Class brown_function_model

dlib/test/optimization_test_functions.h:101–126

        matrix<double,4,1> brown_solution ();

        class brown_function_model 
        {
        public:

            // Define the type used to represent column vectors
            typedef matrix<double,4,1> column_vector;
            // Define the type used to represent the hessian matrix
            typedef matrix<double> general_matrix;

            double operator() ( 
                const column_vector& x
            ) const
            {
                return brown(x);
            }

            void get_derivative_and_hessian (
                const column_vector& x,
                column_vector& d,
                general_matrix& h
            ) const
            {
                d = brown_derivative(x);
                h = brown_hessian(x);
            }
        };

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