Actual source code: petscviewer.h
petsc-3.5.4 2015-05-23
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[],size_t,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_HDF5_VIZ,
121: PETSC_VIEWER_NOFORMAT
122: } PetscViewerFormat;
123: PETSC_EXTERN const char *const PetscViewerFormats[];
125: PETSC_EXTERN PetscErrorCode PetscViewerSetFormat(PetscViewer,PetscViewerFormat);
126: PETSC_EXTERN PetscErrorCode PetscViewerPushFormat(PetscViewer,PetscViewerFormat);
127: PETSC_EXTERN PetscErrorCode PetscViewerPopFormat(PetscViewer);
128: PETSC_EXTERN PetscErrorCode PetscViewerGetFormat(PetscViewer,PetscViewerFormat*);
129: PETSC_EXTERN PetscErrorCode PetscViewerFlush(PetscViewer);
131: PETSC_EXTERN PetscErrorCode PetscOptionsGetViewer(MPI_Comm,const char[],const char[],PetscViewer*,PetscViewerFormat*,PetscBool*);
132: PETSC_EXTERN PetscErrorCode PetscOptionsViewer(const char[],const char[],const char[],PetscViewer*,PetscViewerFormat *,PetscBool *);
134: /*
135: Operations explicit to a particular class of viewers
136: */
138: PETSC_EXTERN PetscErrorCode PetscViewerASCIIGetPointer(PetscViewer,FILE**);
139: PETSC_EXTERN PetscErrorCode PetscViewerFileGetMode(PetscViewer,PetscFileMode*);
140: PETSC_EXTERN PetscErrorCode PetscViewerFileSetMode(PetscViewer,PetscFileMode);
141: PETSC_EXTERN PetscErrorCode PetscViewerASCIIPrintf(PetscViewer,const char[],...);
142: PETSC_EXTERN PetscErrorCode PetscViewerASCIISynchronizedPrintf(PetscViewer,const char[],...);
143: PETSC_EXTERN PetscErrorCode PetscViewerASCIISynchronizedAllow(PetscViewer,PetscBool);
144: PETSC_EXTERN PetscErrorCode PetscViewerASCIIPushTab(PetscViewer);
145: PETSC_EXTERN PetscErrorCode PetscViewerASCIIPopTab(PetscViewer);
146: PETSC_EXTERN PetscErrorCode PetscViewerASCIIUseTabs(PetscViewer,PetscBool );
147: PETSC_EXTERN PetscErrorCode PetscViewerASCIISetTab(PetscViewer,PetscInt);
148: PETSC_EXTERN PetscErrorCode PetscViewerASCIIGetTab(PetscViewer,PetscInt*);
149: PETSC_EXTERN PetscErrorCode PetscViewerASCIIAddTab(PetscViewer,PetscInt);
150: PETSC_EXTERN PetscErrorCode PetscViewerASCIISubtractTab(PetscViewer,PetscInt);
151: PETSC_EXTERN PetscErrorCode PetscViewerBinaryGetDescriptor(PetscViewer,int*);
152: PETSC_EXTERN PetscErrorCode PetscViewerBinaryGetInfoPointer(PetscViewer,FILE **);
153: PETSC_EXTERN PetscErrorCode PetscViewerBinaryRead(PetscViewer,void*,PetscInt,PetscDataType);
154: PETSC_EXTERN PetscErrorCode PetscViewerBinaryWrite(PetscViewer,void*,PetscInt,PetscDataType,PetscBool );
155: PETSC_EXTERN PetscErrorCode PetscViewerStringSPrintf(PetscViewer,const char[],...);
156: PETSC_EXTERN PetscErrorCode PetscViewerStringSetString(PetscViewer,char[],PetscInt);
157: PETSC_EXTERN PetscErrorCode PetscViewerDrawClear(PetscViewer);
158: PETSC_EXTERN PetscErrorCode PetscViewerDrawSetHold(PetscViewer,PetscBool);
159: PETSC_EXTERN PetscErrorCode PetscViewerDrawGetHold(PetscViewer,PetscBool*);
160: PETSC_EXTERN PetscErrorCode PetscViewerDrawSetPause(PetscViewer,PetscReal);
161: PETSC_EXTERN PetscErrorCode PetscViewerDrawGetPause(PetscViewer,PetscReal*);
162: PETSC_EXTERN PetscErrorCode PetscViewerDrawSetInfo(PetscViewer,const char[],const char[],int,int,int,int);
163: PETSC_EXTERN PetscErrorCode PetscViewerDrawResize(PetscViewer,int,int);
164: PETSC_EXTERN PetscErrorCode PetscViewerDrawSetBounds(PetscViewer,PetscInt,const PetscReal*);
165: PETSC_EXTERN PetscErrorCode PetscViewerDrawGetBounds(PetscViewer,PetscInt*,const PetscReal**);
166: PETSC_EXTERN PetscErrorCode PetscViewerSocketSetConnection(PetscViewer,const char[],int);
167: PETSC_EXTERN PetscErrorCode PetscViewerBinarySkipInfo(PetscViewer);
168: PETSC_EXTERN PetscErrorCode PetscViewerBinarySetSkipOptions(PetscViewer,PetscBool );
169: PETSC_EXTERN PetscErrorCode PetscViewerBinaryGetSkipOptions(PetscViewer,PetscBool *);
170: PETSC_EXTERN PetscErrorCode PetscViewerBinarySetSkipHeader(PetscViewer,PetscBool);
171: PETSC_EXTERN PetscErrorCode PetscViewerBinaryGetSkipHeader(PetscViewer,PetscBool*);
172: PETSC_EXTERN PetscErrorCode PetscViewerBinaryReadStringArray(PetscViewer,char***);
173: PETSC_EXTERN PetscErrorCode PetscViewerBinaryWriteStringArray(PetscViewer,char**);
175: PETSC_EXTERN PetscErrorCode PetscViewerFileSetName(PetscViewer,const char[]);
176: PETSC_EXTERN PetscErrorCode PetscViewerFileGetName(PetscViewer,const char**);
178: PETSC_EXTERN PetscErrorCode PetscViewerVUGetPointer(PetscViewer, FILE**);
179: PETSC_EXTERN PetscErrorCode PetscViewerVUSetVecSeen(PetscViewer, PetscBool );
180: PETSC_EXTERN PetscErrorCode PetscViewerVUGetVecSeen(PetscViewer, PetscBool *);
181: PETSC_EXTERN PetscErrorCode PetscViewerVUPrintDeferred(PetscViewer, const char [], ...);
182: PETSC_EXTERN PetscErrorCode PetscViewerVUFlushDeferred(PetscViewer);
184: PETSC_EXTERN PetscErrorCode PetscViewerMathematicaInitializePackage(void);
185: PETSC_EXTERN PetscErrorCode PetscViewerMathematicaFinalizePackage(void);
186: PETSC_EXTERN PetscErrorCode PetscViewerMathematicaGetName(PetscViewer, const char **);
187: PETSC_EXTERN PetscErrorCode PetscViewerMathematicaSetName(PetscViewer, const char []);
188: PETSC_EXTERN PetscErrorCode PetscViewerMathematicaClearName(PetscViewer);
189: PETSC_EXTERN PetscErrorCode PetscViewerMathematicaSkipPackets(PetscViewer, int);
191: PETSC_EXTERN PetscErrorCode PetscViewerSiloGetName(PetscViewer, char **);
192: PETSC_EXTERN PetscErrorCode PetscViewerSiloSetName(PetscViewer, const char []);
193: PETSC_EXTERN PetscErrorCode PetscViewerSiloClearName(PetscViewer);
194: PETSC_EXTERN PetscErrorCode PetscViewerSiloGetMeshName(PetscViewer, char **);
195: PETSC_EXTERN PetscErrorCode PetscViewerSiloSetMeshName(PetscViewer, const char []);
196: PETSC_EXTERN PetscErrorCode PetscViewerSiloClearMeshName(PetscViewer);
198: PETSC_EXTERN PetscErrorCode PetscViewerNetcdfOpen(MPI_Comm,const char[],PetscFileMode,PetscViewer*);
199: PETSC_EXTERN PetscErrorCode PetscViewerNetcdfGetID(PetscViewer, int *);
201: typedef enum {PETSC_VTK_POINT_FIELD, PETSC_VTK_POINT_VECTOR_FIELD, PETSC_VTK_CELL_FIELD, PETSC_VTK_CELL_VECTOR_FIELD} PetscViewerVTKFieldType;
202: PETSC_EXTERN PetscErrorCode PetscViewerVTKAddField(PetscViewer,PetscObject,PetscErrorCode (*PetscViewerVTKWriteFunction)(PetscObject,PetscViewer),PetscViewerVTKFieldType,PetscObject);
203: PETSC_EXTERN PetscErrorCode PetscViewerVTKOpen(MPI_Comm,const char[],PetscFileMode,PetscViewer*);
205: /*
206: These are all the default viewers that do not have to be explicitly opened
207: */
208: PETSC_EXTERN PetscViewer PETSC_VIEWER_STDOUT_(MPI_Comm);
209: PETSC_EXTERN PetscErrorCode PetscViewerASCIIGetStdout(MPI_Comm,PetscViewer*);
210: PETSC_EXTERN PetscViewer PETSC_VIEWER_STDERR_(MPI_Comm);
211: PETSC_EXTERN PetscErrorCode PetscViewerASCIIGetStderr(MPI_Comm,PetscViewer*);
212: PETSC_EXTERN PetscViewer PETSC_VIEWER_DRAW_(MPI_Comm);
213: PETSC_EXTERN PetscViewer PETSC_VIEWER_SOCKET_(MPI_Comm);
214: PETSC_EXTERN PetscViewer PETSC_VIEWER_BINARY_(MPI_Comm);
215: PETSC_EXTERN PetscViewer PETSC_VIEWER_MATLAB_(MPI_Comm);
216: PETSC_EXTERN PetscViewer PETSC_VIEWER_HDF5_(MPI_Comm);
217: PETSC_EXTERN PetscViewer PETSC_VIEWER_MATHEMATICA_WORLD_PRIVATE;
219: #define PETSC_VIEWER_STDERR_SELF PETSC_VIEWER_STDERR_(PETSC_COMM_SELF)
220: #define PETSC_VIEWER_STDERR_WORLD PETSC_VIEWER_STDERR_(PETSC_COMM_WORLD)
222: /*MC
223: PETSC_VIEWER_STDOUT_WORLD - same as PETSC_VIEWER_STDOUT_(PETSC_COMM_WORLD)
225: Level: beginner
226: M*/
227: #define PETSC_VIEWER_STDOUT_WORLD PETSC_VIEWER_STDOUT_(PETSC_COMM_WORLD)
229: /*MC
230: PETSC_VIEWER_STDOUT_SELF - same as PETSC_VIEWER_STDOUT_(PETSC_COMM_SELF)
232: Level: beginner
233: M*/
234: #define PETSC_VIEWER_STDOUT_SELF PETSC_VIEWER_STDOUT_(PETSC_COMM_SELF)
236: /*MC
237: PETSC_VIEWER_DRAW_WORLD - same as PETSC_VIEWER_DRAW_(PETSC_COMM_WORLD)
239: Level: intermediate
240: M*/
241: #define PETSC_VIEWER_DRAW_WORLD PETSC_VIEWER_DRAW_(PETSC_COMM_WORLD)
243: /*MC
244: PETSC_VIEWER_DRAW_SELF - same as PETSC_VIEWER_DRAW_(PETSC_COMM_SELF)
246: Level: intermediate
247: M*/
248: #define PETSC_VIEWER_DRAW_SELF PETSC_VIEWER_DRAW_(PETSC_COMM_SELF)
250: /*MC
251: PETSC_VIEWER_SOCKET_WORLD - same as PETSC_VIEWER_SOCKET_(PETSC_COMM_WORLD)
253: Level: intermediate
254: M*/
255: #define PETSC_VIEWER_SOCKET_WORLD PETSC_VIEWER_SOCKET_(PETSC_COMM_WORLD)
257: /*MC
258: PETSC_VIEWER_SOCKET_SELF - same as PETSC_VIEWER_SOCKET_(PETSC_COMM_SELF)
260: Level: intermediate
261: M*/
262: #define PETSC_VIEWER_SOCKET_SELF PETSC_VIEWER_SOCKET_(PETSC_COMM_SELF)
264: /*MC
265: PETSC_VIEWER_BINARY_WORLD - same as PETSC_VIEWER_BINARY_(PETSC_COMM_WORLD)
267: Level: intermediate
268: M*/
269: #define PETSC_VIEWER_BINARY_WORLD PETSC_VIEWER_BINARY_(PETSC_COMM_WORLD)
271: /*MC
272: PETSC_VIEWER_BINARY_SELF - same as PETSC_VIEWER_BINARY_(PETSC_COMM_SELF)
274: Level: intermediate
275: M*/
276: #define PETSC_VIEWER_BINARY_SELF PETSC_VIEWER_BINARY_(PETSC_COMM_SELF)
278: /*MC
279: PETSC_VIEWER_MATLAB_WORLD - same as PETSC_VIEWER_MATLAB_(PETSC_COMM_WORLD)
281: Level: intermediate
282: M*/
283: #define PETSC_VIEWER_MATLAB_WORLD PETSC_VIEWER_MATLAB_(PETSC_COMM_WORLD)
285: /*MC
286: PETSC_VIEWER_MATLAB_SELF - same as PETSC_VIEWER_MATLAB_(PETSC_COMM_SELF)
288: Level: intermediate
289: M*/
290: #define PETSC_VIEWER_MATLAB_SELF PETSC_VIEWER_MATLAB_(PETSC_COMM_SELF)
292: #define PETSC_VIEWER_MATHEMATICA_WORLD (PetscViewerInitializeMathematicaWorld_Private(),PETSC_VIEWER_MATHEMATICA_WORLD_PRIVATE)
296: PETSC_STATIC_INLINE PetscErrorCode PetscViewerFlowControlStart(PetscViewer viewer,PetscInt *mcnt,PetscInt *cnt)
297: {
300: PetscViewerBinaryGetFlowControl(viewer,mcnt);
301: PetscViewerBinaryGetFlowControl(viewer,cnt);
302: return(0);
303: }
307: PETSC_STATIC_INLINE PetscErrorCode PetscViewerFlowControlStepMaster(PetscViewer viewer,PetscInt i,PetscInt *mcnt,PetscInt cnt)
308: {
310: MPI_Comm comm;
313: PetscObjectGetComm((PetscObject)viewer,&comm);
314: if (i >= *mcnt) {
315: *mcnt += cnt;
316: MPI_Bcast(mcnt,1,MPIU_INT,0,comm);
317: }
318: return(0);
319: }
323: PETSC_STATIC_INLINE PetscErrorCode PetscViewerFlowControlEndMaster(PetscViewer viewer,PetscInt *mcnt)
324: {
326: MPI_Comm comm;
328: PetscObjectGetComm((PetscObject)viewer,&comm);
329: *mcnt = 0;
330: MPI_Bcast(mcnt,1,MPIU_INT,0,comm);
331: return(0);
332: }
336: PETSC_STATIC_INLINE PetscErrorCode PetscViewerFlowControlStepWorker(PetscViewer viewer,PetscMPIInt rank,PetscInt *mcnt)
337: {
339: MPI_Comm comm;
341: PetscObjectGetComm((PetscObject)viewer,&comm);
342: while (PETSC_TRUE) {
343: if (rank < *mcnt) break;
344: MPI_Bcast(mcnt,1,MPIU_INT,0,comm);
345: }
346: return(0);
347: }
351: PETSC_STATIC_INLINE PetscErrorCode PetscViewerFlowControlEndWorker(PetscViewer viewer,PetscInt *mcnt)
352: {
354: MPI_Comm comm;
356: PetscObjectGetComm((PetscObject)viewer,&comm);
357: while (PETSC_TRUE) {
358: MPI_Bcast(mcnt,1,MPIU_INT,0,comm);
359: if (!*mcnt) break;
360: }
361: return(0);
362: }
364: /*
365: PetscViewer writes to MATLAB .mat file
366: */
367: PETSC_EXTERN PetscErrorCode PetscViewerMatlabPutArray(PetscViewer,int,int,const PetscScalar*,const char*);
368: PETSC_EXTERN PetscErrorCode PetscViewerMatlabGetArray(PetscViewer,int,int,PetscScalar*,const char*);
369: PETSC_EXTERN PetscErrorCode PetscViewerMatlabPutVariable(PetscViewer,const char*,void*);
371: #if defined(PETSC_HAVE_SAWS)
372: PETSC_EXTERN PetscErrorCode PetscObjectViewSAWs(PetscObject,PetscViewer);
373: #endif
375: /*S
376: PetscViewers - Abstract collection of PetscViewers. It is just an expandable array of viewers.
378: Level: intermediate
380: Concepts: viewing
382: .seealso: PetscViewerCreate(), PetscViewerSetType(), PetscViewerType, PetscViewer, PetscViewersCreate(),
383: PetscViewersGetViewer()
384: S*/
385: typedef struct _n_PetscViewers* PetscViewers;
386: PETSC_EXTERN PetscErrorCode PetscViewersCreate(MPI_Comm,PetscViewers*);
387: PETSC_EXTERN PetscErrorCode PetscViewersDestroy(PetscViewers*);
388: PETSC_EXTERN PetscErrorCode PetscViewersGetViewer(PetscViewers,PetscInt,PetscViewer*);
390: /* Reset __FUNCT__ in case the user does not define it themselves */
394: #endif