/* $Id: petsc.h,v 1.297 2001/09/07 20:13:16 bsmith Exp $ */ /* This is the main PETSc include file (for C and C++). It is included by all other PETSc include files, so it almost never has to be specifically included. */ #if !defined(__PETSC_H) #define __PETSC_H /* ========================================================================== */ /* Current PETSc version number and release date */ #include "petscversion.h" /* ========================================================================== */ /* petscconf.h is contained in bmake/${PETSC_ARCH}/petscconf.h it is found automatically by the compiler due to the -I${PETSC_DIR}/bmake/${PETSC_ARCH} in the bmake/common_variables definition of PETSC_INCLUDE */ #include "petscconf.h" /* Fixes for configure time choices which impact our interface. Currently only calling conventions and extra compiler checking falls under this category. */ #if !defined(PETSC_PRINTF_FORMAT_CHECK) #define PETSC_PRINTF_FORMAT_CHECK(a,b) #endif #if !defined (PETSC_STDCALL) #define PETSC_STDCALL #endif #if !defined (PETSC_TEMPLATE) #define PETSC_TEMPLATE #endif /* ========================================================================== */ #include /* Defines the interface to MPI allowing the use of all MPI functions. */ #include "mpi.h" /* EXTERN indicates a PETSc function defined elsewhere */ #if !defined(EXTERN) #define EXTERN extern #endif /* Defines some elementary mathematics functions and constants. */ #include "petscmath.h" /* Basic PETSc constants */ /*E PetscTruth - Logical variable. Actually an integer Level: beginner E*/ typedef enum { PETSC_FALSE,PETSC_TRUE } PetscTruth; #define PETSC_NULL 0 #define PETSC_DECIDE -1 #define PETSC_DEFAULT -2 #define PETSC_YES PETSC_TRUE #define PETSC_NO PETSC_FALSE #define PETSC_IGNORE PETSC_NULL #define PETSC_DETERMINE PETSC_DECIDE extern MPI_Comm PETSC_COMM_WORLD; extern MPI_Comm PETSC_COMM_SELF; extern PetscTruth PetscInitializeCalled; EXTERN int PetscSetCommWorld(MPI_Comm); EXTERN int PetscSetHelpVersionFunctions(int (*)(MPI_Comm),int (*)(MPI_Comm)); /*MC PetscMalloc - Allocates memory Input Parameter: . m - number of bytes to allocate Output Parameter: . result - memory allocated Synopsis: int PetscMalloc(size_t m,void **result) Level: beginner Notes: Memory is always allocated at least double aligned .seealso: PetscFree(), PetscNew() Concepts: memory allocation M*/ #define PetscMalloc(a,b) (*PetscTrMalloc)((a),__LINE__,__FUNCT__,__FILE__,__SDIR__,(void**)(b)) /*MC PetscNew - Allocates memory of a particular type Input Parameter: . type - structure name of space to be allocated. Memory of size sizeof(type) is allocated Output Parameter: . result - memory allocated Synopsis: int PetscNew(struct type,((type *))result) Level: beginner .seealso: PetscFree(), PetscMalloc() Concepts: memory allocation M*/ #define PetscNew(A,b) PetscMalloc(sizeof(A),(b)) /*MC PetscFree - Frees memory Input Parameter: . memory - memory to free Synopsis: int PetscFree(void *memory) Level: beginner Notes: Memory must have been obtained with PetscNew() or PetscMalloc() .seealso: PetscNew(), PetscMalloc() Concepts: memory allocation M*/ #define PetscFree(a) (*PetscTrFree)((a),__LINE__,__FUNCT__,__FILE__,__SDIR__) EXTERN int (*PetscTrMalloc)(size_t,int,char*,char*,char*,void**); EXTERN int (*PetscTrFree)(void *,int,char*,char*,char*); EXTERN int PetscSetMalloc(int (*)(size_t,int,char*,char*,char*,void**),int (*)(void *,int,char*,char*,char*)); EXTERN int PetscClearMalloc(void); /* Routines for tracing memory corruption/bleeding with default PETSc memory allocation */ EXTERN int PetscTrDump(FILE *); EXTERN int PetscTrSpace(PetscLogDouble *,PetscLogDouble *,PetscLogDouble *); EXTERN int PetscTrValid(int,const char[],const char[],const char[]); EXTERN int PetscTrDebugLevel(int); EXTERN int PetscTrLog(void); EXTERN int PetscTrLogDump(FILE *); EXTERN int PetscGetResidentSetSize(PetscLogDouble *); /* Variable type where we stash PETSc object pointers in Fortran. Assumes that sizeof(long) == sizeof(void*)which is true on all machines that we know. */ #define PetscFortranAddr long /*E PetscDataType - Used for handling different basic data types. Level: beginner .seealso: PetscBinaryRead(), PetscBinaryWrite(), PetscDataTypeToMPIDataType(), PetscDataTypeGetSize(), PetscDataTypeGetName() E*/ typedef enum {PETSC_INT = 0,PETSC_DOUBLE = 1,PETSC_COMPLEX = 2, PETSC_LONG =3 ,PETSC_SHORT = 4,PETSC_FLOAT = 5, PETSC_CHAR = 6,PETSC_LOGICAL = 7} PetscDataType; #if defined(PETSC_USE_COMPLEX) #define PETSC_SCALAR PETSC_COMPLEX #else #if defined(PETSC_USE_SINGLE) #define PETSC_SCALAR PETSC_FLOAT #else #define PETSC_SCALAR PETSC_DOUBLE #endif #endif #if defined(PETSC_USE_SINGLE) #define PETSC_REAL PETSC_FLOAT #else #define PETSC_REAL PETSC_DOUBLE #endif #define PETSC_FORTRANADDR PETSC_LONG EXTERN int PetscDataTypeToMPIDataType(PetscDataType,MPI_Datatype*); EXTERN int PetscDataTypeGetSize(PetscDataType,int*); EXTERN int PetscDataTypeGetName(PetscDataType,char*[]); /* Basic memory and string operations. These are usually simple wrappers around the basic Unix system calls, but a few of them have additional functionality and/or error checking. */ EXTERN int PetscMemcpy(void *,const void *,int); EXTERN int PetscBitMemcpy(void*,int,const void*,int,int,PetscDataType); EXTERN int PetscMemmove(void *,void *,int); EXTERN int PetscMemzero(void *,int); EXTERN int PetscMemcmp(const void*,const void*,int,PetscTruth *); EXTERN int PetscStrlen(const char[],int*); EXTERN int PetscStrcmp(const char[],const char[],PetscTruth *); EXTERN int PetscStrgrt(const char[],const char[],PetscTruth *); EXTERN int PetscStrcasecmp(const char[],const char[],PetscTruth*); EXTERN int PetscStrncmp(const char[],const char[],int,PetscTruth*); EXTERN int PetscStrcpy(char[],const char[]); EXTERN int PetscStrcat(char[],const char[]); EXTERN int PetscStrncat(char[],const char[],int); EXTERN int PetscStrncpy(char[],const char[],int); EXTERN int PetscStrchr(const char[],char,char **); EXTERN int PetscStrtolower(char[]); EXTERN int PetscStrrchr(const char[],char,char **); EXTERN int PetscStrstr(const char[],const char[],char **); EXTERN int PetscStrallocpy(const char[],char **); EXTERN int PetscStrreplace(MPI_Comm,const char[],char*,int); #define PetscStrfree(a) ((a) ? PetscFree(a) : 0) typedef struct {char token;char *array;char *current;} PetscToken; EXTERN int PetscTokenCreate(const char[],const char,PetscToken**); EXTERN int PetscTokenFind(PetscToken*,char **); EXTERN int PetscTokenDestroy(PetscToken*); /* These are MPI operations for MPI_Allreduce() etc */ EXTERN MPI_Op PetscMaxSum_Op; #if defined(PETSC_USE_COMPLEX) EXTERN MPI_Op PetscSum_Op; #else #define PetscSum_Op MPI_SUM #endif EXTERN int PetscMaxSum(MPI_Comm,const int[],int*,int*); /*S PetscObject - any PETSc object, PetscViewer, Mat, Vec, SLES etc Level: beginner .seealso: PetscObjectDestroy(), PetscObjectView(), PetscObjectGetName(), PetscObjectSetName() S*/ typedef struct _p_PetscObject* PetscObject; /*S PetscFList - Linked list of functions, possibly stored in dynamic libraries, accessed by string name Level: advanced .seealso: PetscFListAdd(), PetscFListDestroy() S*/ typedef struct _PetscFList *PetscFList; #include "petscviewer.h" #include "petscoptions.h" EXTERN int PetscShowMemoryUsage(PetscViewer,char*); EXTERN int PetscGetTime(PetscLogDouble*); EXTERN int PetscGetCPUTime(PetscLogDouble*); EXTERN int PetscSleep(int); /* Initialization of PETSc */ EXTERN int PetscInitialize(int*,char***,char[],const char[]); EXTERN int PetscInitializeNoArguments(void); EXTERN int PetscFinalize(void); EXTERN int PetscInitializeFortran(void); EXTERN int PetscGetArgs(int*,char ***); EXTERN int PetscEnd(void); /* ParameterDict is an abstraction for arguments to interface mechanisms */ extern int DICT_COOKIE; typedef struct _p_Dict *ParameterDict; typedef void (**PetscVoidFunction)(void); /* PetscTryMethod - Queries an object for a method, if it exists then calls it. Can support argument checking */ #if defined(PETSC_FORTRAN_STUBS) #define PetscTryMethod(obj,A,B,C) \ 0;{ int (*f)B; \ *ierr = PetscObjectQueryFunction((PetscObject)obj,#A,(PetscVoidFunction)&f);if (*ierr) return; \ if (f) {*ierr = (*f)C;if (*ierr) return;}\ } #else #define PetscTryMethod(obj,A,B,C) \ 0;{ int (*f)B, __ierr; \ __ierr = PetscObjectQueryFunction((PetscObject)obj,#A,(PetscVoidFunction)&f);CHKERRQ(__ierr); \ if (f) {__ierr = (*f)C;CHKERRQ(__ierr);}\ } #endif /* Functions that can act on any PETSc object. */ EXTERN int PetscObjectDestroy(PetscObject); EXTERN int PetscObjectExists(PetscObject,PetscTruth*); EXTERN int PetscObjectGetComm(PetscObject,MPI_Comm *); EXTERN int PetscObjectGetCookie(PetscObject,int *); EXTERN int PetscObjectGetType(PetscObject,int *); EXTERN int PetscObjectSetName(PetscObject,const char[]); EXTERN int PetscObjectGetName(PetscObject,char*[]); EXTERN int PetscObjectReference(PetscObject); EXTERN int PetscObjectGetReference(PetscObject,int*); EXTERN int PetscObjectDereference(PetscObject); EXTERN int PetscObjectGetNewTag(PetscObject,int *); EXTERN int PetscObjectSetParameterDict(PetscObject,ParameterDict); EXTERN int PetscObjectGetParameterDict(PetscObject,ParameterDict*); EXTERN int PetscCommGetNewTag(MPI_Comm,int *); EXTERN int PetscObjectView(PetscObject,PetscViewer); EXTERN int PetscObjectCompose(PetscObject,const char[],PetscObject); EXTERN int PetscObjectQuery(PetscObject,const char[],PetscObject *); EXTERN int PetscObjectComposeFunction(PetscObject,const char[],const char[],void (*)(void)); #if defined(PETSC_USE_DYNAMIC_LIBRARIES) #define PetscObjectComposeFunctionDynamic(a,b,c,d) PetscObjectComposeFunction(a,b,c,0) #else #define PetscObjectComposeFunctionDynamic(a,b,c,d) PetscObjectComposeFunction(a,b,c,(void (*)(void))(d)) #endif EXTERN int PetscObjectQueryFunction(PetscObject,const char[],void (**)(void)); EXTERN int PetscObjectSetOptionsPrefix(PetscObject,const char[]); EXTERN int PetscObjectAppendOptionsPrefix(PetscObject,const char[]); EXTERN int PetscObjectPrependOptionsPrefix(PetscObject,const char[]); EXTERN int PetscObjectGetOptionsPrefix(PetscObject,char*[]); EXTERN int PetscObjectPublish(PetscObject); EXTERN int PetscObjectChangeTypeName(PetscObject,char *); EXTERN int PetscObjectChangeSerializeName(PetscObject,char *); EXTERN int PetscObjectRegisterDestroy(PetscObject); EXTERN int PetscObjectRegisterDestroyAll(void); EXTERN int PetscObjectName(PetscObject); EXTERN int PetscTypeCompare(PetscObject,char*,PetscTruth*); EXTERN int PetscSerializeCompare(PetscObject,char*,PetscTruth*); /* Defines PETSc error handling. */ #include "petscerror.h" /*S PetscOList - Linked list of PETSc objects, accessable by string name Level: advanced .seealso: PetscOListAdd(), PetscOListDestroy(), PetscOListFind() S*/ typedef struct _PetscOList *PetscOList; EXTERN int PetscOListDestroy(PetscOList *); EXTERN int PetscOListFind(PetscOList,const char[],PetscObject*); EXTERN int PetscOListReverseFind(PetscOList,PetscObject,char**); EXTERN int PetscOListAdd(PetscOList *,const char[],PetscObject); EXTERN int PetscOListDuplicate(PetscOList,PetscOList *); /* Dynamic library lists. Lists of names of routines in dynamic link libraries that will be loaded as needed. */ EXTERN int PetscFListAdd(PetscFList*,const char[],const char[],void (*)(void)); EXTERN int PetscFListDestroy(PetscFList*); EXTERN int PetscFListFind(MPI_Comm,PetscFList,const char[],void (**)(void)); EXTERN int PetscFListPrintTypes(MPI_Comm,FILE*,const char[],const char[],char *,char *,PetscFList); #if defined(PETSC_USE_DYNAMIC_LIBRARIES) #define PetscFListAddDynamic(a,b,p,c) PetscFListAdd(a,b,p,0) #else #define PetscFListAddDynamic(a,b,p,c) PetscFListAdd(a,b,p,(void (*)(void))c) #endif EXTERN int PetscFListDuplicate(PetscFList,PetscFList *); EXTERN int PetscFListView(PetscFList,PetscViewer); EXTERN int PetscFListConcat(const char [],const char [],char []); EXTERN int PetscFListGet(PetscFList,char ***,int*); /*S PetscDLLibraryList - Linked list of dynamics libraries to search for functions Level: advanced PETSC_USE_DYNAMIC_LIBRARIES must be defined in petscconf.h to use dynamic libraries .seealso: PetscDLLibraryOpen() S*/ typedef struct _PetscDLLibraryList *PetscDLLibraryList; extern PetscDLLibraryList DLLibrariesLoaded; EXTERN int PetscDLLibraryRetrieve(MPI_Comm,const char[],char *,int,PetscTruth *); EXTERN int PetscDLLibraryOpen(MPI_Comm,const char[],void **); EXTERN int PetscDLLibrarySym(MPI_Comm,PetscDLLibraryList *,const char[],const char[],void **); EXTERN int PetscDLLibraryAppend(MPI_Comm,PetscDLLibraryList *,const char[]); EXTERN int PetscDLLibraryPrepend(MPI_Comm,PetscDLLibraryList *,const char[]); EXTERN int PetscDLLibraryClose(PetscDLLibraryList); EXTERN int PetscDLLibraryPrintPath(void); EXTERN int PetscDLLibraryGetInfo(void *,char *,char **); /* Mechanism for translating PETSc object representations between languages Not currently used. */ typedef enum {PETSC_LANGUAGE_C,PETSC_LANGUAGE_CPP} PetscLanguage; #define PETSC_LANGUAGE_F77 PETSC_LANGUAGE_C EXTERN int PetscObjectComposeLanguage(PetscObject,PetscLanguage,void *); EXTERN int PetscObjectQueryLanguage(PetscObject,PetscLanguage,void **); /* Useful utility routines */ EXTERN int PetscSplitOwnership(MPI_Comm,int*,int*); EXTERN int PetscSplitOwnershipBlock(MPI_Comm,int,int*,int*); EXTERN int PetscSequentialPhaseBegin(MPI_Comm,int); EXTERN int PetscSequentialPhaseEnd(MPI_Comm,int); EXTERN int PetscBarrier(PetscObject); EXTERN int PetscMPIDump(FILE*); #define PetscNot(a) ((a) ? PETSC_FALSE : PETSC_TRUE) /* Defines basic graphics available from PETSc. */ #include "petscdraw.h" /* Defines the base data structures for all PETSc objects */ #include "petschead.h" /* Defines PETSc profiling. */ #include "petsclog.h" /* For locking, unlocking and destroying AMS memories associated with PETSc objects */ #if defined(PETSC_HAVE_AMS) extern PetscTruth PetscAMSPublishAll; #define PetscPublishAll(v) (PetscAMSPublishAll ? PetscObjectPublish((PetscObject)v) : 0) #define PetscObjectTakeAccess(obj) ((((PetscObject)(obj))->amem == -1) ? 0 : AMS_Memory_take_access(((PetscObject)(obj))->amem)) #define PetscObjectGrantAccess(obj) ((((PetscObject)(obj))->amem == -1) ? 0 : AMS_Memory_grant_access(((PetscObject)(obj))->amem)) #define PetscObjectDepublish(obj) ((((PetscObject)(obj))->amem == -1) ? 0 : AMS_Memory_destroy(((PetscObject)(obj))->amem)); \ ((PetscObject)(obj))->amem = -1; #else #define PetscPublishAll(v) 0 #define PetscObjectTakeAccess(obj) 0 #define PetscObjectGrantAccess(obj) 0 #define PetscObjectDepublish(obj) 0 #endif /* This code allows one to pass a MPI communicator between C and Fortran. MPI 2.0 defines a standard API for doing this. The code here is provided to allow PETSc to work with MPI 1.1 standard MPI libraries. */ EXTERN int MPICCommToFortranComm(MPI_Comm,int *); EXTERN int MPIFortranCommToCComm(int,MPI_Comm*); /* Simple PETSc parallel IO for ASCII printing */ EXTERN int PetscFixFilename(const char[],char[]); EXTERN int PetscFOpen(MPI_Comm,const char[],const char[],FILE**); EXTERN int PetscFClose(MPI_Comm,FILE*); EXTERN int PetscFPrintf(MPI_Comm,FILE*,const char[],...) PETSC_PRINTF_FORMAT_CHECK(3,4); EXTERN int PetscPrintf(MPI_Comm,const char[],...) PETSC_PRINTF_FORMAT_CHECK(2,3); EXTERN int (*PetscErrorPrintf)(const char[],...); EXTERN int (*PetscHelpPrintf)(MPI_Comm,const char[],...); EXTERN int PetscPOpen(MPI_Comm,char *,char*,const char[],FILE **); EXTERN int PetscPClose(MPI_Comm,FILE*); EXTERN int PetscSynchronizedPrintf(MPI_Comm,const char[],...) PETSC_PRINTF_FORMAT_CHECK(2,3); EXTERN int PetscSynchronizedFPrintf(MPI_Comm,FILE*,const char[],...) PETSC_PRINTF_FORMAT_CHECK(3,4); EXTERN int PetscSynchronizedFlush(MPI_Comm); EXTERN int PetscSynchronizedFGets(MPI_Comm,FILE*,int,char[]); EXTERN int PetscStartMatlab(MPI_Comm,char *,char*,FILE**); EXTERN int PetscStartJava(MPI_Comm,char *,char*,FILE**); EXTERN int PetscGetPetscDir(char**); EXTERN int PetscPopUpSelect(MPI_Comm,char*,char*,int,char**,int*); /*S PetscObjectContainer - Simple PETSc object that contains a pointer to any required data Level: advanced .seealso: PetscObject, PetscObjectContainerCreate() S*/ typedef struct _p_PetscObjectContainer* PetscObjectContainer; EXTERN int PetscObjectContainerGetPointer(PetscObjectContainer,void **); EXTERN int PetscObjectContainerSetPointer(PetscObjectContainer,void *); EXTERN int PetscObjectContainerDestroy(PetscObjectContainer); EXTERN int PetscObjectContainerCreate(MPI_Comm comm,PetscObjectContainer *); /* For incremental debugging */ extern PetscTruth PetscCompare; EXTERN int PetscCompareDouble(double); EXTERN int PetscCompareScalar(PetscScalar); EXTERN int PetscCompareInt(int); /* For use in debuggers */ extern int PetscGlobalRank,PetscGlobalSize; EXTERN int PetscIntView(int,int[],PetscViewer); EXTERN int PetscRealView(int,PetscReal[],PetscViewer); EXTERN int PetscScalarView(int,PetscScalar[],PetscViewer); /* Allows accessing Matlab Engine */ #include "petscengine.h" /* C code optimization is often enhanced by telling the compiler that certain pointer arguments to functions are not aliased to to other arguments. This is not yet ANSI C standard so we define the macro "restrict" to indicate that the variable is not aliased to any other argument. */ #if defined(PETSC_HAVE_RESTRICT) && !defined(__cplusplus) #define restrict _Restrict #else #if defined(restrict) #undef restrict #endif #define restrict #endif /* Determine if some of the kernel computation routines use Fortran (rather than C) for the numerical calculations. On some machines and compilers (like complex numbers) the Fortran version of the routines is faster than the C/C++ versions. The flag PETSC_USE_FORTRAN_KERNELS would be set in the petscconf.h file */ #if defined(PETSC_USE_FORTRAN_KERNELS) #if !defined(PETSC_USE_FORTRAN_KERNEL_MULTAIJ) #define PETSC_USE_FORTRAN_KERNEL_MULTAIJ #endif #if !defined(PETSC_USE_FORTRAN_KERNEL_MULTTRANSPOSEAIJ) #define PETSC_USE_FORTRAN_KERNEL_MULTTRANSPOSEAIJ #endif #if !defined(PETSC_USE_FORTRAN_KERNEL_NORM) #define PETSC_USE_FORTRAN_KERNEL_NORM #endif #if !defined(PETSC_USE_FORTRAN_KERNEL_MAXPY) #define PETSC_USE_FORTRAN_KERNEL_MAXPY #endif #if !defined(PETSC_USE_FORTRAN_KERNEL_SOLVEAIJ) #define PETSC_USE_FORTRAN_KERNEL_SOLVEAIJ #endif #if !defined(PETSC_USE_FORTRAN_KERNEL_RELAXAIJ) #define PETSC_USE_FORTRAN_KERNEL_RELAXAIJ #endif #if !defined(PETSC_USE_FORTRAN_KERNEL_SOLVEBAIJ) #define PETSC_USE_FORTRAN_KERNEL_SOLVEBAIJ #endif #if !defined(PETSC_USE_FORTRAN_KERNEL_MULTADDAIJ) #define PETSC_USE_FORTRAN_KERNEL_MULTADDAIJ #endif #if !defined(PETSC_USE_FORTRAN_KERNEL_MDOT) #define PETSC_USE_FORTRAN_KERNEL_MDOT #endif #if !defined(PETSC_USE_FORTRAN_KERNEL_XTIMESY) #define PETSC_USE_FORTRAN_KERNEL_XTIMESY #endif #if !defined(PETSC_USE_FORTRAN_KERNEL_AYPX) #define PETSC_USE_FORTRAN_KERNEL_AYPX #endif #if !defined(PETSC_USE_FORTRAN_KERNEL_WAXPY) #define PETSC_USE_FORTRAN_KERNEL_WAXPY #endif #endif /* Macros for indicating code that should be compiled with a C interface, rather than a C++ interface. Any routines that are dynamically loaded (such as the PCCreate_XXX() routines) must be wrapped so that the name mangler does not change the functions symbol name. This just hides the ugly extern "C" {} wrappers. */ #if defined(__cplusplus) #define EXTERN_C_BEGIN extern "C" { #define EXTERN_C_END } #else #define EXTERN_C_BEGIN #define EXTERN_C_END #endif /* --------------------------------------------------------------------*/ /*M size - integer variable used to contain the number of processors in the relevent MPI_Comm Level: beginner .seealso: rank, comm M*/ /*M rank - integer variable used to contain the number of this processor relative to all in the relevent MPI_Comm Level: beginner .seealso: size, comm M*/ /*M comm - MPI_Comm used in the current routine or object Level: beginner .seealso: size, rank M*/ /*M PetscScalar - PETSc type that represents either a double precision real number or a double precision complex number if the code is compiled with BOPT=g_complex or O_complex Level: beginner M*/ /* The IBM include files define hz, here we hide it so that it may be used as a regular user variable. */ #if defined(hz) #undef hz #endif /* For arrays that contain filenames or paths */ #if defined(PETSC_HAVE_LIMITS_H) #include #endif #if defined(PETSC_HAVE_SYS_PARAM_H) #include #endif #if defined(MAXPATHLEN) # define PETSC_MAX_PATH_LEN MAXPATHLEN #elif defined(MAX_PATH) # define PETSC_MAX_PATH_LEN MAX_PATH #elif defined(_MAX_PATH) # define PETSC_MAX_PATH_LEN _MAX_PATH #else # define PETSC_MAX_PATH_LEN 4096 #endif #endif