Actual source code: petscviewer.h

petsc-dev 2014-02-02
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  1: /*
  2:      PetscViewers are objects where other objects can be looked at or stored.
  3: */


  8: #include <petscsys.h>
  9: #include <petscviewertypes.h>

 11: PETSC_EXTERN PetscClassId PETSC_VIEWER_CLASSID;

 13: /*J
 14:     PetscViewerType - String with the name of a PETSc PETScViewer

 16:    Level: beginner

 18: .seealso: PetscViewerSetType(), PetscViewer, PetscViewerRegister(), PetscViewerCreate()
 19: J*/
 20: typedef const char* PetscViewerType;
 21: #define PETSCVIEWERSOCKET       "socket"
 22: #define PETSCVIEWERASCII        "ascii"
 23: #define PETSCVIEWERBINARY       "binary"
 24: #define PETSCVIEWERSTRING       "string"
 25: #define PETSCVIEWERDRAW         "draw"
 26: #define PETSCVIEWERVU           "vu"
 27: #define PETSCVIEWERMATHEMATICA  "mathematica"
 28: #define PETSCVIEWERNETCDF       "netcdf"
 29: #define PETSCVIEWERHDF5         "hdf5"
 30: #define PETSCVIEWERVTK          "vtk"
 31: #define PETSCVIEWERMATLAB       "matlab"
 32: #define PETSCVIEWERSAWS          "saws"

 34: PETSC_EXTERN PetscFunctionList PetscViewerList;
 35: PETSC_EXTERN PetscErrorCode PetscViewerRegisterAll(void);
 36: PETSC_EXTERN PetscErrorCode PetscViewerInitializePackage(void);

 38: PETSC_EXTERN PetscErrorCode PetscViewerRegister(const char[],PetscErrorCode (*)(PetscViewer));

 40: PETSC_EXTERN PetscErrorCode PetscViewerCreate(MPI_Comm,PetscViewer*);
 41: PETSC_EXTERN PetscErrorCode PetscViewerSetFromOptions(PetscViewer);
 42: PETSC_EXTERN PetscErrorCode PetscViewerASCIIOpenWithFILE(MPI_Comm,FILE*,PetscViewer*);

 44: PETSC_EXTERN PetscErrorCode PetscViewerASCIIOpen(MPI_Comm,const char[],PetscViewer*);
 45: PETSC_EXTERN PetscErrorCode PetscViewerASCIISetFILE(PetscViewer,FILE*);
 46: PETSC_EXTERN PetscErrorCode PetscViewerBinaryOpen(MPI_Comm,const char[],PetscFileMode,PetscViewer*);
 47: PETSC_EXTERN PetscErrorCode PetscViewerBinaryGetFlowControl(PetscViewer,PetscInt*);
 48: PETSC_EXTERN PetscErrorCode PetscViewerBinarySetFlowControl(PetscViewer,PetscInt);
 49: PETSC_EXTERN PetscErrorCode PetscViewerBinarySetMPIIO(PetscViewer);
 50: PETSC_EXTERN PetscErrorCode PetscViewerBinaryGetMPIIO(PetscViewer,PetscBool *);
 51: #if defined(PETSC_HAVE_MPIIO)
 52: PETSC_EXTERN PetscErrorCode PetscViewerBinaryGetMPIIODescriptor(PetscViewer,MPI_File*);
 53: PETSC_EXTERN PetscErrorCode PetscViewerBinaryGetMPIIOOffset(PetscViewer,MPI_Offset*);
 54: PETSC_EXTERN PetscErrorCode PetscViewerBinaryAddMPIIOOffset(PetscViewer,MPI_Offset);
 55: #endif

 57: PETSC_EXTERN PetscErrorCode PetscViewerSocketOpen(MPI_Comm,const char[],int,PetscViewer*);
 58: PETSC_EXTERN PetscErrorCode PetscViewerStringOpen(MPI_Comm,char[],PetscInt,PetscViewer*);
 59: PETSC_EXTERN PetscErrorCode PetscViewerDrawOpen(MPI_Comm,const char[],const char[],int,int,int,int,PetscViewer*);
 60: #include <petscdrawtypes.h>
 61: PETSC_EXTERN PetscErrorCode PetscViewerDrawSetDrawType(PetscViewer,PetscDrawType);
 62: PETSC_EXTERN PetscErrorCode PetscViewerMathematicaOpen(MPI_Comm, int, const char[], const char[], PetscViewer *);
 63: PETSC_EXTERN PetscErrorCode PetscViewerSiloOpen(MPI_Comm, const char[], PetscViewer *);
 64: PETSC_EXTERN PetscErrorCode PetscViewerMatlabOpen(MPI_Comm,const char[],PetscFileMode,PetscViewer*);

 66: PETSC_EXTERN PetscErrorCode PetscViewerGetType(PetscViewer,PetscViewerType*);
 67: PETSC_EXTERN PetscErrorCode PetscViewerSetType(PetscViewer,PetscViewerType);
 68: PETSC_EXTERN PetscErrorCode PetscViewerDestroy(PetscViewer*);
 69: PETSC_EXTERN PetscErrorCode PetscViewerGetSingleton(PetscViewer,PetscViewer*);
 70: PETSC_EXTERN PetscErrorCode PetscViewerRestoreSingleton(PetscViewer,PetscViewer*);
 71: PETSC_EXTERN PetscErrorCode PetscViewerGetSubcomm(PetscViewer,MPI_Comm,PetscViewer*);
 72: PETSC_EXTERN PetscErrorCode PetscViewerRestoreSubcomm(PetscViewer,MPI_Comm,PetscViewer*);

 74: PETSC_EXTERN PetscErrorCode PetscViewerSetUp(PetscViewer);
 75: PETSC_EXTERN PetscErrorCode PetscViewerView(PetscViewer,PetscViewer);
 76: PETSC_STATIC_INLINE PetscErrorCode PetscViewerViewFromOptions(PetscViewer A,const char prefix[],const char name[]) {return PetscObjectViewFromOptions((PetscObject)A,prefix,name);}

 78: PETSC_EXTERN PetscErrorCode PetscViewerSetOptionsPrefix(PetscViewer,const char[]);
 79: PETSC_EXTERN PetscErrorCode PetscViewerAppendOptionsPrefix(PetscViewer,const char[]);
 80: PETSC_EXTERN PetscErrorCode PetscViewerGetOptionsPrefix(PetscViewer,const char*[]);

 82: /*E
 83:     PetscViewerFormat - Way a viewer presents the object

 85:    Level: beginner

 87:    The values below are also listed in finclude/petscviewer.h. If another values is added below it
 88:    must also be added there.

 90: .seealso: PetscViewerSetFormat(), PetscViewer, PetscViewerType, PetscViewerPushFormat(), PetscViewerPopFormat()
 91: E*/
 92: typedef enum {
 93:   PETSC_VIEWER_DEFAULT,
 94:   PETSC_VIEWER_ASCII_MATLAB,
 95:   PETSC_VIEWER_ASCII_MATHEMATICA,
 96:   PETSC_VIEWER_ASCII_IMPL,
 97:   PETSC_VIEWER_ASCII_INFO,
 98:   PETSC_VIEWER_ASCII_INFO_DETAIL,
 99:   PETSC_VIEWER_ASCII_COMMON,
100:   PETSC_VIEWER_ASCII_SYMMODU,
101:   PETSC_VIEWER_ASCII_INDEX,
102:   PETSC_VIEWER_ASCII_DENSE,
103:   PETSC_VIEWER_ASCII_MATRIXMARKET,
104:   PETSC_VIEWER_ASCII_VTK,
105:   PETSC_VIEWER_ASCII_VTK_CELL,
106:   PETSC_VIEWER_ASCII_VTK_COORDS,
107:   PETSC_VIEWER_ASCII_PCICE,
108:   PETSC_VIEWER_ASCII_PYTHON,
109:   PETSC_VIEWER_ASCII_FACTOR_INFO,
110:   PETSC_VIEWER_ASCII_LATEX,
111:   PETSC_VIEWER_DRAW_BASIC,
112:   PETSC_VIEWER_DRAW_LG,
113:   PETSC_VIEWER_DRAW_CONTOUR,
114:   PETSC_VIEWER_DRAW_PORTS,
115:   PETSC_VIEWER_VTK_VTS,
116:   PETSC_VIEWER_VTK_VTR,
117:   PETSC_VIEWER_VTK_VTU,
118:   PETSC_VIEWER_BINARY_MATLAB,
119:   PETSC_VIEWER_NATIVE,
120:   PETSC_VIEWER_NOFORMAT
121:   } PetscViewerFormat;
122: PETSC_EXTERN const char *const PetscViewerFormats[];

124: PETSC_EXTERN PetscErrorCode PetscViewerSetFormat(PetscViewer,PetscViewerFormat);
125: PETSC_EXTERN PetscErrorCode PetscViewerPushFormat(PetscViewer,PetscViewerFormat);
126: PETSC_EXTERN PetscErrorCode PetscViewerPopFormat(PetscViewer);
127: PETSC_EXTERN PetscErrorCode PetscViewerGetFormat(PetscViewer,PetscViewerFormat*);
128: PETSC_EXTERN PetscErrorCode PetscViewerFlush(PetscViewer);

130: PETSC_EXTERN PetscErrorCode PetscOptionsGetViewer(MPI_Comm,const char[],const char[],PetscViewer*,PetscViewerFormat*,PetscBool*);
131: PETSC_EXTERN PetscErrorCode PetscOptionsViewer(const char[],const char[],const char[],PetscViewer*,PetscViewerFormat *,PetscBool *);

133: /*
134:    Operations explicit to a particular class of viewers
135: */

137: PETSC_EXTERN PetscErrorCode PetscViewerASCIIGetPointer(PetscViewer,FILE**);
138: PETSC_EXTERN PetscErrorCode PetscViewerFileGetMode(PetscViewer,PetscFileMode*);
139: PETSC_EXTERN PetscErrorCode PetscViewerFileSetMode(PetscViewer,PetscFileMode);
140: PETSC_EXTERN PetscErrorCode PetscViewerASCIIPrintf(PetscViewer,const char[],...);
141: PETSC_EXTERN PetscErrorCode PetscViewerASCIISynchronizedPrintf(PetscViewer,const char[],...);
142: PETSC_EXTERN PetscErrorCode PetscViewerASCIISynchronizedAllow(PetscViewer,PetscBool);
143: PETSC_EXTERN PetscErrorCode PetscViewerASCIIPushTab(PetscViewer);
144: PETSC_EXTERN PetscErrorCode PetscViewerASCIIPopTab(PetscViewer);
145: PETSC_EXTERN PetscErrorCode PetscViewerASCIIUseTabs(PetscViewer,PetscBool );
146: PETSC_EXTERN PetscErrorCode PetscViewerASCIISetTab(PetscViewer,PetscInt);
147: PETSC_EXTERN PetscErrorCode PetscViewerASCIIGetTab(PetscViewer,PetscInt*);
148: PETSC_EXTERN PetscErrorCode PetscViewerASCIIAddTab(PetscViewer,PetscInt);
149: PETSC_EXTERN PetscErrorCode PetscViewerASCIISubtractTab(PetscViewer,PetscInt);
150: PETSC_EXTERN PetscErrorCode PetscViewerBinaryGetDescriptor(PetscViewer,int*);
151: PETSC_EXTERN PetscErrorCode PetscViewerBinaryGetInfoPointer(PetscViewer,FILE **);
152: PETSC_EXTERN PetscErrorCode PetscViewerBinaryRead(PetscViewer,void*,PetscInt,PetscDataType);
153: PETSC_EXTERN PetscErrorCode PetscViewerBinaryWrite(PetscViewer,void*,PetscInt,PetscDataType,PetscBool );
154: PETSC_EXTERN PetscErrorCode PetscViewerStringSPrintf(PetscViewer,const char[],...);
155: PETSC_EXTERN PetscErrorCode PetscViewerStringSetString(PetscViewer,char[],PetscInt);
156: PETSC_EXTERN PetscErrorCode PetscViewerDrawClear(PetscViewer);
157: PETSC_EXTERN PetscErrorCode PetscViewerDrawSetHold(PetscViewer,PetscBool);
158: PETSC_EXTERN PetscErrorCode PetscViewerDrawGetHold(PetscViewer,PetscBool*);
159: PETSC_EXTERN PetscErrorCode PetscViewerDrawSetPause(PetscViewer,PetscReal);
160: PETSC_EXTERN PetscErrorCode PetscViewerDrawGetPause(PetscViewer,PetscReal*);
161: PETSC_EXTERN PetscErrorCode PetscViewerDrawSetInfo(PetscViewer,const char[],const char[],int,int,int,int);
162: PETSC_EXTERN PetscErrorCode PetscViewerDrawResize(PetscViewer,int,int);
163: PETSC_EXTERN PetscErrorCode PetscViewerDrawSetBounds(PetscViewer,PetscInt,const PetscReal*);
164: PETSC_EXTERN PetscErrorCode PetscViewerDrawGetBounds(PetscViewer,PetscInt*,const PetscReal**);
165: PETSC_EXTERN PetscErrorCode PetscViewerSocketSetConnection(PetscViewer,const char[],int);
166: PETSC_EXTERN PetscErrorCode PetscViewerBinarySkipInfo(PetscViewer);
167: PETSC_EXTERN PetscErrorCode PetscViewerBinarySetSkipOptions(PetscViewer,PetscBool );
168: PETSC_EXTERN PetscErrorCode PetscViewerBinaryGetSkipOptions(PetscViewer,PetscBool *);
169: PETSC_EXTERN PetscErrorCode PetscViewerBinarySetSkipHeader(PetscViewer,PetscBool);
170: PETSC_EXTERN PetscErrorCode PetscViewerBinaryGetSkipHeader(PetscViewer,PetscBool*);
171: PETSC_EXTERN PetscErrorCode PetscViewerBinaryReadStringArray(PetscViewer,char***);
172: PETSC_EXTERN PetscErrorCode PetscViewerBinaryWriteStringArray(PetscViewer,char**);

174: PETSC_EXTERN PetscErrorCode PetscViewerFileSetName(PetscViewer,const char[]);
175: PETSC_EXTERN PetscErrorCode PetscViewerFileGetName(PetscViewer,const char**);

177: PETSC_EXTERN PetscErrorCode PetscViewerVUGetPointer(PetscViewer, FILE**);
178: PETSC_EXTERN PetscErrorCode PetscViewerVUSetVecSeen(PetscViewer, PetscBool );
179: PETSC_EXTERN PetscErrorCode PetscViewerVUGetVecSeen(PetscViewer, PetscBool  *);
180: PETSC_EXTERN PetscErrorCode PetscViewerVUPrintDeferred(PetscViewer, const char [], ...);
181: PETSC_EXTERN PetscErrorCode PetscViewerVUFlushDeferred(PetscViewer);

183: PETSC_EXTERN PetscErrorCode PetscViewerMathematicaInitializePackage(void);
184: PETSC_EXTERN PetscErrorCode PetscViewerMathematicaFinalizePackage(void);
185: PETSC_EXTERN PetscErrorCode PetscViewerMathematicaGetName(PetscViewer, const char **);
186: PETSC_EXTERN PetscErrorCode PetscViewerMathematicaSetName(PetscViewer, const char []);
187: PETSC_EXTERN PetscErrorCode PetscViewerMathematicaClearName(PetscViewer);
188: PETSC_EXTERN PetscErrorCode PetscViewerMathematicaSkipPackets(PetscViewer, int);

190: PETSC_EXTERN PetscErrorCode PetscViewerSiloGetName(PetscViewer, char **);
191: PETSC_EXTERN PetscErrorCode PetscViewerSiloSetName(PetscViewer, const char []);
192: PETSC_EXTERN PetscErrorCode PetscViewerSiloClearName(PetscViewer);
193: PETSC_EXTERN PetscErrorCode PetscViewerSiloGetMeshName(PetscViewer, char **);
194: PETSC_EXTERN PetscErrorCode PetscViewerSiloSetMeshName(PetscViewer, const char []);
195: PETSC_EXTERN PetscErrorCode PetscViewerSiloClearMeshName(PetscViewer);

197: PETSC_EXTERN PetscErrorCode PetscViewerNetcdfOpen(MPI_Comm,const char[],PetscFileMode,PetscViewer*);
198: PETSC_EXTERN PetscErrorCode PetscViewerNetcdfGetID(PetscViewer, int *);

200: typedef enum {PETSC_VTK_POINT_FIELD, PETSC_VTK_POINT_VECTOR_FIELD, PETSC_VTK_CELL_FIELD, PETSC_VTK_CELL_VECTOR_FIELD} PetscViewerVTKFieldType;
201: PETSC_EXTERN PetscErrorCode PetscViewerVTKAddField(PetscViewer,PetscObject,PetscErrorCode (*PetscViewerVTKWriteFunction)(PetscObject,PetscViewer),PetscViewerVTKFieldType,PetscObject);
202: PETSC_EXTERN PetscErrorCode PetscViewerVTKOpen(MPI_Comm,const char[],PetscFileMode,PetscViewer*);

204: /*
205:      These are all the default viewers that do not have to be explicitly opened
206: */
207: PETSC_EXTERN PetscViewer    PETSC_VIEWER_STDOUT_(MPI_Comm);
208: PETSC_EXTERN PetscErrorCode PetscViewerASCIIGetStdout(MPI_Comm,PetscViewer*);
209: PETSC_EXTERN PetscViewer    PETSC_VIEWER_STDERR_(MPI_Comm);
210: PETSC_EXTERN PetscErrorCode PetscViewerASCIIGetStderr(MPI_Comm,PetscViewer*);
211: PETSC_EXTERN PetscViewer    PETSC_VIEWER_DRAW_(MPI_Comm);
212: PETSC_EXTERN PetscViewer    PETSC_VIEWER_SOCKET_(MPI_Comm);
213: PETSC_EXTERN PetscViewer    PETSC_VIEWER_BINARY_(MPI_Comm);
214: PETSC_EXTERN PetscViewer    PETSC_VIEWER_MATLAB_(MPI_Comm);
215: PETSC_EXTERN PetscViewer   PETSC_VIEWER_MATHEMATICA_WORLD_PRIVATE;

217: #define PETSC_VIEWER_STDERR_SELF  PETSC_VIEWER_STDERR_(PETSC_COMM_SELF)
218: #define PETSC_VIEWER_STDERR_WORLD PETSC_VIEWER_STDERR_(PETSC_COMM_WORLD)

220: /*MC
221:   PETSC_VIEWER_STDOUT_WORLD  - same as PETSC_VIEWER_STDOUT_(PETSC_COMM_WORLD)

223:   Level: beginner
224: M*/
225: #define PETSC_VIEWER_STDOUT_WORLD PETSC_VIEWER_STDOUT_(PETSC_COMM_WORLD)

227: /*MC
228:   PETSC_VIEWER_STDOUT_SELF  - same as PETSC_VIEWER_STDOUT_(PETSC_COMM_SELF)

230:   Level: beginner
231: M*/
232: #define PETSC_VIEWER_STDOUT_SELF  PETSC_VIEWER_STDOUT_(PETSC_COMM_SELF)

234: /*MC
235:   PETSC_VIEWER_DRAW_WORLD  - same as PETSC_VIEWER_DRAW_(PETSC_COMM_WORLD)

237:   Level: intermediate
238: M*/
239: #define PETSC_VIEWER_DRAW_WORLD   PETSC_VIEWER_DRAW_(PETSC_COMM_WORLD)

241: /*MC
242:   PETSC_VIEWER_DRAW_SELF  - same as PETSC_VIEWER_DRAW_(PETSC_COMM_SELF)

244:   Level: intermediate
245: M*/
246: #define PETSC_VIEWER_DRAW_SELF    PETSC_VIEWER_DRAW_(PETSC_COMM_SELF)

248: /*MC
249:   PETSC_VIEWER_SOCKET_WORLD  - same as PETSC_VIEWER_SOCKET_(PETSC_COMM_WORLD)

251:   Level: intermediate
252: M*/
253: #define PETSC_VIEWER_SOCKET_WORLD PETSC_VIEWER_SOCKET_(PETSC_COMM_WORLD)

255: /*MC
256:   PETSC_VIEWER_SOCKET_SELF  - same as PETSC_VIEWER_SOCKET_(PETSC_COMM_SELF)

258:   Level: intermediate
259: M*/
260: #define PETSC_VIEWER_SOCKET_SELF  PETSC_VIEWER_SOCKET_(PETSC_COMM_SELF)

262: /*MC
263:   PETSC_VIEWER_BINARY_WORLD  - same as PETSC_VIEWER_BINARY_(PETSC_COMM_WORLD)

265:   Level: intermediate
266: M*/
267: #define PETSC_VIEWER_BINARY_WORLD PETSC_VIEWER_BINARY_(PETSC_COMM_WORLD)

269: /*MC
270:   PETSC_VIEWER_BINARY_SELF  - same as PETSC_VIEWER_BINARY_(PETSC_COMM_SELF)

272:   Level: intermediate
273: M*/
274: #define PETSC_VIEWER_BINARY_SELF  PETSC_VIEWER_BINARY_(PETSC_COMM_SELF)

276: /*MC
277:   PETSC_VIEWER_MATLAB_WORLD  - same as PETSC_VIEWER_MATLAB_(PETSC_COMM_WORLD)

279:   Level: intermediate
280: M*/
281: #define PETSC_VIEWER_MATLAB_WORLD PETSC_VIEWER_MATLAB_(PETSC_COMM_WORLD)

283: /*MC
284:   PETSC_VIEWER_MATLAB_SELF  - same as PETSC_VIEWER_MATLAB_(PETSC_COMM_SELF)

286:   Level: intermediate
287: M*/
288: #define PETSC_VIEWER_MATLAB_SELF  PETSC_VIEWER_MATLAB_(PETSC_COMM_SELF)

290: #define PETSC_VIEWER_MATHEMATICA_WORLD (PetscViewerInitializeMathematicaWorld_Private(),PETSC_VIEWER_MATHEMATICA_WORLD_PRIVATE)

294: PETSC_STATIC_INLINE PetscErrorCode PetscViewerFlowControlStart(PetscViewer viewer,PetscInt *mcnt,PetscInt *cnt)
295: {
298:   PetscViewerBinaryGetFlowControl(viewer,mcnt);
299:   PetscViewerBinaryGetFlowControl(viewer,cnt);
300:   return(0);
301: }

305: PETSC_STATIC_INLINE PetscErrorCode PetscViewerFlowControlStepMaster(PetscViewer viewer,PetscInt i,PetscInt *mcnt,PetscInt cnt)
306: {
308:   MPI_Comm       comm;

311:   PetscObjectGetComm((PetscObject)viewer,&comm);
312:   if (i >= *mcnt) {
313:     *mcnt += cnt;
314:     MPI_Bcast(mcnt,1,MPIU_INT,0,comm);
315:   }
316:   return(0);
317: }

321: PETSC_STATIC_INLINE PetscErrorCode PetscViewerFlowControlEndMaster(PetscViewer viewer,PetscInt *mcnt)
322: {
324:   MPI_Comm       comm;
326:   PetscObjectGetComm((PetscObject)viewer,&comm);
327:   *mcnt = 0;
328:   MPI_Bcast(mcnt,1,MPIU_INT,0,comm);
329:   return(0);
330: }

334: PETSC_STATIC_INLINE PetscErrorCode PetscViewerFlowControlStepWorker(PetscViewer viewer,PetscMPIInt rank,PetscInt *mcnt)
335: {
337:   MPI_Comm       comm;
339:   PetscObjectGetComm((PetscObject)viewer,&comm);
340:   while (PETSC_TRUE) {
341:     if (rank < *mcnt) break;
342:     MPI_Bcast(mcnt,1,MPIU_INT,0,comm);
343:   }
344:   return(0);
345: }

349: PETSC_STATIC_INLINE PetscErrorCode PetscViewerFlowControlEndWorker(PetscViewer viewer,PetscInt *mcnt)
350: {
352:   MPI_Comm       comm;
354:   PetscObjectGetComm((PetscObject)viewer,&comm);
355:   while (PETSC_TRUE) {
356:     MPI_Bcast(mcnt,1,MPIU_INT,0,comm);
357:     if (!*mcnt) break;
358:   }
359:   return(0);
360: }

362: /*
363:    PetscViewer writes to MATLAB .mat file
364: */
365: PETSC_EXTERN PetscErrorCode PetscViewerMatlabPutArray(PetscViewer,int,int,const PetscScalar*,const char*);
366: PETSC_EXTERN PetscErrorCode PetscViewerMatlabGetArray(PetscViewer,int,int,PetscScalar*,const char*);
367: PETSC_EXTERN PetscErrorCode PetscViewerMatlabPutVariable(PetscViewer,const char*,void*);

369: #if defined(PETSC_HAVE_SAWS)
370: PETSC_EXTERN PetscErrorCode PetscObjectViewSAWs(PetscObject,PetscViewer);
371: #endif

373: /*S
374:      PetscViewers - Abstract collection of PetscViewers. It is just an expandable array of viewers.

376:    Level: intermediate

378:   Concepts: viewing

380: .seealso:  PetscViewerCreate(), PetscViewerSetType(), PetscViewerType, PetscViewer, PetscViewersCreate(),
381:            PetscViewersGetViewer()
382: S*/
383: typedef struct _n_PetscViewers* PetscViewers;
384: PETSC_EXTERN PetscErrorCode PetscViewersCreate(MPI_Comm,PetscViewers*);
385: PETSC_EXTERN PetscErrorCode PetscViewersDestroy(PetscViewers*);
386: PETSC_EXTERN PetscErrorCode PetscViewersGetViewer(PetscViewers,PetscInt,PetscViewer*);

388: /* Reset __FUNCT__ in case the user does not define it themselves */

392: #endif