1: #define PETSCMAT_DLL 2: #include src/mat/impls/aij/mpi/mpiaij.h 7: PetscErrorCode MatGetDiagonalBlock_MPIAIJ(Mat A,PetscTruth *iscopy,MatReuse reuse,Mat *a) 8: { 10: *a = ((Mat_MPIAIJ *)A->data)->A; 11: *iscopy = PETSC_FALSE; 12: return(0); 13: }