/// <summary>
        /// Constructor for creating a new Ipopt Problem object.  This function
        /// returns an object that can be passed to the IpoptSolve call.  It
        /// contains the basic definition of the optimization problem, such
        /// as number of variables and constraints, bounds on variables and
        /// constraints, information about the derivatives, and the callback
        /// function for the computation of the optimization problem
        /// functions and derivatives.  During this call, the options file
        /// PARAMS.DAT is read as well.
        /// </summary>
        /// <param name="n">Number of optimization variables</param>
        /// <param name="x_L">Lower bounds on variables. This array of size n is copied internally, so that the
        /// caller can change the incoming data after return without that IpoptProblem is modified.  Any value
        /// less or equal than the number specified by option 'nlp_lower_bound_inf' is interpreted to be minus infinity.</param>
        /// <param name="x_U">Upper bounds on variables. This array of size n is copied internally, so that the
        /// caller can change the incoming data after return without that IpoptProblem is modified.  Any value
        /// greater or equal than the number specified by option 'nlp_upper_bound_inf' is interpreted to be plus infinity.</param>
        /// <param name="m">Number of constraints.</param>
        /// <param name="g_L">Lower bounds on constraints. This array of size m is copied internally, so that the
        /// caller can change the incoming data after return without that IpoptProblem is modified.  Any value
        /// less or equal than the number specified by option 'nlp_lower_bound_inf' is interpreted to be minus infinity.</param>
        /// <param name="g_U">Upper bounds on constraints. This array of size m is copied internally, so that the
        /// caller can change the incoming data after return without that IpoptProblem is modified.  Any value
        /// greater or equal than the number specified by option 'nlp_upper_bound_inf' is interpreted to be plus infinity.</param>
        /// <param name="nele_jac">Number of non-zero elements in constraint Jacobian.</param>
        /// <param name="nele_hess">Number of non-zero elements in Hessian of Lagrangian.</param>
        /// <param name="eval_f">Callback function for evaluating objective function</param>
        /// <param name="eval_g">Callback function for evaluating constraint functions</param>
        /// <param name="eval_grad_f">Callback function for evaluating gradient of objective function</param>
        /// <param name="eval_jac_g">Callback function for evaluating Jacobian of constraint functions</param>
        /// <param name="eval_h">Callback function for evaluating Hessian of Lagrangian function</param>
        public Ipopt(int n, double[] x_L, double[] x_U, int m, double[] g_L, double[] g_U, int nele_jac, int nele_hess,
                     EvaluateObjectiveDelegate eval_f, EvaluateConstraintsDelegate eval_g, EvaluateObjectiveGradientDelegate eval_grad_f,
                     EvaluateJacobianDelegate eval_jac_g, EvaluateHessianDelegate eval_h)
        {
            unsafe
            {
                fixed(double *p_x_L = x_L, p_x_U = x_U, p_g_L = g_L, p_g_U = g_U)
                {
                    m_eval_f       = new ObjectiveEvaluator(eval_f).Evaluate;
                    m_eval_g       = new ConstraintsEvaluator(eval_g).Evaluate;
                    m_eval_grad_f  = new ObjectiveGradientEvaluator(eval_grad_f).Evaluate;
                    m_eval_jac_g   = new JacobianEvaluator(eval_jac_g).Evaluate;
                    m_eval_h       = new HessianEvaluator(eval_h).Evaluate;
                    m_intermediate = null;

                    m_problem = CreateIpoptProblem(n, p_x_L, p_x_U, m, p_g_L, p_g_U, nele_jac, nele_hess, 0,
                                                   m_eval_f, m_eval_g, m_eval_grad_f, m_eval_jac_g, m_eval_h);

                    if (m_problem == IntPtr.Zero)
                    {
                        throw new ArgumentException("Failed to initialize IPOPT problem");
                    }
                }
            }

            m_disposed = false;
        }
Beispiel #2
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        /// <summary>
        /// Constructor for creating a new Ipopt Problem object using managed
        /// function delegates.  This function
        /// initializes an object that can be passed to the IpoptSolve call.  It
        /// contains the basic definition of the optimization problem, such
        /// as number of variables and constraints, bounds on variables and
        /// constraints, information about the derivatives, and the callback
        /// function for the computation of the optimization problem
        /// functions and derivatives.  During this call, the options file
        /// ipopt.opt is read as well.
        /// </summary>
        /// <param name="n">Number of optimization variables</param>
        /// <param name="x_L">Lower bounds on variables. This array of size n is copied internally, so that the
        /// caller can change the incoming data after return without that IpoptProblem is modified.  Any value
        /// less or equal than the number specified by option 'nlp_lower_bound_inf' is interpreted to be minus infinity.</param>
        /// <param name="x_U">Upper bounds on variables. This array of size n is copied internally, so that the
        /// caller can change the incoming data after return without that IpoptProblem is modified.  Any value
        /// greater or equal than the number specified by option 'nlp_upper_bound_inf' is interpreted to be plus infinity.</param>
        /// <param name="m">Number of constraints.</param>
        /// <param name="g_L">Lower bounds on constraints. This array of size m is copied internally, so that the
        /// caller can change the incoming data after return without that IpoptProblem is modified.  Any value
        /// less or equal than the number specified by option 'nlp_lower_bound_inf' is interpreted to be minus infinity.</param>
        /// <param name="g_U">Upper bounds on constraints. This array of size m is copied internally, so that the
        /// caller can change the incoming data after return without that IpoptProblem is modified.  Any value
        /// greater or equal than the number specified by option 'nlp_upper_bound_inf' is interpreted to be plus infinity.</param>
        /// <param name="nele_jac">Number of non-zero elements in constraint Jacobian.</param>
        /// <param name="nele_hess">Number of non-zero elements in Hessian of Lagrangian.</param>
        /// <param name="eval_f_cb">Managed callback function for evaluating objective function</param>
        /// <param name="eval_g_cb">Managed callback function for evaluating constraint functions</param>
        /// <param name="eval_grad_f_cb">Managed callback function for evaluating gradient of objective function</param>
        /// <param name="eval_jac_g_cb">Managed callback function for evaluating Jacobian of constraint functions</param>
        /// <param name="eval_h_cb">Managed callback function for evaluating Hessian of Lagrangian function</param>
        public IpoptProblem(int n, double[] x_L, double[] x_U, int m, double[] g_L, double[] g_U, int nele_jac, int nele_hess,
                            EvaluateObjectiveDelegate eval_f_cb, EvaluateConstraintsDelegate eval_g_cb, EvaluateObjectiveGradientDelegate eval_grad_f_cb,
                            EvaluateJacobianDelegate eval_jac_g_cb, EvaluateHessianDelegate eval_h_cb)
        {
            m_eval_f_cb       = new ObjectiveEvaluator(eval_f_cb).Evaluate;
            m_eval_g_cb       = new ConstraintsEvaluator(eval_g_cb).Evaluate;
            m_eval_grad_f_cb  = new ObjectiveGradientEvaluator(eval_grad_f_cb).Evaluate;
            m_eval_jac_g_cb   = new JacobianEvaluator(eval_jac_g_cb).Evaluate;
            m_eval_h_cb       = new HessianEvaluator(eval_h_cb).Evaluate;
            m_intermediate_cb = null;

            m_problem = IpoptAdapter.CreateIpoptProblem(n, x_L, x_U, m, g_L, g_U, nele_jac, nele_hess, IpoptIndexStyle.C,
                                                        m_eval_f_cb, m_eval_g_cb, m_eval_grad_f_cb, m_eval_jac_g_cb, m_eval_h_cb);

            m_disposed = false;
        }
Beispiel #3
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        /// <summary>
        /// Constructor for creating a new Ipopt Problem object using managed 
        /// function delegates.  This function
        /// initializes an object that can be passed to the IpoptSolve call.  It
        /// contains the basic definition of the optimization problem, such
        /// as number of variables and constraints, bounds on variables and
        /// constraints, information about the derivatives, and the callback
        /// function for the computation of the optimization problem
        /// functions and derivatives.  During this call, the options file
        /// ipopt.opt is read as well.
        /// </summary>
        /// <param name="n">Number of optimization variables</param>
        /// <param name="x_L">Lower bounds on variables. This array of size n is copied internally, so that the
        /// caller can change the incoming data after return without that IpoptProblem is modified.  Any value 
        /// less or equal than the number specified by option 'nlp_lower_bound_inf' is interpreted to be minus infinity.</param>
        /// <param name="x_U">Upper bounds on variables. This array of size n is copied internally, so that the
        /// caller can change the incoming data after return without that IpoptProblem is modified.  Any value 
        /// greater or equal than the number specified by option 'nlp_upper_bound_inf' is interpreted to be plus infinity.</param>
        /// <param name="m">Number of constraints.</param>
        /// <param name="g_L">Lower bounds on constraints. This array of size m is copied internally, so that the
        /// caller can change the incoming data after return without that IpoptProblem is modified.  Any value 
        /// less or equal than the number specified by option 'nlp_lower_bound_inf' is interpreted to be minus infinity.</param>
        /// <param name="g_U">Upper bounds on constraints. This array of size m is copied internally, so that the
        /// caller can change the incoming data after return without that IpoptProblem is modified.  Any value 
        /// greater or equal than the number specified by option 'nlp_upper_bound_inf' is interpreted to be plus infinity.</param>
        /// <param name="nele_jac">Number of non-zero elements in constraint Jacobian.</param>
        /// <param name="nele_hess">Number of non-zero elements in Hessian of Lagrangian.</param>
        /// <param name="eval_f_cb">Managed callback function for evaluating objective function</param>
        /// <param name="eval_g_cb">Managed callback function for evaluating constraint functions</param>
        /// <param name="eval_grad_f_cb">Managed callback function for evaluating gradient of objective function</param>
        /// <param name="eval_jac_g_cb">Managed callback function for evaluating Jacobian of constraint functions</param>
        /// <param name="eval_h_cb">Managed callback function for evaluating Hessian of Lagrangian function</param>
        public IpoptProblem(int n, double[] x_L, double[] x_U, int m, double[] g_L, double[] g_U, int nele_jac, int nele_hess,
            EvaluateObjectiveDelegate eval_f_cb, EvaluateConstraintsDelegate eval_g_cb, EvaluateObjectiveGradientDelegate eval_grad_f_cb,
            EvaluateJacobianDelegate eval_jac_g_cb, EvaluateHessianDelegate eval_h_cb)
        {
            m_eval_f_cb = new ObjectiveEvaluator(eval_f_cb).Evaluate;
            m_eval_g_cb = new ConstraintsEvaluator(eval_g_cb).Evaluate;
            m_eval_grad_f_cb = new ObjectiveGradientEvaluator(eval_grad_f_cb).Evaluate;
            m_eval_jac_g_cb = new JacobianEvaluator(eval_jac_g_cb).Evaluate;
            m_eval_h_cb = new HessianEvaluator(eval_h_cb).Evaluate;
            m_intermediate_cb = null;

            m_problem = IpoptAdapter.CreateIpoptProblem(n, x_L, x_U, m, g_L, g_U, nele_jac, nele_hess, IpoptIndexStyle.C,
                m_eval_f_cb, m_eval_g_cb, m_eval_grad_f_cb, m_eval_jac_g_cb, m_eval_h_cb);

            m_disposed = false;
        }
Beispiel #4
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 internal ObjectiveEvaluator(EvaluateObjectiveDelegate eval_f_cb)
 {
     m_eval_f_cb = eval_f_cb;
 }
Beispiel #5
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 internal ObjectiveEvaluator(EvaluateObjectiveDelegate eval_f_cb)
 {
     m_eval_f_cb = eval_f_cb;
 }
 internal ObjectiveEvaluator(EvaluateObjectiveDelegate eval_f)
 {
     m_eval_f = eval_f;
 }