1 /* Copyright (c) 2007-2014 Massachusetts Institute of Technology
3 * Permission is hereby granted, free of charge, to any person obtaining
4 * a copy of this software and associated documentation files (the
5 * "Software"), to deal in the Software without restriction, including
6 * without limitation the rights to use, copy, modify, merge, publish,
7 * distribute, sublicense, and/or sell copies of the Software, and to
8 * permit persons to whom the Software is furnished to do so, subject to
9 * the following conditions:
11 * The above copyright notice and this permission notice shall be
12 * included in all copies or substantial portions of the Software.
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
15 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
16 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
17 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
18 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
19 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
20 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
23 #include <octave/oct.h>
24 #include <octave/oct-map.h>
25 #include <octave/ov.h>
26 #include <octave/parse.h>
31 #include "nlopt_optimize_usage.h"
33 static int struct_val_default(octave_map &m, const std::string& k,
37 if (m.contents(k).length() == 1 && (m.contents(k))(0).is_real_scalar())
38 return (m.contents(k))(0).int_value();
43 static double struct_val_default(octave_map &m, const std::string& k,
47 if (m.contents(k).length() == 1 && (m.contents(k))(0).is_real_scalar())
48 return (m.contents(k))(0).double_value();
53 static Matrix struct_val_default(octave_map &m, const std::string& k,
57 if ((m.contents(k)).length() == 1) {
58 if ((m.contents(k))(0).is_real_scalar())
59 return Matrix(1, dflt.length(), (m.contents(k))(0).double_value());
60 else if ((m.contents(k))(0).is_real_matrix())
61 return (m.contents(k))(0).matrix_value();
73 static double user_function(unsigned n, const double *x,
74 double *gradient, /* NULL if not needed */
77 user_function_data *data = (user_function_data *) data_;
78 octave_value_list args(1, 0);
80 for (unsigned i = 0; i < n; ++i)
84 #if (OCTAVE_MAJOR_VERSION == 4 && OCTAVE_MINOR_VERSION > 2)
85 = octave::feval(data->f, args, gradient ? 2 : 1);
87 = data->f->do_multi_index_op(gradient ? 2 : 1, args);
89 if (res.length() < (gradient ? 2 : 1))
90 gripe_user_supplied_eval("nlopt_optimize");
91 else if (!res(0).is_real_scalar()
92 || (gradient && !res(1).is_real_matrix()
93 && !(n == 1 && res(1).is_real_scalar())))
94 gripe_user_returned_invalid("nlopt_optimize");
97 if (n == 1 && res(1).is_real_scalar())
98 gradient[0] = res(1).double_value();
100 Matrix grad = res(1).matrix_value();
101 for (unsigned i = 0; i < n; ++i)
102 gradient[i] = grad(i);
106 if (data->verbose) printf("nlopt_optimize eval #%d: %g\n",
107 data->neval, res(0).double_value());
108 double f = res(0).double_value();
109 if (f != f /* isnan(f) */) nlopt_force_stop(data->opt);
115 static double user_function1(unsigned n, const double *x,
116 double *gradient, /* NULL if not needed */
119 octave_function *f = (octave_function *) data_;
120 octave_value_list args(1, 0);
122 for (unsigned i = 0; i < n; ++i)
125 octave_value_list res
126 #if (OCTAVE_MAJOR_VERSION == 4 && OCTAVE_MINOR_VERSION > 2)
127 = octave::feval(f, args, gradient ? 2 : 1);
129 = f->do_multi_index_op(gradient ? 2 : 1, args);
131 if (res.length() < (gradient ? 2 : 1))
132 gripe_user_supplied_eval("nlopt_optimize");
133 else if (!res(0).is_real_scalar()
134 || (gradient && !res(1).is_real_matrix()
135 && !(n == 1 && res(1).is_real_scalar())))
136 gripe_user_returned_invalid("nlopt_optimize");
139 if (n == 1 && res(1).is_real_scalar())
140 gradient[0] = res(1).double_value();
142 Matrix grad = res(1).matrix_value();
143 for (unsigned i = 0; i < n; ++i)
144 gradient[i] = grad(i);
147 return res(0).double_value();
152 #define CHECK1(cond, msg) if (!(cond)) { fprintf(stderr, msg "\n\n"); nlopt_destroy(opt); nlopt_destroy(local_opt); return NULL; }
154 nlopt_opt make_opt(octave_map &opts, int n)
156 nlopt_opt opt = NULL, local_opt = NULL;
158 nlopt_algorithm algorithm =
159 nlopt_algorithm(struct_val_default(opts, "algorithm",
160 NLOPT_NUM_ALGORITHMS));
161 CHECK1(((int)algorithm) >= 0 && algorithm < NLOPT_NUM_ALGORITHMS,
162 "invalid opt.algorithm");
164 opt = nlopt_create(algorithm, n);
165 CHECK1(opt, "nlopt: out of memory");
167 Matrix m_inf(1, n, -HUGE_VAL);
168 Matrix lb = struct_val_default(opts, "lower_bounds", m_inf);
169 CHECK1(n == lb.length(), "wrong length of opt.lower_bounds");
170 CHECK1(nlopt_set_lower_bounds(opt, lb.data()) > 0, "nlopt: out of memory");
172 Matrix p_inf(1, n, +HUGE_VAL);
173 Matrix ub = struct_val_default(opts, "upper_bounds", p_inf);
174 CHECK1(n == ub.length(), "wrong length of opt.upper_bounds");
175 CHECK1(nlopt_set_upper_bounds(opt, ub.data()) > 0, "nlopt: out of memory");
177 nlopt_set_stopval(opt, struct_val_default(opts, "stopval", -HUGE_VAL));
178 nlopt_set_ftol_rel(opt, struct_val_default(opts, "ftol_rel", 0.0));
179 nlopt_set_ftol_abs(opt, struct_val_default(opts, "ftol_abs", 0.0));
180 nlopt_set_xtol_rel(opt, struct_val_default(opts, "xtol_rel", 0.0));
183 Matrix zeros(1, n, 0.0);
184 Matrix xtol_abs = struct_val_default(opts, "xtol_abs", zeros);
185 CHECK1(n == xtol_abs.length(), "stop.xtol_abs must have same length as x");
186 CHECK1(nlopt_set_xtol_abs(opt, xtol_abs.data())>0, "nlopt: out of memory");
189 nlopt_set_maxeval(opt, struct_val_default(opts, "maxeval", 0) < 0 ?
190 0 : struct_val_default(opts, "maxeval", 0));
191 nlopt_set_maxtime(opt, struct_val_default(opts, "maxtime", 0.0));
193 nlopt_set_population(opt, struct_val_default(opts, "population", 0));
194 nlopt_set_vector_storage(opt, struct_val_default(opts, "vector_storage", 0));
196 if (opts.contains("initial_step")) {
197 Matrix zeros(1, n, 0.0);
198 Matrix initial_step = struct_val_default(opts, "initial_step", zeros);
199 CHECK1(n == initial_step.length(),
200 "stop.initial_step must have same length as x");
201 CHECK1(nlopt_set_initial_step(opt, initial_step.data()) > 0,
202 "nlopt: out of memory");
205 if (opts.contains("local_optimizer")) {
206 CHECK1(opts.contents("local_optimizer").length() == 1
207 && (opts.contents("local_optimizer"))(0).is_map(),
208 "opt.local_optimizer must be a structure");
209 octave_map local_opts = (opts.contents("local_optimizer"))(0).map_value();
210 CHECK1((local_opt = make_opt(local_opts, n)),
211 "error initializing local optimizer");
212 nlopt_set_local_optimizer(opt, local_opt);
213 nlopt_destroy(local_opt); local_opt = NULL;
219 #define CHECK(cond, msg) if (!(cond)) { fprintf(stderr, msg "\n\n"); nlopt_destroy(opt); return retval; }
221 DEFUN_DLD(nlopt_optimize, args, nargout, NLOPT_OPTIMIZE_USAGE)
223 octave_value_list retval;
225 nlopt_opt opt = NULL;
227 CHECK(args.length() == 2 && nargout <= 3, "wrong number of args");
229 CHECK(args(0).is_map(), "opt must be structure")
230 octave_map opts = args(0).map_value();
232 CHECK(args(1).is_real_matrix() || args(1).is_real_scalar(),
233 "x must be real vector");
234 Matrix x = args(1).is_real_scalar() ?
235 Matrix(1, 1, args(1).double_value()) : args(1).matrix_value();
238 CHECK((opt = make_opt(opts, n)), "error initializing nlopt options");
240 user_function_data d;
242 d.verbose = struct_val_default(opts, "verbose", 0);
244 if (opts.contains("min_objective")) {
245 CHECK(opts.contents("min_objective").length() == 1
246 && (opts.contents("min_objective"))(0).is_function_handle(),
247 "opt.min_objective must be a function");
248 d.f = (opts.contents("min_objective"))(0).function_value();
249 nlopt_set_min_objective(opt, user_function, &d);
251 else if (opts.contains("max_objective")) {
252 CHECK(opts.contents("max_objective").length() == 1
253 && (opts.contents("max_objective"))(0).is_function_handle(),
254 "opt.max_objective must be a function");
255 d.f = (opts.contents("max_objective"))(0).function_value();
256 nlopt_set_max_objective(opt, user_function, &d);
259 CHECK(0,"either opt.min_objective or opt.max_objective must exist");
262 if (opts.contains("fc") && opts.contents("fc").length() == 1) {
263 CHECK((opts.contents("fc"))(0).is_cell(), "opt.fc must be cell array");
264 Cell fc = (opts.contents("fc"))(0).cell_value();
265 Matrix zeros(1, fc.length(), 0.0);
266 Matrix fc_tol = struct_val_default(opts, "fc_tol", zeros);
267 CHECK(fc_tol.length() == fc.length(),
268 "opt.fc must have same length as opt.fc_tol");
269 for (int i = 0; i < fc.length(); ++i) {
270 CHECK(fc(i).is_function() || fc(i).is_function_handle(),
271 "opt.fc must be a cell array of function handles");
272 CHECK(nlopt_add_inequality_constraint(opt, user_function1,
273 fc(i).function_value(),
275 "nlopt error adding inequality constraint");
279 if (opts.contains("h") && opts.contents("h").length() == 1) {
280 CHECK((opts.contents("h"))(0).is_cell(), "opt.h must be cell array");
281 Cell h = (opts.contents("h"))(0).cell_value();
282 Matrix zeros(1, h.length(), 0.0);
283 Matrix h_tol = struct_val_default(opts, "h_tol", zeros);
284 CHECK(h_tol.length() == h.length(),
285 "opt.h must have same length as opt.h_tol");
286 for (int i = 0; i < h.length(); ++i) {
287 CHECK(h(i).is_function() || h(i).is_function_handle(),
288 "opt.h must be a cell array of function handles");
289 CHECK(nlopt_add_equality_constraint(opt, user_function1,
290 h(i).function_value(),
292 "nlopt error adding equality constraint");
298 nlopt_result ret = nlopt_optimize(opt, x.fortran_vec(), &opt_f);
304 retval(2) = int(ret);