetNonlocalIndices(IS,const PetscInt *[]);
 84: PETSC_EXTERN PetscErrorCode ISRestoreNonlocalIndices(IS,const PetscInt *[]);
 85: PETSC_EXTERN PetscErrorCode ISGetNonlocalIS(IS, IS *is);
 86: PETSC_EXTERN PetscErrorCode ISRestoreNonlocalIS(IS, IS *is);
 87: PETSC_EXTERN PetscErrorCode ISGetSize(IS,PetscInt *);
 88: PETSC_EXTERN PetscErrorCode ISGetLocalSize(IS,PetscInt *);
 89: PETSC_EXTERN PetscErrorCode ISInvertPermutation(IS,PetscInt,IS*);
 90: PETSC_EXTERN PetscErrorCode ISView(IS,PetscViewer);
 91: PETSC_EXTERN PetscErrorCode ISViewFromOptions(IS,PetscObject,const char[]);
 92: PETSC_EXTERN PetscErrorCode ISLoad(IS,PetscViewer);
 93: PETSC_EXTERN PetscErrorCode ISEqual(IS,IS,PetscBool  *);
 94: PETSC_EXTERN PetscErrorCode ISEqualUnsorted(IS,IS,PetscBool *);
 95: PETSC_EXTERN PetscErrorCode ISSort(IS);
 96: PETSC_EXTERN PetscErrorCode ISSortRemoveDups(IS);
 97: PETSC_EXTERN PetscErrorCode ISSorted(IS,PetscBool  *);
 98: PETSC_EXTERN PetscErrorCode ISDifference(IS,IS,IS*);
 99: PETSC_EXTERN PetscErrorCode ISSum(IS,IS,IS*);
100: PETSC_EXTERN PetscErrorCode ISExpand(IS,IS,IS*);
101: PETSC_EXTERN PetscErrorCode ISIntersect(IS,IS,IS*);
102: PETSC_EXTERN PetscErrorCode ISGetMinMax(IS,PetscInt*,PetscInt*);

104: PETSC_EXTERN PetscErrorCode ISLocate(IS,PetscInt,PetscInt*);
105: PETSC_EXTERN PetscErrorCode ISGetPointRange(IS,PetscInt*,PetscInt*,const PetscInt**);
106: PETSC_EXTERN PetscErrorCode ISRestorePointRange(IS,PetscInt*,PetscInt*,const PetscInt**);
107: PETSC_EXTERN PetscErrorCode ISGetPointSubrange(IS,PetscInt,PetscInt,const PetscInt*);

109: PETSC_EXTERN PetscErrorCode ISBlockGetIndices(IS,const PetscInt *[]);
110: PETSC_EXTERN PetscErrorCode ISBlockRestoreIndices(IS,const PetscInt *[]);
111: PETSC_EXTERN PetscErrorCode ISBlockGetLocalSize(IS,PetscInt *);
112: PETSC_EXTERN PetscErrorCode ISBlockGetSize(IS,PetscInt *);
113: PETSC_EXTERN PetscErrorCode ISGetBlockSize(IS,PetscInt*);
114: PETSC_EXTERN PetscErrorCode ISSetBlockSize(IS,PetscInt);

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

118: PETSC_EXTERN PetscErrorCode ISToGeneral(IS);

120: PETSC_EXTERN PetscErrorCode ISDuplicate(IS,IS*);
121: PETSC_EXTERN PetscErrorCode ISCopy(IS,IS);
122: PETSC_EXTERN PetscErrorCode ISAllGather(IS,IS*);
123: PETSC_EXTERN PetscErrorCode ISComplement(IS,PetscInt,PetscInt,IS*);
124: PETSC_EXTERN PetscErrorCode ISConcatenate(MPI_Comm,PetscInt,const IS[],IS*);
125: PETSC_EXTERN PetscErrorCode ISListToPair(MPI_Comm,PetscInt, IS[],IS*,IS*);
126: PETSC_EXTERN PetscErrorCode ISPairToList(IS,IS,PetscInt*, IS *[]);
127: PETSC_EXTERN PetscErrorCode ISEmbed(IS,IS,PetscBool,IS*);
128: PETSC_EXTERN PetscErrorCode ISSortPermutation(IS,PetscBool,IS*);
129: PETSC_EXTERN PetscErrorCode ISOnComm(IS,MPI_Comm,PetscCopyMode,IS*);
130: PETSC_EXTERN PetscErrorCode ISRenumber(IS,IS,PetscInt*,IS*);
131: PETSC_EXTERN PetscErrorCode ISCreateSubIS(IS,IS,IS*);

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

135: /* --------------------------------------------------------------------------*/
136: PETSC_EXTERN PetscClassId IS_LTOGM_CLASSID;

138: /*E
139:     ISGlobalToLocalMappingMode - Indicates mapping behavior if global indices are missing

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

144:    Level: beginner

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

148: E*/
149: typedef enum {IS_GTOLM_MASK,IS_GTOLM_DROP} ISGlobalToLocalMappingMode;

151: /*J
152:     ISLocalToGlobalMappingType - String with the name of a mapping method

154:    Level: beginner

156: .seealso: ISLocalToGlobalMappingSetType(), ISLocalToGlobalSetFromOptions()
157: J*/
158: typedef const char* ISLocalToGlobalMappingType;
159: #define ISLOCALTOGLOBALMAPPINGBASIC "basic"
160: #define ISLOCALTOGLOBALMAPPINGHASH  "hash"

162: PETSC_EXTERN PetscErrorCode ISLocalToGlobalMappingSetType(ISLocalToGlobalMapping,ISLocalToGlobalMappingType);
163: PETSC_EXTERN PetscErrorCode ISLocalToGlobalMappingRegister(const char[],PetscErrorCode (*)(ISLocalToGlobalMapping));
164: PETSC_EXTERN PetscErrorCode ISLocalToGlobalMappingRegisterAll(void);
165: PETSC_EXTERN PetscErrorCode ISLocalToGlobalMappingCreate(MPI_Comm,PetscInt,PetscInt,const PetscInt[],PetscCopyMode,ISLocalToGlobalMapping*);
166: PETSC_EXTERN PetscErrorCode ISLocalToGlobalMappingCreateIS(IS,ISLocalToGlobalMapping *);
167: PETSC_EXTERN PetscErrorCode ISLocalToGlobalMappingCreateSF(PetscSF,PetscInt,ISLocalToGlobalMapping*);
168: PETSC_EXTERN PetscErrorCode ISLocalToGlobalMappingSetFromOptions(ISLocalToGlobalMapping);
169: PETSC_EXTERN PetscErrorCode ISLocalToGlobalMappingSetUp(ISLocalToGlobalMapping);
170: PETSC_EXTERN PetscErrorCode ISLocalToGlobalMappingView(ISLocalToGlobalMapping,PetscViewer);
171: PETSC_EXTERN PetscErrorCode ISLocalToGlobalMappingViewFromOptions(ISLocalToGlobalMapping,PetscObject,const char[]);

173: PETSC_EXTERN PetscErrorCode ISLocalToGlobalMappingDestroy(ISLocalToGlobalMapping*);
174: PETSC_EXTERN PetscErrorCode ISLocalToGlobalMappingApply(ISLocalToGlobalMapping,PetscInt,const PetscInt[],PetscInt[]);
175: PETSC_EXTERN PetscErrorCode ISLocalToGlobalMappingApplyBlock(ISLocalToGlobalMapping,PetscInt,const PetscInt[],PetscInt[]);
176: PETSC_EXTERN PetscErrorCode ISLocalToGlobalMappingApplyIS(ISLocalToGlobalMapping,IS,IS*);
177: PETSC_EXTERN PetscErrorCode ISGlobalToLocalMappingApply(ISLocalToGlobalMapping,ISGlobalToLocalMappingMode,PetscInt,const PetscInt[],PetscInt*,PetscInt[]);
178: PETSC_EXTERN PetscErrorCode ISGlobalToLocalMappingApplyBlock(ISLocalToGlobalMapping,ISGlobalToLocalMappingMode,PetscInt,const PetscInt[],PetscInt*,PetscInt[]);
179: PETSC_EXTERN PetscErrorCode ISGlobalToLocalMappingApplyIS(ISLocalToGlobalMapping,ISGlobalToLocalMappingMode,IS,IS*);
180: PETSC_EXTERN PetscErrorCode ISLocalToGlobalMappingGetSize(ISLocalToGlobalMapping,PetscInt*);
181: PETSC_EXTERN PetscErrorCode ISLocalToGlobalMappingGetNodeInfo(ISLocalToGlobalMapping,PetscInt*,PetscInt*[],PetscInt**[]);
182: PETSC_EXTERN PetscErrorCode ISLocalToGlobalMappingRestoreNodeInfo(ISLocalToGlobalMapping,PetscInt*,PetscInt*[],PetscInt**[]);
183: PETSC_EXTERN PetscErrorCode ISLocalToGlobalMappingGetInfo(ISLocalToGlobalMapping,PetscInt*,PetscInt*[],PetscInt*[],PetscInt**[]);
184: PETSC_EXTERN PetscErrorCode ISLocalToGlobalMappingRestoreInfo(ISLocalToGlobalMapping,PetscInt*,PetscInt*[],PetscInt*[],PetscInt**[]);
185: PETSC_EXTERN PetscErrorCode ISLocalToGlobalMappingGetBlockInfo(ISLocalToGlobalMapping,PetscInt*,PetscInt*[],PetscInt*[],PetscInt**[]);
186: PETSC_EXTERN PetscErrorCode ISLocalToGlobalMappingRestoreBlockInfo(ISLocalToGlobalMapping,PetscInt*,PetscInt*[],PetscInt*[],PetscInt**[]);
187: PETSC_EXTERN PetscErrorCode ISLocalToGlobalMappingGetIndices(ISLocalToGlobalMapping,const PetscInt**);
188: PETSC_EXTERN PetscErrorCode ISLocalToGlobalMappingRestoreIndices(ISLocalToGlobalMapping,const PetscInt**);
189: PETSC_EXTERN PetscErrorCode ISLocalToGlobalMappingGetBlockIndices(ISLocalToGlobalMapping,const PetscInt**);
190: PETSC_EXTERN PetscErrorCode ISLocalToGlobalMappingRestoreBlockIndices(ISLocalToGlobalMapping,const PetscInt**);
191: PETSC_EXTERN PetscErrorCode ISLocalToGlobalMappingConcatenate(MPI_Comm,PetscInt,const ISLocalToGlobalMapping[],ISLocalToGlobalMapping*);
192: PETSC_EXTERN PetscErrorCode ISLocalToGlobalMappingGetBlockSize(ISLocalToGlobalMapping,PetscInt*);
193: PETSC_EXTERN PetscErrorCode ISLocalToGlobalMappingSetBlockSize(ISLocalToGlobalMapping,PetscInt);
194: PETSC_EXTERN PetscErrorCode ISLocalToGlobalMappingDuplicate(ISLocalToGlobalMapping,ISLocalToGlobalMapping*);


197: /* --------------------------------------------------------------------------*/
198: /*E
199:     ISColoringType - determines if the coloring is for the entire parallel grid/graph/matrix
200:                      or for just the local ghosted portion

202:     Level: beginner

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

212: .seealso: DMCreateColoring()
213: E*/
214: typedef enum {IS_COLORING_GLOBAL,IS_COLORING_LOCAL} ISColoringType;
215: PETSC_EXTERN const char *const ISColoringTypes[];
216: typedef unsigned PETSC_IS_COLOR_VALUE_TYPE ISColoringValue;
217: PETSC_EXTERN PetscErrorCode ISAllGatherColors(MPI_Comm,PetscInt,ISColoringValue*,PetscInt*,ISColoringValue*[]);

219: PETSC_EXTERN PetscErrorCode ISColoringCreate(MPI_Comm,PetscInt,PetscInt,const ISColoringValue[],PetscCopyMode,ISColoring*);
220: PETSC_EXTERN PetscErrorCode ISColoringDestroy(ISColoring*);
221: PETSC_EXTERN PetscErrorCode ISColoringView(ISColoring,PetscViewer);
222: PETSC_EXTERN PetscErrorCode ISColoringViewFromOptions(ISColoring,PetscObject,const char[]);
223: PETSC_EXTERN PetscErrorCode ISColoringGetIS(ISColoring,PetscCopyMode,PetscInt*,IS*[]);
224: PETSC_EXTERN PetscErrorCode ISColoringRestoreIS(ISColoring,PetscCopyMode,IS*[]);
225: PETSC_EXTERN PetscErrorCode ISColoringReference(ISColoring);
226: PETSC_EXTERN PetscErrorCode ISColoringSetType(ISColoring,ISColoringType);
227: PETSC_EXTERN PetscErrorCode ISColoringGetType(ISColoring,ISColoringType*);
228: PETSC_EXTERN PetscErrorCode ISColoringGetColors(ISColoring,PetscInt*,PetscInt*,const ISColoringValue**);

230: /* --------------------------------------------------------------------------*/
231: PETSC_EXTERN PetscErrorCode ISBuildTwoSided(IS,IS,IS*);
232: PETSC_EXTERN PetscErrorCode ISPartitioningToNumbering(IS,IS*);
233: PETSC_EXTERN PetscErrorCode ISPartitioningCount(IS,PetscInt,PetscInt[]);

235: PETSC_EXTERN PetscErrorCode ISCompressIndicesGeneral(PetscInt,PetscInt,PetscInt,PetscInt,const IS[],IS[]);
236: PETSC_EXTERN PetscErrorCode ISCompressIndicesSorted(PetscInt,PetscInt,PetscInt,const IS[],IS[]);
237: PETSC_EXTERN PetscErrorCode ISExpandIndicesGeneral(PetscInt,PetscInt,PetscInt,PetscInt,const IS[],IS[]);


240: struct _n_PetscLayout{
241:   MPI_Comm               comm;
242:   PetscInt               n,N;         /* local, global vector size */
243:   PetscInt               rstart,rend; /* local start, local end + 1 */
244:   PetscInt               *range;      /* the offset of each processor */
245:   PetscBool              range_alloc; /* should range be freed in Destroy? */
246:   PetscInt               bs;          /* number of elements in each block (generally for multi-component
247:                                        * problems). Defaults to -1 and can be arbitrarily lazy so always use
248:                                        * PetscAbs(map->bs) when accessing directly and expecting result to be
249:                                        * positive. Do NOT multiply above numbers by bs */
250:   PetscInt               refcnt;      /* MPI Vecs obtained with VecDuplicate() and from MatCreateVecs() reuse map of input object */
251:   ISLocalToGlobalMapping mapping;     /* mapping used in Vec/MatSetValuesLocal() */
252:   PetscBool              setupcalled; /* Forbid setup more than once */
253:   PetscInt               oldn,oldN;   /* Checking if setup is allowed */
254:   PetscInt               oldbs;       /* And again */
255: };

257: /*@C
258:      PetscLayoutFindOwner - Find the owning rank for a global index

260:     Not Collective

262:    Input Parameters:
263: +    map - the layout
264: -    idx - global index to find the owner of

266:    Output Parameter:
267: .    owner - the owning rank

269:    Level: developer

271:     Fortran Notes:
272:       Not available from Fortran

274: @*/
275: PETSC_STATIC_INLINE PetscErrorCode PetscLayoutFindOwner(PetscLayout map,PetscInt idx,PetscMPIInt *owner)
276: {
278:   PetscMPIInt    lo = 0,hi,t;

281:   *owner = -1;                  /* GCC erroneously issues warning about possibly uninitialized use when error condition */
282:   if (!((map->n >= 0) && (map->N >= 0) && (map->range))) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ARG_WRONGSTATE,"PetscLayoutSetUp() must be called first");
283:   if (idx < 0 || idx > map->N) SETERRQ1(PETSC_COMM_SELF,PETSC_ERR_ARG_OUTOFRANGE,"Index %D is out of range",idx);
284:   MPI_Comm_size(map->comm,&hi);
285:   while (hi - lo > 1) {
286:     t = lo + (hi - lo) / 2;
287:     if (idx < map->range[t]) hi = t;
288:     else                     lo = t;
289:   }
290:   *owner = lo;
291:   return(0);
292: }

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

297:     Not Collective

299:    Input Parameters:
300: +    map   - the layout
301: -    idx   - global index to find the owner of

303:    Output Parameter:
304: +    owner - the owning rank
305: -    lidx  - local index used by the owner for idx

307:    Level: developer

309:     Fortran Notes:
310:       Not available from Fortran

312: @*/
313: PETSC_STATIC_INLINE PetscErrorCode PetscLayoutFindOwnerIndex(PetscLayout map,PetscInt idx,PetscMPIInt *owner,PetscInt *lidx)
314: {
316:   PetscMPIInt    lo = 0,hi,t;

319:   if (!((map->n >= 0) && (map->N >= 0) && (map->range))) SETERRQ(PETSC_COMM_SELF,PETSC_ERR_ARG_WRONGSTATE,"PetscLayoutSetUp() must be called first");
320:   if (idx < 0 || idx > map->N) SETERRQ1(PETSC_COMM_SELF,PETSC_ERR_ARG_OUTOFRANGE,"Index %D is out of range",idx);
321:   MPI_Comm_size(map->comm,&hi);
322:   while (hi - lo > 1) {
323:     t = lo + (hi - lo) / 2;
324:     if (idx < map->range[t]) hi = t;
325:     else                     lo = t;
326:   }
327:   if (owner) *owner = lo;
328:   if (lidx) *lidx  = idx-map->range[lo];
329:   return(0);
330: }

332: PETSC_EXTERN PetscErrorCode PetscLayoutCreate(MPI_Comm,PetscLayout*);
333: PETSC_EXTERN PetscErrorCode PetscLayoutCreateFromSizes(MPI_Comm,PetscInt,PetscInt,PetscInt,PetscLayout*);
334: PETSC_EXTERN PetscErrorCode PetscLayoutCreateFromRanges(MPI_Comm,const PetscInt[],PetscCopyMode,PetscInt,PetscLayout*);
335: PETSC_EXTERN PetscErrorCode PetscLayoutSetUp(PetscLayout);
336: PETSC_EXTERN PetscErrorCode PetscLayoutDestroy(PetscLayout*);
337: PETSC_EXTERN PetscErrorCode PetscLayoutDuplicate(PetscLayout,PetscLayout*);
338: PETSC_EXTERN PetscErrorCode PetscLayoutReference(PetscLayout,PetscLayout*);
339: PETSC_EXTERN PetscErrorCode PetscLayoutSetLocalSize(PetscLayout,PetscInt);
340: PETSC_EXTERN PetscErrorCode PetscLayoutGetLocalSize(PetscLayout,PetscInt *);
341: PETSC_EXTERN PetscErrorCode PetscLayoutSetSize(PetscLayout,PetscInt);
342: PETSC_EXTERN PetscErrorCode PetscLayoutGetSize(PetscLayout,PetscInt *);
343: PETSC_EXTERN PetscErrorCode PetscLayoutSetBlockSize(PetscLayout,PetscInt);
344: PETSC_EXTERN PetscErrorCode PetscLayoutGetBlockSize(PetscLayout,PetscInt*);
345: PETSC_EXTERN PetscErrorCode PetscLayoutGetRange(PetscLayout,PetscInt *,PetscInt *);
346: PETSC_EXTERN PetscErrorCode PetscLayoutGetRanges(PetscLayout,const PetscInt *[]);
347: PETSC_EXTERN PetscErrorCode PetscLayoutCompare(PetscLayout,PetscLayout,PetscBool*);
348: PETSC_EXTERN PetscErrorCode PetscLayoutSetISLocalToGlobalMapping(PetscLayout,ISLocalToGlobalMapping);
349: PETSC_EXTERN PetscErrorCode PetscLayoutMapLocal(PetscLayout,PetscInt,const PetscInt[],PetscInt*,PetscInt**,PetscInt**);
350: PETSC_EXTERN PetscErrorCode PetscSFSetGraphLayout(PetscSF,PetscLayout,PetscInt,const PetscInt*,PetscCopyMode,const PetscInt*);

352: PETSC_EXTERN PetscErrorCode PetscParallelSortInt(PetscLayout, PetscLayout, PetscInt*, PetscInt*);

354: PETSC_EXTERN PetscErrorCode ISGetLayout(IS, PetscLayout *);

356: /* PetscSF support */
357: PETSC_EXTERN PetscErrorCode PetscSFConvertPartition(PetscSF, PetscSection, IS, ISLocalToGlobalMapping *, PetscSF *);
358: PETSC_EXTERN PetscErrorCode PetscSFCreateRemoteOffsets(PetscSF, PetscSection, PetscSection, PetscInt **);
359: PETSC_EXTERN PetscErrorCode PetscSFDistributeSection(PetscSF, PetscSection, PetscInt **, PetscSection);
360: PETSC_EXTERN PetscErrorCode PetscSFCreateSectionSF(PetscSF, PetscSection, PetscInt [], PetscSection, PetscSF *);

362: #endif