78 lines
5.3 KiB
HTML
78 lines
5.3 KiB
HTML
<!DOCTYPE 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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<head><meta http-equiv="x-ua-compatible" content="ie=edge">
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
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<title>std::discard_block_engine<Engine,P,R>::seed</title>
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<link rel="stylesheet" href="ext.css" />
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<link rel="stylesheet" href="site_modules.css" />
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</head>
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<body class="mediawiki ltr sitedir-ltr ns-0 ns-subject page-cpp_numeric_random_discard_block_engine_seed skin-cppreference2 action-view cpp-page-template cpp-navbar">
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<div id="cpp-content-base">
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<div id="content"><a id="top"></a>
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<h1 id="firstHeading" class="firstHeading"><span style="font-size:0.7em; line-height:130%">std::discard_block_engine<Engine,P,R>::</span>seed</h1>
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<div id="bodyContent">
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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-discard_block_engine.html">discard block engine</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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</div>
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<table class="t-dcl-begin">
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<tbody>
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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="kw4">void</span> seed<span class="br0">(</span><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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<div><span class="mw-geshi cpp source-cpp"><span class="kw4">void</span> seed<span class="br0">(</span> result_type value <span class="br0">)</span><span class="sy4">;</span></span></div>
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</td>
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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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</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> Sseq <span class="sy1">></span><br />
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<span class="kw4">void</span> seed<span class="br0">(</span> Sseq<span class="sy3">&</span> seq <span class="br0">)</span><span class="sy4">;</span></span></div>
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</td>
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<td>(3)</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-sep">
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<td></td>
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<td></td>
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<td></td>
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</tr>
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</tbody>
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</table>
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<p>用新的种子值重初始化底层引擎的内部状态。</p>
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<div class="t-li1"><span class="t-li">1)</span> 以默认种子值播种底层引擎。等效地调用 <span class="t-c"><span class="mw-geshi cpp source-cpp">e.<span class="me1">seed</span><span class="br0">(</span><span class="br0">)</span></span></span> ，其中 <code>e</code> 是底层引擎。</div>
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<div class="t-li1"><span class="t-li">2)</span> 以种子值 <code>s</code> 播种底层引擎。等效地调用 <span class="t-c"><span class="mw-geshi cpp source-cpp">e.<span class="me1">seed</span><span class="br0">(</span>value<span class="br0">)</span></span></span> ，其中 <code>e</code> 是底层引擎。</div>
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<div class="t-li1"><span class="t-li">3)</span> 以种子序列 <code>seq</code> 播种底层引擎。等效地调用 <span class="t-c"><span class="mw-geshi cpp source-cpp">e.<span class="me1">seed</span><span class="br0">(</span>seq<span class="br0">)</span></span></span> ，其中 <code>e</code> 是底层引擎。此模板仅若 <code>Sseq</code> 符合<a href="cpp-named_req-SeedSequence.html"><span style="font-style:italic">种子序列</span> <span style="font-family: Georgia, 'DejaVu Serif', serif; font-style:italic">(SeedSequence)</span></a> 才参与重载决议。特别是若 <code>Sseq</code> 可隐式转换为 <code>result_type</code> 则此模板不参与重载决议。</div>
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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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<tr class="t-par">
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<td>value</td>
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<td>-</td>
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<td>用于初始化底层引擎内部状态的种子值</td>
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</tr>
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<tr class="t-par">
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<td>seq</td>
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<td>-</td>
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<td>用于初始化底层引擎内部状态的种子序列</td>
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</tr>
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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>（无）</p>
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<h3><span class="mw-headline" id=".E5.BC.82.E5.B8.B8">异常</span></h3>
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<p>不抛出。</p>
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</div>
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<div class="visualClear"></div>
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</div>
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</div>
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</div>
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</body>
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</html>
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