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 typedef struct {PetscViewer viewer;PetscViewerFormat format;} PetscViewerAndFormat; 134 PETSC_EXTERN PetscErrorCode PetscViewerAndFormatCreate(PetscViewer,PetscViewerFormat,PetscViewerAndFormat**); 135 PETSC_EXTERN PetscErrorCode PetscViewerAndFormatDestroy(PetscViewerAndFormat**); 136 137 /* 138 Operations explicit to a particular class of viewers 139 */ 140 141 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**); 182 183 PETSC_EXTERN PetscErrorCode PetscViewerFileSetName(PetscViewer,const char[]); 184 PETSC_EXTERN PetscErrorCode PetscViewerFileGetName(PetscViewer,const char**); 185 186 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); 191 192 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); 198 199 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); 205 206 PETSC_EXTERN PetscErrorCode PetscViewerNetcdfOpen(MPI_Comm,const char[],PetscFileMode,PetscViewer*); 207 PETSC_EXTERN PetscErrorCode PetscViewerNetcdfGetID(PetscViewer, int *); 208 209 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*); 212 213 /* 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; 226 227 #define PETSC_VIEWER_STDERR_SELF PETSC_VIEWER_STDERR_(PETSC_COMM_SELF) 228 #define PETSC_VIEWER_STDERR_WORLD PETSC_VIEWER_STDERR_(PETSC_COMM_WORLD) 229 230 /*MC 231 PETSC_VIEWER_STDOUT_WORLD - same as PETSC_VIEWER_STDOUT_(PETSC_COMM_WORLD) 232 233 Level: beginner 234 M*/ 235 #define PETSC_VIEWER_STDOUT_WORLD PETSC_VIEWER_STDOUT_(PETSC_COMM_WORLD) 236 237 /*MC 238 PETSC_VIEWER_STDOUT_SELF - same as PETSC_VIEWER_STDOUT_(PETSC_COMM_SELF) 239 240 Level: beginner 241 M*/ 242 #define PETSC_VIEWER_STDOUT_SELF PETSC_VIEWER_STDOUT_(PETSC_COMM_SELF) 243 244 /*MC 245 PETSC_VIEWER_DRAW_WORLD - same as PETSC_VIEWER_DRAW_(PETSC_COMM_WORLD) 246 247 Level: intermediate 248 M*/ 249 #define PETSC_VIEWER_DRAW_WORLD PETSC_VIEWER_DRAW_(PETSC_COMM_WORLD) 250 251 /*MC 252 PETSC_VIEWER_DRAW_SELF - same as PETSC_VIEWER_DRAW_(PETSC_COMM_SELF) 253 254 Level: intermediate 255 M*/ 256 #define PETSC_VIEWER_DRAW_SELF PETSC_VIEWER_DRAW_(PETSC_COMM_SELF) 257 258 /*MC 259 PETSC_VIEWER_SOCKET_WORLD - same as PETSC_VIEWER_SOCKET_(PETSC_COMM_WORLD) 260 261 Level: intermediate 262 M*/ 263 #define PETSC_VIEWER_SOCKET_WORLD PETSC_VIEWER_SOCKET_(PETSC_COMM_WORLD) 264 265 /*MC 266 PETSC_VIEWER_SOCKET_SELF - same as PETSC_VIEWER_SOCKET_(PETSC_COMM_SELF) 267 268 Level: intermediate 269 M*/ 270 #define PETSC_VIEWER_SOCKET_SELF PETSC_VIEWER_SOCKET_(PETSC_COMM_SELF) 271 272 /*MC 273 PETSC_VIEWER_BINARY_WORLD - same as PETSC_VIEWER_BINARY_(PETSC_COMM_WORLD) 274 275 Level: intermediate 276 M*/ 277 #define PETSC_VIEWER_BINARY_WORLD PETSC_VIEWER_BINARY_(PETSC_COMM_WORLD) 278 279 /*MC 280 PETSC_VIEWER_BINARY_SELF - same as PETSC_VIEWER_BINARY_(PETSC_COMM_SELF) 281 282 Level: intermediate 283 M*/ 284 #define PETSC_VIEWER_BINARY_SELF PETSC_VIEWER_BINARY_(PETSC_COMM_SELF) 285 286 /*MC 287 PETSC_VIEWER_MATLAB_WORLD - same as PETSC_VIEWER_MATLAB_(PETSC_COMM_WORLD) 288 289 Level: intermediate 290 M*/ 291 #define PETSC_VIEWER_MATLAB_WORLD PETSC_VIEWER_MATLAB_(PETSC_COMM_WORLD) 292 293 /*MC 294 PETSC_VIEWER_MATLAB_SELF - same as PETSC_VIEWER_MATLAB_(PETSC_COMM_SELF) 295 296 Level: intermediate 297 M*/ 298 #define PETSC_VIEWER_MATLAB_SELF PETSC_VIEWER_MATLAB_(PETSC_COMM_SELF) 299 300 #define PETSC_VIEWER_MATHEMATICA_WORLD (PetscViewerInitializeMathematicaWorld_Private(),PETSC_VIEWER_MATHEMATICA_WORLD_PRIVATE) 301 302 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*); 307 308 /* 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*); 314 315 #if defined(PETSC_HAVE_SAWS) 316 PETSC_EXTERN PetscErrorCode PetscObjectViewSAWs(PetscObject,PetscViewer); 317 #endif 318 319 /*S 320 PetscViewers - Abstract collection of PetscViewers. It is just an expandable array of viewers. 321 322 Level: intermediate 323 324 Concepts: viewing 325 326 .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*); 333 334 /* Reset __FUNCT__ in case the user does not define it themselves */ 335 #undef __FUNCT__ 336 #define __FUNCT__ "User provided function" 337 338 #endif 339