1 2 #include <petsc/private/fortranimpl.h> 3 4 #if defined(PETSC_HAVE_FORTRAN_CAPS) 5 #define petscinitializefortran_ PETSCINITIALIZEFORTRAN 6 #define petscsetmoduleblock_ PETSCSETMODULEBLOCK 7 #define petscsetfortranbasepointers_ PETSCSETFORTRANBASEPOINTERS 8 #define petsc_null_function_ PETSC_NULL_FUNCTION 9 #define petscsetmoduleblocknumeric_ PETSCSETMODULEBLOCKNUMERIC 10 #define petscsetcomm_ PETSCSETCOMM 11 #elif !defined(PETSC_HAVE_FORTRAN_UNDERSCORE) 12 #define petscinitializefortran_ petscinitializefortran 13 #define petscsetmoduleblock_ petscsetmoduleblock 14 #define petscsetfortranbasepointers_ petscsetfortranbasepointers 15 #define petsc_null_function_ petsc_null_function 16 #define petscsetmoduleblocknumeric_ petscsetmoduleblocknumeric 17 #define petscsetcomm_ petscsetcomm 18 #endif 19 20 #if defined(PETSC_HAVE_FORTRAN_UNDERSCORE_UNDERSCORE) 21 #define petsc_null_function_ petsc_null_function__ 22 #endif 23 24 PETSC_EXTERN void PETSC_STDCALL petscsetmoduleblock_(); 25 PETSC_EXTERN void PETSC_STDCALL petscsetmoduleblockmpi_(MPI_Fint*,MPI_Fint*,MPI_Fint*); 26 PETSC_EXTERN void PETSC_STDCALL petscsetmoduleblocknumeric_(PetscReal*,PetscReal*,PetscReal*,PetscReal*,PetscReal*,PetscReal*,PetscReal*,PetscReal*); 27 PETSC_EXTERN void PETSC_STDCALL petscsetcomm_(MPI_Fint*,MPI_Fint*); 28 29 /*@C 30 PetscInitializeFortran - Routine that should be called soon AFTER 31 the call to PetscInitialize() if one is using a C main program 32 that calls Fortran routines that in turn call PETSc routines. 33 34 Collective on PETSC_COMM_WORLD 35 36 Level: beginner 37 38 Notes: 39 PetscInitializeFortran() initializes some of the default viewers, 40 communicators, etc. for use in the Fortran if a user's main program is 41 written in C. PetscInitializeFortran() is NOT needed if a user's main 42 program is written in Fortran; in this case, just calling 43 PetscInitialize() in the main (Fortran) program is sufficient. 44 45 .seealso: PetscInitialize() 46 47 .keywords: Mixing C and Fortran, passing PETSc objects to Fortran 48 @*/ 49 PetscErrorCode PetscInitializeFortran(void) 50 { 51 MPI_Fint c1=0,c2=0; 52 53 if (PETSC_COMM_WORLD) c1 = MPI_Comm_c2f(PETSC_COMM_WORLD); 54 c2 = MPI_Comm_c2f(PETSC_COMM_SELF); 55 petscsetmoduleblock_(); 56 petscsetcomm_(&c1,&c2); 57 58 #if defined(PETSC_USE_REAL___FLOAT128) 59 { 60 MPI_Fint freal,fscalar,fsum; 61 freal = MPI_Type_c2f(MPIU_REAL); 62 fscalar = MPI_Type_c2f(MPIU_SCALAR); 63 fsum = MPI_Op_c2f(MPIU_SUM); 64 petscsetmoduleblockmpi_(&freal,&fscalar,&fsum); 65 } 66 #endif 67 68 { 69 PetscReal pi = PETSC_PI; 70 PetscReal maxreal = PETSC_MAX_REAL; 71 PetscReal minreal = PETSC_MIN_REAL; 72 PetscReal eps = PETSC_MACHINE_EPSILON; 73 PetscReal seps = PETSC_SQRT_MACHINE_EPSILON; 74 PetscReal small = PETSC_SMALL; 75 PetscReal pinf = PETSC_INFINITY; 76 PetscReal pninf = PETSC_NINFINITY; 77 petscsetmoduleblocknumeric_(&pi,&maxreal,&minreal,&eps,&seps,&small,&pinf,&pninf); 78 } 79 return 0; 80 } 81 82 PETSC_EXTERN void PETSC_STDCALL petscinitializefortran_(int *ierr) 83 { 84 *ierr = PetscInitializeFortran(); 85 } 86 87 PETSC_EXTERN void PETSC_STDCALL petscsetfortranbasepointers_(char *fnull_character PETSC_MIXED_LEN(len), 88 void *fnull_integer,void *fnull_scalar,void * fnull_double, 89 void *fnull_real, 90 void* fnull_truth,void (*fnull_function)(void) PETSC_END_LEN(len)) 91 { 92 PETSC_NULL_CHARACTER_Fortran = fnull_character; 93 PETSC_NULL_INTEGER_Fortran = fnull_integer; 94 PETSC_NULL_SCALAR_Fortran = fnull_scalar; 95 PETSC_NULL_DOUBLE_Fortran = fnull_double; 96 PETSC_NULL_REAL_Fortran = fnull_real; 97 PETSC_NULL_BOOL_Fortran = fnull_truth; 98 PETSC_NULL_FUNCTION_Fortran = fnull_function; 99 } 100 101 /* 102 A valid address for the fortran variable PETSC_NULL_FUNCTION 103 */ 104 PETSC_EXTERN void petsc_null_function_(void) 105 { 106 return; 107 } 108 109 110