- xbt_maxmin_float_t value;
-} s_lmm_element_t, *lmm_element_t;
-#define insert_elem_in_constraint(elem) xbt_swag_insert(elem,&(elem->constraint->element_set))
-#define insert_active_elem_in_constraint(elem) xbt_swag_insert(elem,&(elem->constraint->active_element_set))
-#define remove_active_elem_in_constraint(elem) xbt_swag_remove(elem,&(elem->constraint->active_element_set))
+ double value;
+} s_lmm_element_t;
+#define make_elem_active(elem) xbt_swag_insert_at_head(elem,&(elem->constraint->active_element_set))
+#define make_elem_inactive(elem) xbt_swag_remove(elem,&(elem->constraint->active_element_set))