14   Mat_CompositeLink     head, tail;  member
104   Mat_CompositeLink tail;  in MatMultTranspose_Composite_Multiplicative()  local
109   tail = shell->tail;  in MatMultTranspose_Composite_Multiplicative()
110 …PetscCheck(tail, PETSC_COMM_SELF, PETSC_ERR_ARG_WRONGSTATE, "Must provide at least one matrix with…  in MatMultTranspose_Composite_Multiplicative()
111   while (tail->prev) {  in MatMultTranspose_Composite_Multiplicative()
112     if (!tail->prev->work) { /* should reuse previous work if the same size */  in MatMultTranspose_Composite_Multiplicative()
113       PetscCall(MatCreateVecs(tail->mat, NULL, &tail->prev->work));  in MatMultTranspose_Composite_Multiplicative()
115     out = tail->prev->work;  in MatMultTranspose_Composite_Multiplicative()
116     PetscCall(MatMultTranspose(tail->mat, x, out));  in MatMultTranspose_Composite_Multiplicative()
118     tail = tail->prev;  in MatMultTranspose_Composite_Multiplicative()
120   PetscCall(MatMultTranspose(tail->mat, x, y));  in MatMultTranspose_Composite_Multiplicative()
422   shell->tail = ilink;  in MatCompositeAddMat_Composite()
664   prev = shell->tail;  in MatCompositeMerge_Composite()