Actual source code: petscis.h

  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: #ifndef PETSCIS_H
  6: #define PETSCIS_H

  8: #include <petscsys.h>
  9: #include <petscsftypes.h>
 10: #include <petscsectiontypes.h>
 11: #include <petscistypes.h>

 13: /* SUBMANSEC = IS */

 15: #define IS_FILE_CLASSID 1211218
 16: PETSC_EXTERN PetscClassId IS_CLASSID;

 18: PETSC_EXTERN PetscErrorCode ISInitializePackage(void);

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

 23:    Level: beginner

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

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

 39: PETSC_EXTERN PetscErrorCode ISDestroy(IS *);
 40: PETSC_EXTERN PetscErrorCode ISSetPermutation(IS);
 41: PETSC_EXTERN PetscErrorCode ISPermutation(IS, PetscBool *);
 42: PETSC_EXTERN PetscErrorCode ISSetIdentity(IS);
 43: PETSC_EXTERN PetscErrorCode ISIdentity(IS, PetscBool *);
 44: PETSC_EXTERN PetscErrorCode ISContiguousLocal(IS, PetscInt, PetscInt, PetscInt *, PetscBool *);

 46: /*E
 47:     ISInfo - Info that may either be computed or set as known for an index set

 49:     Level: beginner

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

 54:    Any additions/changes here MUST also be made in include/petsc/finclude/petscis.h

 56:    Any additions/changes here must also be made in src/vec/vec/interface/dlregisvec.c in ISInfos[]

 58: .seealso: `ISSetInfo()`
 59: E*/
 60: typedef enum {
 61:   IS_INFO_MIN    = -1,
 62:   IS_SORTED      = 0,
 63:   IS_UNIQUE      = 1,
 64:   IS_PERMUTATION = 2,
 65:   IS_INTERVAL    = 3,
 66:   IS_IDENTITY    = 4,
 67:   IS_INFO_MAX    = 5
 68: } ISInfo;

 70: typedef enum {
 71:   IS_LOCAL,
 72:   IS_GLOBAL
 73: } ISInfoType;

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

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

108: PETSC_EXTERN PetscErrorCode ISGetBlockSize(IS, PetscInt *);
109: PETSC_EXTERN PetscErrorCode ISSetBlockSize(IS, PetscInt);

111: PETSC_EXTERN PetscErrorCode ISToGeneral(IS);

113: PETSC_EXTERN PetscErrorCode ISDuplicate(IS, IS *);
114: PETSC_EXTERN PetscErrorCode ISCopy(IS, IS);
115: PETSC_EXTERN PetscErrorCode ISShift(IS, PetscInt, IS);
116: PETSC_EXTERN PetscErrorCode ISAllGather(IS, IS *);
117: PETSC_EXTERN PetscErrorCode ISComplement(IS, PetscInt, PetscInt, IS *);
118: PETSC_EXTERN PetscErrorCode ISConcatenate(MPI_Comm, PetscInt, const IS[], IS *);
119: PETSC_EXTERN PetscErrorCode ISListToPair(MPI_Comm, PetscInt, IS[], IS *, IS *);
120: PETSC_EXTERN PetscErrorCode ISPairToList(IS, IS, PetscInt *, IS *[]);
121: PETSC_EXTERN PetscErrorCode ISEmbed(IS, IS, PetscBool, IS *);
122: PETSC_EXTERN PetscErrorCode ISSortPermutation(IS, PetscBool, IS *);
123: PETSC_EXTERN PetscErrorCode ISOnComm(IS, MPI_Comm, PetscCopyMode, IS *);
124: PETSC_EXTERN PetscErrorCode ISRenumber(IS, IS, PetscInt *, IS *);
125: PETSC_EXTERN PetscErrorCode ISCreateSubIS(IS, IS, IS *);

127: /* ISGENERAL specific */
128: PETSC_EXTERN PetscErrorCode ISCreateGeneral(MPI_Comm, PetscInt, const PetscInt[], PetscCopyMode, IS *);
129: PETSC_EXTERN PetscErrorCode ISGeneralSetIndices(IS, PetscInt, const PetscInt[], PetscCopyMode);
130: PETSC_EXTERN PetscErrorCode ISGeneralSetIndicesFromMask(IS, PetscInt, PetscInt, const PetscBool[]);
131: PETSC_EXTERN PetscErrorCode ISGeneralFilter(IS, PetscInt, PetscInt);

133: /* ISBLOCK specific */
134: PETSC_EXTERN PetscErrorCode ISCreateBlock(MPI_Comm, PetscInt, PetscInt, const PetscInt[], PetscCopyMode, IS *);
135: PETSC_EXTERN PetscErrorCode ISBlockSetIndices(IS, PetscInt, PetscInt, const PetscInt[], PetscCopyMode);
136: PETSC_EXTERN PetscErrorCode ISBlockGetIndices(IS, const PetscInt *[]);
137: PETSC_EXTERN PetscErrorCode ISBlockRestoreIndices(IS, const PetscInt *[]);
138: PETSC_EXTERN PetscErrorCode ISBlockGetLocalSize(IS, PetscInt *);
139: PETSC_EXTERN PetscErrorCode ISBlockGetSize(IS, PetscInt *);

141: /* ISSTRIDE specific */
142: PETSC_EXTERN PetscErrorCode ISCreateStride(MPI_Comm, PetscInt, PetscInt, PetscInt, IS *);
143: PETSC_EXTERN PetscErrorCode ISStrideSetStride(IS, PetscInt, PetscInt, PetscInt);
144: PETSC_EXTERN PetscErrorCode ISStrideGetInfo(IS, PetscInt *, PetscInt *);

146: /* --------------------------------------------------------------------------*/
147: PETSC_EXTERN PetscClassId IS_LTOGM_CLASSID;

149: /*E
150:     ISGlobalToLocalMappingMode - Indicates mapping behavior if global indices are missing

152:    `IS_GTOLM_MASK` - missing global indices are masked by mapping them to a local index of -1
153:    `IS_GTOLM_DROP` - missing global indices are dropped

155:    Level: beginner

157: .seealso: `ISGlobalToLocalMappingApplyBlock()`, `ISGlobalToLocalMappingApply()`

159: E*/
160: typedef enum {
161:   IS_GTOLM_MASK,
162:   IS_GTOLM_DROP
163: } ISGlobalToLocalMappingMode;

165: /*J
166:     ISLocalToGlobalMappingType - String with the name of a mapping method

168:    Level: beginner

170: .seealso: `ISLocalToGlobalMappingSetType()`, `ISLocalToGlobalSetFromOptions()`
171: J*/
172: typedef const char *ISLocalToGlobalMappingType;
173: #define ISLOCALTOGLOBALMAPPINGBASIC "basic"
174: #define ISLOCALTOGLOBALMAPPINGHASH  "hash"

176: PETSC_EXTERN PetscErrorCode ISLocalToGlobalMappingSetType(ISLocalToGlobalMapping, ISLocalToGlobalMappingType);
177: PETSC_EXTERN PetscErrorCode ISLocalToGlobalMappingGetType(ISLocalToGlobalMapping, ISLocalToGlobalMappingType *);
178: PETSC_EXTERN PetscErrorCode ISLocalToGlobalMappingRegister(const char[], PetscErrorCode (*)(ISLocalToGlobalMapping));
179: PETSC_EXTERN PetscErrorCode ISLocalToGlobalMappingRegisterAll(void);
180: PETSC_EXTERN PetscErrorCode ISLocalToGlobalMappingCreate(MPI_Comm, PetscInt, PetscInt, const PetscInt[], PetscCopyMode, ISLocalToGlobalMapping *);
181: PETSC_EXTERN PetscErrorCode ISLocalToGlobalMappingCreateIS(IS, ISLocalToGlobalMapping *);
182: PETSC_EXTERN PetscErrorCode ISLocalToGlobalMappingCreateSF(PetscSF, PetscInt, ISLocalToGlobalMapping *);
183: PETSC_EXTERN PetscErrorCode ISLocalToGlobalMappingSetFromOptions(ISLocalToGlobalMapping);
184: PETSC_EXTERN PetscErrorCode ISLocalToGlobalMappingSetUp(ISLocalToGlobalMapping);
185: PETSC_EXTERN PetscErrorCode ISLocalToGlobalMappingView(ISLocalToGlobalMapping, PetscViewer);
186: PETSC_EXTERN PetscErrorCode ISLocalToGlobalMappingViewFromOptions(ISLocalToGlobalMapping, PetscObject, const char[]);

188: PETSC_EXTERN PetscErrorCode ISLocalToGlobalMappingDestroy(ISLocalToGlobalMapping *);
189: PETSC_EXTERN PetscErrorCode ISLocalToGlobalMappingApply(ISLocalToGlobalMapping, PetscInt, const PetscInt[], PetscInt[]);
190: PETSC_EXTERN PetscErrorCode ISLocalToGlobalMappingApplyBlock(ISLocalToGlobalMapping, PetscInt, const PetscInt[], PetscInt[]);
191: PETSC_EXTERN PetscErrorCode ISLocalToGlobalMappingApplyIS(ISLocalToGlobalMapping, IS, IS *);
192: PETSC_EXTERN PetscErrorCode ISGlobalToLocalMappingApply(ISLocalToGlobalMapping, ISGlobalToLocalMappingMode, PetscInt, const PetscInt[], PetscInt *, PetscInt[]);
193: PETSC_EXTERN PetscErrorCode ISGlobalToLocalMappingApplyBlock(ISLocalToGlobalMapping, ISGlobalToLocalMappingMode, PetscInt, const PetscInt[], PetscInt *, PetscInt[]);
194: PETSC_EXTERN PetscErrorCode ISGlobalToLocalMappingApplyIS(ISLocalToGlobalMapping, ISGlobalToLocalMappingMode, IS, IS *);
195: PETSC_EXTERN PetscErrorCode ISLocalToGlobalMappingGetSize(ISLocalToGlobalMapping, PetscInt *);
196: PETSC_EXTERN PetscErrorCode ISLocalToGlobalMappingGetNodeInfo(ISLocalToGlobalMapping, PetscInt *, PetscInt *[], PetscInt **[]);
197: PETSC_EXTERN PetscErrorCode ISLocalToGlobalMappingRestoreNodeInfo(ISLocalToGlobalMapping, PetscInt *, PetscInt *[], PetscInt **[]);
198: PETSC_EXTERN PetscErrorCode ISLocalToGlobalMappingGetInfo(ISLocalToGlobalMapping, PetscInt *, PetscInt *[], PetscInt *[], PetscInt **[]);
199: PETSC_EXTERN PetscErrorCode ISLocalToGlobalMappingRestoreInfo(ISLocalToGlobalMapping, PetscInt *, PetscInt *[], PetscInt *[], PetscInt **[]);
200: PETSC_EXTERN PetscErrorCode ISLocalToGlobalMappingGetBlockInfo(ISLocalToGlobalMapping, PetscInt *, PetscInt *[], PetscInt *[], PetscInt **[]);
201: PETSC_EXTERN PetscErrorCode ISLocalToGlobalMappingRestoreBlockInfo(ISLocalToGlobalMapping, PetscInt *, PetscInt *[], PetscInt *[], PetscInt **[]);
202: PETSC_EXTERN PetscErrorCode ISLocalToGlobalMappingGetIndices(ISLocalToGlobalMapping, const PetscInt **);
203: PETSC_EXTERN PetscErrorCode ISLocalToGlobalMappingRestoreIndices(ISLocalToGlobalMapping, const PetscInt **);
204: PETSC_EXTERN PetscErrorCode ISLocalToGlobalMappingGetBlockIndices(ISLocalToGlobalMapping, const PetscInt **);
205: PETSC_EXTERN PetscErrorCode ISLocalToGlobalMappingRestoreBlockIndices(ISLocalToGlobalMapping, const PetscInt **);
206: PETSC_EXTERN PetscErrorCode ISLocalToGlobalMappingConcatenate(MPI_Comm, PetscInt, const ISLocalToGlobalMapping[], ISLocalToGlobalMapping *);
207: PETSC_EXTERN PetscErrorCode ISLocalToGlobalMappingGetBlockSize(ISLocalToGlobalMapping, PetscInt *);
208: PETSC_EXTERN PetscErrorCode ISLocalToGlobalMappingSetBlockSize(ISLocalToGlobalMapping, PetscInt);
209: PETSC_EXTERN PetscErrorCode ISLocalToGlobalMappingDuplicate(ISLocalToGlobalMapping, ISLocalToGlobalMapping *);

211: /* --------------------------------------------------------------------------*/
212: /*E
213:     ISColoringType - determines if the coloring is for the entire parallel grid/graph/matrix
214:                      or for just the local ghosted portion

216:     Level: beginner

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

226: .seealso: `DMCreateColoring()`
227: E*/
228: typedef enum {
229:   IS_COLORING_GLOBAL,
230:   IS_COLORING_LOCAL
231: } ISColoringType;
232: PETSC_EXTERN const char *const                ISColoringTypes[];
233: typedef unsigned PETSC_IS_COLORING_VALUE_TYPE ISColoringValue;
234: #define IS_COLORING_MAX     PETSC_IS_COLORING_MAX
235: #define MPIU_COLORING_VALUE PETSC_MPIU_IS_COLORING_VALUE_TYPE
236: PETSC_EXTERN PetscErrorCode ISAllGatherColors(MPI_Comm, PetscInt, ISColoringValue *, PetscInt *, ISColoringValue *[]);

238: PETSC_EXTERN PetscErrorCode ISColoringCreate(MPI_Comm, PetscInt, PetscInt, const ISColoringValue[], PetscCopyMode, ISColoring *);
239: PETSC_EXTERN PetscErrorCode ISColoringDestroy(ISColoring *);
240: PETSC_EXTERN PetscErrorCode ISColoringView(ISColoring, PetscViewer);
241: PETSC_EXTERN PetscErrorCode ISColoringViewFromOptions(ISColoring, PetscObject, const char[]);
242: PETSC_EXTERN PetscErrorCode ISColoringGetIS(ISColoring, PetscCopyMode, PetscInt *, IS *[]);
243: PETSC_EXTERN PetscErrorCode ISColoringRestoreIS(ISColoring, PetscCopyMode, IS *[]);
244: PETSC_EXTERN PetscErrorCode ISColoringReference(ISColoring);
245: PETSC_EXTERN PetscErrorCode ISColoringSetType(ISColoring, ISColoringType);
246: PETSC_EXTERN PetscErrorCode ISColoringGetType(ISColoring, ISColoringType *);
247: PETSC_EXTERN PetscErrorCode ISColoringGetColors(ISColoring, PetscInt *, PetscInt *, const ISColoringValue **);

249: /* --------------------------------------------------------------------------*/
250: PETSC_EXTERN PetscErrorCode ISBuildTwoSided(IS, IS, IS *);
251: PETSC_EXTERN PetscErrorCode ISPartitioningToNumbering(IS, IS *);
252: PETSC_EXTERN PetscErrorCode ISPartitioningCount(IS, PetscInt, PetscInt[]);

254: PETSC_EXTERN PetscErrorCode ISCompressIndicesGeneral(PetscInt, PetscInt, PetscInt, PetscInt, const IS[], IS[]);
255: PETSC_EXTERN PetscErrorCode ISCompressIndicesSorted(PetscInt, PetscInt, PetscInt, const IS[], IS[]);
256: PETSC_EXTERN PetscErrorCode ISExpandIndicesGeneral(PetscInt, PetscInt, PetscInt, PetscInt, const IS[], IS[]);

258: struct _n_PetscLayout {
259:   MPI_Comm               comm;
260:   PetscMPIInt            size;
261:   PetscInt               n, N;         /* local, global vector size */
262:   PetscInt               rstart, rend; /* local start, local end + 1 */
263:   PetscInt              *range;        /* the offset of each processor */
264:   PetscBool              range_alloc;  /* should range be freed in Destroy? */
265:   PetscInt               bs;           /* number of elements in each block (generally for multi-component
266:                                        * problems). Defaults to -1 and can be arbitrarily lazy so always use
267:                                        * PetscAbs(map->bs) when accessing directly and expecting result to be
268:                                        * positive. Do NOT multiply above numbers by bs */
269:   PetscInt               refcnt;       /* MPI Vecs obtained with VecDuplicate() and from MatCreateVecs() reuse map of input object */
270:   ISLocalToGlobalMapping mapping;      /* mapping used in Vec/MatSetValuesLocal() */
271:   PetscBool              setupcalled;  /* Forbid setup more than once */
272:   PetscInt               oldn, oldN;   /* Checking if setup is allowed */
273:   PetscInt               oldbs;        /* And again */
274: };

276: /*@C
277:      PetscLayoutFindOwner - Find the owning rank for a global index

279:     Not Collective

281:    Input Parameters:
282: +    map - the layout
283: -    idx - global index to find the owner of

285:    Output Parameter:
286: .    owner - the owning rank

288:    Level: developer

290:     Fortran Note:
291:       Not available from Fortran

293: .seealso: `PetscLayoutFindOwnerIndex()`
294: @*/
295: static inline PetscErrorCode PetscLayoutFindOwner(PetscLayout map, PetscInt idx, PetscMPIInt *owner)
296: {
297:   PetscMPIInt lo = 0, hi, t;

299:   *owner = -1; /* GCC erroneously issues warning about possibly uninitialized use when error condition */
300: #if defined(PETSC_USE_DEBUG)
303: #endif
304:   hi = map->size;
305:   while (hi - lo > 1) {
306:     t = lo + (hi - lo) / 2;
307:     if (idx < map->range[t]) hi = t;
308:     else lo = t;
309:   }
310:   *owner = lo;
311:   return 0;
312: }

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

317:     Not Collective

319:    Input Parameters:
320: +    map   - the layout
321: -    idx   - global index to find the owner of

323:    Output Parameters:
324: +    owner - the owning rank
325: -    lidx  - local index used by the owner for idx

327:    Level: developer

329:     Fortran Note:
330:       Not available from Fortran

332: .seealso: `PetscLayoutFindOwner()`

334: @*/
335: static inline PetscErrorCode PetscLayoutFindOwnerIndex(PetscLayout map, PetscInt idx, PetscMPIInt *owner, PetscInt *lidx)
336: {
337:   PetscMPIInt lo = 0, hi, t;

339: #if defined(PETSC_USE_DEBUG)
342: #endif
343:   hi = map->size;
344:   while (hi - lo > 1) {
345:     t = lo + (hi - lo) / 2;
346:     if (idx < map->range[t]) hi = t;
347:     else lo = t;
348:   }
349:   if (owner) *owner = lo;
350:   if (lidx) *lidx = idx - map->range[lo];
351:   return 0;
352: }

354: PETSC_EXTERN PetscErrorCode PetscLayoutCreate(MPI_Comm, PetscLayout *);
355: PETSC_EXTERN PetscErrorCode PetscLayoutCreateFromSizes(MPI_Comm, PetscInt, PetscInt, PetscInt, PetscLayout *);
356: PETSC_EXTERN PetscErrorCode PetscLayoutCreateFromRanges(MPI_Comm, const PetscInt[], PetscCopyMode, PetscInt, PetscLayout *);
357: PETSC_EXTERN PetscErrorCode PetscLayoutSetUp(PetscLayout);
358: PETSC_EXTERN PetscErrorCode PetscLayoutDestroy(PetscLayout *);
359: PETSC_EXTERN PetscErrorCode PetscLayoutDuplicate(PetscLayout, PetscLayout *);
360: PETSC_EXTERN PetscErrorCode PetscLayoutReference(PetscLayout, PetscLayout *);
361: PETSC_EXTERN PetscErrorCode PetscLayoutSetLocalSize(PetscLayout, PetscInt);
362: PETSC_EXTERN PetscErrorCode PetscLayoutGetLocalSize(PetscLayout, PetscInt *);
363: PETSC_EXTERN PetscErrorCode PetscLayoutSetSize(PetscLayout, PetscInt);
364: PETSC_EXTERN PetscErrorCode PetscLayoutGetSize(PetscLayout, PetscInt *);
365: PETSC_EXTERN PetscErrorCode PetscLayoutSetBlockSize(PetscLayout, PetscInt);
366: PETSC_EXTERN PetscErrorCode PetscLayoutGetBlockSize(PetscLayout, PetscInt *);
367: PETSC_EXTERN PetscErrorCode PetscLayoutGetRange(PetscLayout, PetscInt *, PetscInt *);
368: PETSC_EXTERN PetscErrorCode PetscLayoutGetRanges(PetscLayout, const PetscInt *[]);
369: PETSC_EXTERN PetscErrorCode PetscLayoutCompare(PetscLayout, PetscLayout, PetscBool *);
370: PETSC_EXTERN PetscErrorCode PetscLayoutSetISLocalToGlobalMapping(PetscLayout, ISLocalToGlobalMapping);
371: PETSC_EXTERN PetscErrorCode PetscLayoutMapLocal(PetscLayout, PetscInt, const PetscInt[], PetscInt *, PetscInt **, PetscInt **);

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

375: PETSC_EXTERN PetscErrorCode ISGetLayout(IS, PetscLayout *);
376: PETSC_EXTERN PetscErrorCode ISSetLayout(IS, PetscLayout);

378: #endif