Lines Matching defs:_p_MatMFFD

28 struct _p_MatMFFD {  struct
30   Vec              w;         /* work vector */
31   PetscReal        error_rel; /* square root of relative error in computing function */
32   PetscScalar      currenth;  /* last differencing parameter h used */
33   PetscScalar     *historyh;  /* history of differencing parameter h */
34   PetscInt         ncurrenth, maxcurrenth;
35   void            *hctx;
36   Mat              mat;             /* back reference to shell matrix that contains this */
37   PetscInt         recomputeperiod; /* how often the h is recomputed; default to 1 */
38   PetscInt         count;           /* used by recomputeperiod */
39   MatMFFDCheckhFn *checkh;
40   void            *checkhctx; /* optional context used by MatMFFDSetCheckh() */
42   MatMFFDFn *func;      /* function used for matrix-free */
43   void      *funcctx;   /* the context for the function */
44   Vec        current_f; /* location of F(u); used with F(u+h) */
45   PetscBool  current_f_allocated;
46   Vec        current_u; /* location of u; used with F(u+h) */
48   MatMFFDiFn     *funci;        /* Evaluates func_[i]() */
49   MatMFFDiBaseFn *funcisetbase; /* Sets base for future evaluations of func_[i]() */
51   PetscCtx ctx; /* this is used by MatCreateSNESMF() to store the SNES object */
53 …etscBool usecomplex; /* use the Lyness complex number trick to compute the matrix-vector product */