5:  #include <petsc/private/matimpl.h>

  7: typedef struct {
  8:   PetscInt ndim;
  9:   PetscInt *dim;
 10:   PetscInt n,N;         /* local and global size of the transform */
 11:   void     *data;       /* implementation-specific data for subclass */

 13:   PetscErrorCode (*matdestroy)(Mat);
 14: } Mat_FFT;

 16: PETSC_EXTERN PetscErrorCode MatCreate_FFTW(Mat);

 18: #endif