1 2 #include <petsc/private/fortranimpl.h> 3 4 #if defined(PETSC_HAVE_FORTRAN_CAPS) 5 #define petscinitializefortran_ PETSCINITIALIZEFORTRAN 6 #define petscsetcommonblock_ PETSCSETCOMMONBLOCK 7 #define petscsetfortranbasepointers_ PETSCSETFORTRANBASEPOINTERS 8 #define petsc_null_function_ PETSC_NULL_FUNCTION 9 #define petscsetcommonblocknumeric_ PETSCSETCOMMONBLOCKNUMERIC 10 #elif !defined(PETSC_HAVE_FORTRAN_UNDERSCORE) 11 #define petscinitializefortran_ petscinitializefortran 12 #define petscsetcommonblock_ petscsetcommonblock 13 #define petscsetfortranbasepointers_ petscsetfortranbasepointers 14 #define petsc_null_function_ petsc_null_function 15 #define petscsetcommonblocknumeric_ petscsetcommonblocknumeric 16 #endif 17 18 #if defined(PETSC_HAVE_FORTRAN_UNDERSCORE_UNDERSCORE) 19 #define petsc_null_function_ petsc_null_function__ 20 #endif 21 22 PETSC_EXTERN void PETSC_STDCALL petscsetcommonblock_(MPI_Fint*,MPI_Fint*); 23 PETSC_EXTERN void PETSC_STDCALL petscsetcommonblockmpi_(MPI_Fint*,MPI_Fint*,MPI_Fint*); 24 PETSC_EXTERN void PETSC_STDCALL petscsetcommonblocknumeric_(PetscReal*,PetscReal*,PetscReal*,PetscReal*,PetscReal*,PetscReal*,PetscReal*,PetscReal*); 25 26 /*@C 27 PetscInitializeFortran - Routine that should be called soon AFTER 28 the call to PetscInitialize() if one is using a C main program 29 that calls Fortran routines that in turn call PETSc routines. 30 31 Collective on PETSC_COMM_WORLD 32 33 Level: beginner 34 35 Notes: 36 PetscInitializeFortran() initializes some of the default viewers, 37 communicators, etc. for use in the Fortran if a user's main program is 38 written in C. PetscInitializeFortran() is NOT needed if a user's main 39 program is written in Fortran; in this case, just calling 40 PetscInitialize() in the main (Fortran) program is sufficient. 41 42 .seealso: PetscInitialize() 43 44 .keywords: Mixing C and Fortran, passing PETSc objects to Fortran 45 @*/ 46 PetscErrorCode PetscInitializeFortran(void) 47 { 48 MPI_Fint c1=0,c2=0; 49 50 if (PETSC_COMM_WORLD) c1 = MPI_Comm_c2f(PETSC_COMM_WORLD); 51 c2 = MPI_Comm_c2f(PETSC_COMM_SELF); 52 petscsetcommonblock_(&c1,&c2); 53 54 #if defined(PETSC_USE_REAL___FLOAT128) 55 { 56 MPI_Fint freal,fscalar,fsum; 57 freal = MPI_Type_c2f(MPIU_REAL); 58 fscalar = MPI_Type_c2f(MPIU_SCALAR); 59 fsum = MPI_Op_c2f(MPIU_SUM); 60 petscsetcommonblockmpi_(&freal,&fscalar,&fsum); 61 } 62 #endif 63 64 { 65 PetscReal pi = PETSC_PI; 66 PetscReal maxreal = PETSC_MAX_REAL; 67 PetscReal minreal = PETSC_MIN_REAL; 68 PetscReal eps = PETSC_MACHINE_EPSILON; 69 PetscReal seps = PETSC_SQRT_MACHINE_EPSILON; 70 PetscReal small = PETSC_SMALL; 71 PetscReal pinf = PETSC_INFINITY; 72 PetscReal pninf = PETSC_NINFINITY; 73 petscsetcommonblocknumeric_(&pi,&maxreal,&minreal,&eps,&seps,&small,&pinf,&pninf); 74 } 75 return 0; 76 } 77 78 PETSC_EXTERN void PETSC_STDCALL petscinitializefortran_(int *ierr) 79 { 80 *ierr = PetscInitializeFortran(); 81 } 82 83 PETSC_EXTERN void PETSC_STDCALL petscsetfortranbasepointers_(char *fnull_character PETSC_MIXED_LEN(len), 84 void *fnull_integer,void *fnull_scalar,void * fnull_double, 85 void *fnull_real,void *fnull_object, 86 void* fnull_truth,void (*fnull_function)(void) PETSC_END_LEN(len)) 87 { 88 PETSC_NULL_CHARACTER_Fortran = fnull_character; 89 PETSC_NULL_INTEGER_Fortran = fnull_integer; 90 PETSC_NULL_SCALAR_Fortran = fnull_scalar; 91 PETSC_NULL_DOUBLE_Fortran = fnull_double; 92 PETSC_NULL_REAL_Fortran = fnull_real; 93 PETSC_NULL_OBJECT_Fortran = fnull_object; 94 PETSC_NULL_BOOL_Fortran = fnull_truth; 95 PETSC_NULL_FUNCTION_Fortran = fnull_function; 96 } 97 98 /* 99 A valid address for the fortran variable PETSC_NULL_FUNCTION 100 */ 101 PETSC_EXTERN void petsc_null_function_(void) 102 { 103 return; 104 } 105 106 107