xref: /petsc/include/petscviewer.h (revision e0877f539457ad1ce8178bc0750eac5ffa490a67)
1 /*
2      PetscViewers are objects where other objects can be looked at or stored.
3 */
4 
5 #if !defined(__PETSCVIEWER_H)
6 #define __PETSCVIEWER_H
7 
8 #include <petscsys.h>
9 #include <petscviewertypes.h>
10 
11 PETSC_EXTERN PetscClassId PETSC_VIEWER_CLASSID;
12 
13 /*J
14     PetscViewerType - String with the name of a PETSc PETScViewer
15 
16    Level: beginner
17 
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"
33 
34 PETSC_EXTERN PetscFunctionList PetscViewerList;
35 PETSC_EXTERN PetscErrorCode PetscViewerInitializePackage(void);
36 
37 PETSC_EXTERN PetscErrorCode PetscViewerRegister(const char[],PetscErrorCode (*)(PetscViewer));
38 
39 PETSC_EXTERN PetscErrorCode PetscViewerCreate(MPI_Comm,PetscViewer*);
40 PETSC_EXTERN PetscErrorCode PetscViewerSetFromOptions(PetscViewer);
41 PETSC_EXTERN PetscErrorCode PetscViewerASCIIOpenWithFILE(MPI_Comm,FILE*,PetscViewer*);
42 
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
55 
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*);
64 
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*);
70 
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);}
74 
75 PETSC_EXTERN PetscErrorCode PetscViewerSetOptionsPrefix(PetscViewer,const char[]);
76 PETSC_EXTERN PetscErrorCode PetscViewerAppendOptionsPrefix(PetscViewer,const char[]);
77 PETSC_EXTERN PetscErrorCode PetscViewerGetOptionsPrefix(PetscViewer,const char*[]);
78 
79 /*E
80     PetscViewerFormat - Way a viewer presents the object
81 
82    Level: beginner
83 
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.
86 
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[];
122 
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);
128 
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 *);
132 
133 /*
134    Operations explicit to a particular class of viewers
135 */
136 
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 PetscViewerRead(PetscViewer,void*,PetscInt,PetscInt*,PetscDataType);
141 PETSC_EXTERN PetscErrorCode PetscViewerASCIIPrintf(PetscViewer,const char[],...);
142 PETSC_EXTERN PetscErrorCode PetscViewerASCIISynchronizedPrintf(PetscViewer,const char[],...);
143 PETSC_EXTERN PetscErrorCode PetscViewerASCIIPushSynchronized(PetscViewer);
144 PETSC_EXTERN PetscErrorCode PetscViewerASCIIPopSynchronized(PetscViewer);
145 PETSC_EXTERN PetscErrorCode PetscViewerASCIIPushTab(PetscViewer);
146 PETSC_EXTERN PetscErrorCode PetscViewerASCIIPopTab(PetscViewer);
147 PETSC_EXTERN PetscErrorCode PetscViewerASCIIUseTabs(PetscViewer,PetscBool );
148 PETSC_EXTERN PetscErrorCode PetscViewerASCIISetTab(PetscViewer,PetscInt);
149 PETSC_EXTERN PetscErrorCode PetscViewerASCIIGetTab(PetscViewer,PetscInt*);
150 PETSC_EXTERN PetscErrorCode PetscViewerASCIIAddTab(PetscViewer,PetscInt);
151 PETSC_EXTERN PetscErrorCode PetscViewerASCIISubtractTab(PetscViewer,PetscInt);
152 PETSC_EXTERN PetscErrorCode PetscViewerASCIIRead(PetscViewer,void *,PetscInt,PetscInt*,PetscDataType);
153 PETSC_EXTERN PetscErrorCode PetscViewerBinaryGetDescriptor(PetscViewer,int*);
154 PETSC_EXTERN PetscErrorCode PetscViewerBinaryGetInfoPointer(PetscViewer,FILE **);
155 PETSC_EXTERN PetscErrorCode PetscViewerBinaryRead(PetscViewer,void*,PetscInt,PetscInt*,PetscDataType);
156 PETSC_EXTERN PetscErrorCode PetscViewerBinaryWrite(PetscViewer,void*,PetscInt,PetscDataType,PetscBool );
157 PETSC_EXTERN PetscErrorCode PetscViewerStringSPrintf(PetscViewer,const char[],...);
158 PETSC_EXTERN PetscErrorCode PetscViewerStringSetString(PetscViewer,char[],PetscInt);
159 PETSC_EXTERN PetscErrorCode PetscViewerDrawClear(PetscViewer);
160 PETSC_EXTERN PetscErrorCode PetscViewerDrawSetHold(PetscViewer,PetscBool);
161 PETSC_EXTERN PetscErrorCode PetscViewerDrawGetHold(PetscViewer,PetscBool*);
162 PETSC_EXTERN PetscErrorCode PetscViewerDrawSetPause(PetscViewer,PetscReal);
163 PETSC_EXTERN PetscErrorCode PetscViewerDrawGetPause(PetscViewer,PetscReal*);
164 PETSC_EXTERN PetscErrorCode PetscViewerDrawSetInfo(PetscViewer,const char[],const char[],int,int,int,int);
165 PETSC_EXTERN PetscErrorCode PetscViewerDrawResize(PetscViewer,int,int);
166 PETSC_EXTERN PetscErrorCode PetscViewerDrawSetBounds(PetscViewer,PetscInt,const PetscReal*);
167 PETSC_EXTERN PetscErrorCode PetscViewerDrawGetBounds(PetscViewer,PetscInt*,const PetscReal**);
168 PETSC_EXTERN PetscErrorCode PetscViewerSocketSetConnection(PetscViewer,const char[],int);
169 PETSC_EXTERN PetscErrorCode PetscViewerBinarySkipInfo(PetscViewer);
170 PETSC_EXTERN PetscErrorCode PetscViewerBinarySetSkipInfo(PetscViewer,PetscBool);
171 PETSC_EXTERN PetscErrorCode PetscViewerBinaryGetSkipInfo(PetscViewer,PetscBool*);
172 PETSC_EXTERN PetscErrorCode PetscViewerBinarySetSkipOptions(PetscViewer,PetscBool );
173 PETSC_EXTERN PetscErrorCode PetscViewerBinaryGetSkipOptions(PetscViewer,PetscBool *);
174 PETSC_EXTERN PetscErrorCode PetscViewerBinarySetSkipHeader(PetscViewer,PetscBool);
175 PETSC_EXTERN PetscErrorCode PetscViewerBinaryGetSkipHeader(PetscViewer,PetscBool*);
176 PETSC_EXTERN PetscErrorCode PetscViewerBinaryReadStringArray(PetscViewer,char***);
177 PETSC_EXTERN PetscErrorCode PetscViewerBinaryWriteStringArray(PetscViewer,char**);
178 
179 PETSC_EXTERN PetscErrorCode PetscViewerFileSetName(PetscViewer,const char[]);
180 PETSC_EXTERN PetscErrorCode PetscViewerFileGetName(PetscViewer,const char**);
181 
182 PETSC_EXTERN PetscErrorCode PetscViewerVUGetPointer(PetscViewer, FILE**);
183 PETSC_EXTERN PetscErrorCode PetscViewerVUSetVecSeen(PetscViewer, PetscBool );
184 PETSC_EXTERN PetscErrorCode PetscViewerVUGetVecSeen(PetscViewer, PetscBool  *);
185 PETSC_EXTERN PetscErrorCode PetscViewerVUPrintDeferred(PetscViewer, const char [], ...);
186 PETSC_EXTERN PetscErrorCode PetscViewerVUFlushDeferred(PetscViewer);
187 
188 PETSC_EXTERN PetscErrorCode PetscViewerMathematicaInitializePackage(void);
189 PETSC_EXTERN PetscErrorCode PetscViewerMathematicaFinalizePackage(void);
190 PETSC_EXTERN PetscErrorCode PetscViewerMathematicaGetName(PetscViewer, const char **);
191 PETSC_EXTERN PetscErrorCode PetscViewerMathematicaSetName(PetscViewer, const char []);
192 PETSC_EXTERN PetscErrorCode PetscViewerMathematicaClearName(PetscViewer);
193 PETSC_EXTERN PetscErrorCode PetscViewerMathematicaSkipPackets(PetscViewer, int);
194 
195 PETSC_EXTERN PetscErrorCode PetscViewerSiloGetName(PetscViewer, char **);
196 PETSC_EXTERN PetscErrorCode PetscViewerSiloSetName(PetscViewer, const char []);
197 PETSC_EXTERN PetscErrorCode PetscViewerSiloClearName(PetscViewer);
198 PETSC_EXTERN PetscErrorCode PetscViewerSiloGetMeshName(PetscViewer, char **);
199 PETSC_EXTERN PetscErrorCode PetscViewerSiloSetMeshName(PetscViewer, const char []);
200 PETSC_EXTERN PetscErrorCode PetscViewerSiloClearMeshName(PetscViewer);
201 
202 PETSC_EXTERN PetscErrorCode PetscViewerNetcdfOpen(MPI_Comm,const char[],PetscFileMode,PetscViewer*);
203 PETSC_EXTERN PetscErrorCode PetscViewerNetcdfGetID(PetscViewer, int *);
204 
205 typedef enum {PETSC_VTK_POINT_FIELD, PETSC_VTK_POINT_VECTOR_FIELD, PETSC_VTK_CELL_FIELD, PETSC_VTK_CELL_VECTOR_FIELD} PetscViewerVTKFieldType;
206 PETSC_EXTERN PetscErrorCode PetscViewerVTKAddField(PetscViewer,PetscObject,PetscErrorCode (*PetscViewerVTKWriteFunction)(PetscObject,PetscViewer),PetscViewerVTKFieldType,PetscObject);
207 PETSC_EXTERN PetscErrorCode PetscViewerVTKOpen(MPI_Comm,const char[],PetscFileMode,PetscViewer*);
208 
209 /*
210      These are all the default viewers that do not have to be explicitly opened
211 */
212 PETSC_EXTERN PetscViewer    PETSC_VIEWER_STDOUT_(MPI_Comm);
213 PETSC_EXTERN PetscErrorCode PetscViewerASCIIGetStdout(MPI_Comm,PetscViewer*);
214 PETSC_EXTERN PetscViewer    PETSC_VIEWER_STDERR_(MPI_Comm);
215 PETSC_EXTERN PetscErrorCode PetscViewerASCIIGetStderr(MPI_Comm,PetscViewer*);
216 PETSC_EXTERN PetscViewer    PETSC_VIEWER_DRAW_(MPI_Comm);
217 PETSC_EXTERN PetscViewer    PETSC_VIEWER_SOCKET_(MPI_Comm);
218 PETSC_EXTERN PetscViewer    PETSC_VIEWER_BINARY_(MPI_Comm);
219 PETSC_EXTERN PetscViewer    PETSC_VIEWER_MATLAB_(MPI_Comm);
220 PETSC_EXTERN PetscViewer    PETSC_VIEWER_HDF5_(MPI_Comm);
221 PETSC_EXTERN PetscViewer   PETSC_VIEWER_MATHEMATICA_WORLD_PRIVATE;
222 
223 #define PETSC_VIEWER_STDERR_SELF  PETSC_VIEWER_STDERR_(PETSC_COMM_SELF)
224 #define PETSC_VIEWER_STDERR_WORLD PETSC_VIEWER_STDERR_(PETSC_COMM_WORLD)
225 
226 /*MC
227   PETSC_VIEWER_STDOUT_WORLD  - same as PETSC_VIEWER_STDOUT_(PETSC_COMM_WORLD)
228 
229   Level: beginner
230 M*/
231 #define PETSC_VIEWER_STDOUT_WORLD PETSC_VIEWER_STDOUT_(PETSC_COMM_WORLD)
232 
233 /*MC
234   PETSC_VIEWER_STDOUT_SELF  - same as PETSC_VIEWER_STDOUT_(PETSC_COMM_SELF)
235 
236   Level: beginner
237 M*/
238 #define PETSC_VIEWER_STDOUT_SELF  PETSC_VIEWER_STDOUT_(PETSC_COMM_SELF)
239 
240 /*MC
241   PETSC_VIEWER_DRAW_WORLD  - same as PETSC_VIEWER_DRAW_(PETSC_COMM_WORLD)
242 
243   Level: intermediate
244 M*/
245 #define PETSC_VIEWER_DRAW_WORLD   PETSC_VIEWER_DRAW_(PETSC_COMM_WORLD)
246 
247 /*MC
248   PETSC_VIEWER_DRAW_SELF  - same as PETSC_VIEWER_DRAW_(PETSC_COMM_SELF)
249 
250   Level: intermediate
251 M*/
252 #define PETSC_VIEWER_DRAW_SELF    PETSC_VIEWER_DRAW_(PETSC_COMM_SELF)
253 
254 /*MC
255   PETSC_VIEWER_SOCKET_WORLD  - same as PETSC_VIEWER_SOCKET_(PETSC_COMM_WORLD)
256 
257   Level: intermediate
258 M*/
259 #define PETSC_VIEWER_SOCKET_WORLD PETSC_VIEWER_SOCKET_(PETSC_COMM_WORLD)
260 
261 /*MC
262   PETSC_VIEWER_SOCKET_SELF  - same as PETSC_VIEWER_SOCKET_(PETSC_COMM_SELF)
263 
264   Level: intermediate
265 M*/
266 #define PETSC_VIEWER_SOCKET_SELF  PETSC_VIEWER_SOCKET_(PETSC_COMM_SELF)
267 
268 /*MC
269   PETSC_VIEWER_BINARY_WORLD  - same as PETSC_VIEWER_BINARY_(PETSC_COMM_WORLD)
270 
271   Level: intermediate
272 M*/
273 #define PETSC_VIEWER_BINARY_WORLD PETSC_VIEWER_BINARY_(PETSC_COMM_WORLD)
274 
275 /*MC
276   PETSC_VIEWER_BINARY_SELF  - same as PETSC_VIEWER_BINARY_(PETSC_COMM_SELF)
277 
278   Level: intermediate
279 M*/
280 #define PETSC_VIEWER_BINARY_SELF  PETSC_VIEWER_BINARY_(PETSC_COMM_SELF)
281 
282 /*MC
283   PETSC_VIEWER_MATLAB_WORLD  - same as PETSC_VIEWER_MATLAB_(PETSC_COMM_WORLD)
284 
285   Level: intermediate
286 M*/
287 #define PETSC_VIEWER_MATLAB_WORLD PETSC_VIEWER_MATLAB_(PETSC_COMM_WORLD)
288 
289 /*MC
290   PETSC_VIEWER_MATLAB_SELF  - same as PETSC_VIEWER_MATLAB_(PETSC_COMM_SELF)
291 
292   Level: intermediate
293 M*/
294 #define PETSC_VIEWER_MATLAB_SELF  PETSC_VIEWER_MATLAB_(PETSC_COMM_SELF)
295 
296 #define PETSC_VIEWER_MATHEMATICA_WORLD (PetscViewerInitializeMathematicaWorld_Private(),PETSC_VIEWER_MATHEMATICA_WORLD_PRIVATE)
297 
298 PETSC_EXTERN PetscErrorCode PetscViewerFlowControlStart(PetscViewer,PetscInt*,PetscInt*);
299 PETSC_EXTERN PetscErrorCode PetscViewerFlowControlStepMaster(PetscViewer,PetscInt,PetscInt*,PetscInt);
300 PETSC_EXTERN PetscErrorCode PetscViewerFlowControlEndMaster(PetscViewer,PetscInt*);
301 PETSC_EXTERN PetscErrorCode PetscViewerFlowControlStepWorker(PetscViewer,PetscMPIInt,PetscInt*);
302 PETSC_EXTERN PetscErrorCode PetscViewerFlowControlEndWorker(PetscViewer,PetscInt*);
303 
304 /*
305    PetscViewer writes to MATLAB .mat file
306 */
307 PETSC_EXTERN PetscErrorCode PetscViewerMatlabPutArray(PetscViewer,int,int,const PetscScalar*,const char*);
308 PETSC_EXTERN PetscErrorCode PetscViewerMatlabGetArray(PetscViewer,int,int,PetscScalar*,const char*);
309 PETSC_EXTERN PetscErrorCode PetscViewerMatlabPutVariable(PetscViewer,const char*,void*);
310 
311 #if defined(PETSC_HAVE_SAWS)
312 PETSC_EXTERN PetscErrorCode PetscObjectViewSAWs(PetscObject,PetscViewer);
313 #endif
314 
315 /*S
316      PetscViewers - Abstract collection of PetscViewers. It is just an expandable array of viewers.
317 
318    Level: intermediate
319 
320   Concepts: viewing
321 
322 .seealso:  PetscViewerCreate(), PetscViewerSetType(), PetscViewerType, PetscViewer, PetscViewersCreate(),
323            PetscViewersGetViewer()
324 S*/
325 typedef struct _n_PetscViewers* PetscViewers;
326 PETSC_EXTERN PetscErrorCode PetscViewersCreate(MPI_Comm,PetscViewers*);
327 PETSC_EXTERN PetscErrorCode PetscViewersDestroy(PetscViewers*);
328 PETSC_EXTERN PetscErrorCode PetscViewersGetViewer(PetscViewers,PetscInt,PetscViewer*);
329 
330 /* Reset __FUNCT__ in case the user does not define it themselves */
331 #undef __FUNCT__
332 #define __FUNCT__ "User provided function"
333 
334 #endif
335