5:  #include src/ksp/pc/impls/is/pcis.h

  7: /* 
  8:    Private context (data structure) for the NN preconditioner.  
  9: */
 10: typedef struct {
 11:   /* First MUST come the folowing line, for the stuff that is common to FETI and Neumann-Neumann. */
 12:   PC_IS         pcis;
 13:   /* Then, everything else. */
 14:   Mat           coarse_mat;
 15:   Vec           coarse_x;
 16:   Vec           coarse_b;
 17:   KSP          ksp_coarse;
 18:   PetscScalar   **DZ_IN;          /* proc[k].DZ_IN[i][] = bit of vector to be received from processor i by proc. k  */
 19:   PetscScalar   factor_coarse_rhs;
 20: } PC_NN;

 22: EXTERN PetscErrorCode PCNNCreateCoarseMatrix (PC);
 23: EXTERN PetscErrorCode PCNNApplySchurToChunk(PC pc,PetscInt n,PetscInt* idx,PetscScalar *chunk,PetscScalar* array_N,Vec vec1_B,Vec vec2_B,Vec vec1_D,Vec vec2_D);
 24: EXTERN PetscErrorCode PCNNApplyInterfacePreconditioner (PC pc,Vec r,Vec z,PetscScalar* work_N,Vec vec1_B,Vec vec2_B,
 25:                                              Vec vec3_B,Vec vec1_D,Vec vec2_D,Vec vec1_N,Vec vec2_N);
 26: EXTERN PetscErrorCode PCNNBalancing(PC pc,Vec r,Vec u,Vec z,Vec vec1_B,Vec vec2_B,Vec vec3_B,Vec vec1_D,Vec vec2_D,PetscScalar *work_N);

 28: #endif /* __pcnn_h */