422 lines
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422 lines
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<div class="headertitle"><div class="title">gurobi_solver.h</div></div>
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<a href="gurobi__solver_8h.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a id="l00001" name="l00001"></a><span class="lineno"> 1</span><span class="comment">// Copyright 2010-2021 Google LLC</span></div>
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<div class="line"><a id="l00002" name="l00002"></a><span class="lineno"> 2</span><span class="comment">// Licensed under the Apache License, Version 2.0 (the "License");</span></div>
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<div class="line"><a id="l00003" name="l00003"></a><span class="lineno"> 3</span><span class="comment">// you may not use this file except in compliance with the License.</span></div>
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<div class="line"><a id="l00004" name="l00004"></a><span class="lineno"> 4</span><span class="comment">// You may obtain a copy of the License at</span></div>
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<div class="line"><a id="l00005" name="l00005"></a><span class="lineno"> 5</span><span class="comment">//</span></div>
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<div class="line"><a id="l00006" name="l00006"></a><span class="lineno"> 6</span><span class="comment">// http://www.apache.org/licenses/LICENSE-2.0</span></div>
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<div class="line"><a id="l00007" name="l00007"></a><span class="lineno"> 7</span><span class="comment">//</span></div>
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<div class="line"><a id="l00008" name="l00008"></a><span class="lineno"> 8</span><span class="comment">// Unless required by applicable law or agreed to in writing, software</span></div>
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<div class="line"><a id="l00009" name="l00009"></a><span class="lineno"> 9</span><span class="comment">// distributed under the License is distributed on an "AS IS" BASIS,</span></div>
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<div class="line"><a id="l00010" name="l00010"></a><span class="lineno"> 10</span><span class="comment">// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span></div>
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<div class="line"><a id="l00011" name="l00011"></a><span class="lineno"> 11</span><span class="comment">// See the License for the specific language governing permissions and</span></div>
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<div class="line"><a id="l00012" name="l00012"></a><span class="lineno"> 12</span><span class="comment">// limitations under the License.</span></div>
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<div class="line"><a id="l00013" name="l00013"></a><span class="lineno"> 13</span> </div>
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<div class="line"><a id="l00014" name="l00014"></a><span class="lineno"> 14</span><span class="preprocessor">#ifndef OR_TOOLS_MATH_OPT_SOLVERS_GUROBI_SOLVER_H_</span></div>
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<div class="line"><a id="l00015" name="l00015"></a><span class="lineno"> 15</span><span class="preprocessor">#define OR_TOOLS_MATH_OPT_SOLVERS_GUROBI_SOLVER_H_</span></div>
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<div class="line"><a id="l00016" name="l00016"></a><span class="lineno"> 16</span> </div>
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<div class="line"><a id="l00017" name="l00017"></a><span class="lineno"> 17</span><span class="preprocessor">#include <cstdint></span></div>
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<div class="line"><a id="l00018" name="l00018"></a><span class="lineno"> 18</span><span class="preprocessor">#include <limits></span></div>
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<div class="line"><a id="l00019" name="l00019"></a><span class="lineno"> 19</span><span class="preprocessor">#include <memory></span></div>
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<div class="line"><a id="l00020" name="l00020"></a><span class="lineno"> 20</span><span class="preprocessor">#include <optional></span></div>
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<div class="line"><a id="l00021" name="l00021"></a><span class="lineno"> 21</span><span class="preprocessor">#include <string></span></div>
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<div class="line"><a id="l00022" name="l00022"></a><span class="lineno"> 22</span><span class="preprocessor">#include <utility></span></div>
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<div class="line"><a id="l00023" name="l00023"></a><span class="lineno"> 23</span><span class="preprocessor">#include <vector></span></div>
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<div class="line"><a id="l00024" name="l00024"></a><span class="lineno"> 24</span> </div>
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<div class="line"><a id="l00025" name="l00025"></a><span class="lineno"> 25</span><span class="preprocessor">#include "absl/status/status.h"</span></div>
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<div class="line"><a id="l00026" name="l00026"></a><span class="lineno"> 26</span><span class="preprocessor">#include "absl/status/statusor.h"</span></div>
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<div class="line"><a id="l00027" name="l00027"></a><span class="lineno"> 27</span><span class="preprocessor">#include "absl/strings/string_view.h"</span></div>
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<div class="line"><a id="l00028" name="l00028"></a><span class="lineno"> 28</span><span class="preprocessor">#include "absl/time/time.h"</span></div>
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<div class="line"><a id="l00029" name="l00029"></a><span class="lineno"> 29</span><span class="preprocessor">#include "absl/types/span.h"</span></div>
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<div class="line"><a id="l00030" name="l00030"></a><span class="lineno"> 30</span><span class="preprocessor">#include "<a class="code" href="linked__hash__map_8h.html">ortools/base/linked_hash_map.h</a>"</span></div>
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<div class="line"><a id="l00031" name="l00031"></a><span class="lineno"> 31</span><span class="preprocessor">#include "<a class="code" href="base_2logging_8h.html">ortools/base/logging.h</a>"</span></div>
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<div class="line"><a id="l00032" name="l00032"></a><span class="lineno"> 32</span><span class="preprocessor">#include "<a class="code" href="environment_8h.html">ortools/gurobi/environment.h</a>"</span></div>
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<div class="line"><a id="l00033" name="l00033"></a><span class="lineno"> 33</span><span class="preprocessor">#include "ortools/math_opt/callback.pb.h"</span></div>
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<div class="line"><a id="l00034" name="l00034"></a><span class="lineno"> 34</span><span class="preprocessor">#include "<a class="code" href="inverted__bounds_8h.html">ortools/math_opt/core/inverted_bounds.h</a>"</span></div>
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<div class="line"><a id="l00035" name="l00035"></a><span class="lineno"> 35</span><span class="preprocessor">#include "<a class="code" href="solve__interrupter_8h.html">ortools/math_opt/core/solve_interrupter.h</a>"</span></div>
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<div class="line"><a id="l00036" name="l00036"></a><span class="lineno"> 36</span><span class="preprocessor">#include "<a class="code" href="solver__interface_8h.html">ortools/math_opt/core/solver_interface.h</a>"</span></div>
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<div class="line"><a id="l00037" name="l00037"></a><span class="lineno"> 37</span><span class="preprocessor">#include "ortools/math_opt/model.pb.h"</span></div>
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<div class="line"><a id="l00038" name="l00038"></a><span class="lineno"> 38</span><span class="preprocessor">#include "ortools/math_opt/model_parameters.pb.h"</span></div>
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<div class="line"><a id="l00039" name="l00039"></a><span class="lineno"> 39</span><span class="preprocessor">#include "ortools/math_opt/model_update.pb.h"</span></div>
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<div class="line"><a id="l00040" name="l00040"></a><span class="lineno"> 40</span><span class="preprocessor">#include "ortools/math_opt/parameters.pb.h"</span></div>
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<div class="line"><a id="l00041" name="l00041"></a><span class="lineno"> 41</span><span class="preprocessor">#include "ortools/math_opt/result.pb.h"</span></div>
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<div class="line"><a id="l00042" name="l00042"></a><span class="lineno"> 42</span><span class="preprocessor">#include "ortools/math_opt/solution.pb.h"</span></div>
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<div class="line"><a id="l00043" name="l00043"></a><span class="lineno"> 43</span><span class="preprocessor">#include "<a class="code" href="g__gurobi_8h.html">ortools/math_opt/solvers/gurobi/g_gurobi.h</a>"</span></div>
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<div class="line"><a id="l00044" name="l00044"></a><span class="lineno"> 44</span><span class="preprocessor">#include "<a class="code" href="gurobi__callback_8h.html">ortools/math_opt/solvers/gurobi_callback.h</a>"</span></div>
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<div class="line"><a id="l00045" name="l00045"></a><span class="lineno"> 45</span><span class="preprocessor">#include "<a class="code" href="message__callback__data_8h.html">ortools/math_opt/solvers/message_callback_data.h</a>"</span></div>
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<div class="line"><a id="l00046" name="l00046"></a><span class="lineno"> 46</span><span class="preprocessor">#include "ortools/math_opt/sparse_containers.pb.h"</span></div>
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<div class="line"><a id="l00047" name="l00047"></a><span class="lineno"> 47</span> </div>
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<div class="line"><a id="l00048" name="l00048"></a><span class="lineno"> 48</span><span class="keyword">namespace </span><a class="code hl_namespace" href="namespaceoperations__research.html">operations_research</a> {</div>
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<div class="line"><a id="l00049" name="l00049"></a><span class="lineno"> 49</span><span class="keyword">namespace </span><a class="code hl_namespace" href="namespaceoperations__research_1_1math__opt.html">math_opt</a> {</div>
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<div class="line"><a id="l00050" name="l00050"></a><span class="lineno"> 50</span> </div>
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<div class="line"><a id="l00051" name="l00051"></a><span class="lineno"><a class="line" href="classoperations__research_1_1math__opt_1_1_gurobi_solver.html"> 51</a></span><span class="keyword">class </span><a class="code hl_class" href="classoperations__research_1_1math__opt_1_1_gurobi_solver.html">GurobiSolver</a> : <span class="keyword">public</span> <a class="code hl_class" href="classoperations__research_1_1math__opt_1_1_solver_interface.html">SolverInterface</a> {</div>
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<div class="line"><a id="l00052" name="l00052"></a><span class="lineno"> 52</span> <span class="keyword">public</span>:</div>
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<div class="line"><a id="l00053" name="l00053"></a><span class="lineno"> 53</span> <span class="keyword">static</span> absl::StatusOr<std::unique_ptr<GurobiSolver>> <a class="code hl_function" href="classoperations__research_1_1math__opt_1_1_gurobi_solver.html#a73909f7e8ae986fafa92070c5298634e">New</a>(</div>
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<div class="line"><a id="l00054" name="l00054"></a><span class="lineno"> 54</span> <span class="keyword">const</span> ModelProto& input_model,</div>
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<div class="line"><a id="l00055" name="l00055"></a><span class="lineno"> 55</span> <span class="keyword">const</span> <a class="code hl_struct" href="structoperations__research_1_1math__opt_1_1_solver_interface_1_1_init_args.html">SolverInterface::InitArgs</a>& init_args);</div>
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<div class="line"><a id="l00056" name="l00056"></a><span class="lineno"> 56</span> </div>
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<div class="line"><a id="l00057" name="l00057"></a><span class="lineno"> 57</span> absl::StatusOr<SolveResultProto> <a class="code hl_function" href="classoperations__research_1_1math__opt_1_1_gurobi_solver.html#a7875bc8ab28e1cf6cefc688d7b70ac7e">Solve</a>(</div>
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<div class="line"><a id="l00058" name="l00058"></a><span class="lineno"> 58</span> <span class="keyword">const</span> SolveParametersProto& <a class="code hl_variable" href="cp__model__fz__solver_8cc.html#a10a1eab179b472c030bdc2a2efef7219">parameters</a>,</div>
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<div class="line"><a id="l00059" name="l00059"></a><span class="lineno"> 59</span> <span class="keyword">const</span> ModelSolveParametersProto& model_parameters,</div>
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<div class="line"><a id="l00060" name="l00060"></a><span class="lineno"> 60</span> <a class="code hl_typedef" href="classoperations__research_1_1math__opt_1_1_solver_interface.html#aad3360b1947c772bebf3d3cfb2105a15">MessageCallback</a> message_cb,</div>
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<div class="line"><a id="l00061" name="l00061"></a><span class="lineno"> 61</span> <span class="keyword">const</span> CallbackRegistrationProto& callback_registration, <a class="code hl_typedef" href="classoperations__research_1_1math__opt_1_1_solver_interface.html#ab47a61ca53ae9cdf35dd4f2dfc9ecadb">Callback</a> cb,</div>
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<div class="line"><a id="l00062" name="l00062"></a><span class="lineno"> 62</span> <a class="code hl_class" href="classoperations__research_1_1math__opt_1_1_solve_interrupter.html">SolveInterrupter</a>* interrupter) <span class="keyword">override</span>;</div>
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<div class="line"><a id="l00063" name="l00063"></a><span class="lineno"> 63</span> absl::Status <a class="code hl_function" href="classoperations__research_1_1math__opt_1_1_gurobi_solver.html#a4dc835d3171da48778de1bbea39f8448">Update</a>(<span class="keyword">const</span> ModelUpdateProto& model_update) <span class="keyword">override</span>;</div>
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<div class="line"><a id="l00064" name="l00064"></a><span class="lineno"> 64</span> <span class="keywordtype">bool</span> <a class="code hl_function" href="classoperations__research_1_1math__opt_1_1_gurobi_solver.html#a1dcbb1374e91747a2db097361b091c8b">CanUpdate</a>(<span class="keyword">const</span> ModelUpdateProto& model_update) <span class="keyword">override</span>;</div>
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<div class="line"><a id="l00065" name="l00065"></a><span class="lineno"> 65</span> </div>
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<div class="line"><a id="l00066" name="l00066"></a><span class="lineno"> 66</span> <span class="keyword">private</span>:</div>
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<div class="line"><a id="l00067" name="l00067"></a><span class="lineno"> 67</span> <span class="keyword">struct </span>GurobiCallbackData {</div>
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<div class="line"><a id="l00068" name="l00068"></a><span class="lineno"> 68</span> <span class="keyword">explicit</span> GurobiCallbackData(<a class="code hl_struct" href="structoperations__research_1_1math__opt_1_1_gurobi_callback_input.html">GurobiCallbackInput</a> callback_input,</div>
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<div class="line"><a id="l00069" name="l00069"></a><span class="lineno"> 69</span> <a class="code hl_class" href="classoperations__research_1_1math__opt_1_1_solve_interrupter.html">SolveInterrupter</a>* <span class="keyword">const</span> local_interrupter)</div>
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<div class="line"><a id="l00070" name="l00070"></a><span class="lineno"> 70</span> : callback_input(std::move(callback_input)),</div>
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<div class="line"><a id="l00071" name="l00071"></a><span class="lineno"> 71</span> local_interrupter(local_interrupter) {}</div>
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<div class="line"><a id="l00072" name="l00072"></a><span class="lineno"> 72</span> <span class="keyword">const</span> <a class="code hl_struct" href="structoperations__research_1_1math__opt_1_1_gurobi_callback_input.html">GurobiCallbackInput</a> callback_input;</div>
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<div class="line"><a id="l00073" name="l00073"></a><span class="lineno"> 73</span> </div>
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<div class="line"><a id="l00074" name="l00074"></a><span class="lineno"> 74</span> <span class="comment">// Interrupter triggered when either the user interrupter passed to Solve()</span></div>
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<div class="line"><a id="l00075" name="l00075"></a><span class="lineno"> 75</span> <span class="comment">// is triggered or after one user callback returned a true `terminate`.</span></div>
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<div class="line"><a id="l00076" name="l00076"></a><span class="lineno"> 76</span> <span class="comment">//</span></div>
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<div class="line"><a id="l00077" name="l00077"></a><span class="lineno"> 77</span> <span class="comment">// This is not the user interrupter though so it safe for callbacks to</span></div>
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<div class="line"><a id="l00078" name="l00078"></a><span class="lineno"> 78</span> <span class="comment">// trigger it.</span></div>
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<div class="line"><a id="l00079" name="l00079"></a><span class="lineno"> 79</span> <span class="comment">//</span></div>
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<div class="line"><a id="l00080" name="l00080"></a><span class="lineno"> 80</span> <span class="comment">// It is optional; it is not null when either we have a LP/MIP callback or a</span></div>
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<div class="line"><a id="l00081" name="l00081"></a><span class="lineno"> 81</span> <span class="comment">// user interrupter. But it can be null if we only have a message callback.</span></div>
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<div class="line"><a id="l00082" name="l00082"></a><span class="lineno"> 82</span> <a class="code hl_class" href="classoperations__research_1_1math__opt_1_1_solve_interrupter.html">SolveInterrupter</a>* <span class="keyword">const</span> local_interrupter;</div>
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<div class="line"><a id="l00083" name="l00083"></a><span class="lineno"> 83</span> </div>
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<div class="line"><a id="l00084" name="l00084"></a><span class="lineno"> 84</span> <a class="code hl_class" href="classoperations__research_1_1math__opt_1_1_message_callback_data.html">MessageCallbackData</a> message_callback_data;</div>
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<div class="line"><a id="l00085" name="l00085"></a><span class="lineno"> 85</span> </div>
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<div class="line"><a id="l00086" name="l00086"></a><span class="lineno"> 86</span> absl::Status <a class="code hl_variable" href="g__gurobi_8cc.html#a2237393c7ae7ad7344c9885066d5ab6d">status</a> = absl::OkStatus();</div>
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<div class="line"><a id="l00087" name="l00087"></a><span class="lineno"> 87</span> };</div>
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<div class="line"><a id="l00088" name="l00088"></a><span class="lineno"> 88</span> </div>
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<div class="line"><a id="l00089" name="l00089"></a><span class="lineno"> 89</span> <span class="keyword">explicit</span> <a class="code hl_class" href="classoperations__research_1_1math__opt_1_1_gurobi_solver.html">GurobiSolver</a>(std::unique_ptr<Gurobi> g_gurobi);</div>
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<div class="line"><a id="l00090" name="l00090"></a><span class="lineno"> 90</span> </div>
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<div class="line"><a id="l00091" name="l00091"></a><span class="lineno"> 91</span> <span class="comment">// For easing reading the code, we declare these types:</span></div>
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<div class="line"><a id="l00092" name="l00092"></a><span class="lineno"> 92</span> <span class="keyword">using</span> VariableId = int64_t;</div>
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<div class="line"><a id="l00093" name="l00093"></a><span class="lineno"> 93</span> <span class="keyword">using</span> LinearConstraintId = int64_t;</div>
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<div class="line"><a id="l00094" name="l00094"></a><span class="lineno"> 94</span> <span class="keyword">using</span> GurobiVariableIndex = int;</div>
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<div class="line"><a id="l00095" name="l00095"></a><span class="lineno"> 95</span> <span class="keyword">using</span> GurobiLinearConstraintIndex = int;</div>
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<div class="line"><a id="l00096" name="l00096"></a><span class="lineno"> 96</span> </div>
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<div class="line"><a id="l00097" name="l00097"></a><span class="lineno"> 97</span> <span class="keyword">static</span> <span class="keyword">constexpr</span> GurobiVariableIndex kUnspecifiedIndex = -1;</div>
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<div class="line"><a id="l00098" name="l00098"></a><span class="lineno"> 98</span> <span class="keyword">static</span> <span class="keyword">constexpr</span> GurobiLinearConstraintIndex kUnspecifiedConstraint = -2;</div>
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<div class="line"><a id="l00099" name="l00099"></a><span class="lineno"> 99</span> <span class="keyword">static</span> <span class="keyword">constexpr</span> <span class="keywordtype">double</span> kInf = std::numeric_limits<double>::infinity();</div>
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<div class="line"><a id="l00100" name="l00100"></a><span class="lineno"> 100</span> <span class="comment">// Data associated with each constraint. With it we know if the underlying</span></div>
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<div class="line"><a id="l00101" name="l00101"></a><span class="lineno"> 101</span> <span class="comment">// representation is either:</span></div>
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<div class="line"><a id="l00102" name="l00102"></a><span class="lineno"> 102</span> <span class="comment">// linear_terms <= upper_bound (if lower bound <= -GRB_INFINITY)</span></div>
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<div class="line"><a id="l00103" name="l00103"></a><span class="lineno"> 103</span> <span class="comment">// linear_terms >= lower_bound (if upper bound >= GRB_INFINTY)</span></div>
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<div class="line"><a id="l00104" name="l00104"></a><span class="lineno"> 104</span> <span class="comment">// linear_terms == xxxxx_bound (if upper_bound == lower_bound)</span></div>
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<div class="line"><a id="l00105" name="l00105"></a><span class="lineno"> 105</span> <span class="comment">// linear_term - slack == 0 (with slack bounds equal to xxxxx_bound)</span></div>
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<div class="line"><a id="l00106" name="l00106"></a><span class="lineno"> 106</span> <span class="keyword">struct </span>ConstraintData {</div>
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<div class="line"><a id="l00107" name="l00107"></a><span class="lineno"> 107</span> GurobiLinearConstraintIndex constraint_index = kUnspecifiedConstraint;</div>
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<div class="line"><a id="l00108" name="l00108"></a><span class="lineno"> 108</span> <span class="comment">// only valid for true ranged constraints.</span></div>
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<div class="line"><a id="l00109" name="l00109"></a><span class="lineno"> 109</span> GurobiVariableIndex slack_index = kUnspecifiedIndex;</div>
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<div class="line"><a id="l00110" name="l00110"></a><span class="lineno"> 110</span> <span class="keywordtype">double</span> <a class="code hl_variable" href="gscip__solver_8cc.html#a1e2f9a2352c1d9a6cada9544898fceec">lower_bound</a> = -<a class="code hl_variable" href="namespaceoperations__research_1_1math__opt.html#ad9f50c9313b35cc1e8887057dc4d9645">kInf</a>;</div>
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<div class="line"><a id="l00111" name="l00111"></a><span class="lineno"> 111</span> <span class="keywordtype">double</span> <a class="code hl_variable" href="gscip__solver_8cc.html#a1ba5ca0f61f2fa13bd23bf0f89004f35">upper_bound</a> = <a class="code hl_variable" href="namespaceoperations__research_1_1math__opt.html#ad9f50c9313b35cc1e8887057dc4d9645">kInf</a>;</div>
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<div class="line"><a id="l00112" name="l00112"></a><span class="lineno"> 112</span> };</div>
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<div class="line"><a id="l00113" name="l00113"></a><span class="lineno"> 113</span> </div>
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<div class="line"><a id="l00114" name="l00114"></a><span class="lineno"> 114</span> <span class="keyword">struct </span>SlackInfo {</div>
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<div class="line"><a id="l00115" name="l00115"></a><span class="lineno"> 115</span> LinearConstraintId id;</div>
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<div class="line"><a id="l00116" name="l00116"></a><span class="lineno"> 116</span> ConstraintData& constraint_data;</div>
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<div class="line"><a id="l00117" name="l00117"></a><span class="lineno"> 117</span> SlackInfo(<span class="keyword">const</span> LinearConstraintId input_id,</div>
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<div class="line"><a id="l00118" name="l00118"></a><span class="lineno"> 118</span> ConstraintData& input_constraint)</div>
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<div class="line"><a id="l00119" name="l00119"></a><span class="lineno"> 119</span> : id(input_id), constraint_data(input_constraint) {}</div>
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<div class="line"><a id="l00120" name="l00120"></a><span class="lineno"> 120</span> };</div>
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<div class="line"><a id="l00121" name="l00121"></a><span class="lineno"> 121</span> </div>
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<div class="line"><a id="l00122" name="l00122"></a><span class="lineno"> 122</span> <span class="keyword">struct </span>SolutionClaims {</div>
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<div class="line"><a id="l00123" name="l00123"></a><span class="lineno"> 123</span> <span class="keywordtype">bool</span> primal_feasible_solution_exists;</div>
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<div class="line"><a id="l00124" name="l00124"></a><span class="lineno"> 124</span> <span class="keywordtype">bool</span> dual_feasible_solution_exists;</div>
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<div class="line"><a id="l00125" name="l00125"></a><span class="lineno"> 125</span> };</div>
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<div class="line"><a id="l00126" name="l00126"></a><span class="lineno"> 126</span> </div>
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<div class="line"><a id="l00127" name="l00127"></a><span class="lineno"> 127</span> <span class="keyword">struct </span>SolutionsAndClaims {</div>
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<div class="line"><a id="l00128" name="l00128"></a><span class="lineno"> 128</span> std::vector<SolutionProto> solutions;</div>
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<div class="line"><a id="l00129" name="l00129"></a><span class="lineno"> 129</span> SolutionClaims solution_claims;</div>
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<div class="line"><a id="l00130" name="l00130"></a><span class="lineno"> 130</span> };</div>
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<div class="line"><a id="l00131" name="l00131"></a><span class="lineno"> 131</span> </div>
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<div class="line"><a id="l00132" name="l00132"></a><span class="lineno"> 132</span> <span class="keyword">template</span> <<span class="keyword">typename</span> SolutionType></div>
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<div class="line"><a id="l00133" name="l00133"></a><span class="lineno"> 133</span> <span class="keyword">struct </span>SolutionAndClaim {</div>
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<div class="line"><a id="l00134" name="l00134"></a><span class="lineno"> 134</span> std::optional<SolutionType> solution;</div>
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<div class="line"><a id="l00135" name="l00135"></a><span class="lineno"> 135</span> <span class="keywordtype">bool</span> feasible_solution_exists = <span class="keyword">false</span>;</div>
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<div class="line"><a id="l00136" name="l00136"></a><span class="lineno"> 136</span> };</div>
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<div class="line"><a id="l00137" name="l00137"></a><span class="lineno"> 137</span> </div>
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<div class="line"><a id="l00138" name="l00138"></a><span class="lineno"> 138</span> <span class="keyword">using</span> <a class="code hl_class" href="classgtl_1_1linked__hash__map.html">IdHashMap</a> = <a class="code hl_class" href="classgtl_1_1linked__hash__map.html">gtl::linked_hash_map<int64_t, int></a>;</div>
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<div class="line"><a id="l00139" name="l00139"></a><span class="lineno"> 139</span> </div>
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<div class="line"><a id="l00140" name="l00140"></a><span class="lineno"> 140</span> absl::StatusOr<ProblemStatusProto> GetProblemStatus(</div>
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<div class="line"><a id="l00141" name="l00141"></a><span class="lineno"> 141</span> <span class="keyword">const</span> <span class="keywordtype">int</span> grb_termination, <span class="keyword">const</span> SolutionClaims solution_claims);</div>
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<div class="line"><a id="l00142" name="l00142"></a><span class="lineno"> 142</span> absl::StatusOr<SolveResultProto> ExtractSolveResultProto(</div>
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<div class="line"><a id="l00143" name="l00143"></a><span class="lineno"> 143</span> absl::Time <a class="code hl_variable" href="sparse__submatrix_8cc.html#a9b7656b922ea4ec96097d7380c0e61fe">start</a>, <span class="keyword">const</span> ModelSolveParametersProto& model_parameters);</div>
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<div class="line"><a id="l00144" name="l00144"></a><span class="lineno"> 144</span> absl::Status FillRays(<span class="keyword">const</span> ModelSolveParametersProto& model_parameters,</div>
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<div class="line"><a id="l00145" name="l00145"></a><span class="lineno"> 145</span> SolveResultProto& result);</div>
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<div class="line"><a id="l00146" name="l00146"></a><span class="lineno"> 146</span> absl::StatusOr<GurobiSolver::SolutionsAndClaims> GetSolutions(</div>
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<div class="line"><a id="l00147" name="l00147"></a><span class="lineno"> 147</span> <span class="keyword">const</span> ModelSolveParametersProto& model_parameters);</div>
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<div class="line"><a id="l00148" name="l00148"></a><span class="lineno"> 148</span> absl::StatusOr<SolveStatsProto> GetSolveStats(absl::Time <a class="code hl_variable" href="sparse__submatrix_8cc.html#a9b7656b922ea4ec96097d7380c0e61fe">start</a>,</div>
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<div class="line"><a id="l00149" name="l00149"></a><span class="lineno"> 149</span> SolutionClaims solution_claims);</div>
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<div class="line"><a id="l00150" name="l00150"></a><span class="lineno"> 150</span> </div>
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<div class="line"><a id="l00151" name="l00151"></a><span class="lineno"> 151</span> absl::StatusOr<double> GetBestDualBound();</div>
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<div class="line"><a id="l00152" name="l00152"></a><span class="lineno"> 152</span> absl::StatusOr<double> GetBestPrimalBound(<span class="keywordtype">bool</span> has_primal_feasible_solution);</div>
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<div class="line"><a id="l00153" name="l00153"></a><span class="lineno"> 153</span> <span class="keywordtype">bool</span> PrimalSolutionQualityAvailable() <span class="keyword">const</span>;</div>
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<div class="line"><a id="l00154" name="l00154"></a><span class="lineno"> 154</span> absl::StatusOr<double> GetPrimalSolutionQuality() <span class="keyword">const</span>;</div>
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<div class="line"><a id="l00155" name="l00155"></a><span class="lineno"> 155</span> </div>
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<div class="line"><a id="l00156" name="l00156"></a><span class="lineno"> 156</span> <span class="comment">// Warning: is read from gurobi, take care with gurobi update.</span></div>
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<div class="line"><a id="l00157" name="l00157"></a><span class="lineno"> 157</span> absl::StatusOr<bool> IsMaximize() <span class="keyword">const</span>;</div>
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<div class="line"><a id="l00158" name="l00158"></a><span class="lineno"> 158</span> </div>
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<div class="line"><a id="l00159" name="l00159"></a><span class="lineno"> 159</span> <span class="keyword">static</span> absl::StatusOr<TerminationProto> ConvertTerminationReason(</div>
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<div class="line"><a id="l00160" name="l00160"></a><span class="lineno"> 160</span> <span class="keywordtype">int</span> gurobi_status, SolutionClaims solution_claims);</div>
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<div class="line"><a id="l00161" name="l00161"></a><span class="lineno"> 161</span> </div>
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<div class="line"><a id="l00162" name="l00162"></a><span class="lineno"> 162</span> absl::StatusOr<SolutionsAndClaims> GetQpSolution(</div>
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<div class="line"><a id="l00163" name="l00163"></a><span class="lineno"> 163</span> <span class="keyword">const</span> ModelSolveParametersProto& model_parameters);</div>
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<div class="line"><a id="l00164" name="l00164"></a><span class="lineno"> 164</span> absl::StatusOr<SolutionsAndClaims> GetLpSolution(</div>
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<div class="line"><a id="l00165" name="l00165"></a><span class="lineno"> 165</span> <span class="keyword">const</span> ModelSolveParametersProto& model_parameters);</div>
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<div class="line"><a id="l00166" name="l00166"></a><span class="lineno"> 166</span> absl::StatusOr<SolutionsAndClaims> GetMipSolutions(</div>
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<div class="line"><a id="l00167" name="l00167"></a><span class="lineno"> 167</span> <span class="keyword">const</span> ModelSolveParametersProto& model_parameters);</div>
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<div class="line"><a id="l00168" name="l00168"></a><span class="lineno"> 168</span> </div>
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<div class="line"><a id="l00169" name="l00169"></a><span class="lineno"> 169</span> <span class="comment">// return bool field should be true if a primal solution exists.</span></div>
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<div class="line"><a id="l00170" name="l00170"></a><span class="lineno"> 170</span> absl::StatusOr<SolutionAndClaim<PrimalSolutionProto>></div>
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<div class="line"><a id="l00171" name="l00171"></a><span class="lineno"> 171</span> GetConvexPrimalSolutionIfAvailable(</div>
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<div class="line"><a id="l00172" name="l00172"></a><span class="lineno"> 172</span> <span class="keyword">const</span> ModelSolveParametersProto& model_parameters);</div>
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<div class="line"><a id="l00173" name="l00173"></a><span class="lineno"> 173</span> absl::StatusOr<SolutionAndClaim<DualSolutionProto>></div>
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<div class="line"><a id="l00174" name="l00174"></a><span class="lineno"> 174</span> GetLpDualSolutionIfAvailable(</div>
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<div class="line"><a id="l00175" name="l00175"></a><span class="lineno"> 175</span> <span class="keyword">const</span> ModelSolveParametersProto& model_parameters);</div>
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<div class="line"><a id="l00176" name="l00176"></a><span class="lineno"> 176</span> absl::StatusOr<std::optional<BasisProto>> GetBasisIfAvailable();</div>
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<div class="line"><a id="l00177" name="l00177"></a><span class="lineno"> 177</span> </div>
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<div class="line"><a id="l00178" name="l00178"></a><span class="lineno"> 178</span> absl::Status SetParameters(<span class="keyword">const</span> SolveParametersProto& <a class="code hl_variable" href="cp__model__fz__solver_8cc.html#a10a1eab179b472c030bdc2a2efef7219">parameters</a>);</div>
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<div class="line"><a id="l00179" name="l00179"></a><span class="lineno"> 179</span> absl::Status AddNewConstraints(<span class="keyword">const</span> LinearConstraintsProto& constraints);</div>
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<div class="line"><a id="l00180" name="l00180"></a><span class="lineno"> 180</span> absl::Status AddNewVariables(<span class="keyword">const</span> VariablesProto& new_variables);</div>
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<div class="line"><a id="l00181" name="l00181"></a><span class="lineno"> 181</span> absl::Status AddNewSlacks(<span class="keyword">const</span> std::vector<SlackInfo>& new_slacks);</div>
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<div class="line"><a id="l00182" name="l00182"></a><span class="lineno"> 182</span> absl::Status ChangeCoefficients(<span class="keyword">const</span> SparseDoubleMatrixProto& matrix);</div>
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<div class="line"><a id="l00183" name="l00183"></a><span class="lineno"> 183</span> <span class="comment">// NOTE: Clears any existing quadratic objective terms.</span></div>
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<div class="line"><a id="l00184" name="l00184"></a><span class="lineno"> 184</span> absl::Status ResetQuadraticObjectiveTerms(</div>
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<div class="line"><a id="l00185" name="l00185"></a><span class="lineno"> 185</span> <span class="keyword">const</span> SparseDoubleMatrixProto& terms);</div>
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<div class="line"><a id="l00186" name="l00186"></a><span class="lineno"> 186</span> <span class="comment">// Updates objective so that it is the sum of everything in terms, plus all</span></div>
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<div class="line"><a id="l00187" name="l00187"></a><span class="lineno"> 187</span> <span class="comment">// other terms prexisting in the objective that are not overwritten by terms.</span></div>
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<div class="line"><a id="l00188" name="l00188"></a><span class="lineno"> 188</span> absl::Status UpdateQuadraticObjectiveTerms(</div>
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<div class="line"><a id="l00189" name="l00189"></a><span class="lineno"> 189</span> <span class="keyword">const</span> SparseDoubleMatrixProto& terms);</div>
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<div class="line"><a id="l00190" name="l00190"></a><span class="lineno"> 190</span> absl::Status LoadModel(<span class="keyword">const</span> ModelProto& input_model);</div>
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<div class="line"><a id="l00191" name="l00191"></a><span class="lineno"> 191</span> </div>
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<div class="line"><a id="l00192" name="l00192"></a><span class="lineno"> 192</span> absl::Status UpdateDoubleListAttribute(<span class="keyword">const</span> SparseDoubleVectorProto& update,</div>
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<div class="line"><a id="l00193" name="l00193"></a><span class="lineno"> 193</span> <span class="keyword">const</span> <span class="keywordtype">char</span>* attribute_name,</div>
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<div class="line"><a id="l00194" name="l00194"></a><span class="lineno"> 194</span> <span class="keyword">const</span> <a class="code hl_class" href="classgtl_1_1linked__hash__map.html">IdHashMap</a>& id_hash_map);</div>
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<div class="line"><a id="l00195" name="l00195"></a><span class="lineno"> 195</span> absl::Status UpdateInt32ListAttribute(<span class="keyword">const</span> SparseInt32VectorProto& update,</div>
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<div class="line"><a id="l00196" name="l00196"></a><span class="lineno"> 196</span> <span class="keyword">const</span> <span class="keywordtype">char</span>* attribute_name,</div>
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<div class="line"><a id="l00197" name="l00197"></a><span class="lineno"> 197</span> <span class="keyword">const</span> <a class="code hl_class" href="classgtl_1_1linked__hash__map.html">IdHashMap</a>& id_hash_map);</div>
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<div class="line"><a id="l00198" name="l00198"></a><span class="lineno"> 198</span> absl::Status UpdateGurobiIndices();</div>
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<div class="line"><a id="l00199" name="l00199"></a><span class="lineno"> 199</span> absl::Status UpdateLinearConstraints(</div>
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<div class="line"><a id="l00200" name="l00200"></a><span class="lineno"> 200</span> <span class="keyword">const</span> LinearConstraintUpdatesProto& update,</div>
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<div class="line"><a id="l00201" name="l00201"></a><span class="lineno"> 201</span> std::vector<GurobiVariableIndex>& deleted_variables_index);</div>
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<div class="line"><a id="l00202" name="l00202"></a><span class="lineno"> 202</span> </div>
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<div class="line"><a id="l00203" name="l00203"></a><span class="lineno"> 203</span> <span class="keywordtype">int</span> num_gurobi_constraints() <span class="keyword">const</span>;</div>
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<div class="line"><a id="l00204" name="l00204"></a><span class="lineno"> 204</span> <span class="keywordtype">int</span> get_model_index(GurobiVariableIndex <a class="code hl_variable" href="local__search_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a>)<span class="keyword"> const </span>{ <span class="keywordflow">return</span> <a class="code hl_variable" href="local__search_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a>; }</div>
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<div class="line"><a id="l00205" name="l00205"></a><span class="lineno"> 205</span> <span class="keywordtype">int</span> get_model_index(<span class="keyword">const</span> ConstraintData& <a class="code hl_variable" href="local__search_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a>)<span class="keyword"> const </span>{</div>
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<div class="line"><a id="l00206" name="l00206"></a><span class="lineno"> 206</span> <span class="keywordflow">return</span> <a class="code hl_variable" href="local__search_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a>.constraint_index;</div>
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<div class="line"><a id="l00207" name="l00207"></a><span class="lineno"> 207</span> }</div>
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<div class="line"><a id="l00208" name="l00208"></a><span class="lineno"> 208</span> </div>
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<div class="line"><a id="l00209" name="l00209"></a><span class="lineno"> 209</span> <span class="comment">// Fills in result with the values in gurobi_values aided by the index</span></div>
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<div class="line"><a id="l00210" name="l00210"></a><span class="lineno"> 210</span> <span class="comment">// conversion from map which should be either variables_map_ or</span></div>
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<div class="line"><a id="l00211" name="l00211"></a><span class="lineno"> 211</span> <span class="comment">// linear_constraints_map_ as appropriate. Only key/value pairs that passes</span></div>
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<div class="line"><a id="l00212" name="l00212"></a><span class="lineno"> 212</span> <span class="comment">// the filter predicate are added.</span></div>
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<div class="line"><a id="l00213" name="l00213"></a><span class="lineno"> 213</span> <span class="keyword">template</span> <<span class="keyword">typename</span> T></div>
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<div class="line"><a id="l00214" name="l00214"></a><span class="lineno"> 214</span> <span class="keywordtype">void</span> GurobiVectorToSparseDoubleVector(</div>
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<div class="line"><a id="l00215" name="l00215"></a><span class="lineno"> 215</span> absl::Span<const double> gurobi_values, <span class="keyword">const</span> T& map,</div>
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<div class="line"><a id="l00216" name="l00216"></a><span class="lineno"> 216</span> SparseDoubleVectorProto& result,</div>
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<div class="line"><a id="l00217" name="l00217"></a><span class="lineno"> 217</span> <span class="keyword">const</span> SparseVectorFilterProto& filter) <span class="keyword">const</span>;</div>
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<div class="line"><a id="l00218" name="l00218"></a><span class="lineno"> 218</span> absl::StatusOr<BasisProto> GetGurobiBasis();</div>
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<div class="line"><a id="l00219" name="l00219"></a><span class="lineno"> 219</span> absl::Status SetGurobiBasis(<span class="keyword">const</span> BasisProto& basis);</div>
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<div class="line"><a id="l00220" name="l00220"></a><span class="lineno"> 220</span> absl::StatusOr<DualRayProto> GetGurobiDualRay(</div>
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<div class="line"><a id="l00221" name="l00221"></a><span class="lineno"> 221</span> <span class="keyword">const</span> SparseVectorFilterProto& linear_constraints_filter,</div>
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<div class="line"><a id="l00222" name="l00222"></a><span class="lineno"> 222</span> <span class="keyword">const</span> SparseVectorFilterProto& variables_filter, <span class="keywordtype">bool</span> is_maximize);</div>
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<div class="line"><a id="l00223" name="l00223"></a><span class="lineno"> 223</span> absl::StatusOr<bool> IsLP() <span class="keyword">const</span>;</div>
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<div class="line"><a id="l00224" name="l00224"></a><span class="lineno"> 224</span> absl::StatusOr<bool> IsQP() <span class="keyword">const</span>;</div>
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<div class="line"><a id="l00225" name="l00225"></a><span class="lineno"> 225</span> </div>
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<div class="line"><a id="l00226" name="l00226"></a><span class="lineno"> 226</span> absl::StatusOr<std::unique_ptr<GurobiCallbackData>> RegisterCallback(</div>
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<div class="line"><a id="l00227" name="l00227"></a><span class="lineno"> 227</span> <span class="keyword">const</span> CallbackRegistrationProto& registration, <a class="code hl_typedef" href="classoperations__research_1_1math__opt_1_1_solver_interface.html#ab47a61ca53ae9cdf35dd4f2dfc9ecadb">Callback</a> cb,</div>
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<div class="line"><a id="l00228" name="l00228"></a><span class="lineno"> 228</span> <span class="keyword">const</span> <a class="code hl_typedef" href="classoperations__research_1_1math__opt_1_1_solver_interface.html#aad3360b1947c772bebf3d3cfb2105a15">MessageCallback</a> message_cb, absl::Time <a class="code hl_variable" href="sparse__submatrix_8cc.html#a9b7656b922ea4ec96097d7380c0e61fe">start</a>,</div>
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<div class="line"><a id="l00229" name="l00229"></a><span class="lineno"> 229</span> <a class="code hl_class" href="classoperations__research_1_1math__opt_1_1_solve_interrupter.html">SolveInterrupter</a>* interrupter);</div>
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<div class="line"><a id="l00230" name="l00230"></a><span class="lineno"> 230</span> </div>
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<div class="line"><a id="l00231" name="l00231"></a><span class="lineno"> 231</span> <span class="comment">// Returns the ids of variables and linear constraints with inverted bounds.</span></div>
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<div class="line"><a id="l00232" name="l00232"></a><span class="lineno"> 232</span> absl::StatusOr<InvertedBounds> ListInvertedBounds() <span class="keyword">const</span>;</div>
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<div class="line"><a id="l00233" name="l00233"></a><span class="lineno"> 233</span> </div>
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<div class="line"><a id="l00234" name="l00234"></a><span class="lineno"> 234</span> <span class="keyword">const</span> std::unique_ptr<Gurobi> gurobi_;</div>
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<div class="line"><a id="l00235" name="l00235"></a><span class="lineno"> 235</span> </div>
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<div class="line"><a id="l00236" name="l00236"></a><span class="lineno"> 236</span> <span class="comment">// Note that we use linked_hash_map because the index of the gurobi_model_</span></div>
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<div class="line"><a id="l00237" name="l00237"></a><span class="lineno"> 237</span> <span class="comment">// variables/constraints is exactly the order in which they are added to the</span></div>
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<div class="line"><a id="l00238" name="l00238"></a><span class="lineno"> 238</span> <span class="comment">// model.</span></div>
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<div class="line"><a id="l00239" name="l00239"></a><span class="lineno"> 239</span> <span class="comment">// Internal correspondence from variable proto IDs to Gurobi-numbered</span></div>
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<div class="line"><a id="l00240" name="l00240"></a><span class="lineno"> 240</span> <span class="comment">// variables.</span></div>
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<div class="line"><a id="l00241" name="l00241"></a><span class="lineno"> 241</span> <a class="code hl_class" href="classgtl_1_1linked__hash__map.html">gtl::linked_hash_map<VariableId, GurobiVariableIndex></a> variables_map_;</div>
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<div class="line"><a id="l00242" name="l00242"></a><span class="lineno"> 242</span> <span class="comment">// Internal correspondence from linear constraint proto IDs to</span></div>
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<div class="line"><a id="l00243" name="l00243"></a><span class="lineno"> 243</span> <span class="comment">// Gurobi-numbered linear constraint and extra information.</span></div>
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<div class="line"><a id="l00244" name="l00244"></a><span class="lineno"> 244</span> <a class="code hl_class" href="classgtl_1_1linked__hash__map.html">gtl::linked_hash_map<LinearConstraintId, ConstraintData></a></div>
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<div class="line"><a id="l00245" name="l00245"></a><span class="lineno"> 245</span> linear_constraints_map_;</div>
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<div class="line"><a id="l00246" name="l00246"></a><span class="lineno"> 246</span> <span class="comment">// For those constraints that need a slack in the gurobi_model_</span></div>
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<div class="line"><a id="l00247" name="l00247"></a><span class="lineno"> 247</span> <span class="comment">// representation (i.e. those with</span></div>
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<div class="line"><a id="l00248" name="l00248"></a><span class="lineno"> 248</span> <span class="comment">// ConstraintData.slack_index != kUnspecifiedIndex), we keep a hash_map of</span></div>
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<div class="line"><a id="l00249" name="l00249"></a><span class="lineno"> 249</span> <span class="comment">// those LinearConstraintId's to a reference of the ConstraintData stored in</span></div>
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<div class="line"><a id="l00250" name="l00250"></a><span class="lineno"> 250</span> <span class="comment">// the linear_constraints_map_. This means that we only have one location</span></div>
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<div class="line"><a id="l00251" name="l00251"></a><span class="lineno"> 251</span> <span class="comment">// were we store information about constraints, but two places from where we</span></div>
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<div class="line"><a id="l00252" name="l00252"></a><span class="lineno"> 252</span> <span class="comment">// can access it.</span></div>
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<div class="line"><a id="l00253" name="l00253"></a><span class="lineno"> 253</span> <span class="comment">// Furthermore, the internal slack_index associated with each</span></div>
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<div class="line"><a id="l00254" name="l00254"></a><span class="lineno"> 254</span> <span class="comment">// actual slack variable is increasing in the order of them in this</span></div>
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<div class="line"><a id="l00255" name="l00255"></a><span class="lineno"> 255</span> <span class="comment">// slack_map_, and is the main reason why we choose to use</span></div>
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<div class="line"><a id="l00256" name="l00256"></a><span class="lineno"> 256</span> <span class="comment">// gtl::linked_hash_map, as the order of insertion (of the remaining</span></div>
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<div class="line"><a id="l00257" name="l00257"></a><span class="lineno"> 257</span> <span class="comment">// elements) is preserved after removals.</span></div>
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<div class="line"><a id="l00258" name="l00258"></a><span class="lineno"> 258</span> <span class="comment">// Note that after deletions, the renumbering of variables must be done</span></div>
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<div class="line"><a id="l00259" name="l00259"></a><span class="lineno"> 259</span> <span class="comment">// simultaneously for variables and slacks following the merged-order of the</span></div>
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<div class="line"><a id="l00260" name="l00260"></a><span class="lineno"> 260</span> <span class="comment">// variable_index and slack_map_.slack_index.</span></div>
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<div class="line"><a id="l00261" name="l00261"></a><span class="lineno"> 261</span> <a class="code hl_class" href="classgtl_1_1linked__hash__map.html">gtl::linked_hash_map<LinearConstraintId, ConstraintData&></a> slack_map_;</div>
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<div class="line"><a id="l00262" name="l00262"></a><span class="lineno"> 262</span> <span class="comment">// Number of Gurobi variables, this internal quantity is updated when we</span></div>
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<div class="line"><a id="l00263" name="l00263"></a><span class="lineno"> 263</span> <span class="comment">// actually add or remove variables or constraints in the underlying Gurobi</span></div>
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<div class="line"><a id="l00264" name="l00264"></a><span class="lineno"> 264</span> <span class="comment">// model. Furthermore, since 'ModelUpdate' can trigger both creation and</span></div>
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<div class="line"><a id="l00265" name="l00265"></a><span class="lineno"> 265</span> <span class="comment">// deletion of variables and constraints, we batch those changes in two</span></div>
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<div class="line"><a id="l00266" name="l00266"></a><span class="lineno"> 266</span> <span class="comment">// steps: first add all new variables and constraints, and then delete all</span></div>
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<div class="line"><a id="l00267" name="l00267"></a><span class="lineno"> 267</span> <span class="comment">// variables and constraints that need deletion. Finally flush changes at</span></div>
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<div class="line"><a id="l00268" name="l00268"></a><span class="lineno"> 268</span> <span class="comment">// the gurobi model level (if any deletion was performed).</span></div>
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<div class="line"><a id="l00269" name="l00269"></a><span class="lineno"> 269</span> <span class="keywordtype">int</span> num_gurobi_variables_ = 0;</div>
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<div class="line"><a id="l00270" name="l00270"></a><span class="lineno"> 270</span> <span class="comment">// Gurobi does not expose a way to query quadratic objective terms from the</span></div>
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<div class="line"><a id="l00271" name="l00271"></a><span class="lineno"> 271</span> <span class="comment">// model, so we track them. Notes:</span></div>
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<div class="line"><a id="l00272" name="l00272"></a><span class="lineno"> 272</span> <span class="comment">// * Keys are in upper triangular order (.first <= .second)</span></div>
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<div class="line"><a id="l00273" name="l00273"></a><span class="lineno"> 273</span> <span class="comment">// * Terms not in the map have zero coefficients</span></div>
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<div class="line"><a id="l00274" name="l00274"></a><span class="lineno"> 274</span> <span class="comment">// Note also that the map may also have entries with zero coefficient value.</span></div>
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<div class="line"><a id="l00275" name="l00275"></a><span class="lineno"> 275</span> absl::flat_hash_map<std::pair<VariableId, VariableId>, <span class="keywordtype">double</span>></div>
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<div class="line"><a id="l00276" name="l00276"></a><span class="lineno"> 276</span> quadratic_objective_coefficients_;</div>
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<div class="line"><a id="l00277" name="l00277"></a><span class="lineno"> 277</span> </div>
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<div class="line"><a id="l00278" name="l00278"></a><span class="lineno"> 278</span> <span class="keyword">static</span> <span class="keyword">constexpr</span> <span class="keywordtype">int</span> kGrbBasicConstraint = 0;</div>
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<div class="line"><a id="l00279" name="l00279"></a><span class="lineno"> 279</span> <span class="keyword">static</span> <span class="keyword">constexpr</span> <span class="keywordtype">int</span> kGrbNonBasicConstraint = -1;</div>
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<div class="line"><a id="l00280" name="l00280"></a><span class="lineno"> 280</span>};</div>
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<div class="line"><a id="l00281" name="l00281"></a><span class="lineno"> 281</span> </div>
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<div class="line"><a id="l00282" name="l00282"></a><span class="lineno"> 282</span>} <span class="comment">// namespace math_opt</span></div>
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<div class="line"><a id="l00283" name="l00283"></a><span class="lineno"> 283</span>} <span class="comment">// namespace operations_research</span></div>
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<div class="line"><a id="l00284" name="l00284"></a><span class="lineno"> 284</span> </div>
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<div class="line"><a id="l00285" name="l00285"></a><span class="lineno"> 285</span><span class="preprocessor">#endif </span><span class="comment">// OR_TOOLS_MATH_OPT_SOLVERS_GUROBI_SOLVER_H_</span></div>
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<div class="ttc" id="abase_2logging_8h_html"><div class="ttname"><a href="base_2logging_8h.html">logging.h</a></div></div>
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<div class="ttc" id="aclassgtl_1_1linked__hash__map_html"><div class="ttname"><a href="classgtl_1_1linked__hash__map.html">gtl::linked_hash_map< int64_t, int ></a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1math__opt_1_1_gurobi_solver_html"><div class="ttname"><a href="classoperations__research_1_1math__opt_1_1_gurobi_solver.html">operations_research::math_opt::GurobiSolver</a></div><div class="ttdef"><b>Definition:</b> <a href="gurobi__solver_8h_source.html#l00051">gurobi_solver.h:51</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1math__opt_1_1_gurobi_solver_html_a1dcbb1374e91747a2db097361b091c8b"><div class="ttname"><a href="classoperations__research_1_1math__opt_1_1_gurobi_solver.html#a1dcbb1374e91747a2db097361b091c8b">operations_research::math_opt::GurobiSolver::CanUpdate</a></div><div class="ttdeci">bool CanUpdate(const ModelUpdateProto &model_update) override</div><div class="ttdef"><b>Definition:</b> <a href="gurobi__solver_8cc_source.html#l02001">gurobi_solver.cc:2001</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1math__opt_1_1_gurobi_solver_html_a4dc835d3171da48778de1bbea39f8448"><div class="ttname"><a href="classoperations__research_1_1math__opt_1_1_gurobi_solver.html#a4dc835d3171da48778de1bbea39f8448">operations_research::math_opt::GurobiSolver::Update</a></div><div class="ttdeci">absl::Status Update(const ModelUpdateProto &model_update) override</div><div class="ttdef"><b>Definition:</b> <a href="gurobi__solver_8cc_source.html#l01689">gurobi_solver.cc:1689</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1math__opt_1_1_gurobi_solver_html_a73909f7e8ae986fafa92070c5298634e"><div class="ttname"><a href="classoperations__research_1_1math__opt_1_1_gurobi_solver.html#a73909f7e8ae986fafa92070c5298634e">operations_research::math_opt::GurobiSolver::New</a></div><div class="ttdeci">static absl::StatusOr< std::unique_ptr< GurobiSolver > > New(const ModelProto &input_model, const SolverInterface::InitArgs &init_args)</div><div class="ttdef"><b>Definition:</b> <a href="gurobi__solver_8cc_source.html#l01811">gurobi_solver.cc:1811</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1math__opt_1_1_gurobi_solver_html_a7875bc8ab28e1cf6cefc688d7b70ac7e"><div class="ttname"><a href="classoperations__research_1_1math__opt_1_1_gurobi_solver.html#a7875bc8ab28e1cf6cefc688d7b70ac7e">operations_research::math_opt::GurobiSolver::Solve</a></div><div class="ttdeci">absl::StatusOr< SolveResultProto > Solve(const SolveParametersProto &parameters, const ModelSolveParametersProto &model_parameters, MessageCallback message_cb, const CallbackRegistrationProto &callback_registration, Callback cb, SolveInterrupter *interrupter) override</div><div class="ttdef"><b>Definition:</b> <a href="gurobi__solver_8cc_source.html#l01900">gurobi_solver.cc:1900</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1math__opt_1_1_message_callback_data_html"><div class="ttname"><a href="classoperations__research_1_1math__opt_1_1_message_callback_data.html">operations_research::math_opt::MessageCallbackData</a></div><div class="ttdef"><b>Definition:</b> <a href="message__callback__data_8h_source.html#l00039">message_callback_data.h:39</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1math__opt_1_1_solve_interrupter_html"><div class="ttname"><a href="classoperations__research_1_1math__opt_1_1_solve_interrupter.html">operations_research::math_opt::SolveInterrupter</a></div><div class="ttdef"><b>Definition:</b> <a href="solve__interrupter_8h_source.html#l00039">solve_interrupter.h:39</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1math__opt_1_1_solver_interface_html"><div class="ttname"><a href="classoperations__research_1_1math__opt_1_1_solver_interface.html">operations_research::math_opt::SolverInterface</a></div><div class="ttdef"><b>Definition:</b> <a href="solver__interface_8h_source.html#l00059">solver_interface.h:59</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1math__opt_1_1_solver_interface_html_aad3360b1947c772bebf3d3cfb2105a15"><div class="ttname"><a href="classoperations__research_1_1math__opt_1_1_solver_interface.html#aad3360b1947c772bebf3d3cfb2105a15">operations_research::math_opt::SolverInterface::MessageCallback</a></div><div class="ttdeci">std::function< void(const std::vector< std::string > &)> MessageCallback</div><div class="ttdef"><b>Definition:</b> <a href="solver__interface_8h_source.html#l00075">solver_interface.h:75</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1math__opt_1_1_solver_interface_html_ab47a61ca53ae9cdf35dd4f2dfc9ecadb"><div class="ttname"><a href="classoperations__research_1_1math__opt_1_1_solver_interface.html#ab47a61ca53ae9cdf35dd4f2dfc9ecadb">operations_research::math_opt::SolverInterface::Callback</a></div><div class="ttdeci">std::function< absl::StatusOr< CallbackResultProto >(const CallbackDataProto &)> Callback</div><div class="ttdef"><b>Definition:</b> <a href="solver__interface_8h_source.html#l00083">solver_interface.h:84</a></div></div>
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<div class="ttc" id="acp__model__fz__solver_8cc_html_a10a1eab179b472c030bdc2a2efef7219"><div class="ttname"><a href="cp__model__fz__solver_8cc.html#a10a1eab179b472c030bdc2a2efef7219">parameters</a></div><div class="ttdeci">SatParameters parameters</div><div class="ttdef"><b>Definition:</b> <a href="cp__model__fz__solver_8cc_source.html#l00119">cp_model_fz_solver.cc:119</a></div></div>
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<div class="ttc" id="aenvironment_8h_html"><div class="ttname"><a href="environment_8h.html">environment.h</a></div></div>
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<div class="ttc" id="ag__gurobi_8cc_html_a2237393c7ae7ad7344c9885066d5ab6d"><div class="ttname"><a href="g__gurobi_8cc.html#a2237393c7ae7ad7344c9885066d5ab6d">status</a></div><div class="ttdeci">absl::Status status</div><div class="ttdef"><b>Definition:</b> <a href="g__gurobi_8cc_source.html#l00035">g_gurobi.cc:35</a></div></div>
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<div class="ttc" id="ag__gurobi_8h_html"><div class="ttname"><a href="g__gurobi_8h.html">g_gurobi.h</a></div></div>
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<div class="ttc" id="agscip__solver_8cc_html_a1ba5ca0f61f2fa13bd23bf0f89004f35"><div class="ttname"><a href="gscip__solver_8cc.html#a1ba5ca0f61f2fa13bd23bf0f89004f35">upper_bound</a></div><div class="ttdeci">double upper_bound</div><div class="ttdef"><b>Definition:</b> <a href="gscip__solver_8cc_source.html#l00137">gscip_solver.cc:137</a></div></div>
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<div class="ttc" id="agscip__solver_8cc_html_a1e2f9a2352c1d9a6cada9544898fceec"><div class="ttname"><a href="gscip__solver_8cc.html#a1e2f9a2352c1d9a6cada9544898fceec">lower_bound</a></div><div class="ttdeci">double lower_bound</div><div class="ttdef"><b>Definition:</b> <a href="gscip__solver_8cc_source.html#l00136">gscip_solver.cc:136</a></div></div>
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<div class="ttc" id="agurobi__callback_8h_html"><div class="ttname"><a href="gurobi__callback_8h.html">gurobi_callback.h</a></div></div>
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<div class="ttc" id="ainverted__bounds_8h_html"><div class="ttname"><a href="inverted__bounds_8h.html">inverted_bounds.h</a></div></div>
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<div class="ttc" id="alinked__hash__map_8h_html"><div class="ttname"><a href="linked__hash__map_8h.html">linked_hash_map.h</a></div></div>
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<div class="ttc" id="alocal__search_8cc_html_a750b5d744c39a06bfb13e6eb010e35d0"><div class="ttname"><a href="local__search_8cc.html#a750b5d744c39a06bfb13e6eb010e35d0">index</a></div><div class="ttdeci">int index</div><div class="ttdef"><b>Definition:</b> <a href="local__search_8cc_source.html#l02750">local_search.cc:2750</a></div></div>
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<div class="ttc" id="amessage__callback__data_8h_html"><div class="ttname"><a href="message__callback__data_8h.html">message_callback_data.h</a></div></div>
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<div class="ttc" id="anamespaceoperations__research_1_1math__opt_html"><div class="ttname"><a href="namespaceoperations__research_1_1math__opt.html">operations_research::math_opt</a></div><div class="ttdef"><b>Definition:</b> <a href="arrow__operator__proxy_8h_source.html#l00020">arrow_operator_proxy.h:20</a></div></div>
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<div class="ttc" id="anamespaceoperations__research_1_1math__opt_html_ad9f50c9313b35cc1e8887057dc4d9645"><div class="ttname"><a href="namespaceoperations__research_1_1math__opt.html#ad9f50c9313b35cc1e8887057dc4d9645">operations_research::math_opt::kInf</a></div><div class="ttdeci">constexpr double kInf</div><div class="ttdef"><b>Definition:</b> <a href="variable__and__expressions_8cc_source.html#l00029">variable_and_expressions.cc:29</a></div></div>
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