17   PC_MG_Levels *mgc, *mglevels = *mglevelsin;  in PCMGMCycle_Private()  local
65     mgc = *(mglevelsin - 1);  in PCMGMCycle_Private()
68       if (matapp) PetscCall(MatMatRestrict(mglevels->restrct, mglevels->R, &mgc->B));  in PCMGMCycle_Private()
69       else PetscCall(MatRestrict(mglevels->restrct, mglevels->r, mgc->b));  in PCMGMCycle_Private()
71       if (matapp) PetscCall(MatMatRestrict(mglevels->interpolate, mglevels->R, &mgc->B));  in PCMGMCycle_Private()
72       else PetscCall(MatRestrict(mglevels->interpolate, mglevels->r, mgc->b));  in PCMGMCycle_Private()
76       if (!mgc->X) {  in PCMGMCycle_Private()
77         PetscCall(MatDuplicate(mgc->B, MAT_DO_NOT_COPY_VALUES, &mgc->X));  in PCMGMCycle_Private()
79         PetscCall(MatZeroEntries(mgc->X));  in PCMGMCycle_Private()
82       PetscCall(VecZeroEntries(mgc->x));  in PCMGMCycle_Private()
87 …if (matapp) PetscCall(MatMatInterpolateAdd(mglevels->interpolate, mgc->X, mglevels->X, &mglevels->…  in PCMGMCycle_Private()
88       else PetscCall(MatInterpolateAdd(mglevels->interpolate, mgc->x, mglevels->x, mglevels->x));  in PCMGMCycle_Private()
90       PetscCall(MatInterpolateAdd(mglevels->restrct, mgc->x, mglevels->x, mglevels->x));  in PCMGMCycle_Private()