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‎reference/random/philox_engine.html‎

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<header data-kunai-mdinfo="{&#34;meta&#34;: {&#34;header&#34;: [&#34;random&#34;], &#34;namespace&#34;: [&#34;std&#34;], &#34;id-type&#34;: [&#34;class template&#34;], &#34;cpp&#34;: [&#34;cpp26&#34;]}, &#34;sources&#34;: [{&#34;id&#34;: &#34;4c843ff20f072fdb9b2d3035d50c8020c19530ad&#34;, &#34;source&#34;: &#34;#include &lt;iostream&gt;\n#include &lt;random&gt;\n\nint main()\n{\n std::random_device seed_gen;\n\n // philox_engine\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u8a2d\u5b9a\u6e08\u307f\u5225\u540d\u3067\u3042\u308bphilox4x32\u3092\u4f7f\u7528\u3059\u308b\u3002\n // \u30e9\u30f3\u30c0\u30e0\u306a\u30b7\u30fc\u30c9\u3092\u4f7f\u7528\u3057\u3066\u521d\u671f\u5316\n std::philox4x32 engine{seed_gen()};\n\n for (int i = 0; i &lt; 10; ++i) {\n // \u4e71\u6570\u3092\u751f\u6210\n std::uint32_t result = engine();\n std::cout &lt;&lt; result &lt;&lt; std::endl;\n }\n}\n&#34;}, {&#34;id&#34;: &#34;901ac7709c2f1194791f2fb0dcb917e5939bd9dd&#34;, &#34;source&#34;: &#34;#include &lt;print&gt;\n#include &lt;random&gt;\n\nstruct Vector {\n float x, y, z;\n};\n\nint main()\n{\n std::uint32_t seed = 12345;\n std::philox4x32 engine;\n\n // 2x2x2\u500b\u306e\u30e9\u30f3\u30c0\u30e0\u306a\u30d9\u30af\u30c8\u30eb\u3092\u751f\u6210\u3059\u308b\n for (std::uint32_t x = 0; x &lt; 2; ++x) {\n for (std::uint32_t y = 0; y &lt; 2; ++y) {\n for (std::uint32_t z = 0; z &lt; 2; ++z) {\n engine.seed(seed);\n engine.set_counter({x, y, z, 0});\n\n std::uniform_real_distribution&lt;float&gt; dist{0, 1.0};\n\n Vector vec {\n dist(engine),\n dist(engine),\n dist(engine)\n };\n std::println(\&#34;{},{},{}\&#34;, vec.x, vec.y, vec.z);\n }\n }\n }\n}\n&#34;}], &#34;page_id&#34;: [&#34;reference&#34;, &#34;random&#34;, &#34;philox_engine&#34;]}">
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<header data-kunai-mdinfo="{&#34;meta&#34;: {&#34;header&#34;: [&#34;random&#34;], &#34;namespace&#34;: [&#34;std&#34;], &#34;id-type&#34;: [&#34;class template&#34;], &#34;cpp&#34;: [&#34;cpp26&#34;]}, &#34;sources&#34;: [{&#34;id&#34;: &#34;4c843ff20f072fdb9b2d3035d50c8020c19530ad&#34;, &#34;source&#34;: &#34;#include &lt;iostream&gt;\n#include &lt;random&gt;\n\nint main()\n{\n std::random_device seed_gen;\n\n // philox_engine\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u8a2d\u5b9a\u6e08\u307f\u5225\u540d\u3067\u3042\u308bphilox4x32\u3092\u4f7f\u7528\u3059\u308b\u3002\n // \u30e9\u30f3\u30c0\u30e0\u306a\u30b7\u30fc\u30c9\u3092\u4f7f\u7528\u3057\u3066\u521d\u671f\u5316\n std::philox4x32 engine{seed_gen()};\n\n for (int i = 0; i &lt; 10; ++i) {\n // \u4e71\u6570\u3092\u751f\u6210\n std::uint32_t result = engine();\n std::cout &lt;&lt; result &lt;&lt; std::endl;\n }\n}\n&#34;}, {&#34;id&#34;: &#34;d6955fb49fc2bd213a2e67d8003c5b71e9e76aa4&#34;, &#34;source&#34;: &#34;#include &lt;print&gt;\n#include &lt;random&gt;\n\nstruct Vector {\n float x, y, z;\n};\n\nint main()\n{\n std::uint32_t seed = 12345;\n\n // 2x2x2\u500b\u306e\u30e9\u30f3\u30c0\u30e0\u306a\u30d9\u30af\u30c8\u30eb\u3092\u751f\u6210\u3059\u308b\n for (std::uint32_t x = 0; x &lt; 2; ++x) {\n for (std::uint32_t y = 0; y &lt; 2; ++y) {\n for (std::uint32_t z = 0; z &lt; 2; ++z) {\n std::philox4x32 engine{seed};\n engine.set_counter({x, y, z, 0});\n\n std::uniform_real_distribution&lt;float&gt; dist{0, 1.0};\n\n Vector vec {\n dist(engine),\n dist(engine),\n dist(engine)\n };\n std::println(\&#34;{},{},{}\&#34;, vec.x, vec.y, vec.z);\n }\n }\n }\n}\n&#34;}], &#34;page_id&#34;: [&#34;reference&#34;, &#34;random&#34;, &#34;philox_engine&#34;]}">
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<nav class="navbar navbar-default" role="navigation">
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<div class="container-fluid">
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<div class="navbar-header">
@@ -204,8 +204,8 @@
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<p class="text-right"><small>
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最終更新日時(UTC):
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<span itemprop="datePublished" content="2024-12-19T13:00:57">
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2024年12月19日 13時00分57秒
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<span itemprop="datePublished" content="2024-12-19T13:18:14">
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2024年12月19日 13時18分14秒
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</span>
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<br/>
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<span itemprop="author" itemscope itemtype="http://schema.org/Person">
@@ -646,7 +646,7 @@ <h4>出力例</h4>
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</code></pre></p>
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<h3>多次元の乱数を生成する例</h3>
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<p><div class="yata" id="901ac7709c2f1194791f2fb0dcb917e5939bd9dd"><div class="codehilite"><pre><span></span><code><span class="cp">#include</span> <span class="cpf"><a href="../print.html">&lt;print&gt;</a></span><span class="cp"></span>
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<p><div class="yata" id="d6955fb49fc2bd213a2e67d8003c5b71e9e76aa4"><div class="codehilite"><pre><span></span><code><span class="cp">#include</span> <span class="cpf"><a href="../print.html">&lt;print&gt;</a></span><span class="cp"></span>
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<span class="cp">#include</span> <span class="cpf"><a href="../random.html">&lt;random&gt;</a></span><span class="cp"></span>
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<span class="k">struct</span> <span class="n">Vector</span> <span class="p">{</span>
@@ -656,13 +656,12 @@ <h3>多次元の乱数を生成する例</h3>
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<span class="kt">int</span> <span class="nf">main</span><span class="p">()</span>
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<span class="p">{</span>
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<span class="n"><a href="../cstdint/uint32_t.html">std::uint32_t</a></span> <span class="n">seed</span> <span class="o">=</span> <span class="mi">12345</span><span class="p">;</span>
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<span class="n"><a href="philox4x32.html">std::philox4x32</a></span> <span class="n">engine</span><span class="p">;</span>
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<span class="c1">// 2x2x2個のランダムなベクトルを生成する</span>
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<span class="k">for</span> <span class="p">(</span><span class="n"><a href="../cstdint/uint32_t.html">std::uint32_t</a></span> <span class="n">x</span> <span class="o">=</span> <span class="mi">0</span><span class="p">;</span> <span class="n">x</span> <span class="o">&lt;</span> <span class="mi">2</span><span class="p">;</span> <span class="o">++</span><span class="n">x</span><span class="p">)</span> <span class="p">{</span>
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<span class="k">for</span> <span class="p">(</span><span class="n"><a href="../cstdint/uint32_t.html">std::uint32_t</a></span> <span class="n">y</span> <span class="o">=</span> <span class="mi">0</span><span class="p">;</span> <span class="n">y</span> <span class="o">&lt;</span> <span class="mi">2</span><span class="p">;</span> <span class="o">++</span><span class="n">y</span><span class="p">)</span> <span class="p">{</span>
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<span class="k">for</span> <span class="p">(</span><span class="n"><a href="../cstdint/uint32_t.html">std::uint32_t</a></span> <span class="n">z</span> <span class="o">=</span> <span class="mi">0</span><span class="p">;</span> <span class="n">z</span> <span class="o">&lt;</span> <span class="mi">2</span><span class="p">;</span> <span class="o">++</span><span class="n">z</span><span class="p">)</span> <span class="p">{</span>
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<span class="n"><a href="philox_engine/seed.html">engine.seed</a></span><span class="p">(</span><span class="n">seed</span><span class="p">);</span>
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<span class="n"><a href="philox4x32.html">std::philox4x32</a></span> <span class="n">engine</span><span class="p">{</span><span class="n">seed</span><span class="p">};</span>
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<span class="n"><a href="philox_engine/set_counter.html">engine.set_counter</a></span><span class="p">({</span><span class="n">x</span><span class="p">,</span> <span class="n">y</span><span class="p">,</span> <span class="n">z</span><span class="p">,</span> <span class="mi">0</span><span class="p">});</span>
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<span class="n">std</span><span class="o">::</span><span class="n"><a href="uniform_real_distribution.html">uniform_real_distribution</a></span><span class="o">&lt;</span><span class="kt">float</span><span class="o">&gt;</span> <span class="n">dist</span><span class="p">{</span><span class="mi">0</span><span class="p">,</span> <span class="mf">1.0</span><span class="p">};</span>

‎rss.xml‎

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@@ -2,10 +2,51 @@
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<feed xmlns="http://www.w3.org/2005/Atom">
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<title>cpprefjp - C++日本語リファレンス</title>
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<link href="https://cpprefjp.github.io" />
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<updated>2024-12-19T13:16:29.640696</updated>
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<id>8be6638d-efe7-4484-9e22-9bd6be953073</id>
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<updated>2024-12-19T13:21:18.944893</updated>
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<id>62ec3ac5-d4f4-4aa8-a73e-1d3f29198a2b</id>
77

88

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<entry>
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<title>philox_engine -- philox_engineのサンプル : ループ内でオブジェクトを作るよう修正</title>
11+
<link href="https://cpprefjp.github.io/reference/random/philox_engine.html"/>
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<id>000cd8fb45da8eb4f823102d56ae6fa10b67f2ab:reference/random/philox_engine.md</id>
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<updated>2024-12-19T22:18:14+09:00</updated>
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<summary type="html">&lt;pre&gt;&lt;code&gt;diff --git a/reference/random/philox_engine.md b/reference/random/philox_engine.md
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index 4a60b07dc..4fa2ae4b5 100644
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--- a/reference/random/philox_engine.md
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+++ b/reference/random/philox_engine.md
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@@ -213,13 +213,12 @@ struct Vector {
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int main()
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{
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std::uint32_t seed = 12345;
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- std::philox4x32 engine;
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// 2x2x2個のランダムなベクトルを生成する
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for (std::uint32_t x = 0; x &amp;lt; 2; ++x) {
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for (std::uint32_t y = 0; y &amp;lt; 2; ++y) {
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for (std::uint32_t z = 0; z &amp;lt; 2; ++z) {
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- engine.seed(seed);
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+ std::philox4x32 engine{seed};
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engine.set_counter({x, y, z, 0});
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std::uniform_real_distribution&amp;lt;float&amp;gt; dist{0, 1.0};
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@@ -236,7 +235,6 @@ int main()
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}
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```
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* std::philox4x32[link philox4x32.md]
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-* engine.seed[link philox_engine/seed.md]
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* engine.set_counter[link philox_engine/set_counter.md]
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* uniform_real_distribution[link /reference/random/uniform_real_distribution.md]
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* std::uint32_t[link /reference/cstdint/uint32_t.md]
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&lt;/code&gt;&lt;/pre&gt;</summary>
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<author>
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<name>Akira Takahashi</name>
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<email>[email protected]</email>
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</author>
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</entry>
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<entry>
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<title>set_counter -- philox_engine::set_counter : シード値を状態として保持してないことを記載</title>
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<link href="https://cpprefjp.github.io/reference/random/philox_engine/set_counter.html"/>
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</author>
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</entry>
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<entry>
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<title>philox_engine -- コメント修正忘れ</title>
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<link href="https://cpprefjp.github.io/reference/random/philox_engine.html"/>
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<id>7b0c554ae195c2b40a7680451443ecdd83ec4825:reference/random/philox_engine.md</id>
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<updated>2024-12-19T22:00:57+09:00</updated>
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<summary type="html">&lt;pre&gt;&lt;code&gt;diff --git a/reference/random/philox_engine.md b/reference/random/philox_engine.md
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index 902f2cc4c..4a60b07dc 100644
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--- a/reference/random/philox_engine.md
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+++ b/reference/random/philox_engine.md
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@@ -215,7 +215,7 @@ int main()
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std::uint32_t seed = 12345;
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std::philox4x32 engine;
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- // 4x4x4個のランダムなベクトルを生成する
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+ // 2x2x2個のランダムなベクトルを生成する
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for (std::uint32_t x = 0; x &amp;lt; 2; ++x) {
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for (std::uint32_t y = 0; y &amp;lt; 2; ++y) {
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for (std::uint32_t z = 0; z &amp;lt; 2; ++z) {
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&lt;/code&gt;&lt;/pre&gt;</summary>
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<author>
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<name>Akira Takahashi</name>
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<email>[email protected]</email>
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</author>
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</entry>
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</feed>

‎sitemap.xml‎

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<loc>https://cpprefjp.github.io/reference/random/philox_engine.html</loc>
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<lastmod>2024-12-19T22:00:57+09:00</lastmod>
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<changefreq>daily</changefreq>
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