+void lmm_system_free(lmm_system_t sys);
+void lmm_variable_disable(lmm_system_t sys, lmm_variable_t var);
+
+lmm_constraint_t lmm_constraint_new(lmm_system_t sys, void *id,
+ double bound_value);
+void lmm_constraint_free(lmm_system_t sys, lmm_constraint_t cnst);
+
+lmm_variable_t lmm_variable_new(lmm_system_t sys, void *id,
+ double weight_value,
+ double bound, int number_of_constraints);
+void lmm_variable_free(lmm_system_t sys, lmm_variable_t var);
+double lmm_variable_getvalue(lmm_variable_t var);
+
+
+void lmm_expand(lmm_system_t sys, lmm_constraint_t cnst,
+ lmm_variable_t var, double value);
+
+lmm_constraint_t lmm_get_cnst_from_var(lmm_system_t sys,
+ lmm_variable_t var, int num);
+int lmm_get_number_of_cnst_from_var(lmm_system_t sys, lmm_variable_t var);
+lmm_variable_t lmm_get_var_from_cnst(lmm_system_t sys,
+ lmm_constraint_t cnst,
+ lmm_variable_t * var);
+
+void *lmm_constraint_id(lmm_constraint_t cnst);
+void *lmm_variable_id(lmm_variable_t var);
+
+void lmm_update(lmm_system_t sys, lmm_constraint_t cnst,
+ lmm_variable_t var, double value);
+void lmm_update_variable_bound(lmm_system_t sys, lmm_variable_t var,
+ double bound);
+void lmm_update_variable_weight(lmm_system_t sys, lmm_variable_t var,
+ double weight);
+double lmm_get_variable_weight(lmm_system_t sys, lmm_variable_t var);