1 #ifndef _SNES_FASIMPLS 2 #define _SNES_FASIMPLS 3 4 #include <private/snesimpl.h> 5 #include <private/dmimpl.h> 6 7 typedef struct { 8 9 /* flags for knowing the global place of this FAS object */ 10 PetscInt level; /* level = 0 coarsest level */ 11 PetscInt levels; /* if level + 1 = levels; we're the last turtle */ 12 13 14 /* smoothing objects */ 15 SNES upsmooth; /* the SNES for presmoothing */ 16 SNES downsmooth; /* the SNES for postsmoothing */ 17 18 /* coarse grid correction objects */ 19 SNES next; /* the SNES instance for the next level in the hierarchy */ 20 Mat interpolate; /* interpolation */ 21 Mat restrct; /* restriction operator */ 22 Vec rscale; /* the pointwise scaling of the restriction operator */ 23 24 /* method parameters */ 25 PetscInt n_cycles; /* number of cycles on this level */ 26 PetscInt max_up_it; /* number of pre-smooths */ 27 PetscInt max_down_it; /* number of post-smooth cycles */ 28 29 } SNES_FAS; 30 31 #endif 32