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| <a name="boost.random.subtract_with_idp151547040"></a><div class="titlepage"></div> |
| <div class="refnamediv"> |
| <h2><span class="refentrytitle">Class template subtract_with_carry_01_engine</span></h2> |
| <p>boost::random::subtract_with_carry_01_engine</p> |
| </div> |
| <h2 xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv-title">Synopsis</h2> |
| <div xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv"><pre class="synopsis"><span class="comment">// In header: <<a class="link" href="../../boost_random/reference.html#header.boost.random.subtract_with_carry_hpp" title="Header <boost/random/subtract_with_carry.hpp>">boost/random/subtract_with_carry.hpp</a>> |
| |
| </span><span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> RealType<span class="special">,</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> w<span class="special">,</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> s<span class="special">,</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> r<span class="special">></span> |
| <span class="keyword">class</span> <a class="link" href="subtract_with_idp151547040.html" title="Class template subtract_with_carry_01_engine">subtract_with_carry_01_engine</a> <span class="special">{</span> |
| <span class="keyword">public</span><span class="special">:</span> |
| <span class="comment">// types</span> |
| <span class="keyword">typedef</span> <span class="identifier">RealType</span> <a name="boost.random.subtract_with_idp151547040.result_type"></a><span class="identifier">result_type</span><span class="special">;</span> |
| |
| <span class="comment">// <a class="link" href="subtract_with_idp151547040.html#boost.random.subtract_with_idp151547040construct-copy-destruct">construct/copy/destruct</a></span> |
| <a class="link" href="subtract_with_idp151547040.html#idp207257088-bb"><span class="identifier">subtract_with_carry_01_engine</span></a><span class="special">(</span><span class="special">)</span><span class="special">;</span> |
| <span class="keyword">explicit</span> <a class="link" href="subtract_with_idp151547040.html#idp207258480-bb"><span class="identifier">subtract_with_carry_01_engine</span></a><span class="special">(</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">uint32_t</span><span class="special">)</span><span class="special">;</span> |
| <span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> SeedSeq<span class="special">></span> <span class="keyword">explicit</span> <a class="link" href="subtract_with_idp151547040.html#idp207260832-bb"><span class="identifier">subtract_with_carry_01_engine</span></a><span class="special">(</span><span class="identifier">SeedSeq</span> <span class="special">&</span><span class="special">)</span><span class="special">;</span> |
| <span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> It<span class="special">></span> <a class="link" href="subtract_with_idp151547040.html#idp207264096-bb"><span class="identifier">subtract_with_carry_01_engine</span></a><span class="special">(</span><span class="identifier">It</span> <span class="special">&</span><span class="special">,</span> <span class="identifier">It</span><span class="special">)</span><span class="special">;</span> |
| |
| <span class="comment">// <a class="link" href="subtract_with_idp151547040.html#idp105736720-bb">public member functions</a></span> |
| <span class="keyword">void</span> <a class="link" href="subtract_with_idp151547040.html#idp105737280-bb"><span class="identifier">seed</span></a><span class="special">(</span><span class="special">)</span><span class="special">;</span> |
| <span class="keyword">void</span> <a class="link" href="subtract_with_idp151547040.html#idp146753536-bb"><span class="identifier">seed</span></a><span class="special">(</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">uint32_t</span><span class="special">)</span><span class="special">;</span> |
| <span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> SeedSeq<span class="special">></span> <span class="keyword">void</span> <a class="link" href="subtract_with_idp151547040.html#idp146755904-bb"><span class="identifier">seed</span></a><span class="special">(</span><span class="identifier">SeedSeq</span> <span class="special">&</span><span class="special">)</span><span class="special">;</span> |
| <span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> It<span class="special">></span> <span class="keyword">void</span> <a class="link" href="subtract_with_idp151547040.html#idp146759184-bb"><span class="identifier">seed</span></a><span class="special">(</span><span class="identifier">It</span> <span class="special">&</span><span class="special">,</span> <span class="identifier">It</span><span class="special">)</span><span class="special">;</span> |
| <span class="identifier">result_type</span> <a class="link" href="subtract_with_idp151547040.html#idp146763296-bb"><span class="keyword">operator</span><span class="special">(</span><span class="special">)</span></a><span class="special">(</span><span class="special">)</span><span class="special">;</span> |
| <span class="keyword">void</span> <a class="link" href="subtract_with_idp151547040.html#idp146764592-bb"><span class="identifier">discard</span></a><span class="special">(</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">uintmax_t</span><span class="special">)</span><span class="special">;</span> |
| <span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> Iter<span class="special">></span> <span class="keyword">void</span> <a class="link" href="subtract_with_idp151547040.html#idp146766960-bb"><span class="identifier">generate</span></a><span class="special">(</span><span class="identifier">Iter</span><span class="special">,</span> <span class="identifier">Iter</span><span class="special">)</span><span class="special">;</span> |
| |
| <span class="comment">// <a class="link" href="subtract_with_idp151547040.html#idp99900928-bb">public static functions</a></span> |
| <span class="keyword">static</span> <span class="identifier">result_type</span> <a class="link" href="subtract_with_idp151547040.html#idp99901376-bb"><span class="identifier">min</span></a><span class="special">(</span><span class="special">)</span><span class="special">;</span> |
| <span class="keyword">static</span> <span class="identifier">result_type</span> <a class="link" href="subtract_with_idp151547040.html#idp99902960-bb"><span class="identifier">max</span></a><span class="special">(</span><span class="special">)</span><span class="special">;</span> |
| |
| <span class="comment">// <a class="link" href="subtract_with_idp151547040.html#idp99904704-bb">friend functions</a></span> |
| <span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> CharT<span class="special">,</span> <span class="keyword">typename</span> Traits<span class="special">></span> |
| <span class="keyword">friend</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_ostream</span><span class="special"><</span> <span class="identifier">CharT</span><span class="special">,</span> <span class="identifier">Traits</span> <span class="special">></span> <span class="special">&</span> |
| <a class="link" href="subtract_with_idp151547040.html#idp99905264-bb"><span class="keyword">operator</span><span class="special"><<</span></a><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_ostream</span><span class="special"><</span> <span class="identifier">CharT</span><span class="special">,</span> <span class="identifier">Traits</span> <span class="special">></span> <span class="special">&</span><span class="special">,</span> |
| <span class="keyword">const</span> <a class="link" href="subtract_with_idp151547040.html" title="Class template subtract_with_carry_01_engine">subtract_with_carry_01_engine</a> <span class="special">&</span><span class="special">)</span><span class="special">;</span> |
| <span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> CharT<span class="special">,</span> <span class="keyword">typename</span> Traits<span class="special">></span> |
| <span class="keyword">friend</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_istream</span><span class="special"><</span> <span class="identifier">CharT</span><span class="special">,</span> <span class="identifier">Traits</span> <span class="special">></span> <span class="special">&</span> |
| <a class="link" href="subtract_with_idp151547040.html#idp99910896-bb"><span class="keyword">operator</span><span class="special">>></span></a><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_istream</span><span class="special"><</span> <span class="identifier">CharT</span><span class="special">,</span> <span class="identifier">Traits</span> <span class="special">></span> <span class="special">&</span><span class="special">,</span> |
| <span class="keyword">const</span> <a class="link" href="subtract_with_idp151547040.html" title="Class template subtract_with_carry_01_engine">subtract_with_carry_01_engine</a> <span class="special">&</span><span class="special">)</span><span class="special">;</span> |
| <span class="keyword">friend</span> <span class="keyword">bool</span> <a class="link" href="subtract_with_idp151547040.html#idp224181792-bb"><span class="keyword">operator</span><span class="special">==</span></a><span class="special">(</span><span class="keyword">const</span> <a class="link" href="subtract_with_idp151547040.html" title="Class template subtract_with_carry_01_engine">subtract_with_carry_01_engine</a> <span class="special">&</span><span class="special">,</span> |
| <span class="keyword">const</span> <a class="link" href="subtract_with_idp151547040.html" title="Class template subtract_with_carry_01_engine">subtract_with_carry_01_engine</a> <span class="special">&</span><span class="special">)</span><span class="special">;</span> |
| <span class="keyword">friend</span> <span class="keyword">bool</span> <a class="link" href="subtract_with_idp151547040.html#idp224185312-bb"><span class="keyword">operator</span><span class="special">!=</span></a><span class="special">(</span><span class="keyword">const</span> <a class="link" href="subtract_with_idp151547040.html" title="Class template subtract_with_carry_01_engine">subtract_with_carry_01_engine</a> <span class="special">&</span><span class="special">,</span> |
| <span class="keyword">const</span> <a class="link" href="subtract_with_idp151547040.html" title="Class template subtract_with_carry_01_engine">subtract_with_carry_01_engine</a> <span class="special">&</span><span class="special">)</span><span class="special">;</span> |
| |
| <span class="comment">// public data members</span> |
| <span class="keyword">static</span> <span class="keyword">const</span> <span class="keyword">bool</span> <span class="identifier">has_fixed_range</span><span class="special">;</span> |
| <span class="keyword">static</span> <span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <span class="identifier">word_size</span><span class="special">;</span> |
| <span class="keyword">static</span> <span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <span class="identifier">long_lag</span><span class="special">;</span> |
| <span class="keyword">static</span> <span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> <span class="identifier">short_lag</span><span class="special">;</span> |
| <span class="keyword">static</span> <span class="keyword">const</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">uint32_t</span> <span class="identifier">default_seed</span><span class="special">;</span> |
| <span class="special">}</span><span class="special">;</span></pre></div> |
| <div class="refsect1"> |
| <a name="idp407545344"></a><h2>Description</h2> |
| <p>Instantiations of <a class="link" href="subtract_with_idp151547040.html" title="Class template subtract_with_carry_01_engine">subtract_with_carry_01_engine</a> model a <a class="link" href="../../boost_random/reference.html#boost_random.reference.concepts.pseudo_random_number_generator" title="Pseudo-Random Number Generator">pseudo-random number generator</a> . The algorithm is described in</p> |
| <p> </p> |
| <div class="blockquote"><blockquote class="blockquote"><p> "A New Class of Random Number Generators", George Marsaglia and Arif Zaman, Annals of Applied Probability, Volume 1, Number 3 (1991), 462-480. </p></blockquote></div> |
| <p> </p> |
| <div class="refsect2"> |
| <a name="idp407548896"></a><h3> |
| <a name="boost.random.subtract_with_idp151547040construct-copy-destruct"></a><code class="computeroutput">subtract_with_carry_01_engine</code> |
| public |
| construct/copy/destruct</h3> |
| <div class="orderedlist"><ol class="orderedlist" type="1"> |
| <li class="listitem"> |
| <pre class="literallayout"><a name="idp207257088-bb"></a><span class="identifier">subtract_with_carry_01_engine</span><span class="special">(</span><span class="special">)</span><span class="special">;</span></pre> |
| <p>Creates a new <code class="computeroutput"><a class="link" href="subtract_with_idp151547040.html" title="Class template subtract_with_carry_01_engine">subtract_with_carry_01_engine</a></code> using the default seed. </p> |
| </li> |
| <li class="listitem"> |
| <pre class="literallayout"><span class="keyword">explicit</span> <a name="idp207258480-bb"></a><span class="identifier">subtract_with_carry_01_engine</span><span class="special">(</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">uint32_t</span> value<span class="special">)</span><span class="special">;</span></pre> |
| <p>Creates a new <code class="computeroutput"><a class="link" href="subtract_with_idp151547040.html" title="Class template subtract_with_carry_01_engine">subtract_with_carry_01_engine</a></code> and seeds it with value. </p> |
| </li> |
| <li class="listitem"> |
| <pre class="literallayout"><span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> SeedSeq<span class="special">></span> |
| <span class="keyword">explicit</span> <a name="idp207260832-bb"></a><span class="identifier">subtract_with_carry_01_engine</span><span class="special">(</span><span class="identifier">SeedSeq</span> <span class="special">&</span> seq<span class="special">)</span><span class="special">;</span></pre> |
| <p>Creates a new <code class="computeroutput"><a class="link" href="subtract_with_idp151547040.html" title="Class template subtract_with_carry_01_engine">subtract_with_carry_01_engine</a></code> and seeds with values produced by seq.generate(). </p> |
| </li> |
| <li class="listitem"> |
| <pre class="literallayout"><span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> It<span class="special">></span> <a name="idp207264096-bb"></a><span class="identifier">subtract_with_carry_01_engine</span><span class="special">(</span><span class="identifier">It</span> <span class="special">&</span> first<span class="special">,</span> <span class="identifier">It</span> last<span class="special">)</span><span class="special">;</span></pre> |
| <p>Creates a new <code class="computeroutput"><a class="link" href="subtract_with_idp151547040.html" title="Class template subtract_with_carry_01_engine">subtract_with_carry_01_engine</a></code> and seeds it with values from a range. Advances first to point one past the last consumed value. If the range does not contain enough elements to fill the entire state, throws <code class="computeroutput">std::invalid_argument</code>. </p> |
| </li> |
| </ol></div> |
| </div> |
| <div class="refsect2"> |
| <a name="idp407585168"></a><h3> |
| <a name="idp105736720-bb"></a><code class="computeroutput">subtract_with_carry_01_engine</code> public member functions</h3> |
| <div class="orderedlist"><ol class="orderedlist" type="1"> |
| <li class="listitem"> |
| <pre class="literallayout"><span class="keyword">void</span> <a name="idp105737280-bb"></a><span class="identifier">seed</span><span class="special">(</span><span class="special">)</span><span class="special">;</span></pre> |
| <p>Seeds the generator with the default seed. </p> |
| </li> |
| <li class="listitem"> |
| <pre class="literallayout"><span class="keyword">void</span> <a name="idp146753536-bb"></a><span class="identifier">seed</span><span class="special">(</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">uint32_t</span> value<span class="special">)</span><span class="special">;</span></pre> |
| <p>Seeds the generator with <code class="computeroutput">value</code>. </p> |
| </li> |
| <li class="listitem"> |
| <pre class="literallayout"><span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> SeedSeq<span class="special">></span> <span class="keyword">void</span> <a name="idp146755904-bb"></a><span class="identifier">seed</span><span class="special">(</span><span class="identifier">SeedSeq</span> <span class="special">&</span> seq<span class="special">)</span><span class="special">;</span></pre> |
| <p>Seeds the generator with values produced by <code class="computeroutput">seq.generate()</code>. </p> |
| </li> |
| <li class="listitem"> |
| <pre class="literallayout"><span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> It<span class="special">></span> <span class="keyword">void</span> <a name="idp146759184-bb"></a><span class="identifier">seed</span><span class="special">(</span><span class="identifier">It</span> <span class="special">&</span> first<span class="special">,</span> <span class="identifier">It</span> last<span class="special">)</span><span class="special">;</span></pre> |
| <p>Seeds the generator with values from a range. Updates first to point one past the last consumed element. If there are not enough elements in the range to fill the entire state, throws <code class="computeroutput">std::invalid_argument</code>. </p> |
| </li> |
| <li class="listitem"> |
| <pre class="literallayout"><span class="identifier">result_type</span> <a name="idp146763296-bb"></a><span class="keyword">operator</span><span class="special">(</span><span class="special">)</span><span class="special">(</span><span class="special">)</span><span class="special">;</span></pre> |
| <p>Returns the next value of the generator. </p> |
| </li> |
| <li class="listitem"> |
| <pre class="literallayout"><span class="keyword">void</span> <a name="idp146764592-bb"></a><span class="identifier">discard</span><span class="special">(</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">uintmax_t</span> z<span class="special">)</span><span class="special">;</span></pre> |
| <p>Advances the state of the generator by <code class="computeroutput">z</code>. </p> |
| </li> |
| <li class="listitem"> |
| <pre class="literallayout"><span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> Iter<span class="special">></span> <span class="keyword">void</span> <a name="idp146766960-bb"></a><span class="identifier">generate</span><span class="special">(</span><span class="identifier">Iter</span> first<span class="special">,</span> <span class="identifier">Iter</span> last<span class="special">)</span><span class="special">;</span></pre> |
| <p>Fills a range with random values. </p> |
| </li> |
| </ol></div> |
| </div> |
| <div class="refsect2"> |
| <a name="idp407640864"></a><h3> |
| <a name="idp99900928-bb"></a><code class="computeroutput">subtract_with_carry_01_engine</code> public static functions</h3> |
| <div class="orderedlist"><ol class="orderedlist" type="1"> |
| <li class="listitem"> |
| <pre class="literallayout"><span class="keyword">static</span> <span class="identifier">result_type</span> <a name="idp99901376-bb"></a><span class="identifier">min</span><span class="special">(</span><span class="special">)</span><span class="special">;</span></pre> |
| <p>Returns the smallest value that the generator can produce. </p> |
| </li> |
| <li class="listitem"> |
| <pre class="literallayout"><span class="keyword">static</span> <span class="identifier">result_type</span> <a name="idp99902960-bb"></a><span class="identifier">max</span><span class="special">(</span><span class="special">)</span><span class="special">;</span></pre> |
| <p>Returns the largest value that the generator can produce. </p> |
| </li> |
| </ol></div> |
| </div> |
| <div class="refsect2"> |
| <a name="idp407653664"></a><h3> |
| <a name="idp99904704-bb"></a><code class="computeroutput">subtract_with_carry_01_engine</code> friend functions</h3> |
| <div class="orderedlist"><ol class="orderedlist" type="1"> |
| <li class="listitem"> |
| <pre class="literallayout"><span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> CharT<span class="special">,</span> <span class="keyword">typename</span> Traits<span class="special">></span> |
| <span class="keyword">friend</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_ostream</span><span class="special"><</span> <span class="identifier">CharT</span><span class="special">,</span> <span class="identifier">Traits</span> <span class="special">></span> <span class="special">&</span> |
| <a name="idp99905264-bb"></a><span class="keyword">operator</span><span class="special"><<</span><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_ostream</span><span class="special"><</span> <span class="identifier">CharT</span><span class="special">,</span> <span class="identifier">Traits</span> <span class="special">></span> <span class="special">&</span> os<span class="special">,</span> |
| <span class="keyword">const</span> <a class="link" href="subtract_with_idp151547040.html" title="Class template subtract_with_carry_01_engine">subtract_with_carry_01_engine</a> <span class="special">&</span> f<span class="special">)</span><span class="special">;</span></pre> |
| <p>Writes a <code class="computeroutput"><a class="link" href="subtract_with_idp151547040.html" title="Class template subtract_with_carry_01_engine">subtract_with_carry_01_engine</a></code> to a <code class="computeroutput">std::ostream</code>. </p> |
| </li> |
| <li class="listitem"> |
| <pre class="literallayout"><span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> CharT<span class="special">,</span> <span class="keyword">typename</span> Traits<span class="special">></span> |
| <span class="keyword">friend</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_istream</span><span class="special"><</span> <span class="identifier">CharT</span><span class="special">,</span> <span class="identifier">Traits</span> <span class="special">></span> <span class="special">&</span> |
| <a name="idp99910896-bb"></a><span class="keyword">operator</span><span class="special">>></span><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_istream</span><span class="special"><</span> <span class="identifier">CharT</span><span class="special">,</span> <span class="identifier">Traits</span> <span class="special">></span> <span class="special">&</span> is<span class="special">,</span> |
| <span class="keyword">const</span> <a class="link" href="subtract_with_idp151547040.html" title="Class template subtract_with_carry_01_engine">subtract_with_carry_01_engine</a> <span class="special">&</span> f<span class="special">)</span><span class="special">;</span></pre> |
| <p>Reads a <code class="computeroutput"><a class="link" href="subtract_with_idp151547040.html" title="Class template subtract_with_carry_01_engine">subtract_with_carry_01_engine</a></code> from a <code class="computeroutput">std::istream</code>. </p> |
| </li> |
| <li class="listitem"> |
| <pre class="literallayout"><span class="keyword">friend</span> <span class="keyword">bool</span> <a name="idp224181792-bb"></a><span class="keyword">operator</span><span class="special">==</span><span class="special">(</span><span class="keyword">const</span> <a class="link" href="subtract_with_idp151547040.html" title="Class template subtract_with_carry_01_engine">subtract_with_carry_01_engine</a> <span class="special">&</span> x<span class="special">,</span> |
| <span class="keyword">const</span> <a class="link" href="subtract_with_idp151547040.html" title="Class template subtract_with_carry_01_engine">subtract_with_carry_01_engine</a> <span class="special">&</span> y<span class="special">)</span><span class="special">;</span></pre> |
| <p>Returns true if the two generators will produce identical sequences. </p> |
| </li> |
| <li class="listitem"> |
| <pre class="literallayout"><span class="keyword">friend</span> <span class="keyword">bool</span> <a name="idp224185312-bb"></a><span class="keyword">operator</span><span class="special">!=</span><span class="special">(</span><span class="keyword">const</span> <a class="link" href="subtract_with_idp151547040.html" title="Class template subtract_with_carry_01_engine">subtract_with_carry_01_engine</a> <span class="special">&</span> lhs<span class="special">,</span> |
| <span class="keyword">const</span> <a class="link" href="subtract_with_idp151547040.html" title="Class template subtract_with_carry_01_engine">subtract_with_carry_01_engine</a> <span class="special">&</span> rhs<span class="special">)</span><span class="special">;</span></pre> |
| <p>Returns true if the two generators will produce different sequences. </p> |
| </li> |
| </ol></div> |
| </div> |
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| <td align="right"><div class="copyright-footer">Copyright © 2000-2005 Jens Maurer<br>Copyright © 2009, 2010 Steven Watanabe<p> |
| Distributed under the Boost Software License, Version 1.0. (See accompanying |
| file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>) |
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