pub type FIntermediate_CB = unsafe extern "C" fn(alg_mode: *const Index, iter_count: *const Index, obj_value: *const Number, inf_pr: *const Number, inf_du: *const Number, mu: *const Number, d_norm: *const Number, regu_size: *const Number, alpha_du: *const Number, alpha_pr: *const Number, ls_trial: *const Index, idat: *mut Index, ddat: *mut Number, istop: *mut Index);