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<li class="navelem"><a class="el" href="dir_d44c64559bbebec7f509842c48db8b23.html">include</a></li><li class="navelem"><a class="el" href="dir_0103a8ad82dcc2c51f5cde661b4b5cb7.html">xrpl</a></li><li class="navelem"><a class="el" href="dir_31b47b71b675f5c4d1b67be42516b2a9.html">beast</a></li><li class="navelem"><a class="el" href="dir_252ea425b8516b0628e052e5ec460ff2.html">utility</a></li> </ul>
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<div class="fragment"><div class="line"><a id="l00001" name="l00001"></a><span class="lineno"> 1</span><span class="preprocessor">#ifndef BEAST_RANDOM_RNGFILL_H_INCLUDED</span></div>
<div class="line"><a id="l00002" name="l00002"></a><span class="lineno"> 2</span><span class="preprocessor">#define BEAST_RANDOM_RNGFILL_H_INCLUDED</span></div>
<div class="line"><a id="l00003" name="l00003"></a><span class="lineno"> 3</span> </div>
<div class="line"><a id="l00004" name="l00004"></a><span class="lineno"> 4</span><span class="preprocessor">#include &lt;xrpl/beast/utility/instrumentation.h&gt;</span></div>
<div class="line"><a id="l00005" name="l00005"></a><span class="lineno"> 5</span> </div>
<div class="line"><a id="l00006" name="l00006"></a><span class="lineno"> 6</span><span class="preprocessor">#include &lt;<a class="codeRef" href="http://en.cppreference.com/w/cpp/header/array.html">array</a>&gt;</span></div>
<div class="line"><a id="l00007" name="l00007"></a><span class="lineno"> 7</span><span class="preprocessor">#include &lt;<a class="codeRef" href="http://en.cppreference.com/w/cpp/header/cstdint.html">cstdint</a>&gt;</span></div>
<div class="line"><a id="l00008" name="l00008"></a><span class="lineno"> 8</span><span class="preprocessor">#include &lt;<a class="codeRef" href="http://en.cppreference.com/w/cpp/header/cstring.html">cstring</a>&gt;</span></div>
<div class="line"><a id="l00009" name="l00009"></a><span class="lineno"> 9</span><span class="preprocessor">#include &lt;<a class="codeRef" href="http://en.cppreference.com/w/cpp/header/type_traits.html">type_traits</a>&gt;</span></div>
<div class="line"><a id="l00010" name="l00010"></a><span class="lineno"> 10</span> </div>
<div class="line"><a id="l00011" name="l00011"></a><span class="lineno"> 11</span><span class="keyword">namespace </span><a class="code hl_namespace" href="namespacebeast.html">beast</a> {</div>
<div class="line"><a id="l00012" name="l00012"></a><span class="lineno"> 12</span> </div>
<div class="line"><a id="l00013" name="l00013"></a><span class="lineno"> 13</span><span class="keyword">template</span> &lt;<span class="keyword">class</span> Generator&gt;</div>
<div class="line"><a id="l00014" name="l00014"></a><span class="lineno"> 14</span><span class="keywordtype">void</span></div>
<div class="foldopen" id="foldopen00015" data-start="{" data-end="}">
<div class="line"><a id="l00015" name="l00015"></a><span class="lineno"><a class="line" href="namespacebeast.html#ad4d3145468ad564a92ac41b9812274a0"> 15</a></span><a class="code hl_function" href="namespacebeast.html#ad4d3145468ad564a92ac41b9812274a0">rngfill</a>(<span class="keywordtype">void</span>* <span class="keyword">const</span> buffer, <a class="code hl_classRef" href="http://en.cppreference.com/w/cpp/types/size_t.html">std::size_t</a> <span class="keyword">const</span> bytes, Generator&amp; g)</div>
<div class="line"><a id="l00016" name="l00016"></a><span class="lineno"> 16</span>{</div>
<div class="line"><a id="l00017" name="l00017"></a><span class="lineno"> 17</span> <span class="keyword">using </span>result_type = <span class="keyword">typename</span> Generator::result_type;</div>
<div class="line"><a id="l00018" name="l00018"></a><span class="lineno"> 18</span> <span class="keyword">constexpr</span> <a class="code hl_classRef" href="http://en.cppreference.com/w/cpp/types/size_t.html">std::size_t</a> result_size = <span class="keyword">sizeof</span>(result_type);</div>
<div class="line"><a id="l00019" name="l00019"></a><span class="lineno"> 19</span> </div>
<div class="line"><a id="l00020" name="l00020"></a><span class="lineno"> 20</span> <a class="code hl_classRef" href="http://en.cppreference.com/w/cpp/types/integer.html">std::uint8_t</a>* <span class="keyword">const</span> buffer_start = <span class="keyword">static_cast&lt;</span><a class="code hl_classRef" href="http://en.cppreference.com/w/cpp/types/integer.html">std::uint8_t</a>*<span class="keyword">&gt;</span>(buffer);</div>
<div class="line"><a id="l00021" name="l00021"></a><span class="lineno"> 21</span> <a class="code hl_classRef" href="http://en.cppreference.com/w/cpp/types/size_t.html">std::size_t</a> <span class="keyword">const</span> complete_iterations = bytes / result_size;</div>
<div class="line"><a id="l00022" name="l00022"></a><span class="lineno"> 22</span> <a class="code hl_classRef" href="http://en.cppreference.com/w/cpp/types/size_t.html">std::size_t</a> <span class="keyword">const</span> bytes_remaining = bytes % result_size;</div>
<div class="line"><a id="l00023" name="l00023"></a><span class="lineno"> 23</span> </div>
<div class="line"><a id="l00024" name="l00024"></a><span class="lineno"> 24</span> <span class="keywordflow">for</span> (<a class="code hl_classRef" href="http://en.cppreference.com/w/cpp/types/size_t.html">std::size_t</a> count = 0; count &lt; complete_iterations; ++count)</div>
<div class="line"><a id="l00025" name="l00025"></a><span class="lineno"> 25</span> {</div>
<div class="line"><a id="l00026" name="l00026"></a><span class="lineno"> 26</span> result_type <span class="keyword">const</span> v = g();</div>
<div class="line"><a id="l00027" name="l00027"></a><span class="lineno"> 27</span> <a class="code hl_classRef" href="http://en.cppreference.com/w/cpp/types/size_t.html">std::size_t</a> <span class="keyword">const</span> offset = count * result_size;</div>
<div class="line"><a id="l00028" name="l00028"></a><span class="lineno"> 28</span> <a class="code hl_functionRef" href="http://en.cppreference.com/w/cpp/string/byte/memcpy.html">std::memcpy</a>(buffer_start + offset, &amp;v, result_size);</div>
<div class="line"><a id="l00029" name="l00029"></a><span class="lineno"> 29</span> }</div>
<div class="line"><a id="l00030" name="l00030"></a><span class="lineno"> 30</span> </div>
<div class="line"><a id="l00031" name="l00031"></a><span class="lineno"> 31</span> <span class="keywordflow">if</span> (bytes_remaining &gt; 0)</div>
<div class="line"><a id="l00032" name="l00032"></a><span class="lineno"> 32</span> {</div>
<div class="line"><a id="l00033" name="l00033"></a><span class="lineno"> 33</span> result_type <span class="keyword">const</span> v = g();</div>
<div class="line"><a id="l00034" name="l00034"></a><span class="lineno"> 34</span> <a class="code hl_classRef" href="http://en.cppreference.com/w/cpp/types/size_t.html">std::size_t</a> <span class="keyword">const</span> offset = complete_iterations * result_size;</div>
<div class="line"><a id="l00035" name="l00035"></a><span class="lineno"> 35</span> <a class="code hl_functionRef" href="http://en.cppreference.com/w/cpp/string/byte/memcpy.html">std::memcpy</a>(buffer_start + offset, &amp;v, bytes_remaining);</div>
<div class="line"><a id="l00036" name="l00036"></a><span class="lineno"> 36</span> }</div>
<div class="line"><a id="l00037" name="l00037"></a><span class="lineno"> 37</span>}</div>
</div>
<div class="line"><a id="l00038" name="l00038"></a><span class="lineno"> 38</span> </div>
<div class="line"><a id="l00039" name="l00039"></a><span class="lineno"> 39</span><span class="keyword">template</span> &lt;</div>
<div class="line"><a id="l00040" name="l00040"></a><span class="lineno"> 40</span> <span class="keyword">class </span>Generator,</div>
<div class="line"><a id="l00041" name="l00041"></a><span class="lineno"> 41</span> <a class="code hl_classRef" href="http://en.cppreference.com/w/cpp/types/size_t.html">std::size_t</a> N,</div>
<div class="line"><a id="l00042" name="l00042"></a><span class="lineno"> 42</span> <span class="keyword">class </span>= <a class="code hl_classRef" href="http://en.cppreference.com/w/cpp/types/enable_if.html">std::enable_if_t</a>&lt;N % <span class="keyword">sizeof</span>(<span class="keyword">typename</span> Generator::result_type) == 0&gt;&gt;</div>
<div class="line"><a id="l00043" name="l00043"></a><span class="lineno"> 43</span><span class="keywordtype">void</span></div>
<div class="foldopen" id="foldopen00044" data-start="{" data-end="}">
<div class="line"><a id="l00044" name="l00044"></a><span class="lineno"><a class="line" href="namespacebeast.html#a3c2683b0fd77fcae6b6ef91fb90e5cbc"> 44</a></span><a class="code hl_function" href="namespacebeast.html#ad4d3145468ad564a92ac41b9812274a0">rngfill</a>(<a class="code hl_classRef" href="http://en.cppreference.com/w/cpp/container/array.html">std::array&lt;std::uint8_t, N&gt;</a>&amp; a, Generator&amp; g)</div>
<div class="line"><a id="l00045" name="l00045"></a><span class="lineno"> 45</span>{</div>
<div class="line"><a id="l00046" name="l00046"></a><span class="lineno"> 46</span> <span class="keyword">using </span>result_type = <span class="keyword">typename</span> Generator::result_type;</div>
<div class="line"><a id="l00047" name="l00047"></a><span class="lineno"> 47</span> <span class="keyword">auto</span> i = N / <span class="keyword">sizeof</span>(result_type);</div>
<div class="line"><a id="l00048" name="l00048"></a><span class="lineno"> 48</span> result_type* p = <span class="keyword">reinterpret_cast&lt;</span>result_type*<span class="keyword">&gt;</span>(a.<a class="code hl_functionRef" href="http://en.cppreference.com/w/cpp/container/array/data.html">data</a>());</div>
<div class="line"><a id="l00049" name="l00049"></a><span class="lineno"> 49</span> <span class="keywordflow">while</span> (i--)</div>
<div class="line"><a id="l00050" name="l00050"></a><span class="lineno"> 50</span> *p++ = g();</div>
<div class="line"><a id="l00051" name="l00051"></a><span class="lineno"> 51</span>}</div>
</div>
<div class="line"><a id="l00052" name="l00052"></a><span class="lineno"> 52</span> </div>
<div class="line"><a id="l00053" name="l00053"></a><span class="lineno"> 53</span>} <span class="comment">// namespace beast</span></div>
<div class="line"><a id="l00054" name="l00054"></a><span class="lineno"> 54</span> </div>
<div class="line"><a id="l00055" name="l00055"></a><span class="lineno"> 55</span><span class="preprocessor">#endif</span></div>
<div class="ttc" id="aarray_html"><div class="ttname"><a href="http://en.cppreference.com/w/cpp/header/array.html">array</a></div></div>
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<div class="ttc" id="anamespacebeast_html"><div class="ttname"><a href="namespacebeast.html">beast</a></div><div class="ttdef"><b>Definition</b> <a href="base__uint_8h_source.html#l00653">base_uint.h:653</a></div></div>
<div class="ttc" id="anamespacebeast_html_ad4d3145468ad564a92ac41b9812274a0"><div class="ttname"><a href="namespacebeast.html#ad4d3145468ad564a92ac41b9812274a0">beast::rngfill</a></div><div class="ttdeci">void rngfill(void *const buffer, std::size_t const bytes, Generator &amp;g)</div><div class="ttdef"><b>Definition</b> <a href="rngfill_8h_source.html#l00015">rngfill.h:15</a></div></div>
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