78 lines
4.5 KiB
HTML
78 lines
4.5 KiB
HTML
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<html lang="zh" dir="ltr" class="client-nojs" xmlns="http://www.w3.org/1999/xhtml" xml:lang="zh">
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<title>std::lognormal_distribution<RealType>::operator()</title>
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<body class="mediawiki ltr sitedir-ltr ns-0 ns-subject page-cpp_numeric_random_lognormal_distribution_operator skin-cppreference2 action-view cpp-page-template cpp-navbar">
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<h1 id="firstHeading" class="firstHeading"><span style="font-size:0.7em; line-height:130%">std::lognormal_distribution<RealType>::</span>operator()</h1>
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<div id="contentSub"><span class="subpages">< <a href="cpp.html">cpp</a>‎ | <a href="cpp-numeric.html">numeric</a>‎ | <a href="cpp-numeric-random.html">random</a>‎ | <a href="cpp-numeric-random-lognormal_distribution.html">lognormal distribution</a></span></div>
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<div id="mw-content-text" lang="zh" dir="ltr" class="mw-content-ltr" xml:lang="zh">
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<div class="t-page-template" style="">
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<p></p>
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<table class="t-dcl-begin">
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<tr class="t-dcl t-since-cxx11">
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<div><span class="mw-geshi cpp source-cpp"><span class="kw1">template</span><span class="sy1"><</span> <span class="kw1">class</span> Generator <span class="sy1">></span><br />
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result_type operator<span class="br0">(</span><span class="br0">)</span><span class="br0">(</span> Generator<span class="sy3">&</span> g <span class="br0">)</span><span class="sy4">;</span></span></div>
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</td>
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<td>(1)</td>
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<td><span class="t-mark-rev t-since-cxx11">(C++11 起)</span></td>
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</tr>
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<tr class="t-dcl t-since-cxx11">
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<td>
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<div><span class="mw-geshi cpp source-cpp"><span class="kw1">template</span><span class="sy1"><</span> <span class="kw1">class</span> Generator <span class="sy1">></span><br />
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result_type operator<span class="br0">(</span><span class="br0">)</span><span class="br0">(</span> Generator<span class="sy3">&</span> g, <span class="kw4">const</span> param_type<span class="sy3">&</span> params <span class="br0">)</span><span class="sy4">;</span></span></div>
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<td>(2)</td>
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<td><span class="t-mark-rev t-since-cxx11">(C++11 起)</span></td>
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<p>根据关联的概率分布函数生成随机数。由调用 <span class="t-c"><span class="mw-geshi cpp source-cpp">g.<span class="me1">operator</span><span class="br0">(</span><span class="br0">)</span></span></span> 获得熵。</p>
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<p>第一版本使用关联的参数集，第二版本用 <code>params</code> 。不修改关联参数集。</p>
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<h3><span class="mw-headline" id=".E5.8F.82.E6.95.B0">参数</span></h3>
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<table class="t-par-begin">
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<td>g</td>
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<td>-</td>
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<td>均匀随机位生成器对象</td>
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</tr>
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<tr class="t-par">
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<td>params</td>
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<td>-</td>
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<td>用于替代被关联者的分布参数集</td>
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<tr class="t-par-hitem">
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<td colspan="3">类型要求</td>
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<tr class="t-par-req">
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<td colspan="3">-
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<div class="spacer"></div>
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<code>Generator</code> 必须满足<a href="cpp-named_req-UniformRandomBitGenerator.html"><span style="font-style:italic">均匀随机位生成器</span> <span style="font-family: Georgia, 'DejaVu Serif', serif; font-style:italic">(UniformRandomBitGenerator)</span></a> 的要求。</td>
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</table>
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<h3><span class="mw-headline" id=".E8.BF.94.E5.9B.9E.E5.80.BC">返回值</span></h3>
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<p>生成的随机数。</p>
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<h3><span class="mw-headline" id=".E5.A4.8D.E6.9D.82.E5.BA.A6">复杂度</span></h3>
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<p>均摊常数次调用 <span class="t-c"><span class="mw-geshi cpp source-cpp">g.<span class="me1">operator</span><span class="br0">(</span><span class="br0">)</span></span></span> 。</p>
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