2: #ifndef _VIEWERIMPL
  3: #define _VIEWERIMPL

  5: #include <petscsys.h>

  7: struct _PetscViewerOps {
  8:    PetscErrorCode (*destroy)(PetscViewer);
  9:    PetscErrorCode (*view)(PetscViewer,PetscViewer);
 10:    PetscErrorCode (*flush)(PetscViewer);
 11:    PetscErrorCode (*getsingleton)(PetscViewer,PetscViewer*);
 12:    PetscErrorCode (*restoresingleton)(PetscViewer,PetscViewer*);
 13:    PetscErrorCode (*getsubcomm)(PetscViewer,MPI_Comm,PetscViewer*);
 14:    PetscErrorCode (*restoresubcomm)(PetscViewer,MPI_Comm,PetscViewer*);
 15:    PetscErrorCode (*setfromoptions)(PetscViewer);
 16: };

 18: /*
 19:    Defines the viewer data structure.
 20: */
 21: struct _p_PetscViewer {
 22:   PETSCHEADER(struct _PetscViewerOps);
 23:   PetscViewerFormat format,formats[10];
 24:   int               iformat;
 25:   void              *data;
 26: };



 30: #endif