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<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 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 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 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 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 name="l00005"></a><span class="lineno"> 5</span> <span class="comment">//</span></div>
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<div class="line"><a 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 name="l00007"></a><span class="lineno"> 7</span> <span class="comment">//</span></div>
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<div class="line"><a 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 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 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 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 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 name="l00013"></a><span class="lineno"> 13</span>  </div>
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<div class="line"><a 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 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 name="l00016"></a><span class="lineno"> 16</span>  </div>
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<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="preprocessor">#include "absl/random/bit_gen_ref.h"</span></div>
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<div class="line"><a name="l00018"></a><span class="lineno"> 18</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 name="l00019"></a><span class="lineno"> 19</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 name="l00020"></a><span class="lineno"> 20</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 name="l00021"></a><span class="lineno"> 21</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 name="l00022"></a><span class="lineno"> 22</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 name="l00023"></a><span class="lineno"> 23</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 name="l00024"></a><span class="lineno"> 24</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 name="l00025"></a><span class="lineno"> 25</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 name="l00026"></a><span class="lineno"> 26</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 name="l00027"></a><span class="lineno"> 27</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 name="l00028"></a><span class="lineno"> 28</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 name="l00029"></a><span class="lineno"> 29</span>  </div>
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<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="preprocessor">#if !SWIG</span></div>
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<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>  </div>
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<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="keyword">namespace </span><a class="code" href="namespaceoperations__research.html">operations_research</a> {</div>
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<div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="keyword">namespace </span>glop {</div>
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<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>  </div>
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<div class="line"><a name="l00035"></a><span class="lineno"> 35</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 name="l00036"></a><span class="lineno"> 36</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 name="l00037"></a><span class="lineno"> 37</span> <span class="comment">//</span></div>
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<div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="comment">// Terminology:</span></div>
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<div class="line"><a name="l00039"></a><span class="lineno"> 39</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 name="l00040"></a><span class="lineno"> 40</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 name="l00041"></a><span class="lineno"> 41</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 name="l00042"></a><span class="lineno"><a class="line" href="classoperations__research_1_1glop_1_1_entering_variable.html"> 42</a></span> <span class="keyword">class </span><a class="code" href="classoperations__research_1_1glop_1_1_entering_variable.html">EnteringVariable</a> {</div>
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<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  <span class="keyword">public</span>:</div>
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<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  <span class="comment">// Takes references to the linear program data we need.</span></div>
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<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  <a class="code" href="classoperations__research_1_1glop_1_1_entering_variable.html#a2dbed549d25654617b466ea86d51fa51">EnteringVariable</a>(<span class="keyword">const</span> <a class="code" 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 name="l00046"></a><span class="lineno"> 46</span>  <a class="code" href="classoperations__research_1_1glop_1_1_reduced_costs.html">ReducedCosts</a>* reduced_costs);</div>
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<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  </div>
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<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  <span class="comment">// Dual optimization phase (i.e. phase II) ratio test.</span></div>
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<div class="line"><a name="l00049"></a><span class="lineno"> 49</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 name="l00050"></a><span class="lineno"> 50</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 name="l00051"></a><span class="lineno"> 51</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 name="l00052"></a><span class="lineno"> 52</span>  <span class="comment">// for all the columns.</span></div>
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<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  ABSL_MUST_USE_RESULT <a class="code" href="classoperations__research_1_1glop_1_1_status.html">Status</a> <a class="code" href="classoperations__research_1_1glop_1_1_entering_variable.html#afaf135d40c257d0f1a49aa8e795c9b03">DualChooseEnteringColumn</a>(</div>
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<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  <span class="keywordtype">bool</span> nothing_to_recompute, <span class="keyword">const</span> <a class="code" href="classoperations__research_1_1glop_1_1_update_row.html">UpdateRow</a>& update_row,</div>
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<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <a class="code" 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 name="l00056"></a><span class="lineno"> 56</span>  ColIndex* entering_col);</div>
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<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  </div>
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<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  <span class="comment">// Dual feasibility phase (i.e. phase I) ratio test.</span></div>
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<div class="line"><a name="l00059"></a><span class="lineno"> 59</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 name="l00060"></a><span class="lineno"> 60</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 name="l00061"></a><span class="lineno"> 61</span>  <span class="comment">// the one that minimize the sum of infeasibilities when applied.</span></div>
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<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  ABSL_MUST_USE_RESULT <a class="code" href="classoperations__research_1_1glop_1_1_status.html">Status</a> <a class="code" href="classoperations__research_1_1glop_1_1_entering_variable.html#aa271bff260917fd62d0d7509b7118ad6">DualPhaseIChooseEnteringColumn</a>(</div>
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<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  <span class="keywordtype">bool</span> nothing_to_recompute, <span class="keyword">const</span> <a class="code" href="classoperations__research_1_1glop_1_1_update_row.html">UpdateRow</a>& update_row,</div>
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<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  <a class="code" href="namespaceoperations__research_1_1glop.html#a733947145e3e1631165b618b05c9ccb7">Fractional</a> cost_variation, ColIndex* entering_col);</div>
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<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  </div>
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<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  <span class="comment">// Sets the parameters.</span></div>
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<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  <span class="keywordtype">void</span> <a class="code" href="classoperations__research_1_1glop_1_1_entering_variable.html#ae7202d055b6b172a8a1da4f5b136f9ea">SetParameters</a>(<span class="keyword">const</span> GlopParameters& <a class="code" href="cp__model__fz__solver_8cc.html#a10a1eab179b472c030bdc2a2efef7219">parameters</a>);</div>
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<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  </div>
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<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  <span class="comment">// Stats related functions.</span></div>
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<div class="line"><a name="l00070"></a><span class="lineno"><a class="line" href="classoperations__research_1_1glop_1_1_entering_variable.html#af9bc435481ae9e6e60d66a65d5394a7f"> 70</a></span>  std::string <a class="code" 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 name="l00071"></a><span class="lineno"> 71</span>  </div>
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<div class="line"><a name="l00072"></a><span class="lineno"> 72</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 name="l00073"></a><span class="lineno"> 73</span>  <span class="comment">//</span></div>
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<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  <span class="comment">// TODO(user): Be exhausitive and more precise.</span></div>
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<div class="line"><a name="l00075"></a><span class="lineno"><a class="line" href="classoperations__research_1_1glop_1_1_entering_variable.html#aeccc8138b268e621d96d105e0ddd474a"> 75</a></span>  <span class="keywordtype">double</span> <a class="code" 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 name="l00076"></a><span class="lineno"> 76</span>  <span class="keywordflow">return</span> <a class="code" href="namespaceoperations__research_1_1glop.html#aedb714d776d86539dbb9f42ae5d7d923">DeterministicTimeForFpOperations</a>(num_operations_);</div>
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<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  }</div>
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<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  </div>
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<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  <span class="keyword">private</span>:</div>
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<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  <span class="comment">// Problem data that should be updated from outside.</span></div>
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<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  <span class="keyword">const</span> <a class="code" href="classoperations__research_1_1glop_1_1_variables_info.html">VariablesInfo</a>& variables_info_;</div>
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<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  </div>
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<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  absl::BitGenRef random_;</div>
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<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  <a class="code" href="classoperations__research_1_1glop_1_1_reduced_costs.html">ReducedCosts</a>* reduced_costs_;</div>
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<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  </div>
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<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  <span class="comment">// Internal data.</span></div>
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<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  GlopParameters parameters_;</div>
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<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  </div>
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<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  <span class="comment">// Stats.</span></div>
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<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  <span class="keyword">struct </span>Stats : <span class="keyword">public</span> <a class="code" href="classoperations__research_1_1_stats_group.html">StatsGroup</a> {</div>
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<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  Stats()</div>
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<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  : <a class="code" href="classoperations__research_1_1_stats_group.html">StatsGroup</a>(<span class="stringliteral">"EnteringVariable"</span>),</div>
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<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  num_perfect_ties(<span class="stringliteral">"num_perfect_ties"</span>, this) {}</div>
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<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  <a class="code" href="classoperations__research_1_1_integer_distribution.html">IntegerDistribution</a> num_perfect_ties;</div>
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<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  };</div>
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<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  Stats stats_;</div>
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<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  </div>
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<div class="line"><a name="l00098"></a><span class="lineno"> 98</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 name="l00099"></a><span class="lineno"> 99</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 name="l00100"></a><span class="lineno"> 100</span>  <span class="comment">// candidate #2, #3, ...; because the first tied candidate is remembered</span></div>
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<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  <span class="comment">// anyway.</span></div>
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<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  std::vector<ColIndex> equivalent_entering_choices_;</div>
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<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  </div>
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<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  <span class="comment">// Store a column with its update coefficient and ratio.</span></div>
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<div class="line"><a name="l00105"></a><span class="lineno"> 105</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 name="l00106"></a><span class="lineno"> 106</span>  <span class="keyword">struct </span>ColWithRatio {</div>
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<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  ColWithRatio(ColIndex _col, <a class="code" href="namespaceoperations__research_1_1glop.html#a733947145e3e1631165b618b05c9ccb7">Fractional</a> reduced_cost, <a class="code" href="namespaceoperations__research_1_1glop.html#a733947145e3e1631165b618b05c9ccb7">Fractional</a> coeff_m)</div>
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<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  : <a class="code" href="markowitz_8cc.html#aa9d6c98fdf8d89b0e2321fda02adc82c">col</a>(_col), <a class="code" href="revised__simplex_8cc.html#af01c50e388647c921aa7d9c77f2b72b2">ratio</a>(reduced_cost / coeff_m), <a class="code" href="revised__simplex_8cc.html#a773239be94b6b64ba8fa2367b86776be">coeff_magnitude</a>(coeff_m) {}</div>
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<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  </div>
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<div class="line"><a name="l00110"></a><span class="lineno"> 110</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 name="l00111"></a><span class="lineno"> 111</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 name="l00112"></a><span class="lineno"> 112</span>  <span class="keywordflow">if</span> (<a class="code" href="revised__simplex_8cc.html#af01c50e388647c921aa7d9c77f2b72b2">ratio</a> == other.ratio) {</div>
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<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  <span class="keywordflow">if</span> (<a class="code" href="revised__simplex_8cc.html#a773239be94b6b64ba8fa2367b86776be">coeff_magnitude</a> == other.coeff_magnitude) {</div>
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<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  <span class="keywordflow">return</span> <a class="code" href="markowitz_8cc.html#aa9d6c98fdf8d89b0e2321fda02adc82c">col</a> > other.col;</div>
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<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  }</div>
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<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  <span class="keywordflow">return</span> <a class="code" href="revised__simplex_8cc.html#a773239be94b6b64ba8fa2367b86776be">coeff_magnitude</a> < other.coeff_magnitude;</div>
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<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  }</div>
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<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  <span class="keywordflow">return</span> <a class="code" href="revised__simplex_8cc.html#af01c50e388647c921aa7d9c77f2b72b2">ratio</a> > other.ratio;</div>
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<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  }</div>
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<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  </div>
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<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  ColIndex <a class="code" href="markowitz_8cc.html#aa9d6c98fdf8d89b0e2321fda02adc82c">col</a>;</div>
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<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  <a class="code" href="namespaceoperations__research_1_1glop.html#a733947145e3e1631165b618b05c9ccb7">Fractional</a> <a class="code" href="revised__simplex_8cc.html#af01c50e388647c921aa7d9c77f2b72b2">ratio</a>;</div>
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<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  <a class="code" href="namespaceoperations__research_1_1glop.html#a733947145e3e1631165b618b05c9ccb7">Fractional</a> <a class="code" href="revised__simplex_8cc.html#a773239be94b6b64ba8fa2367b86776be">coeff_magnitude</a>;</div>
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<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  };</div>
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<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  </div>
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<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  <span class="comment">// Temporary vector used to hold breakpoints.</span></div>
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<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  std::vector<ColWithRatio> breakpoints_;</div>
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<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  </div>
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<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  <span class="comment">// Counter for the deterministic time.</span></div>
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<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  int64_t num_operations_ = 0;</div>
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<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  </div>
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<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  DISALLOW_COPY_AND_ASSIGN(<a class="code" href="classoperations__research_1_1glop_1_1_entering_variable.html#a2dbed549d25654617b466ea86d51fa51">EnteringVariable</a>);</div>
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<div class="line"><a name="l00133"></a><span class="lineno"> 133</span> };</div>
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<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  </div>
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<div class="line"><a name="l00135"></a><span class="lineno"> 135</span> } <span class="comment">// namespace glop</span></div>
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<div class="line"><a name="l00136"></a><span class="lineno"> 136</span> } <span class="comment">// namespace operations_research</span></div>
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<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  </div>
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<div class="line"><a name="l00138"></a><span class="lineno"> 138</span> <span class="preprocessor">#endif </span><span class="comment">// SWIG</span></div>
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<div class="line"><a name="l00139"></a><span class="lineno"> 139</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#l00042">entering_variable.h:42</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#l00075">entering_variable.h:75</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#l00070">entering_variable.h:70</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_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#l00024">status.h:24</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#l00108">cp_model_fz_solver.cc:108</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#l00380">lp_types.h:380</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#l01806">revised_simplex.cc:1806</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#l01805">revised_simplex.cc:1805</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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