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<h2><span class="refentrytitle">Class template piecewise_linear_distribution</span></h2>
<p>boost::random::piecewise_linear_distribution</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.piecewise_linear_distribution_hpp" title="Header <boost/random/piecewise_linear_distribution.hpp>">boost/random/piecewise_linear_distribution.hpp</a>>
</span><span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> RealType <span class="special">=</span> <span class="keyword">double</span><span class="special">></span>
<span class="keyword">class</span> <a class="link" href="piecew_1_3_34_5_6_32_1_1_1.html" title="Class template piecewise_linear_distribution">piecewise_linear_distribution</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">std</span><span class="special">::</span><span class="identifier">size_t</span> <a name="boost.random.piecew_1_3_34_5_6_32_1_1_1.input_type"></a><span class="identifier">input_type</span><span class="special">;</span>
<span class="keyword">typedef</span> <span class="identifier">RealType</span> <a name="boost.random.piecew_1_3_34_5_6_32_1_1_1.result_type"></a><span class="identifier">result_type</span><span class="special">;</span>
<span class="comment">// member classes/structs/unions</span>
<span class="keyword">class</span> <a class="link" href="piecew_1_3_34_5_6_32_1_1_1/param_type.html" title="Class param_type">param_type</a> <span class="special">{</span>
<span class="keyword">public</span><span class="special">:</span>
<span class="comment">// types</span>
<span class="keyword">typedef</span> <a class="link" href="piecew_1_3_34_5_6_32_1_1_1.html" title="Class template piecewise_linear_distribution">piecewise_linear_distribution</a> <a class="link" href="piecew_1_3_34_5_6_32_1_1_1/param_type.html#boost.random.piecew_1_3_34_5_6_32_1_1_1.param_type.distribution_type"><span class="identifier">distribution_type</span></a><span class="special">;</span>
<span class="comment">// <a class="link" href="piecew_1_3_34_5_6_32_1_1_1/param_type.html#boost.random.piecew_1_3_34_5_6_32_1_1_1.param_typeconstruct-copy-destruct">construct/copy/destruct</a></span>
<a class="link" href="piecew_1_3_34_5_6_32_1_1_1/param_type.html#id-1_3_34_5_6_32_1_1_1_3_4-bb"><span class="identifier">param_type</span></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> IntervalIter<span class="special">,</span> <span class="keyword">typename</span> WeightIter<span class="special">></span>
<a class="link" href="piecew_1_3_34_5_6_32_1_1_1/param_type.html#id-1_3_34_5_6_32_1_1_1_3_5-bb"><span class="identifier">param_type</span></a><span class="special">(</span><span class="identifier">IntervalIter</span><span class="special">,</span> <span class="identifier">IntervalIter</span><span class="special">,</span> <span class="identifier">WeightIter</span><span class="special">)</span><span class="special">;</span>
<span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> T<span class="special">,</span> <span class="keyword">typename</span> F<span class="special">></span>
<a class="link" href="piecew_1_3_34_5_6_32_1_1_1/param_type.html#id-1_3_34_5_6_32_1_1_1_3_6-bb"><span class="identifier">param_type</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">initializer_list</span><span class="special"><</span> <span class="identifier">T</span> <span class="special">></span> <span class="special">&</span><span class="special">,</span> <span class="identifier">F</span><span class="special">)</span><span class="special">;</span>
<span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> IntervalRange<span class="special">,</span> <span class="keyword">typename</span> WeightRange<span class="special">></span>
<a class="link" href="piecew_1_3_34_5_6_32_1_1_1/param_type.html#id-1_3_34_5_6_32_1_1_1_3_7-bb"><span class="identifier">param_type</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">IntervalRange</span> <span class="special">&</span><span class="special">,</span> <span class="keyword">const</span> <span class="identifier">WeightRange</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> F<span class="special">></span> <a class="link" href="piecew_1_3_34_5_6_32_1_1_1/param_type.html#id-1_3_34_5_6_32_1_1_1_3_8-bb"><span class="identifier">param_type</span></a><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span><span class="special">,</span> <span class="identifier">RealType</span><span class="special">,</span> <span class="identifier">RealType</span><span class="special">,</span> <span class="identifier">F</span><span class="special">)</span><span class="special">;</span>
<span class="comment">// <a class="link" href="piecew_1_3_34_5_6_32_1_1_1/param_type.html#id-1_3_34_5_6_32_1_1_1_3_2-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="piecew_1_3_34_5_6_32_1_1_1/param_type.html#id-1_3_34_5_6_32_1_1_1_3_2_1-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="piecew_1_3_34_5_6_32_1_1_1/param_type.html" title="Class param_type">param_type</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="piecew_1_3_34_5_6_32_1_1_1/param_type.html#id-1_3_34_5_6_32_1_1_1_3_2_2-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="piecew_1_3_34_5_6_32_1_1_1/param_type.html" title="Class param_type">param_type</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="piecew_1_3_34_5_6_32_1_1_1/param_type.html#id-1_3_34_5_6_32_1_1_1_3_2_3-bb"><span class="keyword">operator</span><span class="special">==</span></a><span class="special">(</span><span class="keyword">const</span> <a class="link" href="piecew_1_3_34_5_6_32_1_1_1/param_type.html" title="Class param_type">param_type</a> <span class="special">&</span><span class="special">,</span> <span class="keyword">const</span> <a class="link" href="piecew_1_3_34_5_6_32_1_1_1/param_type.html" title="Class param_type">param_type</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="piecew_1_3_34_5_6_32_1_1_1/param_type.html#id-1_3_34_5_6_32_1_1_1_3_2_4-bb"><span class="keyword">operator</span><span class="special">!=</span></a><span class="special">(</span><span class="keyword">const</span> <a class="link" href="piecew_1_3_34_5_6_32_1_1_1/param_type.html" title="Class param_type">param_type</a> <span class="special">&</span><span class="special">,</span> <span class="keyword">const</span> <a class="link" href="piecew_1_3_34_5_6_32_1_1_1/param_type.html" title="Class param_type">param_type</a> <span class="special">&</span><span class="special">)</span><span class="special">;</span>
<span class="comment">// <a class="link" href="piecew_1_3_34_5_6_32_1_1_1/param_type.html#id-1_3_34_5_6_32_1_1_1_3_3-bb">public member functions</a></span>
<span class="identifier">std</span><span class="special">::</span><span class="identifier">vector</span><span class="special"><</span> <span class="identifier">RealType</span> <span class="special">></span> <a class="link" href="piecew_1_3_34_5_6_32_1_1_1/param_type.html#id-1_3_34_5_6_32_1_1_1_3_3_1-bb"><span class="identifier">intervals</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
<span class="identifier">std</span><span class="special">::</span><span class="identifier">vector</span><span class="special"><</span> <span class="identifier">RealType</span> <span class="special">></span> <a class="link" href="piecew_1_3_34_5_6_32_1_1_1/param_type.html#id-1_3_34_5_6_32_1_1_1_3_3_2-bb"><span class="identifier">densities</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
<span class="special">}</span><span class="special">;</span>
<span class="comment">// <a class="link" href="piecew_1_3_34_5_6_32_1_1_1.html#boost.random.piecew_1_3_34_5_6_32_1_1_1construct-copy-destruct">construct/copy/destruct</a></span>
<a class="link" href="piecew_1_3_34_5_6_32_1_1_1.html#id-1_3_34_5_6_32_1_1_1_7-bb"><span class="identifier">piecewise_linear_distribution</span></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> IntervalIter<span class="special">,</span> <span class="keyword">typename</span> WeightIter<span class="special">></span>
<a class="link" href="piecew_1_3_34_5_6_32_1_1_1.html#id-1_3_34_5_6_32_1_1_1_8-bb"><span class="identifier">piecewise_linear_distribution</span></a><span class="special">(</span><span class="identifier">IntervalIter</span><span class="special">,</span> <span class="identifier">IntervalIter</span><span class="special">,</span> <span class="identifier">WeightIter</span><span class="special">)</span><span class="special">;</span>
<span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> T<span class="special">,</span> <span class="keyword">typename</span> F<span class="special">></span>
<a class="link" href="piecew_1_3_34_5_6_32_1_1_1.html#id-1_3_34_5_6_32_1_1_1_9-bb"><span class="identifier">piecewise_linear_distribution</span></a><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">initializer_list</span><span class="special"><</span> <span class="identifier">T</span> <span class="special">></span><span class="special">,</span> <span class="identifier">F</span><span class="special">)</span><span class="special">;</span>
<span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> IntervalsRange<span class="special">,</span> <span class="keyword">typename</span> WeightsRange<span class="special">></span>
<a class="link" href="piecew_1_3_34_5_6_32_1_1_1.html#id-1_3_34_5_6_32_1_1_1_10-bb"><span class="identifier">piecewise_linear_distribution</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">IntervalsRange</span> <span class="special">&</span><span class="special">,</span>
<span class="keyword">const</span> <span class="identifier">WeightsRange</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> F<span class="special">></span>
<a class="link" href="piecew_1_3_34_5_6_32_1_1_1.html#id-1_3_34_5_6_32_1_1_1_11-bb"><span class="identifier">piecewise_linear_distribution</span></a><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span><span class="special">,</span> <span class="identifier">RealType</span><span class="special">,</span> <span class="identifier">RealType</span><span class="special">,</span> <span class="identifier">F</span><span class="special">)</span><span class="special">;</span>
<span class="keyword">explicit</span> <a class="link" href="piecew_1_3_34_5_6_32_1_1_1.html#id-1_3_34_5_6_32_1_1_1_12-bb"><span class="identifier">piecewise_linear_distribution</span></a><span class="special">(</span><span class="keyword">const</span> <a class="link" href="piecew_1_3_34_5_6_32_1_1_1/param_type.html" title="Class param_type">param_type</a> <span class="special">&</span><span class="special">)</span><span class="special">;</span>
<span class="comment">// <a class="link" href="piecew_1_3_34_5_6_32_1_1_1.html#id-1_3_34_5_6_32_1_1_1_6-bb">public member functions</a></span>
<span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> URNG<span class="special">></span> <span class="identifier">RealType</span> <a class="link" href="piecew_1_3_34_5_6_32_1_1_1.html#id-1_3_34_5_6_32_1_1_1_6_1-bb"><span class="keyword">operator</span><span class="special">(</span><span class="special">)</span></a><span class="special">(</span><span class="identifier">URNG</span> <span class="special">&</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
<span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> URNG<span class="special">></span>
<span class="identifier">RealType</span> <a class="link" href="piecew_1_3_34_5_6_32_1_1_1.html#id-1_3_34_5_6_32_1_1_1_6_2-bb"><span class="keyword">operator</span><span class="special">(</span><span class="special">)</span></a><span class="special">(</span><span class="identifier">URNG</span> <span class="special">&</span><span class="special">,</span> <span class="keyword">const</span> <a class="link" href="piecew_1_3_34_5_6_32_1_1_1/param_type.html" title="Class param_type">param_type</a> <span class="special">&</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
<span class="identifier">result_type</span> <a class="link" href="piecew_1_3_34_5_6_32_1_1_1.html#id-1_3_34_5_6_32_1_1_1_6_3-bb"><span class="identifier">min</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
<span class="identifier">result_type</span> <a class="link" href="piecew_1_3_34_5_6_32_1_1_1.html#id-1_3_34_5_6_32_1_1_1_6_4-bb"><span class="identifier">max</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
<span class="identifier">std</span><span class="special">::</span><span class="identifier">vector</span><span class="special"><</span> <span class="identifier">RealType</span> <span class="special">></span> <a class="link" href="piecew_1_3_34_5_6_32_1_1_1.html#id-1_3_34_5_6_32_1_1_1_6_5-bb"><span class="identifier">densities</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
<span class="identifier">std</span><span class="special">::</span><span class="identifier">vector</span><span class="special"><</span> <span class="identifier">RealType</span> <span class="special">></span> <a class="link" href="piecew_1_3_34_5_6_32_1_1_1.html#id-1_3_34_5_6_32_1_1_1_6_6-bb"><span class="identifier">intervals</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
<a class="link" href="piecew_1_3_34_5_6_32_1_1_1/param_type.html" title="Class param_type">param_type</a> <a class="link" href="piecew_1_3_34_5_6_32_1_1_1.html#id-1_3_34_5_6_32_1_1_1_6_7-bb"><span class="identifier">param</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
<span class="keyword">void</span> <a class="link" href="piecew_1_3_34_5_6_32_1_1_1.html#id-1_3_34_5_6_32_1_1_1_6_8-bb"><span class="identifier">param</span></a><span class="special">(</span><span class="keyword">const</span> <a class="link" href="piecew_1_3_34_5_6_32_1_1_1/param_type.html" title="Class param_type">param_type</a> <span class="special">&</span><span class="special">)</span><span class="special">;</span>
<span class="keyword">void</span> <a class="link" href="piecew_1_3_34_5_6_32_1_1_1.html#id-1_3_34_5_6_32_1_1_1_6_9-bb"><span class="identifier">reset</span></a><span class="special">(</span><span class="special">)</span><span class="special">;</span>
<span class="comment">// <a class="link" href="piecew_1_3_34_5_6_32_1_1_1.html#id-1_3_34_5_6_32_1_1_1_13-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="piecew_1_3_34_5_6_32_1_1_1.html#id-1_3_34_5_6_32_1_1_1_13_1-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="piecew_1_3_34_5_6_32_1_1_1.html" title="Class template piecewise_linear_distribution">piecewise_linear_distribution</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="piecew_1_3_34_5_6_32_1_1_1.html#id-1_3_34_5_6_32_1_1_1_13_2-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="piecew_1_3_34_5_6_32_1_1_1.html" title="Class template piecewise_linear_distribution">piecewise_linear_distribution</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="piecew_1_3_34_5_6_32_1_1_1.html#id-1_3_34_5_6_32_1_1_1_13_3-bb"><span class="keyword">operator</span><span class="special">==</span></a><span class="special">(</span><span class="keyword">const</span> <a class="link" href="piecew_1_3_34_5_6_32_1_1_1.html" title="Class template piecewise_linear_distribution">piecewise_linear_distribution</a> <span class="special">&</span><span class="special">,</span>
<span class="keyword">const</span> <a class="link" href="piecew_1_3_34_5_6_32_1_1_1.html" title="Class template piecewise_linear_distribution">piecewise_linear_distribution</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="piecew_1_3_34_5_6_32_1_1_1.html#id-1_3_34_5_6_32_1_1_1_13_4-bb"><span class="keyword">operator</span><span class="special">!=</span></a><span class="special">(</span><span class="keyword">const</span> <a class="link" href="piecew_1_3_34_5_6_32_1_1_1.html" title="Class template piecewise_linear_distribution">piecewise_linear_distribution</a> <span class="special">&</span><span class="special">,</span>
<span class="keyword">const</span> <a class="link" href="piecew_1_3_34_5_6_32_1_1_1.html" title="Class template piecewise_linear_distribution">piecewise_linear_distribution</a> <span class="special">&</span><span class="special">)</span><span class="special">;</span>
<span class="special">}</span><span class="special">;</span></pre></div>
<div class="refsect1">
<a name="id-1.3.34.5.6.31.3.4"></a><h2>Description</h2>
<p>The class <code class="computeroutput"><a class="link" href="piecew_1_3_34_5_6_32_1_1_1.html" title="Class template piecewise_linear_distribution">piecewise_linear_distribution</a></code> models a <a class="link" href="../../boost_random/reference.html#boost_random.reference.concepts.random_distribution" title="Random Distribution">random distribution</a> . </p>
<div class="refsect2">
<a name="id-1.3.34.5.6.31.3.4.3"></a><h3>
<a name="boost.random.piecew_1_3_34_5_6_32_1_1_1construct-copy-destruct"></a><code class="computeroutput">piecewise_linear_distribution</code>
public
construct/copy/destruct</h3>
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<pre class="literallayout"><a name="id-1_3_34_5_6_32_1_1_1_7-bb"></a><span class="identifier">piecewise_linear_distribution</span><span class="special">(</span><span class="special">)</span><span class="special">;</span></pre>
<p>Creates a new <code class="computeroutput"><code class="computeroutput"><a class="link" href="piecew_1_3_34_5_6_32_1_1_1.html" title="Class template piecewise_linear_distribution">piecewise_linear_distribution</a></code></code> that produces values uniformly distributed in the range [0, 1). </p>
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<pre class="literallayout"><span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> IntervalIter<span class="special">,</span> <span class="keyword">typename</span> WeightIter<span class="special">></span>
<a name="id-1_3_34_5_6_32_1_1_1_8-bb"></a><span class="identifier">piecewise_linear_distribution</span><span class="special">(</span><span class="identifier">IntervalIter</span> first_interval<span class="special">,</span>
<span class="identifier">IntervalIter</span> last_interval<span class="special">,</span>
<span class="identifier">WeightIter</span> first_weight<span class="special">)</span><span class="special">;</span></pre>
<p>Constructs a <code class="computeroutput"><a class="link" href="piecew_1_3_34_5_6_32_1_1_1.html" title="Class template piecewise_linear_distribution">piecewise_linear_distribution</a></code> from two iterator ranges containing the interval boundaries and the weights at the boundaries. If there are fewer than two boundaries, then this is equivalent to the default constructor and creates a distribution that produces values uniformly distributed in the range [0, 1).</p>
<p>The values of the interval boundaries must be strictly increasing, and the number of weights must be equal to the number of interval boundaries. If there are extra weights, they are ignored.</p>
<p>For example,</p>
<pre class="programlisting"><span class="keyword">double</span> <span class="identifier">intervals</span><span class="special">[</span><span class="special">]</span> <span class="special">=</span> <span class="special">{</span> <span class="number">0</span><span class="special">.</span><span class="number">0</span><span class="special">,</span> <span class="number">1</span><span class="special">.</span><span class="number">0</span><span class="special">,</span> <span class="number">2</span><span class="special">.</span><span class="number">0</span> <span class="special">}</span><span class="special">;</span>
<span class="keyword">double</span> <span class="identifier">weights</span><span class="special">[</span><span class="special">]</span> <span class="special">=</span> <span class="special">{</span> <span class="number">0</span><span class="special">.</span><span class="number">0</span><span class="special">,</span> <span class="number">1</span><span class="special">.</span><span class="number">0</span><span class="special">,</span> <span class="number">0</span><span class="special">.</span><span class="number">0</span> <span class="special">}</span><span class="special">;</span>
<span class="identifier">piecewise_constant_distribution</span><span class="special"><</span><span class="special">></span> <span class="identifier">dist</span><span class="special">(</span>
<span class="special">&</span><span class="identifier">intervals</span><span class="special">[</span><span class="number">0</span><span class="special">]</span><span class="special">,</span> <span class="special">&</span><span class="identifier">intervals</span><span class="special">[</span><span class="number">0</span><span class="special">]</span> <span class="special">+</span> <span class="number">3</span><span class="special">,</span> <span class="special">&</span><span class="identifier">weights</span><span class="special">[</span><span class="number">0</span><span class="special">]</span><span class="special">)</span><span class="special">;</span>
</pre>
<p>produces a triangle distribution. </p>
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<pre class="literallayout"><span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> T<span class="special">,</span> <span class="keyword">typename</span> F<span class="special">></span>
<a name="id-1_3_34_5_6_32_1_1_1_9-bb"></a><span class="identifier">piecewise_linear_distribution</span><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">initializer_list</span><span class="special"><</span> <span class="identifier">T</span> <span class="special">></span> il<span class="special">,</span> <span class="identifier">F</span> f<span class="special">)</span><span class="special">;</span></pre>
<p>Constructs a <code class="computeroutput"><a class="link" href="piecew_1_3_34_5_6_32_1_1_1.html" title="Class template piecewise_linear_distribution">piecewise_linear_distribution</a></code> from an initializer_list containing the interval boundaries and a unary function specifying the weights. Each weight is determined by calling the function at the corresponding interval boundary.</p>
<p>If the initializer_list contains fewer than two elements, this is equivalent to the default constructor and the distribution will produce values uniformly distributed in the range [0, 1). </p>
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<pre class="literallayout"><span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> IntervalsRange<span class="special">,</span> <span class="keyword">typename</span> WeightsRange<span class="special">></span>
<a name="id-1_3_34_5_6_32_1_1_1_10-bb"></a><span class="identifier">piecewise_linear_distribution</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">IntervalsRange</span> <span class="special">&</span> intervals_arg<span class="special">,</span>
<span class="keyword">const</span> <span class="identifier">WeightsRange</span> <span class="special">&</span> weights_arg<span class="special">)</span><span class="special">;</span></pre>
<p>Constructs a <code class="computeroutput"><a class="link" href="piecew_1_3_34_5_6_32_1_1_1.html" title="Class template piecewise_linear_distribution">piecewise_linear_distribution</a></code> from Boost.Range ranges holding the interval boundaries and the weights. If there are fewer than two interval boundaries, this is equivalent to the default constructor and the distribution will produce values uniformly distributed in the range [0, 1). The number of weights must be equal to the number of interval boundaries. </p>
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<pre class="literallayout"><span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> F<span class="special">></span>
<a name="id-1_3_34_5_6_32_1_1_1_11-bb"></a><span class="identifier">piecewise_linear_distribution</span><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">size_t</span> nw<span class="special">,</span> <span class="identifier">RealType</span> xmin<span class="special">,</span> <span class="identifier">RealType</span> xmax<span class="special">,</span>
<span class="identifier">F</span> f<span class="special">)</span><span class="special">;</span></pre>
<p>Constructs a <code class="computeroutput"><a class="link" href="piecew_1_3_34_5_6_32_1_1_1.html" title="Class template piecewise_linear_distribution">piecewise_linear_distribution</a></code> that approximates a function. The range of the distribution is [xmin, xmax). This range is divided into nw equally sized intervals and the weights are found by calling the unary function f on the interval boundaries. </p>
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<pre class="literallayout"><span class="keyword">explicit</span> <a name="id-1_3_34_5_6_32_1_1_1_12-bb"></a><span class="identifier">piecewise_linear_distribution</span><span class="special">(</span><span class="keyword">const</span> <a class="link" href="piecew_1_3_34_5_6_32_1_1_1/param_type.html" title="Class param_type">param_type</a> <span class="special">&</span> param<span class="special">)</span><span class="special">;</span></pre>
<p>Constructs a <code class="computeroutput"><a class="link" href="piecew_1_3_34_5_6_32_1_1_1.html" title="Class template piecewise_linear_distribution">piecewise_linear_distribution</a></code> from its parameters. </p>
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</ol></div>
</div>
<div class="refsect2">
<a name="id-1.3.34.5.6.31.3.4.4"></a><h3>
<a name="id-1_3_34_5_6_32_1_1_1_6-bb"></a><code class="computeroutput">piecewise_linear_distribution</code> public member functions</h3>
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<pre class="literallayout"><span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> URNG<span class="special">></span> <span class="identifier">RealType</span> <a name="id-1_3_34_5_6_32_1_1_1_6_1-bb"></a><span class="keyword">operator</span><span class="special">(</span><span class="special">)</span><span class="special">(</span><span class="identifier">URNG</span> <span class="special">&</span> urng<span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>
<p>Returns a value distributed according to the parameters of the <code class="computeroutput"><a class="link" href="piecew_1_3_34_5_6_32_1_1_1.html" title="Class template piecewise_linear_distribution">piecewise_linear_distribution</a></code>. </p>
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<pre class="literallayout"><span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> URNG<span class="special">></span>
<span class="identifier">RealType</span> <a name="id-1_3_34_5_6_32_1_1_1_6_2-bb"></a><span class="keyword">operator</span><span class="special">(</span><span class="special">)</span><span class="special">(</span><span class="identifier">URNG</span> <span class="special">&</span> urng<span class="special">,</span> <span class="keyword">const</span> <a class="link" href="piecew_1_3_34_5_6_32_1_1_1/param_type.html" title="Class param_type">param_type</a> <span class="special">&</span> param<span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>
<p>Returns a value distributed according to the parameters specified by param. </p>
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<pre class="literallayout"><span class="identifier">result_type</span> <a name="id-1_3_34_5_6_32_1_1_1_6_3-bb"></a><span class="identifier">min</span><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>
<p>Returns the smallest value that the distribution can produce. </p>
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<pre class="literallayout"><span class="identifier">result_type</span> <a name="id-1_3_34_5_6_32_1_1_1_6_4-bb"></a><span class="identifier">max</span><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>
<p>Returns the largest value that the distribution can produce. </p>
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<pre class="literallayout"><span class="identifier">std</span><span class="special">::</span><span class="identifier">vector</span><span class="special"><</span> <span class="identifier">RealType</span> <span class="special">></span> <a name="id-1_3_34_5_6_32_1_1_1_6_5-bb"></a><span class="identifier">densities</span><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>
<p>Returns a vector containing the probability densities at the interval boundaries. </p>
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<pre class="literallayout"><span class="identifier">std</span><span class="special">::</span><span class="identifier">vector</span><span class="special"><</span> <span class="identifier">RealType</span> <span class="special">></span> <a name="id-1_3_34_5_6_32_1_1_1_6_6-bb"></a><span class="identifier">intervals</span><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>
<p>Returns a vector containing the interval boundaries. </p>
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<pre class="literallayout"><a class="link" href="piecew_1_3_34_5_6_32_1_1_1/param_type.html" title="Class param_type">param_type</a> <a name="id-1_3_34_5_6_32_1_1_1_6_7-bb"></a><span class="identifier">param</span><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>
<p>Returns the parameters of the distribution. </p>
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<pre class="literallayout"><span class="keyword">void</span> <a name="id-1_3_34_5_6_32_1_1_1_6_8-bb"></a><span class="identifier">param</span><span class="special">(</span><span class="keyword">const</span> <a class="link" href="piecew_1_3_34_5_6_32_1_1_1/param_type.html" title="Class param_type">param_type</a> <span class="special">&</span> param<span class="special">)</span><span class="special">;</span></pre>
<p>Sets the parameters of the distribution. </p>
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<pre class="literallayout"><span class="keyword">void</span> <a name="id-1_3_34_5_6_32_1_1_1_6_9-bb"></a><span class="identifier">reset</span><span class="special">(</span><span class="special">)</span><span class="special">;</span></pre>
<p>Effects: Subsequent uses of the distribution do not depend on values produced by any engine prior to invoking reset. </p>
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</ol></div>
</div>
<div class="refsect2">
<a name="id-1.3.34.5.6.31.3.4.5"></a><h3>
<a name="id-1_3_34_5_6_32_1_1_1_13-bb"></a><code class="computeroutput">piecewise_linear_distribution</code> friend functions</h3>
<div class="orderedlist"><ol class="orderedlist" type="1">
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<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="id-1_3_34_5_6_32_1_1_1_13_1-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="piecew_1_3_34_5_6_32_1_1_1.html" title="Class template piecewise_linear_distribution">piecewise_linear_distribution</a> <span class="special">&</span> pld<span class="special">)</span><span class="special">;</span></pre>
<p>Writes a distribution to a <code class="computeroutput">std::ostream</code>. </p>
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<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="id-1_3_34_5_6_32_1_1_1_13_2-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="piecew_1_3_34_5_6_32_1_1_1.html" title="Class template piecewise_linear_distribution">piecewise_linear_distribution</a> <span class="special">&</span> pld<span class="special">)</span><span class="special">;</span></pre>
<p>Reads a distribution from a <code class="computeroutput">std::istream</code> </p>
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<pre class="literallayout"><span class="keyword">friend</span> <span class="keyword">bool</span> <a name="id-1_3_34_5_6_32_1_1_1_13_3-bb"></a><span class="keyword">operator</span><span class="special">==</span><span class="special">(</span><span class="keyword">const</span> <a class="link" href="piecew_1_3_34_5_6_32_1_1_1.html" title="Class template piecewise_linear_distribution">piecewise_linear_distribution</a> <span class="special">&</span> lhs<span class="special">,</span>
<span class="keyword">const</span> <a class="link" href="piecew_1_3_34_5_6_32_1_1_1.html" title="Class template piecewise_linear_distribution">piecewise_linear_distribution</a> <span class="special">&</span> rhs<span class="special">)</span><span class="special">;</span></pre>
<p>Returns true if the two distributions will return the same sequence of values, when passed equal generators. </p>
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<pre class="literallayout"><span class="keyword">friend</span> <span class="keyword">bool</span> <a name="id-1_3_34_5_6_32_1_1_1_13_4-bb"></a><span class="keyword">operator</span><span class="special">!=</span><span class="special">(</span><span class="keyword">const</span> <a class="link" href="piecew_1_3_34_5_6_32_1_1_1.html" title="Class template piecewise_linear_distribution">piecewise_linear_distribution</a> <span class="special">&</span> lhs<span class="special">,</span>
<span class="keyword">const</span> <a class="link" href="piecew_1_3_34_5_6_32_1_1_1.html" title="Class template piecewise_linear_distribution">piecewise_linear_distribution</a> <span class="special">&</span> rhs<span class="special">)</span><span class="special">;</span></pre>
<p>Returns true if the two distributions may return different sequences of values, when passed equal generators. </p>
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