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<h1 id="firstHeading" class="firstHeading"><span style="font-size:0.7em; line-height:130%">std::</span>lcm</h1>
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<div id="contentSub"><span class="subpages">&lt; <a href="cpp.html">cpp</a>&lrm; | <a href="cpp-numeric.html">numeric</a></span></div>
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<div>&#23450;&#20041;&#20110;&#22836;&#25991;&#20214; <code><a href="cpp-header-numeric.html">&lt;numeric&gt;</a></code></div>
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<div><span class="mw-geshi cpp source-cpp"><span class="kw1">template</span><span class="sy1">&lt;</span> <span class="kw1">class</span> M, <span class="kw1">class</span> N<span class="sy1">&gt;</span><br />
<span class="kw4">constexpr</span> <a href="cpp-types-common_type.html"><span class="kw636">std::<span class="me2">common_type_t</span></span></a><span class="sy1">&lt;</span>M, N<span class="sy1">&gt;</span> lcm<span class="br0">(</span>M m, N n<span class="br0">)</span><span class="sy4">;</span></span></div>
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<td><span class="t-mark-rev t-since-cxx17">(C++17 &#36215;)</span></td>
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<p>&#35745;&#31639;&#25972;&#25968; <code>m</code> &#19982; <code>n</code> &#30340;&#26368;&#23567;&#20844;&#20493;&#25968;&#12290;</p>
<h3><span class="mw-headline" id=".E5.8F.82.E6.95.B0">&#21442;&#25968;</span></h3>
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<td>m, n</td>
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<h3><span class="mw-headline" id=".E8.BF.94.E5.9B.9E.E5.80.BC">&#36820;&#22238;&#20540;</span></h3>
<p>&#33509; <code>m</code> &#25110; <code>n</code> &#20026;&#38646;&#65292;&#21017;&#36820;&#22238;&#38646;&#12290;&#21542;&#21017;&#65292;&#36820;&#22238; <code>|m|</code> &#19982; <code>|n|</code> &#30340;&#26368;&#23567;&#20844;&#20493;&#25968;&#12290;</p>
<h3><span class="mw-headline" id=".E6.B3.A8.E6.84.8F">&#27880;&#24847;</span></h3>
<p>&#33509; <code>M</code> &#25110; <code>N</code> &#19981;&#26159;&#25972;&#25968;&#31867;&#22411;&#65292;&#25110;&#20854;&#20013;&#26377;&#65288;&#21487;&#20026; cv &#38480;&#23450;&#30340;&#65289; <span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="kw4">bool</span></span></span> &#65292;&#21017;&#31243;&#24207;&#20026;&#30149;&#24335;&#12290;</p>
<p>&#33509; <code>|m|</code> &#12289; <code>|n|</code> &#25110; <code>|m|</code> &#21644; <code>|n|</code> &#30340;&#26368;&#23567;&#20844;&#20493;&#25968;&#19981;&#33021;&#34920;&#31034;&#20026; <span class="t-c"><span class="mw-geshi cpp source-cpp"><a href="cpp-types-common_type.html"><span class="kw636">std::<span class="me2">common_type_t</span></span></a><span class="sy1">&lt;</span>M, N<span class="sy1">&gt;</span></span></span> &#31867;&#22411;&#30340;&#20540;&#65292;&#21017;&#34892;&#20026;&#26410;&#23450;&#20041;&#12290;</p>
<h3><span class="mw-headline" id=".E5.BC.82.E5.B8.B8">&#24322;&#24120;</span></h3>
<p>&#19981;&#25243;&#24322;&#24120;&#12290;</p>
<h3><span class="mw-headline" id=".E5.8F.82.E9.98.85">&#21442;&#38405;</span></h3>
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<div><a href="cpp-numeric-gcd.html"><span class="t-lines"><span>gcd</span></span></a></div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx17">(C++17)</span></span></span></div>
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<td>&#36820;&#22238;&#20108;&#20010;&#25972;&#25968;&#26368;&#22823;&#20844;&#32422;&#25968;&#30340; <code>constexpr</code> &#20989;&#25968;&#27169;&#26495;<br />
<span class="t-mark">(&#20989;&#25968;&#27169;&#26495;)</span></td>
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