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<div class="headertitle"><div class="title">numeric</div></div>
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<div class="fragment"><div class="line"><a id="l00001" name="l00001"></a><span class="lineno"> 1</span><span class="comment">// vi:set ft=cpp: -*- Mode: C++ -*-</span></div>
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<div class="line"><a id="l00002" name="l00002"></a><span class="lineno"> 2</span><span class="comment">/*</span></div>
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<div class="line"><a id="l00003" name="l00003"></a><span class="lineno"> 3</span><span class="comment"> * Copyright (C) 2025 Kernkonzept GmbH.</span></div>
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<div class="line"><a id="l00004" name="l00004"></a><span class="lineno"> 4</span><span class="comment"> * Author(s): Martin Decky <martin.decky@kernkonzept.com></span></div>
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<div class="line"><a id="l00005" name="l00005"></a><span class="lineno"> 5</span><span class="comment"> *</span></div>
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<div class="line"><a id="l00006" name="l00006"></a><span class="lineno"> 6</span><span class="comment"> * License: see LICENSE.spdx (in this directory or the directories above)</span></div>
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<div class="line"><a id="l00007" name="l00007"></a><span class="lineno"> 7</span><span class="comment"> */</span></div>
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<div class="line"><a id="l00008" name="l00008"></a><span class="lineno"> 8</span> </div>
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<div class="line"><a id="l00009" name="l00009"></a><span class="lineno"> 9</span><span class="preprocessor">#pragma once</span></div>
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<div class="line"><a id="l00010" name="l00010"></a><span class="lineno"> 10</span> </div>
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<div class="line"><a id="l00011" name="l00011"></a><span class="lineno"> 11</span><span class="preprocessor">#include <l4/cxx/type_traits></span></div>
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<div class="line"><a id="l00012" name="l00012"></a><span class="lineno"> 12</span> </div>
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<div class="line"><a id="l00013" name="l00013"></a><span class="lineno"> 13</span><span class="keyword">namespace </span><a class="code hl_namespace" href="namespacecxx.html">cxx</a> {</div>
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<div class="line"><a id="l00014" name="l00014"></a><span class="lineno"> 14</span></div>
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<div class="line"><a id="l00033" name="l00033"></a><span class="lineno"> 33</span><span class="keyword">template</span> <<span class="keyword">typename</span> T></div>
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<div class="foldopen" id="foldopen00034" data-start="{" data-end="}">
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<div class="line"><a id="l00034" name="l00034"></a><span class="lineno"><a class="line" href="namespacecxx.html#aa775ceed3c83b808b525bc72df2dd50f"> 34</a></span><span class="keyword">constexpr</span> T <a class="code hl_function" href="namespacecxx.html#aa775ceed3c83b808b525bc72df2dd50f">gcd</a>(T a, T b)</div>
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<div class="line"><a id="l00035" name="l00035"></a><span class="lineno"> 35</span>{</div>
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<div class="line"><a id="l00036" name="l00036"></a><span class="lineno"> 36</span> <span class="keyword">static_assert</span>(Type_traits<T>::is_unsigned, <span class="stringliteral">"Type must be unsigned"</span>);</div>
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<div class="line"><a id="l00037" name="l00037"></a><span class="lineno"> 37</span> </div>
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<div class="line"><a id="l00038" name="l00038"></a><span class="lineno"> 38</span> <span class="keywordflow">while</span> (b != 0)</div>
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<div class="line"><a id="l00039" name="l00039"></a><span class="lineno"> 39</span> {</div>
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<div class="line"><a id="l00040" name="l00040"></a><span class="lineno"> 40</span> T remainder = a % b;</div>
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<div class="line"><a id="l00041" name="l00041"></a><span class="lineno"> 41</span> a = b;</div>
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<div class="line"><a id="l00042" name="l00042"></a><span class="lineno"> 42</span> b = remainder;</div>
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<div class="line"><a id="l00043" name="l00043"></a><span class="lineno"> 43</span> }</div>
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<div class="line"><a id="l00044" name="l00044"></a><span class="lineno"> 44</span> </div>
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<div class="line"><a id="l00045" name="l00045"></a><span class="lineno"> 45</span> <span class="keywordflow">return</span> a;</div>
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<div class="line"><a id="l00046" name="l00046"></a><span class="lineno"> 46</span>}</div>
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</div>
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<div class="line"><a id="l00047" name="l00047"></a><span class="lineno"> 47</span></div>
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<div class="line"><a id="l00067" name="l00067"></a><span class="lineno"> 67</span><span class="keyword">template</span> <<span class="keyword">typename</span> T></div>
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<div class="foldopen" id="foldopen00068" data-start="{" data-end="}">
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<div class="line"><a id="l00068" name="l00068"></a><span class="lineno"><a class="line" href="namespacecxx.html#adc794acbc320e2e285f648904f5d37b0"> 68</a></span><span class="keyword">constexpr</span> T <a class="code hl_function" href="namespacecxx.html#adc794acbc320e2e285f648904f5d37b0">lcm</a>(T a, T b)</div>
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<div class="line"><a id="l00069" name="l00069"></a><span class="lineno"> 69</span>{</div>
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<div class="line"><a id="l00070" name="l00070"></a><span class="lineno"> 70</span> <span class="keyword">static_assert</span>(Type_traits<T>::is_unsigned, <span class="stringliteral">"Type must be unsigned"</span>);</div>
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<div class="line"><a id="l00071" name="l00071"></a><span class="lineno"> 71</span> </div>
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<div class="line"><a id="l00072" name="l00072"></a><span class="lineno"> 72</span> <span class="keywordflow">if</span> (a == 0 || b == 0)</div>
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<div class="line"><a id="l00073" name="l00073"></a><span class="lineno"> 73</span> <span class="keywordflow">return</span> 0;</div>
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<div class="line"><a id="l00074" name="l00074"></a><span class="lineno"> 74</span> </div>
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<div class="line"><a id="l00075" name="l00075"></a><span class="lineno"> 75</span> <span class="keywordflow">return</span> (a / <a class="code hl_function" href="namespacecxx.html#aa775ceed3c83b808b525bc72df2dd50f">gcd</a>(a, b)) * b;</div>
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<div class="line"><a id="l00076" name="l00076"></a><span class="lineno"> 76</span>}</div>
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</div>
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<div class="line"><a id="l00077" name="l00077"></a><span class="lineno"> 77</span> </div>
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<div class="line"><a id="l00078" name="l00078"></a><span class="lineno"> 78</span>}</div>
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<div class="ttc" id="anamespacecxx_html"><div class="ttname"><a href="namespacecxx.html">cxx</a></div><div class="ttdoc">Our C++ library.</div><div class="ttdef"><b>Definition</b> <a href="arith_source.html#l00011">arith:11</a></div></div>
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<div class="ttc" id="anamespacecxx_html_aa775ceed3c83b808b525bc72df2dd50f"><div class="ttname"><a href="namespacecxx.html#aa775ceed3c83b808b525bc72df2dd50f">cxx::gcd</a></div><div class="ttdeci">constexpr T gcd(T a, T b)</div><div class="ttdoc">Compute the greatest common divisor of two unsigned values.</div><div class="ttdef"><b>Definition</b> <a href="#l00034">numeric:34</a></div></div>
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<div class="ttc" id="anamespacecxx_html_adc794acbc320e2e285f648904f5d37b0"><div class="ttname"><a href="namespacecxx.html#adc794acbc320e2e285f648904f5d37b0">cxx::lcm</a></div><div class="ttdeci">constexpr T lcm(T a, T b)</div><div class="ttdoc">Compute the least common multiple of two unsigned values.</div><div class="ttdef"><b>Definition</b> <a href="#l00068">numeric:68</a></div></div>
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<li class="navelem"><b>l4</b></li><li class="navelem"><b>cxx</b></li><li class="navelem"><b>numeric</b></li>
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<li class="footer">Generated on <span class="timestamp"></span> for L4Re Operating System Framework by <a href="https://www.doxygen.org/index.html"><img class="footer" src="doxygen.svg" width="104" height="31" alt="doxygen"/></a> 1.15.0 </li>
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