/** Default functions associated to the chosen protocol. When using the lagrangian approach. */
-XBT_PUBLIC void set_default_protocol_function(double (*func_f)(const Variable& var, double x),
- double (*func_fp)(const Variable& var, double x),
- double (*func_fpi)(const Variable& var, double x));
-
XBT_PUBLIC double func_reno_f(const Variable& var, double x);
XBT_PUBLIC double func_reno_fp(const Variable& var, double x);
XBT_PUBLIC double func_reno_fpi(const Variable& var, double x);
/* \begin{For Lagrange only} */
double mu;
double new_mu;
- double (*func_f)(const Variable& var, double x); /* (f) */
- double (*func_fp)(const Variable& var, double x); /* (f') */
- double (*func_fpi)(const Variable& var, double x); /* (f')^{-1} */
/* \end{For Lagrange only} */
private:
explicit Lagrange(bool selective_update) : System(selective_update) {}
void solve() final { lagrange_solve(); }
+ static void set_default_protocol_function(double (*func_f)(const Variable& var, double x),
+ double (*func_fp)(const Variable& var, double x),
+ double (*func_fpi)(const Variable& var, double x));
+
private:
void lagrange_solve();
bool check_feasible(bool warn);
double dual_objective();
+
+ static double (*func_f)(const Variable& var, double x); /* (f) */
+ static double (*func_fp)(const Variable& var, double x); /* (f') */
+ static double (*func_fpi)(const Variable& var, double x); /* (f')^{-1} */
+
+ /*
+ * Local prototypes to implement the Lagrangian optimization with optimal step, also called dichotomy.
+ */
+ // computes the value of the dichotomy using a initial values, init, with a specific variable or constraint
+ static double dichotomy(double init, double diff(double, const Constraint&), const Constraint& cnst,
+ double min_error);
+ // computes the value of the differential of constraint cnst applied to lambda
+ static double partial_diff_lambda(double lambda, const Constraint& cnst);
+
+ static double new_value(const Variable& var);
+ static double new_mu(const Variable& var);
};
XBT_PUBLIC System* make_new_maxmin_system(bool selective_update);
XBT_PUBLIC System* make_new_fair_bottleneck_system(bool selective_update);
XBT_PUBLIC System* make_new_lagrange_system(bool selective_update);
-extern XBT_PRIVATE double (*func_f_def)(const Variable&, double);
-extern XBT_PRIVATE double (*func_fp_def)(const Variable&, double);
-extern XBT_PRIVATE double (*func_fpi_def)(const Variable&, double);
-
/** @} */
}
}