Actual source code: petscviewer.h

petsc-master 2016-05-26
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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 PetscViewerInitializePackage(void);

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

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

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

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

 65: PETSC_EXTERN PetscErrorCode PetscViewerGetType(PetscViewer,PetscViewerType*);
 66: PETSC_EXTERN PetscErrorCode PetscViewerSetType(PetscViewer,PetscViewerType);
 67: PETSC_EXTERN PetscErrorCode PetscViewerDestroy(PetscViewer*);
 68: PETSC_EXTERN PetscErrorCode PetscViewerGetSubViewer(PetscViewer,MPI_Comm,PetscViewer*);
 69: PETSC_EXTERN PetscErrorCode PetscViewerRestoreSubViewer(PetscViewer,MPI_Comm,PetscViewer*);

 71: PETSC_EXTERN PetscErrorCode PetscViewerSetUp(PetscViewer);
 72: PETSC_EXTERN PetscErrorCode PetscViewerView(PetscViewer,PetscViewer);
 73: PETSC_STATIC_INLINE PetscErrorCode PetscViewerViewFromOptions(PetscViewer A,PetscObject obj,const char name[]) {return PetscObjectViewFromOptions((PetscObject)A,obj,name);}

 75: PETSC_EXTERN PetscErrorCode PetscViewerSetOptionsPrefix(PetscViewer,const char[]);
 76: PETSC_EXTERN PetscErrorCode PetscViewerAppendOptionsPrefix(PetscViewer,const char[]);
 77: PETSC_EXTERN PetscErrorCode PetscViewerGetOptionsPrefix(PetscViewer,const char*[]);

 79: /*E
 80:     PetscViewerFormat - Way a viewer presents the object

 82:    Level: beginner

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

 87: .seealso: PetscViewer, PetscViewerType, PetscViewerPushFormat(), PetscViewerPopFormat()
 88: E*/
 89: typedef enum {
 90:   PETSC_VIEWER_DEFAULT,
 91:   PETSC_VIEWER_ASCII_MATLAB,
 92:   PETSC_VIEWER_ASCII_MATHEMATICA,
 93:   PETSC_VIEWER_ASCII_IMPL,
 94:   PETSC_VIEWER_ASCII_INFO,
 95:   PETSC_VIEWER_ASCII_INFO_DETAIL,
 96:   PETSC_VIEWER_ASCII_COMMON,
 97:   PETSC_VIEWER_ASCII_SYMMODU,
 98:   PETSC_VIEWER_ASCII_INDEX,
 99:   PETSC_VIEWER_ASCII_DENSE,
100:   PETSC_VIEWER_ASCII_MATRIXMARKET,
101:   PETSC_VIEWER_ASCII_VTK,
102:   PETSC_VIEWER_ASCII_VTK_CELL,
103:   PETSC_VIEWER_ASCII_VTK_COORDS,
104:   PETSC_VIEWER_ASCII_PCICE,
105:   PETSC_VIEWER_ASCII_PYTHON,
106:   PETSC_VIEWER_ASCII_FACTOR_INFO,
107:   PETSC_VIEWER_ASCII_LATEX,
108:   PETSC_VIEWER_ASCII_XML,
109:   PETSC_VIEWER_DRAW_BASIC,
110:   PETSC_VIEWER_DRAW_LG,
111:   PETSC_VIEWER_DRAW_CONTOUR,
112:   PETSC_VIEWER_DRAW_PORTS,
113:   PETSC_VIEWER_VTK_VTS,
114:   PETSC_VIEWER_VTK_VTR,
115:   PETSC_VIEWER_VTK_VTU,
116:   PETSC_VIEWER_BINARY_MATLAB,
117:   PETSC_VIEWER_NATIVE,
118:   PETSC_VIEWER_HDF5_VIZ,
119:   PETSC_VIEWER_NOFORMAT
120:   } PetscViewerFormat;
121: PETSC_EXTERN const char *const PetscViewerFormats[];

123: PETSC_EXTERN PETSC_DEPRECATED("Use PetscViewerPushFormat()/PetscViewerPopFormat()") PetscErrorCode PetscViewerSetFormat(PetscViewer,PetscViewerFormat);
124: PETSC_EXTERN PetscErrorCode PetscViewerPushFormat(PetscViewer,PetscViewerFormat);
125: PETSC_EXTERN PetscErrorCode PetscViewerPopFormat(PetscViewer);
126: PETSC_EXTERN PetscErrorCode PetscViewerGetFormat(PetscViewer,PetscViewerFormat*);
127: PETSC_EXTERN PetscErrorCode PetscViewerFlush(PetscViewer);

129: PETSC_EXTERN PetscErrorCode PetscOptionsGetViewer(MPI_Comm,const char[],const char[],PetscViewer*,PetscViewerFormat*,PetscBool*);
130: #define PetscOptionsViewer(a,b,c,d,e,f) PetscOptionsViewer_Private(PetscOptionsObject,a,b,c,d,e,f);
131: PETSC_EXTERN PetscErrorCode PetscOptionsViewer_Private(PetscOptionItems*,const char[],const char[],const char[],PetscViewer*,PetscViewerFormat *,PetscBool *);

133: typedef struct {PetscViewer viewer;PetscViewerFormat format;} PetscViewerAndFormat;
134: PETSC_EXTERN PetscErrorCode  PetscViewerAndFormatCreate(PetscViewer,PetscViewerFormat,PetscViewerAndFormat**);
135: PETSC_EXTERN PetscErrorCode  PetscViewerAndFormatDestroy(PetscViewerAndFormat**);

137: /*
138:    Operations explicit to a particular class of viewers
139: */

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

183: PETSC_EXTERN PetscErrorCode PetscViewerFileSetName(PetscViewer,const char[]);
184: PETSC_EXTERN PetscErrorCode PetscViewerFileGetName(PetscViewer,const char**);

186: PETSC_EXTERN PetscErrorCode PetscViewerVUGetPointer(PetscViewer, FILE**);
187: PETSC_EXTERN PetscErrorCode PetscViewerVUSetVecSeen(PetscViewer, PetscBool );
188: PETSC_EXTERN PetscErrorCode PetscViewerVUGetVecSeen(PetscViewer, PetscBool  *);
189: PETSC_EXTERN PetscErrorCode PetscViewerVUPrintDeferred(PetscViewer, const char [], ...);
190: PETSC_EXTERN PetscErrorCode PetscViewerVUFlushDeferred(PetscViewer);

192: PETSC_EXTERN PetscErrorCode PetscViewerMathematicaInitializePackage(void);
193: PETSC_EXTERN PetscErrorCode PetscViewerMathematicaFinalizePackage(void);
194: PETSC_EXTERN PetscErrorCode PetscViewerMathematicaGetName(PetscViewer, const char **);
195: PETSC_EXTERN PetscErrorCode PetscViewerMathematicaSetName(PetscViewer, const char []);
196: PETSC_EXTERN PetscErrorCode PetscViewerMathematicaClearName(PetscViewer);
197: PETSC_EXTERN PetscErrorCode PetscViewerMathematicaSkipPackets(PetscViewer, int);

199: PETSC_EXTERN PetscErrorCode PetscViewerSiloGetName(PetscViewer, char **);
200: PETSC_EXTERN PetscErrorCode PetscViewerSiloSetName(PetscViewer, const char []);
201: PETSC_EXTERN PetscErrorCode PetscViewerSiloClearName(PetscViewer);
202: PETSC_EXTERN PetscErrorCode PetscViewerSiloGetMeshName(PetscViewer, char **);
203: PETSC_EXTERN PetscErrorCode PetscViewerSiloSetMeshName(PetscViewer, const char []);
204: PETSC_EXTERN PetscErrorCode PetscViewerSiloClearMeshName(PetscViewer);

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

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

213: /*
214:      These are all the default viewers that do not have to be explicitly opened
215: */
216: PETSC_EXTERN PetscViewer    PETSC_VIEWER_STDOUT_(MPI_Comm);
217: PETSC_EXTERN PetscErrorCode PetscViewerASCIIGetStdout(MPI_Comm,PetscViewer*);
218: PETSC_EXTERN PetscViewer    PETSC_VIEWER_STDERR_(MPI_Comm);
219: PETSC_EXTERN PetscErrorCode PetscViewerASCIIGetStderr(MPI_Comm,PetscViewer*);
220: PETSC_EXTERN PetscViewer    PETSC_VIEWER_DRAW_(MPI_Comm);
221: PETSC_EXTERN PetscViewer    PETSC_VIEWER_SOCKET_(MPI_Comm);
222: PETSC_EXTERN PetscViewer    PETSC_VIEWER_BINARY_(MPI_Comm);
223: PETSC_EXTERN PetscViewer    PETSC_VIEWER_MATLAB_(MPI_Comm);
224: PETSC_EXTERN PetscViewer    PETSC_VIEWER_HDF5_(MPI_Comm);
225: PETSC_EXTERN PetscViewer   PETSC_VIEWER_MATHEMATICA_WORLD_PRIVATE;

227: #define PETSC_VIEWER_STDERR_SELF  PETSC_VIEWER_STDERR_(PETSC_COMM_SELF)
228: #define PETSC_VIEWER_STDERR_WORLD PETSC_VIEWER_STDERR_(PETSC_COMM_WORLD)

230: /*MC
231:   PETSC_VIEWER_STDOUT_WORLD  - same as PETSC_VIEWER_STDOUT_(PETSC_COMM_WORLD)

233:   Level: beginner
234: M*/
235: #define PETSC_VIEWER_STDOUT_WORLD PETSC_VIEWER_STDOUT_(PETSC_COMM_WORLD)

237: /*MC
238:   PETSC_VIEWER_STDOUT_SELF  - same as PETSC_VIEWER_STDOUT_(PETSC_COMM_SELF)

240:   Level: beginner
241: M*/
242: #define PETSC_VIEWER_STDOUT_SELF  PETSC_VIEWER_STDOUT_(PETSC_COMM_SELF)

244: /*MC
245:   PETSC_VIEWER_DRAW_WORLD  - same as PETSC_VIEWER_DRAW_(PETSC_COMM_WORLD)

247:   Level: intermediate
248: M*/
249: #define PETSC_VIEWER_DRAW_WORLD   PETSC_VIEWER_DRAW_(PETSC_COMM_WORLD)

251: /*MC
252:   PETSC_VIEWER_DRAW_SELF  - same as PETSC_VIEWER_DRAW_(PETSC_COMM_SELF)

254:   Level: intermediate
255: M*/
256: #define PETSC_VIEWER_DRAW_SELF    PETSC_VIEWER_DRAW_(PETSC_COMM_SELF)

258: /*MC
259:   PETSC_VIEWER_SOCKET_WORLD  - same as PETSC_VIEWER_SOCKET_(PETSC_COMM_WORLD)

261:   Level: intermediate
262: M*/
263: #define PETSC_VIEWER_SOCKET_WORLD PETSC_VIEWER_SOCKET_(PETSC_COMM_WORLD)

265: /*MC
266:   PETSC_VIEWER_SOCKET_SELF  - same as PETSC_VIEWER_SOCKET_(PETSC_COMM_SELF)

268:   Level: intermediate
269: M*/
270: #define PETSC_VIEWER_SOCKET_SELF  PETSC_VIEWER_SOCKET_(PETSC_COMM_SELF)

272: /*MC
273:   PETSC_VIEWER_BINARY_WORLD  - same as PETSC_VIEWER_BINARY_(PETSC_COMM_WORLD)

275:   Level: intermediate
276: M*/
277: #define PETSC_VIEWER_BINARY_WORLD PETSC_VIEWER_BINARY_(PETSC_COMM_WORLD)

279: /*MC
280:   PETSC_VIEWER_BINARY_SELF  - same as PETSC_VIEWER_BINARY_(PETSC_COMM_SELF)

282:   Level: intermediate
283: M*/
284: #define PETSC_VIEWER_BINARY_SELF  PETSC_VIEWER_BINARY_(PETSC_COMM_SELF)

286: /*MC
287:   PETSC_VIEWER_MATLAB_WORLD  - same as PETSC_VIEWER_MATLAB_(PETSC_COMM_WORLD)

289:   Level: intermediate
290: M*/
291: #define PETSC_VIEWER_MATLAB_WORLD PETSC_VIEWER_MATLAB_(PETSC_COMM_WORLD)

293: /*MC
294:   PETSC_VIEWER_MATLAB_SELF  - same as PETSC_VIEWER_MATLAB_(PETSC_COMM_SELF)

296:   Level: intermediate
297: M*/
298: #define PETSC_VIEWER_MATLAB_SELF  PETSC_VIEWER_MATLAB_(PETSC_COMM_SELF)

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

302: PETSC_EXTERN PetscErrorCode PetscViewerFlowControlStart(PetscViewer,PetscInt*,PetscInt*);
303: PETSC_EXTERN PetscErrorCode PetscViewerFlowControlStepMaster(PetscViewer,PetscInt,PetscInt*,PetscInt);
304: PETSC_EXTERN PetscErrorCode PetscViewerFlowControlEndMaster(PetscViewer,PetscInt*);
305: PETSC_EXTERN PetscErrorCode PetscViewerFlowControlStepWorker(PetscViewer,PetscMPIInt,PetscInt*);
306: PETSC_EXTERN PetscErrorCode PetscViewerFlowControlEndWorker(PetscViewer,PetscInt*);

308: /*
309:    PetscViewer writes to MATLAB .mat file
310: */
311: PETSC_EXTERN PetscErrorCode PetscViewerMatlabPutArray(PetscViewer,int,int,const PetscScalar*,const char*);
312: PETSC_EXTERN PetscErrorCode PetscViewerMatlabGetArray(PetscViewer,int,int,PetscScalar*,const char*);
313: PETSC_EXTERN PetscErrorCode PetscViewerMatlabPutVariable(PetscViewer,const char*,void*);

315: #if defined(PETSC_HAVE_SAWS)
316: PETSC_EXTERN PetscErrorCode PetscObjectViewSAWs(PetscObject,PetscViewer);
317: #endif

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

322:    Level: intermediate

324:   Concepts: viewing

326: .seealso:  PetscViewerCreate(), PetscViewerSetType(), PetscViewerType, PetscViewer, PetscViewersCreate(),
327:            PetscViewersGetViewer()
328: S*/
329: typedef struct _n_PetscViewers* PetscViewers;
330: PETSC_EXTERN PetscErrorCode PetscViewersCreate(MPI_Comm,PetscViewers*);
331: PETSC_EXTERN PetscErrorCode PetscViewersDestroy(PetscViewers*);
332: PETSC_EXTERN PetscErrorCode PetscViewersGetViewer(PetscViewers,PetscInt,PetscViewer*);

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

338: #endif