+XBT_PUBLIC(double) lmm_variable_getvalue(lmm_variable_t var);
+XBT_PUBLIC(double) lmm_variable_getbound(lmm_variable_t var);
+
+XBT_PUBLIC(void) lmm_expand(lmm_system_t sys, lmm_constraint_t cnst,
+ lmm_variable_t var, double value);
+void lmm_expand_add(lmm_system_t sys, lmm_constraint_t cnst,
+ lmm_variable_t var, double value);
+void lmm_elem_set_value(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);
+double lmm_get_cnst_weight_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_element_t * elem);
+
+lmm_constraint_t lmm_get_first_active_constraint(lmm_system_t sys);
+lmm_constraint_t lmm_get_next_active_constraint(lmm_system_t sys,
+ lmm_constraint_t cnst);
+#ifdef HAVE_LATENCY_BOUND_TRACKING
+XBT_PUBLIC(int) lmm_is_variable_limited_by_latency(lmm_variable_t var);
+#endif
+
+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);
+
+
+XBT_PUBLIC(void) lmm_update_variable_weight(lmm_system_t sys,
+ lmm_variable_t var,
+ double weight);
+double lmm_get_variable_weight(lmm_variable_t var);
+
+XBT_PUBLIC(void) lmm_update_constraint_bound(lmm_system_t sys,
+ lmm_constraint_t cnst,
+ double bound);
+
+int lmm_constraint_used(lmm_system_t sys, lmm_constraint_t cnst);
+
+
+XBT_PUBLIC(void) lmm_solve(lmm_system_t sys);
+
+XBT_PUBLIC(void) lagrange_solve(lmm_system_t sys);
+XBT_PUBLIC(void) bottleneck_solve(lmm_system_t sys);
+
+/**
+ * Default functions associated to the chosen protocol. When
+ * using the lagrangian approach.
+ */
+
+XBT_PUBLIC(void) lmm_set_default_protocol_function(double (*func_f)
+ (lmm_variable_t var,
+ double x),
+ double (*func_fp)
+ (lmm_variable_t var,
+ double x),
+ double (*func_fpi)
+ (lmm_variable_t var,
+ double x));
+
+XBT_PUBLIC(double func_reno_f) (lmm_variable_t var, double x);
+XBT_PUBLIC(double func_reno_fp) (lmm_variable_t var, double x);
+XBT_PUBLIC(double func_reno_fpi) (lmm_variable_t var, double x);
+
+XBT_PUBLIC(double func_reno2_f) (lmm_variable_t var, double x);
+XBT_PUBLIC(double func_reno2_fp) (lmm_variable_t var, double x);
+XBT_PUBLIC(double func_reno2_fpi) (lmm_variable_t var, double x);
+
+XBT_PUBLIC(double func_vegas_f) (lmm_variable_t var, double x);
+XBT_PUBLIC(double func_vegas_fp) (lmm_variable_t var, double x);
+XBT_PUBLIC(double func_vegas_fpi) (lmm_variable_t var, double x);
+