16   CeedOperator        op_setup, op_diff, op_diff_assembled;  in main()  local
97   CeedOperatorCreate(ceed, qf_diff, CEED_QFUNCTION_NONE, CEED_QFUNCTION_NONE, &op_diff);  in main()
98   CeedOperatorSetField(op_diff, "du", elem_restriction_u, basis_u, CEED_VECTOR_ACTIVE);  in main()
99   CeedOperatorSetField(op_diff, "q data", elem_restriction_q_data, CEED_BASIS_NONE, q_data);  in main()
100   CeedOperatorSetField(op_diff, "dv", elem_restriction_u, basis_u, CEED_VECTOR_ACTIVE);  in main()
103   CeedOperatorApply(op_diff, u, v, CEED_REQUEST_IMMEDIATE);  in main()
106   CeedOperatorSetQFunctionAssemblyReuse(op_diff, true);  in main()
107 …CeedOperatorLinearAssembleQFunctionBuildOrUpdate(op_diff, &assembled, &elem_restriction_assembled,…  in main()
109   CeedOperatorSetQFunctionAssemblyDataUpdateNeeded(op_diff, false);  in main()
110 …CeedOperatorLinearAssembleQFunctionBuildOrUpdate(op_diff, &assembled, &elem_restriction_assembled,…  in main()
161   CeedOperatorDestroy(&op_diff);  in main()