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: #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: PETSC_EXTERN PetscErrorCode ISDestroy(IS*);
 37: PETSC_EXTERN PetscErrorCode ISSetPermutation(IS);
 38: PETSC_EXTERN PetscErrorCode ISPermutation(IS,PetscBool*);
 39: PETSC_EXTERN PetscErrorCode ISSetIdentity(IS);
 40: PETSC_EXTERN PetscErrorCode ISIdentity(IS,PetscBool*);
 41: PETSC_EXTERN PetscErrorCode ISContiguousLocal(IS,PetscInt,PetscInt,PetscInt*,PetscBool*);

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

 46:     Level: beginner

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

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

 54: .seealso: ISSetInfo()
 55: E*/
 56: typedef enum {IS_INFO_MIN = -1,
 57:               IS_SORTED = 0,
 58:               IS_UNIQUE = 1,
 59:               IS_PERMUTATION = 2,
 60:               IS_INTERVAL = 3,
 61:               IS_IDENTITY = 4,
 62:               IS_INFO_MAX = 5} ISInfo;

 64: typedef enum {IS_LOCAL, IS_GLOBAL} ISInfoType;

 66: PETSC_EXTERN PetscErrorCode ISSetInfo(IS,ISInfo,ISInfoType,PetscBool,PetscBool);
 67: PETSC_EXTERN PetscErrorCode ISGetInfo(IS,ISInfo,ISInfoType,PetscBool,PetscBool*);
 68: PETSC_EXTERN PetscErrorCode ISClearInfoCache(IS,PetscBool);
 69: PETSC_EXTERN PetscErrorCode ISGetIndices(IS,const PetscInt*[]);
 70: PETSC_EXTERN PetscErrorCode ISRestoreIndices(IS,const PetscInt*[]);
 71: PETSC_EXTERN PetscErrorCode ISGetTotalIndices(IS,const PetscInt*[]);
 72: PETSC_EXTERN PetscErrorCode ISRestoreTotalIndices(IS,const PetscInt*[]);
 73: PETSC_EXTERN PetscErrorCode ISGetNonlocalIndices(IS,const PetscInt*[]);
 74: PETSC_EXTERN PetscErrorCode ISRestoreNonlocalIndices(IS,const PetscInt*[]);
 75: PETSC_EXTERN PetscErrorCode ISGetNonlocalIS(IS,IS*);
 76: PETSC_EXTERN PetscErrorCode ISRestoreNonlocalIS(IS,IS*);
 77: PETSC_EXTERN PetscErrorCode ISGetSize(IS,PetscInt*);
 78: PETSC_EXTERN PetscErrorCode ISGetLocalSize(IS,PetscInt*);
 79: PETSC_EXTERN PetscErrorCode ISInvertPermutation(IS,PetscInt,IS*);
 80: PETSC_EXTERN PetscErrorCode ISView(IS,PetscViewer);
 81: PETSC_EXTERN PetscErrorCode ISViewFromOptions(IS,PetscObject,const char[]);
 82: PETSC_EXTERN PetscErrorCode ISLoad(IS,PetscViewer);
 83: PETSC_EXTERN PetscErrorCode ISEqual(IS,IS,PetscBool*);
 84: PETSC_EXTERN PetscErrorCode ISEqualUnsorted(IS,IS,PetscBool *);
 85: PETSC_EXTERN PetscErrorCode ISSort(IS);
 86: PETSC_EXTERN PetscErrorCode ISSortRemoveDups(IS);
 87: PETSC_EXTERN PetscErrorCode ISSorted(IS,PetscBool*);
 88: PETSC_EXTERN PetscErrorCode ISDifference(IS,IS,IS*);
 89: PETSC_EXTERN PetscErrorCode ISSum(IS,IS,IS*);
 90: PETSC_EXTERN PetscErrorCode ISExpand(IS,IS,IS*);
 91: PETSC_EXTERN PetscErrorCode ISIntersect(IS,IS,IS*);
 92: PETSC_EXTERN PetscErrorCode ISGetMinMax(IS,PetscInt*,PetscInt*);

 94: PETSC_EXTERN PetscErrorCode ISLocate(IS,PetscInt,PetscInt*);
 95: PETSC_EXTERN PetscErrorCode ISGetPointRange(IS,PetscInt*,PetscInt*,const PetscInt**);
 96: PETSC_EXTERN PetscErrorCode ISRestorePointRange(IS,PetscInt*,PetscInt*,const PetscInt**);
 97: PETSC_EXTERN PetscErrorCode ISGetPointSubrange(IS,PetscInt,PetscInt,const PetscInt*);

 99: PETSC_EXTERN PetscErrorCode ISGetBlockSize(IS,PetscInt*);
100: PETSC_EXTERN PetscErrorCode ISSetBlockSize(IS,PetscInt);

102: PETSC_EXTERN PetscErrorCode ISToGeneral(IS);

104: PETSC_EXTERN PetscErrorCode ISDuplicate(IS,IS*);
105: PETSC_EXTERN PetscErrorCode ISCopy(IS,IS);
106: PETSC_EXTERN PetscErrorCode ISAllGather(IS,IS*);
107: PETSC_EXTERN PetscErrorCode ISComplement(IS,PetscInt,PetscInt,IS*);
108: PETSC_EXTERN PetscErrorCode ISConcatenate(MPI_Comm,PetscInt,const IS[],IS*);
109: PETSC_EXTERN PetscErrorCode ISListToPair(MPI_Comm,PetscInt,IS[],IS*,IS*);
110: PETSC_EXTERN PetscErrorCode ISPairToList(IS,IS,PetscInt*,IS*[]);
111: PETSC_EXTERN PetscErrorCode ISEmbed(IS,IS,PetscBool,IS*);
112: PETSC_EXTERN PetscErrorCode ISSortPermutation(IS,PetscBool,IS*);
113: PETSC_EXTERN PetscErrorCode ISOnComm(IS,MPI_Comm,PetscCopyMode,IS*);
114: PETSC_EXTERN PetscErrorCode ISRenumber(IS,IS,PetscInt*,IS*);
115: PETSC_EXTERN PetscErrorCode ISCreateSubIS(IS,IS,IS*);

117: /* ISGENERAL specific */
118: PETSC_EXTERN PetscErrorCode ISCreateGeneral(MPI_Comm,PetscInt,const PetscInt[],PetscCopyMode,IS*);
119: PETSC_EXTERN PetscErrorCode ISGeneralSetIndices(IS,PetscInt,const PetscInt[],PetscCopyMode);
120: PETSC_EXTERN PetscErrorCode ISGeneralSetIndicesFromMask(IS,PetscInt,PetscInt,const PetscBool[]);
121: PETSC_EXTERN PetscErrorCode ISGeneralFilter(IS,PetscInt,PetscInt);

123: /* ISBLOCK specific */
124: PETSC_EXTERN PetscErrorCode ISCreateBlock(MPI_Comm,PetscInt,PetscInt,const PetscInt[],PetscCopyMode,IS*);
125: PETSC_EXTERN PetscErrorCode ISBlockSetIndices(IS,PetscInt,PetscInt,const PetscInt[],PetscCopyMode);
126: PETSC_EXTERN PetscErrorCode ISBlockGetIndices(IS,const PetscInt*[]);
127: PETSC_EXTERN PetscErrorCode ISBlockRestoreIndices(IS,const PetscInt*[]);
128: PETSC_EXTERN PetscErrorCode ISBlockGetLocalSize(IS,PetscInt*);
129: PETSC_EXTERN PetscErrorCode ISBlockGetSize(IS,PetscInt*);

131: /* ISSTRIDE specific */
132: PETSC_EXTERN PetscErrorCode ISCreateStride(MPI_Comm,PetscInt,PetscInt,PetscInt,IS*);
133: PETSC_EXTERN PetscErrorCode ISStrideSetStride(IS,PetscInt,PetscInt,PetscInt);
134: PETSC_EXTERN PetscErrorCode ISStrideGetInfo(IS,PetscInt*,PetscInt*);

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

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

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

145:    Level: beginner

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

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

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

155:    Level: beginner

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

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

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

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

203:     Level: beginner

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

213: .seealso: DMCreateColoring()
214: E*/
215: typedef enum {IS_COLORING_GLOBAL,IS_COLORING_LOCAL} ISColoringType;
216: PETSC_EXTERN const char *const ISColoringTypes[];
217: typedef unsigned PETSC_IS_COLORING_VALUE_TYPE ISColoringValue;
218: #define IS_COLORING_MAX PETSC_IS_COLORING_MAX
219: #define MPIU_COLORING_VALUE PETSC_MPIU_IS_COLORING_VALUE_TYPE
220: PETSC_EXTERN PetscErrorCode ISAllGatherColors(MPI_Comm,PetscInt,ISColoringValue*,PetscInt*,ISColoringValue*[]);

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

233: /* --------------------------------------------------------------------------*/
234: PETSC_EXTERN PetscErrorCode ISBuildTwoSided(IS,IS,IS*);
235: PETSC_EXTERN PetscErrorCode ISPartitioningToNumbering(IS,IS*);
236: PETSC_EXTERN PetscErrorCode ISPartitioningCount(IS,PetscInt,PetscInt[]);

238: PETSC_EXTERN PetscErrorCode ISCompressIndicesGeneral(PetscInt,PetscInt,PetscInt,PetscInt,const IS[],IS[]);
239: PETSC_EXTERN PetscErrorCode ISCompressIndicesSorted(PetscInt,PetscInt,PetscInt,const IS[],IS[]);
240: PETSC_EXTERN PetscErrorCode ISExpandIndicesGeneral(PetscInt,PetscInt,PetscInt,PetscInt,const IS[],IS[]);

242: struct _n_PetscLayout{
243:   MPI_Comm               comm;
244:   PetscMPIInt            size;
245:   PetscInt               n,N;         /* local, global vector size */
246:   PetscInt               rstart,rend; /* local start, local end + 1 */
247:   PetscInt               *range;      /* the offset of each processor */
248:   PetscBool              range_alloc; /* should range be freed in Destroy? */
249:   PetscInt               bs;          /* number of elements in each block (generally for multi-component
250:                                        * problems). Defaults to -1 and can be arbitrarily lazy so always use
251:                                        * PetscAbs(map->bs) when accessing directly and expecting result to be
252:                                        * positive. Do NOT multiply above numbers by bs */
253:   PetscInt               refcnt;      /* MPI Vecs obtained with VecDuplicate() and from MatCreateVecs() reuse map of input object */
254:   ISLocalToGlobalMapping mapping;     /* mapping used in Vec/MatSetValuesLocal() */
255:   PetscBool              setupcalled; /* Forbid setup more than once */
256:   PetscInt               oldn,oldN;   /* Checking if setup is allowed */
257:   PetscInt               oldbs;       /* And again */
258: };

260: /*@C
261:      PetscLayoutFindOwner - Find the owning rank for a global index

263:     Not Collective

265:    Input Parameters:
266: +    map - the layout
267: -    idx - global index to find the owner of

269:    Output Parameter:
270: .    owner - the owning rank

272:    Level: developer

274:     Fortran Notes:
275:       Not available from Fortran

277: @*/
278: static inline PetscErrorCode PetscLayoutFindOwner(PetscLayout map,PetscInt idx,PetscMPIInt *owner)
279: {
280:   PetscMPIInt lo = 0,hi,t;

282:   *owner = -1;                  /* GCC erroneously issues warning about possibly uninitialized use when error condition */
283: #if defined(PETSC_USE_DEBUG)
286: #endif
287:   hi = map->size;
288:   while (hi - lo > 1) {
289:     t = lo + (hi - lo) / 2;
290:     if (idx < map->range[t]) hi = t;
291:     else                     lo = t;
292:   }
293:   *owner = lo;
294:   return 0;
295: }

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

300:     Not Collective

302:    Input Parameters:
303: +    map   - the layout
304: -    idx   - global index to find the owner of

306:    Output Parameters:
307: +    owner - the owning rank
308: -    lidx  - local index used by the owner for idx

310:    Level: developer

312:     Fortran Notes:
313:       Not available from Fortran

315: @*/
316: static inline PetscErrorCode PetscLayoutFindOwnerIndex(PetscLayout map,PetscInt idx,PetscMPIInt *owner,PetscInt *lidx)
317: {
318:   PetscMPIInt lo = 0,hi,t;

320: #if defined(PETSC_USE_DEBUG)
323: #endif
324:   hi = map->size;
325:   while (hi - lo > 1) {
326:     t = lo + (hi - lo) / 2;
327:     if (idx < map->range[t]) hi = t;
328:     else                     lo = t;
329:   }
330:   if (owner) *owner = lo;
331:   if (lidx) *lidx  = idx - map->range[lo];
332:   return 0;
333: }

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

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

356: PETSC_EXTERN PetscErrorCode ISGetLayout(IS,PetscLayout*);
357: PETSC_EXTERN PetscErrorCode ISSetLayout(IS,PetscLayout);

359: #endif