645   Vec              Yslow, Yslowbuffer, Yfast;  in TSStep_MPRK()  local
662     PetscCall(VecGetSubVector(Y[i], mprk->is_slowbuffer, &Yslowbuffer));  in TSStep_MPRK()
663     PetscCall(VecMAXPY(Yslowbuffer, i, wsb, mprk->YdotRHS_slowbuffer));  in TSStep_MPRK()
664     PetscCall(VecRestoreSubVector(Y[i], mprk->is_slowbuffer, &Yslowbuffer));  in TSStep_MPRK()
791 …Vec              Yslow, Yslowbuffer, Yfast; /* subvectors for slow and fast components in Y[i] res…  in TSStep_MPRKSPLIT()  local
809         PetscCall(VecGetSubVector(Y[i], mprk->is_slowbuffer, &Yslowbuffer));  in TSStep_MPRKSPLIT()
810         PetscCall(VecISCopy(Y[tab->rmb[i] - 1], mprk->is_slowbuffer, SCATTER_REVERSE, Yslowbuffer));  in TSStep_MPRKSPLIT()
811         PetscCall(VecRestoreSubVector(Y[i], mprk->is_slowbuffer, &Yslowbuffer));  in TSStep_MPRKSPLIT()
819         PetscCall(VecGetSubVector(Y[i], mprk->is_slowbuffer, &Yslowbuffer));  in TSStep_MPRKSPLIT()
820         PetscCall(VecMAXPY(Yslowbuffer, computedstages, wm, YdotRHS_slowbuffer));  in TSStep_MPRKSPLIT()
821         PetscCall(VecRestoreSubVector(Y[i], mprk->is_slowbuffer, &Yslowbuffer));  in TSStep_MPRKSPLIT()
824       PetscCall(VecGetSubVector(Y[i], mprk->is_slowbuffer, &Yslowbuffer));  in TSStep_MPRKSPLIT()
825       PetscCall(VecMAXPY(Yslowbuffer, i, wsb, YdotRHS_slowbuffer));  in TSStep_MPRKSPLIT()
826       PetscCall(VecRestoreSubVector(Y[i], mprk->is_slowbuffer, &Yslowbuffer));  in TSStep_MPRKSPLIT()