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97 lines
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<li><a href="../java/namespacecom_1_1google_1_1ortools_1_1sat.html">CP-SAT</a></li>
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<div class="title">Difference.java</div> </div>
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<a href="Difference_8java.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><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><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><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><div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment">//</span></div><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><div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment">//</span></div><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><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><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><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><div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment">// limitations under the License.</span></div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span> </div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="keyword">package </span>com.google.ortools.sat;</div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span> </div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="keyword">final</span> <span class="keyword">class </span>Difference <span class="keyword">implements</span> LinearExpr {</div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span>  <span class="keyword">private</span> <span class="keyword">final</span> LinearExpr left;</div><div class="line"><a name="l00019"></a><span class="lineno"> 19</span>  <span class="keyword">private</span> <span class="keyword">final</span> LinearExpr right;</div><div class="line"><a name="l00020"></a><span class="lineno"> 20</span> </div><div class="line"><a name="l00021"></a><span class="lineno"> 21</span>  <span class="keyword">public</span> Difference(LinearExpr left, LinearExpr right) {</div><div class="line"><a name="l00022"></a><span class="lineno"> 22</span>  this.left = left;</div><div class="line"><a name="l00023"></a><span class="lineno"> 23</span>  this.right = right;</div><div class="line"><a name="l00024"></a><span class="lineno"> 24</span>  }</div><div class="line"><a name="l00025"></a><span class="lineno"> 25</span> </div><div class="line"><a name="l00026"></a><span class="lineno"> 26</span>  @Override</div><div class="line"><a name="l00027"></a><span class="lineno"> 27</span>  <span class="keyword">public</span> <span class="keywordtype">int</span> numElements() {</div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span>  <span class="keywordflow">return</span> left.numElements() + right.numElements();</div><div class="line"><a name="l00029"></a><span class="lineno"> 29</span>  }</div><div class="line"><a name="l00030"></a><span class="lineno"> 30</span> </div><div class="line"><a name="l00031"></a><span class="lineno"> 31</span>  @Override</div><div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  <span class="keyword">public</span> IntVar getVariable(<span class="keywordtype">int</span> index) {</div><div class="line"><a name="l00033"></a><span class="lineno"> 33</span>  <span class="keywordflow">if</span> (index < left.numElements()) {</div><div class="line"><a name="l00034"></a><span class="lineno"> 34</span>  <span class="keywordflow">return</span> left.getVariable(index);</div><div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  } <span class="keywordflow">else</span> {</div><div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  <span class="keywordflow">return</span> right.getVariable(index - left.numElements());</div><div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  }</div><div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  }</div><div class="line"><a name="l00039"></a><span class="lineno"> 39</span> </div><div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  @Override</div><div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  <span class="keyword">public</span> <span class="keywordtype">long</span> getCoefficient(<span class="keywordtype">int</span> index) {</div><div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  <span class="keywordflow">if</span> (index < left.numElements()) {</div><div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  <span class="keywordflow">return</span> left.getCoefficient(index);</div><div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  } <span class="keywordflow">else</span> {</div><div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  <span class="keywordflow">return</span> -right.getCoefficient(index - left.numElements());</div><div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  }</div><div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  }</div><div class="line"><a name="l00048"></a><span class="lineno"> 48</span> </div><div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  @Override</div><div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  <span class="keyword">public</span> <span class="keywordtype">long</span> getOffset() {</div><div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  <span class="keywordflow">return</span> left.getOffset() - right.getOffset();</div><div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  }</div><div class="line"><a name="l00053"></a><span class="lineno"> 53</span> }</div></div><!-- fragment --></div><!-- contents -->
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