Actual source code: petscviewer.h

  1: /*
  2:      PetscViewers are objects where other objects can be looked at or stored.
  3: */


 10: #endif

 12: /*S
 13:      PetscViewer - Abstract PETSc object that helps view (in ASCII, binary, graphically etc)
 14:          other PETSc objects

 16:    Level: beginner

 18:   Concepts: viewing

 20: .seealso:  PetscViewerCreate(), PetscViewerSetType(), PetscViewerType
 21: S*/
 22: typedef struct _p_PetscViewer* PetscViewer;

 25: }
 26: #endif

 28:  #include petsc.h

 32: #endif


 37: }
 38: #endif


 41: /*
 42:     petsc.h must be included AFTER the definition of PetscViewer for ADIC to 
 43:    process correctly.
 44: */
 46: /*E
 47:     PetscViewerType - String with the name of a PETSc PETScViewer

 49:    Level: beginner

 51: .seealso: PetscViewerSetType(), PetscViewer
 52: E*/
 53: #define PetscViewerType const char*
 54: #define PETSC_VIEWER_SOCKET       "socket"
 55: #define PETSC_VIEWER_ASCII        "ascii"
 56: #define PETSC_VIEWER_BINARY       "binary"
 57: #define PETSC_VIEWER_STRING       "string"
 58: #define PETSC_VIEWER_DRAW         "draw"
 59: #define PETSC_VIEWER_VU           "vu"
 60: #define PETSC_VIEWER_MATHEMATICA  "mathematica"
 61: #define PETSC_VIEWER_SILO         "silo"
 62: #define PETSC_VIEWER_NETCDF       "netcdf"
 63: #define PETSC_VIEWER_HDF4         "hdf4"
 64: #define PETSC_VIEWER_MATLAB       "matlab"

 67: EXTERN PetscErrorCode PETSC_DLLEXPORT PetscViewerRegisterAll(const char *);
 68: EXTERN PetscErrorCode PETSC_DLLEXPORT PetscViewerRegisterDestroy(void);

 70: EXTERN PetscErrorCode PETSC_DLLEXPORT PetscViewerRegister(const char*,const char*,const char*,PetscErrorCode (*)(PetscViewer));

 72: /*MC
 73:    PetscViewerRegisterDynamic - Adds a method to the Krylov subspace solver package.

 75:    Synopsis:
 76:    PetscErrorCode PetscViewerRegisterDynamic(char *name_solver,char *path,char *name_create,PetscErrorCode (*routine_create)(PetscViewer))

 78:    Not Collective

 80:    Input Parameters:
 81: +  name_solver - name of a new user-defined solver
 82: .  path - path (either absolute or relative) the library containing this solver
 83: .  name_create - name of routine to create method context
 84: -  routine_create - routine to create method context

 86:    Level: developer

 88:    Notes:
 89:    PetscViewerRegisterDynamic() may be called multiple times to add several user-defined solvers.

 91:    If dynamic libraries are used, then the fourth input argument (routine_create)
 92:    is ignored.

 94:    Sample usage:
 95: .vb
 96:    PetscViewerRegisterDynamic("my_viewer_type",/home/username/my_lib/lib/libO/solaris/mylib.a,
 97:                "MyViewerCreate",MyViewerCreate);
 98: .ve

100:    Then, your solver can be chosen with the procedural interface via
101: $     PetscViewerSetType(ksp,"my_viewer_type")
102:    or at runtime via the option
103: $     -viewer_type my_viewer_type

105:   Concepts: registering^Viewers

107: .seealso: PetscViewerRegisterAll(), PetscViewerRegisterDestroy()
108: M*/
109: #if defined(PETSC_USE_DYNAMIC_LIBRARIES)
110: #define PetscViewerRegisterDynamic(a,b,c,d) PetscViewerRegister(a,b,c,0)
111: #else
112: #define PetscViewerRegisterDynamic(a,b,c,d) PetscViewerRegister(a,b,c,d)
113: #endif

115: EXTERN PetscErrorCode PETSC_DLLEXPORT PetscViewerCreate(MPI_Comm,PetscViewer*);
116: PetscPolymorphicSubroutine(PetscViewerCreate,(PetscViewer *v),(PETSC_COMM_SELF,v))
117: EXTERN PetscErrorCode PETSC_DLLEXPORT PetscViewerSetFromOptions(PetscViewer);

119: EXTERN PetscErrorCode PETSC_DLLEXPORT PetscViewerASCIIOpen(MPI_Comm,const char[],PetscViewer*);

121: /*E
122:   PetscViewerFileType - Indicates how the file should be opened for the viewer

124:   Level: beginner

126: .seealso: PetscViewerSetFileName(), PetscViewerSetFileType(), PetscViewerBinaryOpen(), PetscViewerASCIIOpen(),
127:           PetscViewerMatlabOpen()
128: E*/
129: typedef enum {PETSC_FILE_RDONLY,PETSC_FILE_WRONLY,PETSC_FILE_CREATE} PetscViewerFileType;

131: /*M
132:     PETSC_FILE_RDONLY - File is open to be read from only, not written to

134:     Level: beginner

136: .seealso: PetscViewerFileType, PETSC_FILE_WRONLY, PETSC_FILE_CREATE, PetscViewerSetFileName(), PetscViewerSetFileType(), 
137:           PetscViewerBinaryOpen(), PetscViewerASCIIOpen(), PetscViewerMatlabOpen()

139: M*/

141: /*M
142:     PETSC_FILE_WRONLY - File is open to be appended to.

144:     Level: beginner

146: .seealso: PetscViewerFileType, PETSC_FILE_RDONLY, PETSC_FILE_CREATE, PetscViewerSetFileName(), PetscViewerSetFileType(), 
147:           PetscViewerBinaryOpen(), PetscViewerASCIIOpen(), PetscViewerMatlabOpen()

149: M*/

151: /*M
152:     PETSC_FILE_CREATE - Create the file, or delete it and open an empty file if it already existed

154:     Level: beginner

156: .seealso: PetscViewerFileType, PETSC_FILE_RDONLY, PETSC_FILE_WRONLY, PetscViewerSetFileName(), PetscViewerSetFileType(), 
157:           PetscViewerBinaryOpen(), PetscViewerASCIIOpen(), PetscViewerMatlabOpen()

159: M*/

161: EXTERN PetscErrorCode PETSC_DLLEXPORT PetscViewerBinaryOpen(MPI_Comm,const char[],PetscViewerFileType,PetscViewer*);
162: EXTERN PetscErrorCode PETSC_DLLEXPORT PetscViewerSocketOpen(MPI_Comm,const char[],int,PetscViewer*);
163: EXTERN PetscErrorCode PETSC_DLLEXPORT PetscViewerStringOpen(MPI_Comm,char[],PetscInt,PetscViewer*);
164: EXTERN PetscErrorCode PETSC_DLLEXPORT PetscViewerDrawOpen(MPI_Comm,const char[],const char[],int,int,int,int,PetscViewer*);
165: EXTERN PetscErrorCode PETSC_DLLEXPORT PetscViewerMathematicaOpen(MPI_Comm, int, const char[], const char[], PetscViewer *);
166: EXTERN PetscErrorCode PETSC_DLLEXPORT PetscViewerSiloOpen(MPI_Comm, const char[], PetscViewer *);
167: EXTERN PetscErrorCode PETSC_DLLEXPORT PetscViewerMatlabOpen(MPI_Comm,const char[],PetscViewerFileType,PetscViewer*);

169: EXTERN PetscErrorCode PETSC_DLLEXPORT PetscViewerGetType(PetscViewer,PetscViewerType*);
170: EXTERN PetscErrorCode PETSC_DLLEXPORT PetscViewerSetType(PetscViewer,PetscViewerType);
171: EXTERN PetscErrorCode PETSC_DLLEXPORT PetscViewerDestroy(PetscViewer);
172: EXTERN PetscErrorCode PETSC_DLLEXPORT PetscViewerGetSingleton(PetscViewer,PetscViewer*);
173: EXTERN PetscErrorCode PETSC_DLLEXPORT PetscViewerRestoreSingleton(PetscViewer,PetscViewer*);

175: EXTERN PetscErrorCode PETSC_DLLEXPORT PetscViewerSetUp(PetscViewer);
176: EXTERN PetscErrorCode PETSC_DLLEXPORT PetscViewerView(PetscViewer,PetscViewer);

178: EXTERN PetscErrorCode PETSC_DLLEXPORT PetscViewerSetOptionsPrefix(PetscViewer,const char[]);
179: EXTERN PetscErrorCode PETSC_DLLEXPORT PetscViewerAppendOptionsPrefix(PetscViewer,const char[]);
180: EXTERN PetscErrorCode PETSC_DLLEXPORT PetscViewerGetOptionsPrefix(PetscViewer,const char*[]);

182: /*E
183:     PetscViewerFormat - Way a viewer presents the object

185:    Level: beginner

187: .seealso: PetscViewerSetFormat(), PetscViewer, PetscViewerType, PetscViewerPushFormat(), PetscViewerPopFormat()
188: E*/
189: typedef enum {
190:   PETSC_VIEWER_ASCII_DEFAULT,
191:   PETSC_VIEWER_ASCII_MATLAB,
192:   PETSC_VIEWER_ASCII_MATHEMATICA,
193:   PETSC_VIEWER_ASCII_IMPL,
194:   PETSC_VIEWER_ASCII_INFO,
195:   PETSC_VIEWER_ASCII_INFO_DETAIL,
196:   PETSC_VIEWER_ASCII_COMMON,
197:   PETSC_VIEWER_ASCII_SYMMODU,
198:   PETSC_VIEWER_ASCII_INDEX,
199:   PETSC_VIEWER_ASCII_DENSE,
200:   PETSC_VIEWER_BINARY_DEFAULT,
201:   PETSC_VIEWER_BINARY_NATIVE,
202:   PETSC_VIEWER_DRAW_BASIC,
203:   PETSC_VIEWER_DRAW_LG,
204:   PETSC_VIEWER_DRAW_CONTOUR,
205:   PETSC_VIEWER_DRAW_PORTS,
206:   PETSC_VIEWER_NATIVE,
207:   PETSC_VIEWER_NOFORMAT,
208:   PETSC_VIEWER_ASCII_FACTOR_INFO} PetscViewerFormat;

210: EXTERN PetscErrorCode PETSC_DLLEXPORT PetscViewerSetFormat(PetscViewer,PetscViewerFormat);
211: EXTERN PetscErrorCode PETSC_DLLEXPORT PetscViewerPushFormat(PetscViewer,PetscViewerFormat);
212: EXTERN PetscErrorCode PETSC_DLLEXPORT PetscViewerPopFormat(PetscViewer);
213: EXTERN PetscErrorCode PETSC_DLLEXPORT PetscViewerGetFormat(PetscViewer,PetscViewerFormat*);
214: EXTERN PetscErrorCode PETSC_DLLEXPORT PetscViewerFlush(PetscViewer);

216: /*
217:    Operations explicit to a particular class of viewers
218: */

220: /*E
221:   PetscViewerFormat - Access mode for a file.

223:   Level: beginner

225: .seealso: PetscViewerASCIISetMode()
226: E*/
227: typedef enum {FILE_MODE_READ, FILE_MODE_WRITE, FILE_MODE_APPEND, FILE_MODE_UPDATE, FILE_MODE_APPEND_UPDATE} PetscFileMode;

229: EXTERN PetscErrorCode PETSC_DLLEXPORT PetscViewerASCIIGetPointer(PetscViewer,FILE**);
230: EXTERN PetscErrorCode PETSC_DLLEXPORT PetscViewerASCIISetMode(PetscViewer,PetscFileMode);
231: EXTERN PetscErrorCode PETSC_DLLEXPORT PetscViewerASCIIPrintf(PetscViewer,const char[],...) PETSC_PRINTF_FORMAT_CHECK(2,3);
232: EXTERN PetscErrorCode PETSC_DLLEXPORT PetscViewerASCIISynchronizedPrintf(PetscViewer,const char[],...) PETSC_PRINTF_FORMAT_CHECK(2,3);
233: EXTERN PetscErrorCode PETSC_DLLEXPORT PetscViewerASCIIPushTab(PetscViewer);
234: EXTERN PetscErrorCode PETSC_DLLEXPORT PetscViewerASCIIPopTab(PetscViewer);
235: EXTERN PetscErrorCode PETSC_DLLEXPORT PetscViewerASCIIUseTabs(PetscViewer,PetscTruth);
236: EXTERN PetscErrorCode PETSC_DLLEXPORT PetscViewerASCIISetTab(PetscViewer,PetscInt);
237: EXTERN PetscErrorCode PETSC_DLLEXPORT PetscViewerBinaryGetDescriptor(PetscViewer,int*);
238: EXTERN PetscErrorCode PETSC_DLLEXPORT PetscViewerBinaryGetInfoPointer(PetscViewer,FILE **);
239: EXTERN PetscErrorCode PETSC_DLLEXPORT PetscViewerBinaryRead(PetscViewer,void*,PetscInt,PetscDataType);
240: EXTERN PetscErrorCode PETSC_DLLEXPORT PetscViewerBinaryWrite(PetscViewer,void*,PetscInt,PetscDataType,PetscTruth);
241: EXTERN PetscErrorCode PETSC_DLLEXPORT PetscViewerSetFileType(PetscViewer,PetscViewerFileType);
242: EXTERN PetscErrorCode PETSC_DLLEXPORT PetscViewerStringSPrintf(PetscViewer,const char[],...) PETSC_PRINTF_FORMAT_CHECK(2,3);
243: EXTERN PetscErrorCode PETSC_DLLEXPORT PetscViewerStringSetString(PetscViewer,char[],PetscInt);
244: EXTERN PetscErrorCode PETSC_DLLEXPORT PetscViewerDrawClear(PetscViewer);
245: EXTERN PetscErrorCode PETSC_DLLEXPORT PetscViewerDrawSetInfo(PetscViewer,const char[],const char[],int,int,int,int);
246: EXTERN PetscErrorCode PETSC_DLLEXPORT PetscViewerSocketSetConnection(PetscViewer,const char[],PetscInt);
247: EXTERN PetscErrorCode PETSC_DLLEXPORT PetscViewerBinarySkipInfo(PetscViewer);
248: EXTERN PetscErrorCode PETSC_DLLEXPORT PetscViewerBinaryLoadInfo(PetscViewer);
249: EXTERN PetscErrorCode PETSC_DLLEXPORT PetscViewerBinarySetSkipOptions(PetscViewer,PetscTruth);
250: EXTERN PetscErrorCode PETSC_DLLEXPORT PetscViewerBinaryGetSkipOptions(PetscViewer,PetscTruth*);
251: EXTERN PetscErrorCode PETSC_DLLEXPORT PetscViewerBinaryReadStringArray(PetscViewer,char***);
252: EXTERN PetscErrorCode PETSC_DLLEXPORT PetscViewerBinaryWriteStringArray(PetscViewer,char**);

254: EXTERN PetscErrorCode PETSC_DLLEXPORT PetscViewerSetFilename(PetscViewer,const char[]);
255: EXTERN PetscErrorCode PETSC_DLLEXPORT PetscViewerGetFilename(PetscViewer,char**);

257: EXTERN PetscErrorCode PETSC_DLLEXPORT PetscPLAPACKInitializePackage(char *);
258: EXTERN PetscErrorCode PETSC_DLLEXPORT PetscPLAPACKFinalizePackage(void);

260: EXTERN PetscErrorCode PETSC_DLLEXPORT PetscViewerVUGetPointer(PetscViewer, FILE**);
261: EXTERN PetscErrorCode PETSC_DLLEXPORT PetscViewerVUSetMode(PetscViewer, PetscFileMode);
262: EXTERN PetscErrorCode PETSC_DLLEXPORT PetscViewerVUSetVecSeen(PetscViewer, PetscTruth);
263: EXTERN PetscErrorCode PETSC_DLLEXPORT PetscViewerVUGetVecSeen(PetscViewer, PetscTruth *);
264: EXTERN PetscErrorCode PETSC_DLLEXPORT PetscViewerVUPrintDeferred(PetscViewer, const char [], ...) PETSC_PRINTF_FORMAT_CHECK(2,3);
265: EXTERN PetscErrorCode PETSC_DLLEXPORT PetscViewerVUFlushDeferred(PetscViewer);

267: EXTERN PetscErrorCode PETSC_DLLEXPORT PetscViewerMathematicaInitializePackage(char *);
268: EXTERN PetscErrorCode PETSC_DLLEXPORT PetscViewerMathematicaFinalizePackage(void);
269: EXTERN PetscErrorCode PETSC_DLLEXPORT PetscViewerMathematicaGetName(PetscViewer, const char **);
270: EXTERN PetscErrorCode PETSC_DLLEXPORT PetscViewerMathematicaSetName(PetscViewer, const char []);
271: EXTERN PetscErrorCode PETSC_DLLEXPORT PetscViewerMathematicaClearName(PetscViewer);
272: EXTERN PetscErrorCode PETSC_DLLEXPORT PetscViewerMathematicaSkipPackets(PetscViewer, int);

274: EXTERN PetscErrorCode PETSC_DLLEXPORT PetscViewerSiloGetName(PetscViewer, char **);
275: EXTERN PetscErrorCode PETSC_DLLEXPORT PetscViewerSiloSetName(PetscViewer, const char []);
276: EXTERN PetscErrorCode PETSC_DLLEXPORT PetscViewerSiloClearName(PetscViewer);
277: EXTERN PetscErrorCode PETSC_DLLEXPORT PetscViewerSiloGetMeshName(PetscViewer, char **);
278: EXTERN PetscErrorCode PETSC_DLLEXPORT PetscViewerSiloSetMeshName(PetscViewer, const char []);
279: EXTERN PetscErrorCode PETSC_DLLEXPORT PetscViewerSiloClearMeshName(PetscViewer);

281: EXTERN PetscErrorCode PETSC_DLLEXPORT PetscViewerNetcdfOpen(MPI_Comm,const char[],PetscViewerFileType,PetscViewer*);
282: EXTERN PetscErrorCode PETSC_DLLEXPORT PetscViewerNetcdfGetID(PetscViewer, int *);

284: EXTERN PetscErrorCode PETSC_DLLEXPORT PetscViewerHDF4Open(MPI_Comm,const char[],PetscViewerFileType,PetscViewer*);
285: EXTERN PetscErrorCode PETSC_DLLEXPORT PetscViewerHDF4WriteSDS(PetscViewer viewer, float *xf, int d, int *dims, int bs);

287: /*
288:      These are all the default viewers that do not have 
289:    to be explicitly opened
290: */
291: EXTERN PetscViewer PETSC_DLLEXPORT PETSC_VIEWER_STDOUT_(MPI_Comm);
292: EXTERN PetscViewer PETSC_DLLEXPORT PETSC_VIEWER_STDERR_(MPI_Comm);
293: EXTERN PetscViewer PETSC_DLLEXPORT PETSC_VIEWER_DRAW_(MPI_Comm);
294: EXTERN PetscViewer PETSC_DLLEXPORT PETSC_VIEWER_SOCKET_(MPI_Comm);
295: EXTERN PetscViewer PETSC_DLLEXPORT PETSC_VIEWER_BINARY_(MPI_Comm);
296: EXTERN PetscViewer PETSC_DLLEXPORT PETSC_VIEWER_MATLAB_(MPI_Comm);
297: EXTERN PetscViewer PETSC_VIEWER_MATHEMATICA_WORLD_PRIVATE;

299: #define PETSC_VIEWER_STDERR_SELF  PETSC_VIEWER_STDERR_(PETSC_COMM_SELF)
300: #define PETSC_VIEWER_STDERR_WORLD PETSC_VIEWER_STDERR_(PETSC_COMM_WORLD)

302: /*MC
303:   PETSC_VIEWER_STDOUT_WORLD  - same as PETSC_VIEWER_STDOUT_(PETSC_COMM_WORLD)

305:   Level: beginner
306: M*/
307: #define PETSC_VIEWER_STDOUT_WORLD PETSC_VIEWER_STDOUT_(PETSC_COMM_WORLD)

309: /*MC
310:   PETSC_VIEWER_STDOUT_SELF  - same as PETSC_VIEWER_STDOUT_(PETSC_COMM_SELF)

312:   Level: beginner
313: M*/
314: #define PETSC_VIEWER_STDOUT_SELF  PETSC_VIEWER_STDOUT_(PETSC_COMM_SELF)

316: /*MC
317:   PETSC_VIEWER_DRAW_WORLD  - same as PETSC_VIEWER_DRAW_(PETSC_COMM_WORLD)

319:   Level: intermediate
320: M*/
321: #define PETSC_VIEWER_DRAW_WORLD   PETSC_VIEWER_DRAW_(PETSC_COMM_WORLD)

323: /*MC
324:   PETSC_VIEWER_DRAW_SELF  - same as PETSC_VIEWER_DRAW_(PETSC_COMM_SELF)

326:   Level: intermediate
327: M*/
328: #define PETSC_VIEWER_DRAW_SELF    PETSC_VIEWER_DRAW_(PETSC_COMM_SELF)

330: /*MC
331:   PETSC_VIEWER_SOCKET_WORLD  - same as PETSC_VIEWER_SOCKET_(PETSC_COMM_WORLD)

333:   Level: intermediate
334: M*/
335: #define PETSC_VIEWER_SOCKET_WORLD PETSC_VIEWER_SOCKET_(PETSC_COMM_WORLD)

337: /*MC
338:   PETSC_VIEWER_SOCKET_SELF  - same as PETSC_VIEWER_SOCKET_(PETSC_COMM_SELF)

340:   Level: intermediate
341: M*/
342: #define PETSC_VIEWER_SOCKET_SELF  PETSC_VIEWER_SOCKET_(PETSC_COMM_SELF)

344: /*MC
345:   PETSC_VIEWER_BINARY_WORLD  - same as PETSC_VIEWER_BINARY_(PETSC_COMM_WORLD)

347:   Level: intermediate
348: M*/
349: #define PETSC_VIEWER_BINARY_WORLD PETSC_VIEWER_BINARY_(PETSC_COMM_WORLD)

351: /*MC
352:   PETSC_VIEWER_BINARY_SELF  - same as PETSC_VIEWER_BINARY_(PETSC_COMM_SELF)

354:   Level: intermediate
355: M*/
356: #define PETSC_VIEWER_BINARY_SELF  PETSC_VIEWER_BINARY_(PETSC_COMM_SELF)

358: /*MC
359:   PETSC_VIEWER_MATLAB_WORLD  - same as PETSC_VIEWER_MATLAB_(PETSC_COMM_WORLD)

361:   Level: intermediate
362: M*/
363: #define PETSC_VIEWER_MATLAB_WORLD PETSC_VIEWER_MATLAB_(PETSC_COMM_WORLD)

365: /*MC
366:   PETSC_VIEWER_MATLAB_SELF  - same as PETSC_VIEWER_MATLAB_(PETSC_COMM_SELF)

368:   Level: intermediate
369: M*/
370: #define PETSC_VIEWER_MATLAB_SELF  PETSC_VIEWER_MATLAB_(PETSC_COMM_SELF)

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

374: /*
375:    petscViewer writes to Matlab .mat file
376: */
377: EXTERN PetscErrorCode PETSC_DLLEXPORT PetscViewerMatlabPutArray(PetscViewer,int,int,PetscScalar*,char*);
378: EXTERN PetscErrorCode PETSC_DLLEXPORT PetscViewerMatlabGetArray(PetscViewer,int,int,PetscScalar*,char*);
379: EXTERN PetscErrorCode PETSC_DLLEXPORT PetscViewerMatlabPutVariable(PetscViewer,const char*,void*);

381: /* 
382:     PetscViewer utility routines used by PETSc that are not normally used
383:    by users.
384: */
385: EXTERN PetscErrorCode PETSC_DLLEXPORT  PetscViewerSocketPutScalar(PetscViewer,PetscInt,PetscInt,PetscScalar*);
386: EXTERN PetscErrorCode PETSC_DLLEXPORT  PetscViewerSocketPutReal(PetscViewer,PetscInt,PetscInt,PetscReal*);
387: EXTERN PetscErrorCode PETSC_DLLEXPORT  PetscViewerSocketPutInt(PetscViewer,PetscInt,PetscInt*);
388: EXTERN PetscErrorCode PETSC_DLLEXPORT  PetscViewerSocketPutSparse_Private(PetscViewer,PetscInt,PetscInt,PetscInt,PetscScalar*,PetscInt*,PetscInt *);

390: /*S
391:      PetscViewers - Abstract collection of PetscViewers

393:    Level: intermediate

395:   Concepts: viewing

397: .seealso:  PetscViewerCreate(), PetscViewerSetType(), PetscViewerType, PetscViewer, PetscViewersCreate(),
398:            PetscViewersGetViewer()
399: S*/
400: typedef struct _p_PetscViewers* PetscViewers;
401: EXTERN PetscErrorCode PETSC_DLLEXPORT PetscViewersCreate(MPI_Comm,PetscViewers*);
402: EXTERN PetscErrorCode PETSC_DLLEXPORT PetscViewersDestroy(PetscViewers);
403: EXTERN PetscErrorCode PETSC_DLLEXPORT PetscViewersGetViewer(PetscViewers,int,PetscViewer*);

406: #endif