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reference/chrono/make24.html

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@@ -263,7 +263,7 @@ <h2>例</h2>
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<span class="w"> </span><span class="n"><a href="../cassert/assert.html">assert</a></span><span class="p">(</span><span class="n"><span style="color:#ff0000">chrono::make24</span></span><span class="p">(</span><span class="n"><a href="duration/op_h.html">12h</a></span><span class="p">,</span><span class="w"> </span><span class="nb">false</span><span class="p">)</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="n"><a href="duration/op_h.html">0h</a></span><span class="p">);</span>
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<span class="w"> </span><span class="n"><a href="../cassert/assert.html">assert</a></span><span class="p">(</span><span class="n"><span style="color:#ff0000">chrono::make24</span></span><span class="p">(</span><span class="n"><a href="duration/op_h.html">12h</a></span><span class="p">,</span><span class="w"> </span><span class="nb">true</span><span class="p">)</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="n"><a href="duration/op_h.html">12h</a></span><span class="p">);</span>
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<span class="w"> </span><span class="n"><a href="../cassert/assert.html">assert</a></span><span class="p">(</span><span class="n"><span style="color:#ff0000">chrono::make24</span></span><span class="p">(</span><span class="n"><a href="duration/op_h.html">1h</a></span><span class="p">,</span><span class="w"> </span><span class="nb">true</span><span class="p">)</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="mi">1U</span><span class="n">oDxtEQHrDOTtSPXfBSRcWjAXFWNYhUF</span><span class="p">);</span>
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<span class="w"> </span><span class="n"><a href="../cassert/assert.html">assert</a></span><span class="p">(</span><span class="n"><span style="color:#ff0000">chrono::make24</span></span><span class="p">(</span><span class="n"><a href="duration/op_h.html">1h</a></span><span class="p">,</span><span class="w"> </span><span class="nb">true</span><span class="p">)</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="mi">1</span><span class="n"><a href="duration/op_h.html">3h</a></span><span class="p">);</span>
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<span class="w"> </span><span class="n"><a href="../cassert/assert.html">assert</a></span><span class="p">(</span><span class="n"><span style="color:#ff0000">chrono::make24</span></span><span class="p">(</span><span class="n"><a href="duration/op_h.html">3h</a></span><span class="p">,</span><span class="w"> </span><span class="nb">true</span><span class="p">)</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="n"><a href="duration/op_h.html">15h</a></span><span class="p">);</span>
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<span class="w"> </span><span class="n"><a href="../cassert/assert.html">assert</a></span><span class="p">(</span><span class="n"><span style="color:#ff0000">chrono::make24</span></span><span class="p">(</span><span class="n"><a href="duration/op_h.html">11h</a></span><span class="p">,</span><span class="w"> </span><span class="nb">true</span><span class="p">)</span><span class="w"> </span><span class="o">==</span><span class="w"> </span><span class="n"><a href="duration/op_h.html">23h</a></span><span class="p">);</span>
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<span class="p">}</span>

reference/random/mersenne_twister_engine.html

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<p class="text-right"><small>
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最終更新日時:
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<time itemprop="datePublished" class="js-local-time"
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datetime="2026-08-27T10:58:56+09:00">
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2026年08月27日 10時58分56秒 (JST)
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datetime="2026-08-31T11:40:01+09:00">
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2026年08月31日 11時40分01秒 (JST)
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</time>
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<br/>
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<span itemprop="author" itemscope itemtype="http://schema.org/Person">
@@ -545,7 +545,7 @@ <h3>処理系</h3>
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</ul>
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<h2>参照</h2>
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<ul>
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<li><a href="http://www.math.sci.hiroshima-u.ac.jp/~m-mat/MT/mt.html" target="_blank">Mersenne Twister Home Page</a></li>
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<li><a href="https://www.math.sci.hiroshima-u.ac.jp/m-mat/MT/mt.html" target="_blank">Mersenne Twister Home Page</a></li>
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<li><a href="https://ja.wikipedia.org/wiki/メルセンヌ・ツイスタ" target="_blank">メルセンヌ・ツイスタ - Wikipedia</a></li>
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<li>GCC(libstdc++) 4.8以降では、<code>&lt;ext/random&gt;</code>ヘッダに、SSE最適化されたメルセンヌ・ツイスターである<code>simd_fast_mersenne_twister_engine</code>クラスが実装されている</li>
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<li><a href="https://cplusplus.github.io/LWG/issue1437" target="_blank">LWG Issue 1437. Mersenne twister meaningless for word sizes less than two</a><ul>

reference/random/seed_seq/generate.html

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<p class="text-right"><small>
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最終更新日時:
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<time itemprop="datePublished" class="js-local-time"
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datetime="2026-07-22T13:44:46+09:00">
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2026年07月22日 13時44分46秒 (JST)
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datetime="2026-08-31T11:40:01+09:00">
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2026年08月31日 11時40分01秒 (JST)
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</time>
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<br/>
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<span itemprop="author" itemscope itemtype="http://schema.org/Person">
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<span itemprop="name">rotarymars</span>
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<span itemprop="name">Akira Takahashi</span>
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</span>
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が更新
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</small></p>
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<code>seed_seq</code>のコンストラクタで渡されたシード列を元に、32ビット整数の範囲内で偏りがないようにシード値を分布させる。 </p>
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<h2><a class="cpprefjp-defined-word" data-desc="関数呼び出し式の評価結果となるオブジェクト・値">戻り値</a></h2>
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<p>以下のアルゴリズムで、シード列の値を分布させる。<br />
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このアルゴリズムは、メルセンヌ・ツイスター法を考案した松本眞氏と西村拓士氏によるシーケンス初期化を、斎藤睦夫氏が改善したものである( 参照:『<a href="http://www.math.sci.hiroshima-u.ac.jp/~m-mat/MT/SFMT/M062821.pdf" target="_blank">An Application of Finite Field: Design and Implementation of 128-bit Instruction-Based Fast Pseudorandom Number Generator</a>』 )。</p>
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このアルゴリズムは、メルセンヌ・ツイスター法を考案した松本眞氏と西村拓士氏によるシーケンス初期化を、斎藤睦夫氏が改善したものである( 参照:『<a href="https://www.math.sci.hiroshima-u.ac.jp/m-mat/MT/SFMT/M062821.pdf" target="_blank">An Application of Finite Field: Design and Implementation of 128-bit Instruction-Based Fast Pseudorandom Number Generator</a>』 )。</p>
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<ul>
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<li><code>begin == end</code>(すなわち生成対象のシード列が空であるなら)何もしない。そうでなければ、</li>
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<li>出力範囲の各要素を、値<code>0x8b8b8b8b</code>で埋める。</li>

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