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 <span id="projectnumber">8.1</span>
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<div class="title">update_row.h</div> </div>
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<a href="update__row_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 2010-2018 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_UPDATE_ROW_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_UPDATE_ROW_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 "<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="l00018"></a><span class="lineno"> 18</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="l00019"></a><span class="lineno"> 19</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="l00020"></a><span class="lineno"> 20</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="l00021"></a><span class="lineno"> 21</span> <span class="preprocessor">#include "<a class="code" href="scattered__vector_8h.html">ortools/lp_data/scattered_vector.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="stats_8h.html">ortools/util/stats.h</a>"</span></div>
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<div class="line"><a name="l00023"></a><span class="lineno"> 23</span>  </div>
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<div class="line"><a name="l00024"></a><span class="lineno"> 24</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="l00025"></a><span class="lineno"> 25</span> <span class="keyword">namespace </span>glop {</div>
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<div class="line"><a name="l00026"></a><span class="lineno"> 26</span>  </div>
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<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="comment">// During a simplex iteration, when the basis 'leaving_row' has been</span></div>
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<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="comment">// selected, one of the main quantities needed in the primal or dual simplex</span></div>
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<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="comment">// algorithm is called the update row.</span></div>
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<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="comment">//</span></div>
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<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="comment">// By definition, update_row[col] is the coefficient at position</span></div>
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<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="comment">// 'leaving_row' in the current basis of the column 'col' of the matrix A.</span></div>
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<div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="comment">//</span></div>
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<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="comment">// One efficient way to compute it is to compute the left inverse by B of the</span></div>
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<div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="comment">// unit vector with a one at the given leaving_row, and then to take the</span></div>
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<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="comment">// scalar product of this left inverse with all the columns of A:</span></div>
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<div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="comment">// update_row[col] = (unit_{leaving_row} . B^{-1}) . A_col</span></div>
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<div class="line"><a name="l00038"></a><span class="lineno"><a class="line" href="classoperations__research_1_1glop_1_1_update_row.html"> 38</a></span> <span class="keyword">class </span><a class="code" href="classoperations__research_1_1glop_1_1_update_row.html">UpdateRow</a> {</div>
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<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  <span class="keyword">public</span>:</div>
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<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  <span class="comment">// Takes references to the linear program data we need.</span></div>
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<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  <a class="code" href="classoperations__research_1_1glop_1_1_update_row.html#a69f5823dcd3e25a2f39ddc339ad58679">UpdateRow</a>(<span class="keyword">const</span> <a class="code" href="classoperations__research_1_1glop_1_1_compact_sparse_matrix.html">CompactSparseMatrix</a>& matrix,</div>
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<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  <span class="keyword">const</span> <a class="code" href="classoperations__research_1_1glop_1_1_compact_sparse_matrix.html">CompactSparseMatrix</a>& transposed_matrix,</div>
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<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  <span class="keyword">const</span> <a class="code" href="classoperations__research_1_1glop_1_1_variables_info.html">VariablesInfo</a>& variables_info, <span class="keyword">const</span> <a class="code" href="classoperations__research_1_1glop_1_1_strict_i_t_i_vector.html">RowToColMapping</a>& basis,</div>
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<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  <span class="keyword">const</span> <a class="code" href="classoperations__research_1_1glop_1_1_basis_factorization.html">BasisFactorization</a>& basis_factorization);</div>
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<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  </div>
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<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  <span class="comment">// Invalidates the current update row and unit_row_left_inverse so the next</span></div>
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<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  <span class="comment">// call to ComputeUpdateRow() will recompute everything and not just return</span></div>
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<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  <span class="comment">// right away.</span></div>
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<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  <span class="keywordtype">void</span> <a class="code" href="classoperations__research_1_1glop_1_1_update_row.html#ab9adfea0e765ab447b8ce7730a6cd812">Invalidate</a>();</div>
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<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  </div>
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<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  <span class="comment">// Computes the relevant coefficients (See GetIsRelevantBitRow() in</span></div>
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<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  <span class="comment">// VariablesInfo) of the update row. The result is only computed once until</span></div>
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<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  <span class="comment">// the next Invalidate() call and calling this function more than once will</span></div>
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<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  <span class="comment">// have no effect until then.</span></div>
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<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <span class="keywordtype">void</span> <a class="code" href="classoperations__research_1_1glop_1_1_update_row.html#ac9f13d2561598d3a04b409dd7b4e1f0c">ComputeUpdateRow</a>(RowIndex leaving_row);</div>
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<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  </div>
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<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  <span class="comment">// Returns the left inverse of the unit row as computed by the last call to</span></div>
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<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  <span class="comment">// ComputeUpdateRow(). In debug mode, we check that ComputeUpdateRow() was</span></div>
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<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  <span class="comment">// called since the last Invalidate().</span></div>
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<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  <span class="keyword">const</span> <a class="code" href="structoperations__research_1_1glop_1_1_scattered_row.html">ScatteredRow</a>& <a class="code" href="classoperations__research_1_1glop_1_1_update_row.html#a0c3551dfd558be8edc0bd8d565cfca30">GetUnitRowLeftInverse</a>() <span class="keyword">const</span>;</div>
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<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  </div>
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<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  <span class="comment">// Returns the update coefficients and non-zero positions corresponding to the</span></div>
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<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  <span class="comment">// last call to ComputeUpdateRow().</span></div>
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<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  <span class="keyword">const</span> <a class="code" href="classoperations__research_1_1glop_1_1_strict_i_t_i_vector.html">DenseRow</a>& <a class="code" href="classoperations__research_1_1glop_1_1_update_row.html#a30fddb9e35865ba28420bd52538a183f">GetCoefficients</a>() <span class="keyword">const</span>;</div>
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<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  <span class="keyword">const</span> <a class="code" href="namespaceoperations__research_1_1glop.html#a2b83a25cb4fd203c57a7155699fab246">ColIndexVector</a>& <a class="code" href="classoperations__research_1_1glop_1_1_update_row.html#af8e957f1c8389089554ded7bd2b7b45f">GetNonZeroPositions</a>() <span class="keyword">const</span>;</div>
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<div class="line"><a name="l00066"></a><span class="lineno"><a class="line" href="classoperations__research_1_1glop_1_1_update_row.html#abd6d81960f38fe1a69a153b03e60d47e"> 66</a></span>  <span class="keyword">const</span> <a class="code" href="namespaceoperations__research_1_1glop.html#a733947145e3e1631165b618b05c9ccb7">Fractional</a> <a class="code" href="classoperations__research_1_1glop_1_1_update_row.html#abd6d81960f38fe1a69a153b03e60d47e">GetCoefficient</a>(ColIndex <a class="code" href="markowitz_8cc.html#aa9d6c98fdf8d89b0e2321fda02adc82c">col</a>)<span class="keyword"> const </span>{</div>
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<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  <span class="keywordflow">return</span> coefficient_[<a class="code" href="markowitz_8cc.html#aa9d6c98fdf8d89b0e2321fda02adc82c">col</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>  </div>
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<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  <span class="comment">// This must be called after a call to ComputeUpdateRow(). It will fill</span></div>
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<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  <span class="comment">// all the non-relevant positions that where not filled by ComputeUpdateRow().</span></div>
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<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  <span class="keywordtype">void</span> <a class="code" href="classoperations__research_1_1glop_1_1_update_row.html#a7b39f45e976b642dac5b652e0a455e8f">RecomputeFullUpdateRow</a>(RowIndex leaving_row);</div>
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<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  </div>
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<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  <span class="comment">// Sets to zero the coefficient for column col.</span></div>
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<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  <span class="keywordtype">void</span> <a class="code" href="classoperations__research_1_1glop_1_1_update_row.html#a985c788192edce2013ad59d4f0c934cf">IgnoreUpdatePosition</a>(ColIndex <a class="code" href="markowitz_8cc.html#aa9d6c98fdf8d89b0e2321fda02adc82c">col</a>);</div>
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<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  </div>
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<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  <span class="comment">// Sets the algorithm parameters.</span></div>
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<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  <span class="keywordtype">void</span> <a class="code" href="classoperations__research_1_1glop_1_1_update_row.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="l00079"></a><span class="lineno"> 79</span>  </div>
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<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  <span class="comment">// Returns statistics about this class as a string.</span></div>
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<div class="line"><a name="l00081"></a><span class="lineno"><a class="line" href="classoperations__research_1_1glop_1_1_update_row.html#af9bc435481ae9e6e60d66a65d5394a7f"> 81</a></span>  std::string <a class="code" href="classoperations__research_1_1glop_1_1_update_row.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="l00082"></a><span class="lineno"> 82</span>  </div>
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<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  <span class="comment">// Only used for testing.</span></div>
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<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  <span class="comment">// Computes as the update row the product 'lhs' times the linear program</span></div>
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<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  <span class="comment">// matrix given at construction. Only the relevant columns matter (see</span></div>
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<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  <span class="comment">// VariablesInfo) and 'algorithm' can be one of "column", "row" or</span></div>
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<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  <span class="comment">// "row_hypersparse".</span></div>
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<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  <span class="keywordtype">void</span> <a class="code" href="classoperations__research_1_1glop_1_1_update_row.html#a3e7cad3b8c461fe473b1bd98b6a24156">ComputeUpdateRowForBenchmark</a>(<span class="keyword">const</span> <a class="code" href="classoperations__research_1_1glop_1_1_strict_i_t_i_vector.html">DenseRow</a>& lhs,</div>
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<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  <span class="keyword">const</span> std::string& algorithm);</div>
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<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  </div>
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<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  <span class="comment">// Deterministic time used by the scalar product computation of this class.</span></div>
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<div class="line"><a name="l00092"></a><span class="lineno"><a class="line" href="classoperations__research_1_1glop_1_1_update_row.html#aeccc8138b268e621d96d105e0ddd474a"> 92</a></span>  <span class="keywordtype">double</span> <a class="code" href="classoperations__research_1_1glop_1_1_update_row.html#aeccc8138b268e621d96d105e0ddd474a">DeterministicTime</a>()<span class="keyword"> const </span>{</div>
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<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  <span class="keywordflow">return</span> <a class="code" href="namespaceoperations__research_1_1glop.html#a25b69b7b46ff726b6412851d1455d777">DeterministicTimeForFpOperations</a>(num_operations_);</div>
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<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  }</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>  <span class="comment">// This returns the asked unit row left inverse. It temporarily invalidate</span></div>
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<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  <span class="comment">// the class state by calling Invalidate().</span></div>
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<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  <span class="keyword">const</span> <a class="code" href="structoperations__research_1_1glop_1_1_scattered_row.html">ScatteredRow</a>& <a class="code" href="classoperations__research_1_1glop_1_1_update_row.html#a2355c817cae2bbd316f28aea2e842761">ComputeAndGetUnitRowLeftInverse</a>(RowIndex leaving_row);</div>
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<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  </div>
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<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  <span class="keyword">private</span>:</div>
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<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  <span class="comment">// Computes the left inverse of the given unit row, and stores it in</span></div>
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<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  <span class="comment">// unit_row_left_inverse_.</span></div>
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<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  <span class="keywordtype">void</span> ComputeUnitRowLeftInverse(RowIndex leaving_row);</div>
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<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  </div>
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<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  <span class="comment">// ComputeUpdateRow() does the common work and calls one of these functions</span></div>
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<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  <span class="comment">// depending on the situation.</span></div>
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<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  <span class="keywordtype">void</span> ComputeUpdatesRowWise();</div>
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<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  <span class="keywordtype">void</span> ComputeUpdatesRowWiseHypersparse();</div>
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<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  <span class="keywordtype">void</span> ComputeUpdatesColumnWise();</div>
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<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  </div>
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<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  <span class="comment">// Problem data that should be updated from outside.</span></div>
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<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  <span class="keyword">const</span> <a class="code" href="classoperations__research_1_1glop_1_1_compact_sparse_matrix.html">CompactSparseMatrix</a>& matrix_;</div>
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<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  <span class="keyword">const</span> <a class="code" href="classoperations__research_1_1glop_1_1_compact_sparse_matrix.html">CompactSparseMatrix</a>& transposed_matrix_;</div>
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<div class="line"><a name="l00114"></a><span class="lineno"> 114</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="l00115"></a><span class="lineno"> 115</span>  <span class="keyword">const</span> <a class="code" href="classoperations__research_1_1glop_1_1_strict_i_t_i_vector.html">RowToColMapping</a>& basis_;</div>
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<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  <span class="keyword">const</span> <a class="code" href="classoperations__research_1_1glop_1_1_basis_factorization.html">BasisFactorization</a>& basis_factorization_;</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="comment">// Left inverse by B of a unit row. Its scalar product with a column 'a' of A</span></div>
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<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  <span class="comment">// gives the value of the right inverse of 'a' on the 'leaving_row'.</span></div>
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<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  <a class="code" href="structoperations__research_1_1glop_1_1_scattered_row.html">ScatteredRow</a> unit_row_left_inverse_;</div>
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<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  </div>
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<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  <span class="comment">// The non-zeros of unit_row_left_inverse_ above the drop tolerance.</span></div>
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<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  std::vector<ColIndex> unit_row_left_inverse_filtered_non_zeros_;</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>  <span class="comment">// Holds the current update row data.</span></div>
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<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  <span class="comment">// TODO(user): Introduce a ScatteredSparseRow class?</span></div>
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<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  <a class="code" href="namespaceoperations__research_1_1glop.html#a2b83a25cb4fd203c57a7155699fab246">ColIndexVector</a> non_zero_position_list_;</div>
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<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  <a class="code" href="classoperations__research_1_1_bitset64.html">DenseBitRow</a> non_zero_position_set_;</div>
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<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  <a class="code" href="classoperations__research_1_1glop_1_1_strict_i_t_i_vector.html">DenseRow</a> coefficient_;</div>
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<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  </div>
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<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  <span class="comment">// Boolean used to avoid recomputing many times the same thing.</span></div>
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<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  <span class="keywordtype">bool</span> compute_update_row_;</div>
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<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  RowIndex update_row_computed_for_;</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">// Statistics about this class.</span></div>
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<div class="line"><a name="l00136"></a><span class="lineno"> 136</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="l00137"></a><span class="lineno"> 137</span>  Stats()</div>
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<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  : <a class="code" href="classoperations__research_1_1_stats_group.html">StatsGroup</a>(<span class="stringliteral">"UpdateRow"</span>),</div>
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<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  unit_row_left_inverse_density(<span class="stringliteral">"unit_row_left_inverse_density"</span>, this),</div>
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<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  unit_row_left_inverse_accuracy(<span class="stringliteral">"unit_row_left_inverse_accuracy"</span>,</div>
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<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  this),</div>
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<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  update_row_density(<span class="stringliteral">"update_row_density"</span>, this) {}</div>
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<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  <a class="code" href="classoperations__research_1_1_ratio_distribution.html">RatioDistribution</a> unit_row_left_inverse_density;</div>
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<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  <a class="code" href="classoperations__research_1_1_double_distribution.html">DoubleDistribution</a> unit_row_left_inverse_accuracy;</div>
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<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  <a class="code" href="classoperations__research_1_1_ratio_distribution.html">RatioDistribution</a> update_row_density;</div>
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<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  };</div>
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<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  </div>
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<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  <span class="comment">// Track the number of basic floating point multiplication.</span></div>
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<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  <span class="comment">// Used by DeterministicTime().</span></div>
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<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  <a class="code" href="integral__types_8h.html#a7cde0074dfd288f2d70c0e035dacb28a">int64</a> num_operations_;</div>
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<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  </div>
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<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  <span class="comment">// Glop standard classes.</span></div>
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<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  GlopParameters parameters_;</div>
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<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  Stats stats_;</div>
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<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  </div>
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<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  DISALLOW_COPY_AND_ASSIGN(<a class="code" href="classoperations__research_1_1glop_1_1_update_row.html#a69f5823dcd3e25a2f39ddc339ad58679">UpdateRow</a>);</div>
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<div class="line"><a name="l00157"></a><span class="lineno"> 157</span> };</div>
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<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  </div>
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<div class="line"><a name="l00159"></a><span class="lineno"> 159</span> } <span class="comment">// namespace glop</span></div>
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<div class="line"><a name="l00160"></a><span class="lineno"> 160</span> } <span class="comment">// namespace operations_research</span></div>
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<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  </div>
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<div class="line"><a name="l00162"></a><span class="lineno"> 162</span> <span class="preprocessor">#endif // OR_TOOLS_GLOP_UPDATE_ROW_H_</span></div>
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</div><!-- fragment --></div><!-- contents -->
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</div><!-- doc-content -->
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<div class="ttc" id="aclassoperations__research_1_1glop_1_1_compact_sparse_matrix_html"><div class="ttname"><a href="classoperations__research_1_1glop_1_1_compact_sparse_matrix.html">operations_research::glop::CompactSparseMatrix</a></div><div class="ttdef"><b>Definition:</b> <a href="sparse_8h_source.html#l00288">sparse.h:288</a></div></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="aclassoperations__research_1_1glop_1_1_update_row_html_af9bc435481ae9e6e60d66a65d5394a7f"><div class="ttname"><a href="classoperations__research_1_1glop_1_1_update_row.html#af9bc435481ae9e6e60d66a65d5394a7f">operations_research::glop::UpdateRow::StatString</a></div><div class="ttdeci">std::string StatString() const</div><div class="ttdef"><b>Definition:</b> <a href="update__row_8h_source.html#l00081">update_row.h:81</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_update_row_html_a985c788192edce2013ad59d4f0c934cf"><div class="ttname"><a href="classoperations__research_1_1glop_1_1_update_row.html#a985c788192edce2013ad59d4f0c934cf">operations_research::glop::UpdateRow::IgnoreUpdatePosition</a></div><div class="ttdeci">void IgnoreUpdatePosition(ColIndex col)</div><div class="ttdef"><b>Definition:</b> <a href="update__row_8cc_source.html#l00045">update_row.cc:45</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1_ratio_distribution_html"><div class="ttname"><a href="classoperations__research_1_1_ratio_distribution.html">operations_research::RatioDistribution</a></div><div class="ttdef"><b>Definition:</b> <a href="stats_8h_source.html#l00263">stats.h:263</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1glop_1_1_update_row_html_abd6d81960f38fe1a69a153b03e60d47e"><div class="ttname"><a href="classoperations__research_1_1glop_1_1_update_row.html#abd6d81960f38fe1a69a153b03e60d47e">operations_research::glop::UpdateRow::GetCoefficient</a></div><div class="ttdeci">const Fractional GetCoefficient(ColIndex col) const</div><div class="ttdef"><b>Definition:</b> <a href="update__row_8h_source.html#l00066">update_row.h:66</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">The vehicle routing library lets one model and solve generic vehicle routing problems ranging from th...</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="aclassoperations__research_1_1glop_1_1_update_row_html_aeccc8138b268e621d96d105e0ddd474a"><div class="ttname"><a href="classoperations__research_1_1glop_1_1_update_row.html#aeccc8138b268e621d96d105e0ddd474a">operations_research::glop::UpdateRow::DeterministicTime</a></div><div class="ttdeci">double DeterministicTime() const</div><div class="ttdef"><b>Definition:</b> <a href="update__row_8h_source.html#l00092">update_row.h:92</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1_bitset64_html"><div class="ttname"><a href="classoperations__research_1_1_bitset64.html">operations_research::Bitset64< ColIndex ></a></div></div>
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<div class="ttc" id="anamespaceoperations__research_1_1glop_html_a25b69b7b46ff726b6412851d1455d777"><div class="ttname"><a href="namespaceoperations__research_1_1glop.html#a25b69b7b46ff726b6412851d1455d777">operations_research::glop::DeterministicTimeForFpOperations</a></div><div class="ttdeci">static double DeterministicTimeForFpOperations(int64 n)</div><div class="ttdef"><b>Definition:</b> <a href="lp__types_8h_source.html#l00379">lp_types.h:379</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#l00038">update_row.h:38</a></div></div>
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<div class="ttc" id="aintegral__types_8h_html_a7cde0074dfd288f2d70c0e035dacb28a"><div class="ttname"><a href="integral__types_8h.html#a7cde0074dfd288f2d70c0e035dacb28a">int64</a></div><div class="ttdeci">int64_t int64</div><div class="ttdef"><b>Definition:</b> <a href="integral__types_8h_source.html#l00034">integral_types.h:34</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1glop_1_1_update_row_html_ab9adfea0e765ab447b8ce7730a6cd812"><div class="ttname"><a href="classoperations__research_1_1glop_1_1_update_row.html#ab9adfea0e765ab447b8ce7730a6cd812">operations_research::glop::UpdateRow::Invalidate</a></div><div class="ttdeci">void Invalidate()</div><div class="ttdef"><b>Definition:</b> <a href="update__row_8cc_source.html#l00040">update_row.cc:40</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#l00077">lp_types.h:77</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1glop_1_1_update_row_html_a7b39f45e976b642dac5b652e0a455e8f"><div class="ttname"><a href="classoperations__research_1_1glop_1_1_update_row.html#a7b39f45e976b642dac5b652e0a455e8f">operations_research::glop::UpdateRow::RecomputeFullUpdateRow</a></div><div class="ttdeci">void RecomputeFullUpdateRow(RowIndex leaving_row)</div><div class="ttdef"><b>Definition:</b> <a href="update__row_8cc_source.html#l00244">update_row.cc:244</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="aclassoperations__research_1_1glop_1_1_update_row_html_ac9f13d2561598d3a04b409dd7b4e1f0c"><div class="ttname"><a href="classoperations__research_1_1glop_1_1_update_row.html#ac9f13d2561598d3a04b409dd7b4e1f0c">operations_research::glop::UpdateRow::ComputeUpdateRow</a></div><div class="ttdeci">void ComputeUpdateRow(RowIndex leaving_row)</div><div class="ttdef"><b>Definition:</b> <a href="update__row_8cc_source.html#l00078">update_row.cc:78</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1glop_1_1_basis_factorization_html"><div class="ttname"><a href="classoperations__research_1_1glop_1_1_basis_factorization.html">operations_research::glop::BasisFactorization</a></div><div class="ttdef"><b>Definition:</b> <a href="basis__representation_8h_source.html#l00151">basis_representation.h:151</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1glop_1_1_strict_i_t_i_vector_html"><div class="ttname"><a href="classoperations__research_1_1glop_1_1_strict_i_t_i_vector.html">operations_research::glop::StrictITIVector< RowIndex, ColIndex ></a></div></div>
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<div class="ttc" id="anamespaceoperations__research_1_1glop_html_a2b83a25cb4fd203c57a7155699fab246"><div class="ttname"><a href="namespaceoperations__research_1_1glop.html#a2b83a25cb4fd203c57a7155699fab246">operations_research::glop::ColIndexVector</a></div><div class="ttdeci">std::vector< ColIndex > ColIndexVector</div><div class="ttdef"><b>Definition:</b> <a href="lp__types_8h_source.html#l00308">lp_types.h:308</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1glop_1_1_update_row_html_ae7202d055b6b172a8a1da4f5b136f9ea"><div class="ttname"><a href="classoperations__research_1_1glop_1_1_update_row.html#ae7202d055b6b172a8a1da4f5b136f9ea">operations_research::glop::UpdateRow::SetParameters</a></div><div class="ttdeci">void SetParameters(const GlopParameters &parameters)</div><div class="ttdef"><b>Definition:</b> <a href="update__row_8cc_source.html#l00174">update_row.cc:174</a></div></div>
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<div class="ttc" id="astructoperations__research_1_1glop_1_1_scattered_row_html"><div class="ttname"><a href="structoperations__research_1_1glop_1_1_scattered_row.html">operations_research::glop::ScatteredRow</a></div><div class="ttdef"><b>Definition:</b> <a href="scattered__vector_8h_source.html#l00192">scattered_vector.h:192</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1glop_1_1_update_row_html_a69f5823dcd3e25a2f39ddc339ad58679"><div class="ttname"><a href="classoperations__research_1_1glop_1_1_update_row.html#a69f5823dcd3e25a2f39ddc339ad58679">operations_research::glop::UpdateRow::UpdateRow</a></div><div class="ttdeci">UpdateRow(const CompactSparseMatrix &matrix, const CompactSparseMatrix &transposed_matrix, const VariablesInfo &variables_info, const RowToColMapping &basis, const BasisFactorization &basis_factorization)</div><div class="ttdef"><b>Definition:</b> <a href="update__row_8cc_source.html#l00021">update_row.cc:21</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#l00029">variables_info.h:29</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1glop_1_1_update_row_html_a30fddb9e35865ba28420bd52538a183f"><div class="ttname"><a href="classoperations__research_1_1glop_1_1_update_row.html#a30fddb9e35865ba28420bd52538a183f">operations_research::glop::UpdateRow::GetCoefficients</a></div><div class="ttdeci">const DenseRow & GetCoefficients() const</div><div class="ttdef"><b>Definition:</b> <a href="update__row_8cc_source.html#l00168">update_row.cc:168</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1glop_1_1_update_row_html_a2355c817cae2bbd316f28aea2e842761"><div class="ttname"><a href="classoperations__research_1_1glop_1_1_update_row.html#a2355c817cae2bbd316f28aea2e842761">operations_research::glop::UpdateRow::ComputeAndGetUnitRowLeftInverse</a></div><div class="ttdeci">const ScatteredRow & ComputeAndGetUnitRowLeftInverse(RowIndex leaving_row)</div><div class="ttdef"><b>Definition:</b> <a href="update__row_8cc_source.html#l00056">update_row.cc:56</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1glop_1_1_update_row_html_a0c3551dfd558be8edc0bd8d565cfca30"><div class="ttname"><a href="classoperations__research_1_1glop_1_1_update_row.html#a0c3551dfd558be8edc0bd8d565cfca30">operations_research::glop::UpdateRow::GetUnitRowLeftInverse</a></div><div class="ttdeci">const ScatteredRow & GetUnitRowLeftInverse() const</div><div class="ttdef"><b>Definition:</b> <a href="update__row_8cc_source.html#l00051">update_row.cc:51</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1_double_distribution_html"><div class="ttname"><a href="classoperations__research_1_1_double_distribution.html">operations_research::DoubleDistribution</a></div><div class="ttdef"><b>Definition:</b> <a href="stats_8h_source.html#l00275">stats.h:275</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1glop_1_1_update_row_html_af8e957f1c8389089554ded7bd2b7b45f"><div class="ttname"><a href="classoperations__research_1_1glop_1_1_update_row.html#af8e957f1c8389089554ded7bd2b7b45f">operations_research::glop::UpdateRow::GetNonZeroPositions</a></div><div class="ttdeci">const ColIndexVector & GetNonZeroPositions() const</div><div class="ttdef"><b>Definition:</b> <a href="update__row_8cc_source.html#l00170">update_row.cc:170</a></div></div>
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<div class="ttc" id="aclassoperations__research_1_1glop_1_1_update_row_html_a3e7cad3b8c461fe473b1bd98b6a24156"><div class="ttname"><a href="classoperations__research_1_1glop_1_1_update_row.html#a3e7cad3b8c461fe473b1bd98b6a24156">operations_research::glop::UpdateRow::ComputeUpdateRowForBenchmark</a></div><div class="ttdeci">void ComputeUpdateRowForBenchmark(const DenseRow &lhs, const std::string &algorithm)</div><div class="ttdef"><b>Definition:</b> <a href="update__row_8cc_source.html#l00152">update_row.cc:152</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#l00176">markowitz.cc:176</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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<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="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="ascattered__vector_8h_html"><div class="ttname"><a href="scattered__vector_8h.html">scattered_vector.h</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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