+void lmm_expand_add(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) break;
+
+ if(i<var->cnsts_number) var->cnsts[i].value +=value;
+ else lmm_expand(sys,cnst,var,value);
+}
+
+lmm_constraint_t lmm_get_cnst_from_var(lmm_system_t sys,
+ lmm_variable_t var, int num)
+{
+ if (num < var->cnsts_number)
+ return (var->cnsts[num].constraint);
+ else
+ return NULL;
+}
+
+int lmm_get_number_of_cnst_from_var(lmm_system_t sys, lmm_variable_t var)
+{
+ return (var->cnsts_number);
+}
+
+lmm_variable_t lmm_get_var_from_cnst(lmm_system_t sys,
+ lmm_constraint_t cnst,
+ lmm_variable_t * var)
+{
+ if (!(*var))
+ xbt_swag_getFirst(&(cnst->element_set));
+ else
+ *var = xbt_swag_getNext(*var, cnst->element_set.offset);
+ return *var;
+}
+
+void *lmm_constraint_id(lmm_constraint_t cnst)
+{
+ return cnst->id;
+}
+
+void *lmm_variable_id(lmm_variable_t var)
+{
+ return var->id;
+}
+
+static void saturated_constraint_set_update(lmm_system_t sys,
+ lmm_constraint_t cnst,
+ double *min_usage)