+
+/* Not a O(1) function */
+
+void lmm_update(lmm_system_t sys, lmm_constraint_t cnst,
+ lmm_variable_t var, double value)
+{
+ int i;
+
+ sys->modified = 1;
+ for (i = 0; i < var->cnsts_number; i++)
+ if (var->cnsts[i].constraint == cnst) {
+ var->cnsts[i].value = value;
+ return;
+ }
+}
+
+void lmm_update_variable_bound(lmm_system_t sys, lmm_variable_t var,
+ double bound)
+{
+ sys->modified = 1;
+ var->bound = bound;
+}
+
+void lmm_update_variable_weight(lmm_system_t sys, lmm_variable_t var,
+ double weight)
+{
+ int i ;
+ lmm_element_t elem;
+
+ sys->modified = 1;
+ var->weight = weight;
+ xbt_swag_remove(var,&(sys->variable_set));
+ if(weight) xbt_swag_insert_at_head(var,&(sys->variable_set));
+ else xbt_swag_insert_at_tail(var,&(sys->variable_set));
+
+ for (i = 0; i < var->cnsts_number; i++) {
+ elem = &var->cnsts[i];
+ xbt_swag_remove(elem, &(elem->constraint->element_set));
+ if(weight) xbt_swag_insert_at_head(elem, &(elem->constraint->element_set));
+ else xbt_swag_insert_at_tail(elem, &(elem->constraint->element_set));
+ }
+}
+
+double lmm_get_variable_weight(lmm_variable_t var)
+
+{
+ return var->weight;
+}
+
+void lmm_update_constraint_bound(lmm_system_t sys, lmm_constraint_t cnst,
+ double bound)
+{
+ sys->modified = 1;
+ cnst->bound = bound;
+}
+
+int lmm_constraint_used(lmm_system_t sys, lmm_constraint_t cnst)
+{
+ return xbt_swag_belongs(cnst, &(sys->active_constraint_set));
+}
+
+lmm_constraint_t lmm_get_first_active_constraint(lmm_system_t sys)
+{
+ return xbt_swag_getFirst(&(sys->active_constraint_set));
+}
+
+lmm_constraint_t lmm_get_next_active_constraint(lmm_system_t sys, lmm_constraint_t cnst)
+{
+ return xbt_swag_getNext(cnst,(sys->active_constraint_set).offset);
+}
+
+
+/* void lmm_print(lmm_system_t sys) */
+/* { */
+/* lmm_variable_t var = NULL; */
+/* lmm_constraint_t cnst = NULL; */
+/* lmm_element_t elem = NULL; */
+/* xbt_swag_t cnst_list = NULL; */
+/* xbt_swag_t var_list = NULL; */
+/* xbt_swag_t elem_list = NULL; */
+
+/* var_list = &(sys->variable_set); */
+/* xbt_swag_foreach(var, var_list) { */
+/* printf("%s : {\n",var->id); */
+/* printf("\t %s : {\n",var->id); */
+/* } */
+/* } */