+static XBT_INLINE void lmm_cnst_free(lmm_system_t sys, lmm_constraint_t cnst);
+
+void lmm_print(lmm_system_t sys);
+
+extern double (*func_f_def) (lmm_variable_t, double);
+extern double (*func_fp_def) (lmm_variable_t, double);
+extern double (*func_fpi_def) (lmm_variable_t, double);