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279 lines
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<div class="headertitle"><div class="title">entering_variable.h</div></div>
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<a href="entering__variable_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_GLOP_ENTERING_VARIABLE_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_GLOP_ENTERING_VARIABLE_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> </div>
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<div class="line"><a id="l00019" name="l00019"></a><span class="lineno"> 19</span><span class="preprocessor">#include "absl/random/bit_gen_ref.h"</span></div>
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<div class="line"><a id="l00020" name="l00020"></a><span class="lineno"> 20</span><span class="preprocessor">#include "<a class="code" href="basis__representation_8h.html">ortools/glop/basis_representation.h</a>"</span></div>
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<div class="line"><a id="l00021" name="l00021"></a><span class="lineno"> 21</span><span class="preprocessor">#include "<a class="code" href="parameters_8pb_8h.html">ortools/glop/parameters.pb.h</a>"</span></div>
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<div class="line"><a id="l00022" name="l00022"></a><span class="lineno"> 22</span><span class="preprocessor">#include "<a class="code" href="primal__edge__norms_8h.html">ortools/glop/primal_edge_norms.h</a>"</span></div>
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<div class="line"><a id="l00023" name="l00023"></a><span class="lineno"> 23</span><span class="preprocessor">#include "<a class="code" href="reduced__costs_8h.html">ortools/glop/reduced_costs.h</a>"</span></div>
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<div class="line"><a id="l00024" name="l00024"></a><span class="lineno"> 24</span><span class="preprocessor">#include "<a class="code" href="status_8h.html">ortools/glop/status.h</a>"</span></div>
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<div class="line"><a id="l00025" name="l00025"></a><span class="lineno"> 25</span><span class="preprocessor">#include "<a class="code" href="update__row_8h.html">ortools/glop/update_row.h</a>"</span></div>
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<div class="line"><a id="l00026" name="l00026"></a><span class="lineno"> 26</span><span class="preprocessor">#include "<a class="code" href="variables__info_8h.html">ortools/glop/variables_info.h</a>"</span></div>
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<div class="line"><a id="l00027" name="l00027"></a><span class="lineno"> 27</span><span class="preprocessor">#include "<a class="code" href="lp__data_8h.html">ortools/lp_data/lp_data.h</a>"</span></div>
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<div class="line"><a id="l00028" name="l00028"></a><span class="lineno"> 28</span><span class="preprocessor">#include "<a class="code" href="lp__types_8h.html">ortools/lp_data/lp_types.h</a>"</span></div>
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<div class="line"><a id="l00029" name="l00029"></a><span class="lineno"> 29</span><span class="preprocessor">#include "<a class="code" href="bitset_8h.html">ortools/util/bitset.h</a>"</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="stats_8h.html">ortools/util/stats.h</a>"</span></div>
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<div class="line"><a id="l00031" name="l00031"></a><span class="lineno"> 31</span> </div>
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<div class="line"><a id="l00032" name="l00032"></a><span class="lineno"> 32</span><span class="preprocessor">#if !SWIG</span></div>
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<div class="line"><a id="l00033" name="l00033"></a><span class="lineno"> 33</span> </div>
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<div class="line"><a id="l00034" name="l00034"></a><span class="lineno"> 34</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="l00035" name="l00035"></a><span class="lineno"> 35</span><span class="keyword">namespace </span>glop {</div>
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<div class="line"><a id="l00036" name="l00036"></a><span class="lineno"> 36</span> </div>
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<div class="line"><a id="l00037" name="l00037"></a><span class="lineno"> 37</span><span class="comment">// This class contains the dual algorithms that choose the entering column (i.e.</span></div>
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<div class="line"><a id="l00038" name="l00038"></a><span class="lineno"> 38</span><span class="comment">// variable) during a dual simplex iteration. That is the dual ratio test.</span></div>
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<div class="line"><a id="l00039" name="l00039"></a><span class="lineno"> 39</span><span class="comment">//</span></div>
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<div class="line"><a id="l00040" name="l00040"></a><span class="lineno"> 40</span><span class="comment">// Terminology:</span></div>
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<div class="line"><a id="l00041" name="l00041"></a><span class="lineno"> 41</span><span class="comment">// - The entering edge is the edge we are following during a simplex step,</span></div>
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<div class="line"><a id="l00042" name="l00042"></a><span class="lineno"> 42</span><span class="comment">// and we call "direction" the reverse of this edge restricted to the</span></div>
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<div class="line"><a id="l00043" name="l00043"></a><span class="lineno"> 43</span><span class="comment">// basic variables, i.e. the right inverse of the entering column.</span></div>
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<div class="line"><a id="l00044" name="l00044"></a><span class="lineno"><a class="line" href="classoperations__research_1_1glop_1_1_entering_variable.html"> 44</a></span><span class="keyword">class </span><a class="code hl_class" href="classoperations__research_1_1glop_1_1_entering_variable.html">EnteringVariable</a> {</div>
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<div class="line"><a id="l00045" name="l00045"></a><span class="lineno"> 45</span> <span class="keyword">public</span>:</div>
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<div class="line"><a id="l00046" name="l00046"></a><span class="lineno"> 46</span> <span class="comment">// Takes references to the linear program data we need.</span></div>
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<div class="line"><a id="l00047" name="l00047"></a><span class="lineno"> 47</span> <a class="code hl_function" href="classoperations__research_1_1glop_1_1_entering_variable.html#a2dbed549d25654617b466ea86d51fa51">EnteringVariable</a>(<span class="keyword">const</span> <a class="code hl_class" href="classoperations__research_1_1glop_1_1_variables_info.html">VariablesInfo</a>& variables_info, absl::BitGenRef random,</div>
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<div class="line"><a id="l00048" name="l00048"></a><span class="lineno"> 48</span> <a class="code hl_class" href="classoperations__research_1_1glop_1_1_reduced_costs.html">ReducedCosts</a>* reduced_costs);</div>
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<div class="line"><a id="l00049" name="l00049"></a><span class="lineno"> 49</span> </div>
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<div class="line"><a id="l00050" name="l00050"></a><span class="lineno"> 50</span> <span class="comment">// Dual optimization phase (i.e. phase II) ratio test.</span></div>
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<div class="line"><a id="l00051" name="l00051"></a><span class="lineno"> 51</span> <span class="comment">// Returns the index of the entering column given that we want to move along</span></div>
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<div class="line"><a id="l00052" name="l00052"></a><span class="lineno"> 52</span> <span class="comment">// the "update" row vector in the direction given by the sign of</span></div>
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<div class="line"><a id="l00053" name="l00053"></a><span class="lineno"> 53</span> <span class="comment">// cost_variation. Computes the smallest step that keeps the dual feasibility</span></div>
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<div class="line"><a id="l00054" name="l00054"></a><span class="lineno"> 54</span> <span class="comment">// for all the columns.</span></div>
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<div class="line"><a id="l00055" name="l00055"></a><span class="lineno"> 55</span> ABSL_MUST_USE_RESULT <a class="code hl_class" href="classoperations__research_1_1glop_1_1_status.html">Status</a> <a class="code hl_function" href="classoperations__research_1_1glop_1_1_entering_variable.html#afaf135d40c257d0f1a49aa8e795c9b03">DualChooseEnteringColumn</a>(</div>
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<div class="line"><a id="l00056" name="l00056"></a><span class="lineno"> 56</span> <span class="keywordtype">bool</span> nothing_to_recompute, <span class="keyword">const</span> <a class="code hl_class" href="classoperations__research_1_1glop_1_1_update_row.html">UpdateRow</a>& update_row,</div>
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<div class="line"><a id="l00057" name="l00057"></a><span class="lineno"> 57</span> <a class="code hl_typedef" href="namespaceoperations__research_1_1glop.html#a733947145e3e1631165b618b05c9ccb7">Fractional</a> cost_variation, std::vector<ColIndex>* bound_flip_candidates,</div>
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<div class="line"><a id="l00058" name="l00058"></a><span class="lineno"> 58</span> ColIndex* entering_col);</div>
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<div class="line"><a id="l00059" name="l00059"></a><span class="lineno"> 59</span> </div>
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<div class="line"><a id="l00060" name="l00060"></a><span class="lineno"> 60</span> <span class="comment">// Dual feasibility phase (i.e. phase I) ratio test.</span></div>
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<div class="line"><a id="l00061" name="l00061"></a><span class="lineno"> 61</span> <span class="comment">// Similar to the optimization phase test, but allows a step that increases</span></div>
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<div class="line"><a id="l00062" name="l00062"></a><span class="lineno"> 62</span> <span class="comment">// the infeasibility of an already infeasible column. The step magnitude is</span></div>
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<div class="line"><a id="l00063" name="l00063"></a><span class="lineno"> 63</span> <span class="comment">// the one that minimize the sum of infeasibilities when applied.</span></div>
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<div class="line"><a id="l00064" name="l00064"></a><span class="lineno"> 64</span> ABSL_MUST_USE_RESULT <a class="code hl_class" href="classoperations__research_1_1glop_1_1_status.html">Status</a> <a class="code hl_function" href="classoperations__research_1_1glop_1_1_entering_variable.html#aa271bff260917fd62d0d7509b7118ad6">DualPhaseIChooseEnteringColumn</a>(</div>
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<div class="line"><a id="l00065" name="l00065"></a><span class="lineno"> 65</span> <span class="keywordtype">bool</span> nothing_to_recompute, <span class="keyword">const</span> <a class="code hl_class" href="classoperations__research_1_1glop_1_1_update_row.html">UpdateRow</a>& update_row,</div>
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<div class="line"><a id="l00066" name="l00066"></a><span class="lineno"> 66</span> <a class="code hl_typedef" href="namespaceoperations__research_1_1glop.html#a733947145e3e1631165b618b05c9ccb7">Fractional</a> cost_variation, ColIndex* entering_col);</div>
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<div class="line"><a id="l00067" name="l00067"></a><span class="lineno"> 67</span> </div>
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<div class="line"><a id="l00068" name="l00068"></a><span class="lineno"> 68</span> <span class="comment">// Sets the parameters.</span></div>
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<div class="line"><a id="l00069" name="l00069"></a><span class="lineno"> 69</span> <span class="keywordtype">void</span> <a class="code hl_function" href="classoperations__research_1_1glop_1_1_entering_variable.html#ae7202d055b6b172a8a1da4f5b136f9ea">SetParameters</a>(<span class="keyword">const</span> <a class="code hl_class" href="classoperations__research_1_1glop_1_1_glop_parameters.html">GlopParameters</a>& <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="l00070" name="l00070"></a><span class="lineno"> 70</span> </div>
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<div class="line"><a id="l00071" name="l00071"></a><span class="lineno"> 71</span> <span class="comment">// Stats related functions.</span></div>
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<div class="line"><a id="l00072" name="l00072"></a><span class="lineno"><a class="line" href="classoperations__research_1_1glop_1_1_entering_variable.html#af9bc435481ae9e6e60d66a65d5394a7f"> 72</a></span> std::string <a class="code hl_function" href="classoperations__research_1_1glop_1_1_entering_variable.html#af9bc435481ae9e6e60d66a65d5394a7f">StatString</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> stats_.StatString(); }</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">// Deterministic time used by some of the functions of this class.</span></div>
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<div class="line"><a id="l00075" name="l00075"></a><span class="lineno"> 75</span> <span class="comment">//</span></div>
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<div class="line"><a id="l00076" name="l00076"></a><span class="lineno"> 76</span> <span class="comment">// TODO(user): Be exhausitive and more precise.</span></div>
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<div class="line"><a id="l00077" name="l00077"></a><span class="lineno"><a class="line" href="classoperations__research_1_1glop_1_1_entering_variable.html#aeccc8138b268e621d96d105e0ddd474a"> 77</a></span> <span class="keywordtype">double</span> <a class="code hl_function" href="classoperations__research_1_1glop_1_1_entering_variable.html#aeccc8138b268e621d96d105e0ddd474a">DeterministicTime</a>()<span class="keyword"> const </span>{</div>
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<div class="line"><a id="l00078" name="l00078"></a><span class="lineno"> 78</span> <span class="keywordflow">return</span> <a class="code hl_function" href="namespaceoperations__research_1_1glop.html#aedb714d776d86539dbb9f42ae5d7d923">DeterministicTimeForFpOperations</a>(num_operations_);</div>
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<div class="line"><a id="l00079" name="l00079"></a><span class="lineno"> 79</span> }</div>
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<div class="line"><a id="l00080" name="l00080"></a><span class="lineno"> 80</span> </div>
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<div class="line"><a id="l00081" name="l00081"></a><span class="lineno"> 81</span> <span class="keyword">private</span>:</div>
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<div class="line"><a id="l00082" name="l00082"></a><span class="lineno"> 82</span> <span class="comment">// Problem data that should be updated from outside.</span></div>
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<div class="line"><a id="l00083" name="l00083"></a><span class="lineno"> 83</span> <span class="keyword">const</span> <a class="code hl_class" href="classoperations__research_1_1glop_1_1_variables_info.html">VariablesInfo</a>& variables_info_;</div>
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<div class="line"><a id="l00084" name="l00084"></a><span class="lineno"> 84</span> </div>
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<div class="line"><a id="l00085" name="l00085"></a><span class="lineno"> 85</span> absl::BitGenRef random_;</div>
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<div class="line"><a id="l00086" name="l00086"></a><span class="lineno"> 86</span> <a class="code hl_class" href="classoperations__research_1_1glop_1_1_reduced_costs.html">ReducedCosts</a>* reduced_costs_;</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> <span class="comment">// Internal data.</span></div>
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<div class="line"><a id="l00089" name="l00089"></a><span class="lineno"> 89</span> <a class="code hl_class" href="classoperations__research_1_1glop_1_1_glop_parameters.html">GlopParameters</a> parameters_;</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">// Stats.</span></div>
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<div class="line"><a id="l00092" name="l00092"></a><span class="lineno"> 92</span> <span class="keyword">struct </span>Stats : <span class="keyword">public</span> <a class="code hl_class" href="classoperations__research_1_1_stats_group.html">StatsGroup</a> {</div>
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<div class="line"><a id="l00093" name="l00093"></a><span class="lineno"> 93</span> Stats()</div>
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<div class="line"><a id="l00094" name="l00094"></a><span class="lineno"> 94</span> : <a class="code hl_class" href="classoperations__research_1_1_stats_group.html">StatsGroup</a>(<span class="stringliteral">"EnteringVariable"</span>),</div>
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<div class="line"><a id="l00095" name="l00095"></a><span class="lineno"> 95</span> num_perfect_ties(<span class="stringliteral">"num_perfect_ties"</span>, this) {}</div>
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<div class="line"><a id="l00096" name="l00096"></a><span class="lineno"> 96</span> <a class="code hl_class" href="classoperations__research_1_1_integer_distribution.html">IntegerDistribution</a> num_perfect_ties;</div>
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<div class="line"><a id="l00097" name="l00097"></a><span class="lineno"> 97</span> };</div>
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<div class="line"><a id="l00098" name="l00098"></a><span class="lineno"> 98</span> Stats stats_;</div>
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<div class="line"><a id="l00099" name="l00099"></a><span class="lineno"> 99</span> </div>
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<div class="line"><a id="l00100" name="l00100"></a><span class="lineno"> 100</span> <span class="comment">// Temporary vector used to hold the best entering column candidates that are</span></div>
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<div class="line"><a id="l00101" name="l00101"></a><span class="lineno"> 101</span> <span class="comment">// tied using the current choosing criteria. We actually only store the tied</span></div>
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<div class="line"><a id="l00102" name="l00102"></a><span class="lineno"> 102</span> <span class="comment">// candidate #2, #3, ...; because the first tied candidate is remembered</span></div>
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<div class="line"><a id="l00103" name="l00103"></a><span class="lineno"> 103</span> <span class="comment">// anyway.</span></div>
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<div class="line"><a id="l00104" name="l00104"></a><span class="lineno"> 104</span> std::vector<ColIndex> equivalent_entering_choices_;</div>
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<div class="line"><a id="l00105" name="l00105"></a><span class="lineno"> 105</span> </div>
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<div class="line"><a id="l00106" name="l00106"></a><span class="lineno"> 106</span> <span class="comment">// Store a column with its update coefficient and ratio.</span></div>
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<div class="line"><a id="l00107" name="l00107"></a><span class="lineno"> 107</span> <span class="comment">// This is used during the dual phase I & II ratio tests.</span></div>
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<div class="line"><a id="l00108" name="l00108"></a><span class="lineno"> 108</span> <span class="keyword">struct </span>ColWithRatio {</div>
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<div class="line"><a id="l00109" name="l00109"></a><span class="lineno"> 109</span> ColWithRatio(ColIndex _col, <a class="code hl_typedef" href="namespaceoperations__research_1_1glop.html#a733947145e3e1631165b618b05c9ccb7">Fractional</a> reduced_cost, <a class="code hl_typedef" href="namespaceoperations__research_1_1glop.html#a733947145e3e1631165b618b05c9ccb7">Fractional</a> coeff_m)</div>
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<div class="line"><a id="l00110" name="l00110"></a><span class="lineno"> 110</span> : <a class="code hl_variable" href="markowitz_8cc.html#aa9d6c98fdf8d89b0e2321fda02adc82c">col</a>(_col), <a class="code hl_variable" href="revised__simplex_8cc.html#af01c50e388647c921aa7d9c77f2b72b2">ratio</a>(reduced_cost / coeff_m), <a class="code hl_variable" href="revised__simplex_8cc.html#a773239be94b6b64ba8fa2367b86776be">coeff_magnitude</a>(coeff_m) {}</div>
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<div class="line"><a id="l00111" name="l00111"></a><span class="lineno"> 111</span> </div>
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<div class="line"><a id="l00112" name="l00112"></a><span class="lineno"> 112</span> <span class="comment">// Returns false if "this" is before "other" in a priority queue.</span></div>
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<div class="line"><a id="l00113" name="l00113"></a><span class="lineno"> 113</span> <span class="keywordtype">bool</span> operator<(<span class="keyword">const</span> ColWithRatio& other)<span class="keyword"> const </span>{</div>
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<div class="line"><a id="l00114" name="l00114"></a><span class="lineno"> 114</span> <span class="keywordflow">if</span> (<a class="code hl_variable" href="revised__simplex_8cc.html#af01c50e388647c921aa7d9c77f2b72b2">ratio</a> == other.ratio) {</div>
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<div class="line"><a id="l00115" name="l00115"></a><span class="lineno"> 115</span> <span class="keywordflow">if</span> (<a class="code hl_variable" href="revised__simplex_8cc.html#a773239be94b6b64ba8fa2367b86776be">coeff_magnitude</a> == other.coeff_magnitude) {</div>
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<div class="line"><a id="l00116" name="l00116"></a><span class="lineno"> 116</span> <span class="keywordflow">return</span> <a class="code hl_variable" href="markowitz_8cc.html#aa9d6c98fdf8d89b0e2321fda02adc82c">col</a> > other.col;</div>
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<div class="line"><a id="l00117" name="l00117"></a><span class="lineno"> 117</span> }</div>
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<div class="line"><a id="l00118" name="l00118"></a><span class="lineno"> 118</span> <span class="keywordflow">return</span> <a class="code hl_variable" href="revised__simplex_8cc.html#a773239be94b6b64ba8fa2367b86776be">coeff_magnitude</a> < other.coeff_magnitude;</div>
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<div class="line"><a id="l00119" name="l00119"></a><span class="lineno"> 119</span> }</div>
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<div class="line"><a id="l00120" name="l00120"></a><span class="lineno"> 120</span> <span class="keywordflow">return</span> <a class="code hl_variable" href="revised__simplex_8cc.html#af01c50e388647c921aa7d9c77f2b72b2">ratio</a> > other.ratio;</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> </div>
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<div class="line"><a id="l00123" name="l00123"></a><span class="lineno"> 123</span> ColIndex <a class="code hl_variable" href="markowitz_8cc.html#aa9d6c98fdf8d89b0e2321fda02adc82c">col</a>;</div>
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<div class="line"><a id="l00124" name="l00124"></a><span class="lineno"> 124</span> <a class="code hl_typedef" href="namespaceoperations__research_1_1glop.html#a733947145e3e1631165b618b05c9ccb7">Fractional</a> <a class="code hl_variable" href="revised__simplex_8cc.html#af01c50e388647c921aa7d9c77f2b72b2">ratio</a>;</div>
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<div class="line"><a id="l00125" name="l00125"></a><span class="lineno"> 125</span> <a class="code hl_typedef" href="namespaceoperations__research_1_1glop.html#a733947145e3e1631165b618b05c9ccb7">Fractional</a> <a class="code hl_variable" href="revised__simplex_8cc.html#a773239be94b6b64ba8fa2367b86776be">coeff_magnitude</a>;</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> </div>
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<div class="line"><a id="l00128" name="l00128"></a><span class="lineno"> 128</span> <span class="comment">// Temporary vector used to hold breakpoints.</span></div>
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<div class="line"><a id="l00129" name="l00129"></a><span class="lineno"> 129</span> std::vector<ColWithRatio> breakpoints_;</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> <span class="comment">// Counter for the deterministic time.</span></div>
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<div class="line"><a id="l00132" name="l00132"></a><span class="lineno"> 132</span> int64_t num_operations_ = 0;</div>
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<div class="line"><a id="l00133" name="l00133"></a><span class="lineno"> 133</span> </div>
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<div class="line"><a id="l00134" name="l00134"></a><span class="lineno"> 134</span> DISALLOW_COPY_AND_ASSIGN(<a class="code hl_function" href="classoperations__research_1_1glop_1_1_entering_variable.html#a2dbed549d25654617b466ea86d51fa51">EnteringVariable</a>);</div>
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<div class="line"><a id="l00135" name="l00135"></a><span class="lineno"> 135</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>} <span class="comment">// namespace glop</span></div>
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<div class="line"><a id="l00138" name="l00138"></a><span class="lineno"> 138</span>} <span class="comment">// namespace operations_research</span></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><span class="preprocessor">#endif </span><span class="comment">// SWIG</span></div>
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<div class="line"><a id="l00141" name="l00141"></a><span class="lineno"> 141</span><span class="preprocessor">#endif </span><span class="comment">// OR_TOOLS_GLOP_ENTERING_VARIABLE_H_</span></div>
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<div class="ttc" id="abasis__representation_8h_html"><div class="ttname"><a href="basis__representation_8h.html">basis_representation.h</a></div></div>
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<div class="ttc" id="abitset_8h_html"><div class="ttname"><a href="bitset_8h.html">bitset.h</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1_integer_distribution_html"><div class="ttname"><a href="classoperations__research_1_1_integer_distribution.html">operations_research::IntegerDistribution</a></div><div class="ttdef"><b>Definition:</b> <a href="stats_8h_source.html#l00287">stats.h:287</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1_stats_group_html"><div class="ttname"><a href="classoperations__research_1_1_stats_group.html">operations_research::StatsGroup</a></div><div class="ttdef"><b>Definition:</b> <a href="stats_8h_source.html#l00131">stats.h:131</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1glop_1_1_entering_variable_html"><div class="ttname"><a href="classoperations__research_1_1glop_1_1_entering_variable.html">operations_research::glop::EnteringVariable</a></div><div class="ttdef"><b>Definition:</b> <a href="entering__variable_8h_source.html#l00044">entering_variable.h:44</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1glop_1_1_entering_variable_html_a2dbed549d25654617b466ea86d51fa51"><div class="ttname"><a href="classoperations__research_1_1glop_1_1_entering_variable.html#a2dbed549d25654617b466ea86d51fa51">operations_research::glop::EnteringVariable::EnteringVariable</a></div><div class="ttdeci">EnteringVariable(const VariablesInfo &variables_info, absl::BitGenRef random, ReducedCosts *reduced_costs)</div><div class="ttdef"><b>Definition:</b> <a href="entering__variable_8cc_source.html#l00025">entering_variable.cc:25</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1glop_1_1_entering_variable_html_aa271bff260917fd62d0d7509b7118ad6"><div class="ttname"><a href="classoperations__research_1_1glop_1_1_entering_variable.html#aa271bff260917fd62d0d7509b7118ad6">operations_research::glop::EnteringVariable::DualPhaseIChooseEnteringColumn</a></div><div class="ttdeci">ABSL_MUST_USE_RESULT Status DualPhaseIChooseEnteringColumn(bool nothing_to_recompute, const UpdateRow &update_row, Fractional cost_variation, ColIndex *entering_col)</div><div class="ttdef"><b>Definition:</b> <a href="entering__variable_8cc_source.html#l00230">entering_variable.cc:230</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1glop_1_1_entering_variable_html_ae7202d055b6b172a8a1da4f5b136f9ea"><div class="ttname"><a href="classoperations__research_1_1glop_1_1_entering_variable.html#ae7202d055b6b172a8a1da4f5b136f9ea">operations_research::glop::EnteringVariable::SetParameters</a></div><div class="ttdeci">void SetParameters(const GlopParameters &parameters)</div><div class="ttdef"><b>Definition:</b> <a href="entering__variable_8cc_source.html#l00346">entering_variable.cc:346</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1glop_1_1_entering_variable_html_aeccc8138b268e621d96d105e0ddd474a"><div class="ttname"><a href="classoperations__research_1_1glop_1_1_entering_variable.html#aeccc8138b268e621d96d105e0ddd474a">operations_research::glop::EnteringVariable::DeterministicTime</a></div><div class="ttdeci">double DeterministicTime() const</div><div class="ttdef"><b>Definition:</b> <a href="entering__variable_8h_source.html#l00077">entering_variable.h:77</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1glop_1_1_entering_variable_html_af9bc435481ae9e6e60d66a65d5394a7f"><div class="ttname"><a href="classoperations__research_1_1glop_1_1_entering_variable.html#af9bc435481ae9e6e60d66a65d5394a7f">operations_research::glop::EnteringVariable::StatString</a></div><div class="ttdeci">std::string StatString() const</div><div class="ttdef"><b>Definition:</b> <a href="entering__variable_8h_source.html#l00072">entering_variable.h:72</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1glop_1_1_entering_variable_html_afaf135d40c257d0f1a49aa8e795c9b03"><div class="ttname"><a href="classoperations__research_1_1glop_1_1_entering_variable.html#afaf135d40c257d0f1a49aa8e795c9b03">operations_research::glop::EnteringVariable::DualChooseEnteringColumn</a></div><div class="ttdeci">ABSL_MUST_USE_RESULT Status DualChooseEnteringColumn(bool nothing_to_recompute, const UpdateRow &update_row, Fractional cost_variation, std::vector< ColIndex > *bound_flip_candidates, ColIndex *entering_col)</div><div class="ttdef"><b>Definition:</b> <a href="entering__variable_8cc_source.html#l00033">entering_variable.cc:33</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1glop_1_1_glop_parameters_html"><div class="ttname"><a href="classoperations__research_1_1glop_1_1_glop_parameters.html">operations_research::glop::GlopParameters</a></div><div class="ttdef"><b>Definition:</b> <a href="parameters_8pb_8h_source.html#l00194">parameters.pb.h:195</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1glop_1_1_reduced_costs_html"><div class="ttname"><a href="classoperations__research_1_1glop_1_1_reduced_costs.html">operations_research::glop::ReducedCosts</a></div><div class="ttdef"><b>Definition:</b> <a href="reduced__costs_8h_source.html#l00049">reduced_costs.h:49</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1glop_1_1_status_html"><div class="ttname"><a href="classoperations__research_1_1glop_1_1_status.html">operations_research::glop::Status</a></div><div class="ttdef"><b>Definition:</b> <a href="status_8h_source.html#l00026">status.h:26</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1glop_1_1_update_row_html"><div class="ttname"><a href="classoperations__research_1_1glop_1_1_update_row.html">operations_research::glop::UpdateRow</a></div><div class="ttdef"><b>Definition:</b> <a href="update__row_8h_source.html#l00040">update_row.h:40</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1glop_1_1_variables_info_html"><div class="ttname"><a href="classoperations__research_1_1glop_1_1_variables_info.html">operations_research::glop::VariablesInfo</a></div><div class="ttdef"><b>Definition:</b> <a href="variables__info_8h_source.html#l00055">variables_info.h:55</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#l00120">cp_model_fz_solver.cc:120</a></div></div>
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<div class="ttc" id="alp__data_8h_html"><div class="ttname"><a href="lp__data_8h.html">lp_data.h</a></div></div>
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<div class="ttc" id="alp__types_8h_html"><div class="ttname"><a href="lp__types_8h.html">lp_types.h</a></div></div>
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<div class="ttc" id="amarkowitz_8cc_html_aa9d6c98fdf8d89b0e2321fda02adc82c"><div class="ttname"><a href="markowitz_8cc.html#aa9d6c98fdf8d89b0e2321fda02adc82c">col</a></div><div class="ttdeci">ColIndex col</div><div class="ttdef"><b>Definition:</b> <a href="markowitz_8cc_source.html#l00183">markowitz.cc:183</a></div></div>
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<div class="ttc" id="anamespaceoperations__research_1_1glop_html_a733947145e3e1631165b618b05c9ccb7"><div class="ttname"><a href="namespaceoperations__research_1_1glop.html#a733947145e3e1631165b618b05c9ccb7">operations_research::glop::Fractional</a></div><div class="ttdeci">double Fractional</div><div class="ttdef"><b>Definition:</b> <a href="lp__types_8h_source.html#l00078">lp_types.h:78</a></div></div>
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<div class="ttc" id="anamespaceoperations__research_1_1glop_html_aedb714d776d86539dbb9f42ae5d7d923"><div class="ttname"><a href="namespaceoperations__research_1_1glop.html#aedb714d776d86539dbb9f42ae5d7d923">operations_research::glop::DeterministicTimeForFpOperations</a></div><div class="ttdeci">static double DeterministicTimeForFpOperations(int64_t n)</div><div class="ttdef"><b>Definition:</b> <a href="lp__types_8h_source.html#l00383">lp_types.h:383</a></div></div>
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<div class="ttc" id="anamespaceoperations__research_html"><div class="ttname"><a href="namespaceoperations__research.html">operations_research</a></div><div class="ttdoc">Collection of objects used to extend the Constraint Solver library.</div><div class="ttdef"><b>Definition:</b> <a href="dense__doubly__linked__list_8h_source.html#l00021">dense_doubly_linked_list.h:21</a></div></div>
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<div class="ttc" id="aparameters_8pb_8h_html"><div class="ttname"><a href="parameters_8pb_8h.html">parameters.pb.h</a></div></div>
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<div class="ttc" id="aprimal__edge__norms_8h_html"><div class="ttname"><a href="primal__edge__norms_8h.html">primal_edge_norms.h</a></div></div>
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<div class="ttc" id="areduced__costs_8h_html"><div class="ttname"><a href="reduced__costs_8h.html">reduced_costs.h</a></div></div>
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<div class="ttc" id="arevised__simplex_8cc_html_a773239be94b6b64ba8fa2367b86776be"><div class="ttname"><a href="revised__simplex_8cc.html#a773239be94b6b64ba8fa2367b86776be">coeff_magnitude</a></div><div class="ttdeci">Fractional coeff_magnitude</div><div class="ttdef"><b>Definition:</b> <a href="revised__simplex_8cc_source.html#l01982">revised_simplex.cc:1982</a></div></div>
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<div class="ttc" id="arevised__simplex_8cc_html_af01c50e388647c921aa7d9c77f2b72b2"><div class="ttname"><a href="revised__simplex_8cc.html#af01c50e388647c921aa7d9c77f2b72b2">ratio</a></div><div class="ttdeci">Fractional ratio</div><div class="ttdef"><b>Definition:</b> <a href="revised__simplex_8cc_source.html#l01981">revised_simplex.cc:1981</a></div></div>
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<div class="ttc" id="astats_8h_html"><div class="ttname"><a href="stats_8h.html">stats.h</a></div></div>
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<div class="ttc" id="astatus_8h_html"><div class="ttname"><a href="status_8h.html">status.h</a></div></div>
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<div class="ttc" id="aupdate__row_8h_html"><div class="ttname"><a href="update__row_8h.html">update_row.h</a></div></div>
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<div class="ttc" id="avariables__info_8h_html"><div class="ttname"><a href="variables__info_8h.html">variables_info.h</a></div></div>
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