1 #include <private/fortranimpl.h> 2 #include <petscpc.h> 3 #include <petscpcmg.h> 4 5 #if defined(PETSC_HAVE_FORTRAN_CAPS) 6 #define pcmgsetresidual_ PCMGSETRESIDUAL 7 #define pcmgdefaultresidual_ PCMGDEFAULTRESIDUAL 8 #elif !defined(PETSC_HAVE_FORTRAN_UNDERSCORE) 9 #define pcmgsetresidual_ pcmgsetresidual 10 #define pcmgdefaultresidual_ pcmgdefaultresidual 11 #endif 12 13 typedef PetscErrorCode (*MVVVV)(Mat,Vec,Vec,Vec); 14 static PetscErrorCode ourresidualfunction(Mat mat,Vec b,Vec x,Vec R) 15 { 16 PetscErrorCode ierr = 0; 17 (*(void (PETSC_STDCALL *)(Mat*,Vec*,Vec*,Vec*,PetscErrorCode*))(((PetscObject)mat)->fortran_func_pointers[0]))(&mat,&b,&x,&R,&ierr); 18 return 0; 19 } 20 21 EXTERN_C_BEGIN 22 void pcmgdefaultresidual_(Mat *mat,Vec *b,Vec *x,Vec *r, PetscErrorCode *ierr) 23 { 24 *ierr = PCMGDefaultResidual(*mat,*b,*x,*r); 25 } 26 27 void PETSC_STDCALL pcmgsetresidual_(PC *pc,PetscInt *l,PetscErrorCode (*residual)(Mat*,Vec*,Vec*,Vec*,PetscErrorCode*),Mat *mat, PetscErrorCode *ierr) 28 { 29 MVVVV rr; 30 if ((PetscVoidFunction)residual == (PetscVoidFunction)pcmgdefaultresidual_) rr = PCMGDefaultResidual; 31 else { 32 PetscObjectAllocateFortranPointers(*mat,1); 33 /* Attach the residual computer to the Mat, this is not ideal but the only object/context passed in the residual computer */ 34 ((PetscObject)*mat)->fortran_func_pointers[0] = (PetscVoidFunction)residual; 35 rr = ourresidualfunction; 36 } 37 *ierr = PCMGSetResidual(*pc,*l,rr,*mat); 38 } 39 40 EXTERN_C_END 41