- lmm_element_t elem = NULL;
- xbt_swag_t cnst_list = NULL;
- xbt_swag_t var_list = NULL;
- xbt_swag_t elem_list = NULL;
+ lmm_element_t elem = nullptr;
+ xbt_swag_t cnst_list = nullptr;
+ xbt_swag_t var_list = nullptr;
+ xbt_swag_t elem_list = nullptr;