+ int index; /* FOR SDP ONLY */
+ /* \begin{For Lagrange only} */
+ double mu;
+ double new_mu;
+ double df; /* Total delay of flow */
+ double (* func_f) (struct lmm_variable *var, double x); /* (f) */
+ double (* func_fp) (struct lmm_variable *var, double x); /* (f') */
+ double (* func_fpi) (struct lmm_variable *var, double x); /* (f')^{-1} */
+ /* \end{For Lagrange only} */