128 lines
7.1 KiB
HTML
128 lines
7.1 KiB
HTML
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<title>std::piecewise_linear_distribution<RealType>::piecewise_linear_distribution</title>
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<h1 id="firstHeading" class="firstHeading"><span style="font-size:0.7em; line-height:130%">std::piecewise_linear_distribution<RealType>::</span>piecewise_linear_distribution</h1>
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<div id="contentSub"><span class="subpages">< <a href="cpp.html">cpp</a>‎ | <a href="cpp-numeric.html">numeric</a>‎ | <a href="cpp-numeric-random.html">random</a>‎ | <a href="cpp-numeric-random-piecewise_linear_distribution.html">piecewise linear distribution</a></span></div>
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<div><span class="mw-geshi cpp source-cpp">piecewise_linear_distribution<span class="br0">(</span><span class="br0">)</span><span class="sy4">;</span></span></div>
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<td>(1)</td>
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<td><span class="t-mark-rev t-since-cxx11">(C++11 起)</span></td>
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<div><span class="mw-geshi cpp source-cpp"><span class="kw1">template</span><span class="sy1"><</span> <span class="kw1">class</span> InputIt1, <span class="kw1">class</span> InputIt2 <span class="sy1">></span><br /></span>
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<p>piecewise_linear_distribution<span class="br0">(</span> InputIt1 first_i, InputIt1 last_i,<br /></p>
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InputIt2 first_w <span class="br0">)</span><span class="sy4">;</span></div>
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<td>(2)</td>
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<td><span class="t-mark-rev t-since-cxx11">(C++11 起)</span></td>
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<div><span class="mw-geshi cpp source-cpp"><span class="kw1">template</span><span class="sy1"><</span> <span class="kw1">class</span> UnaryOperation <span class="sy1">></span><br /></span>
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<p>piecewise_linear_distribution<span class="br0">(</span> <a href="cpp-utility-initializer_list.html"><span class="kw960">std::<span class="me2">initializer_list</span></span></a><span class="sy1"><</span>RealType<span class="sy1">></span> ilist,<br /></p>
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UnaryOperation fw <span class="br0">)</span><span class="sy4">;</span></div>
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<td>(3)</td>
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<td><span class="t-mark-rev t-since-cxx11">(C++11 起)</span></td>
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<div><span class="mw-geshi cpp source-cpp"><span class="kw1">template</span><span class="sy1"><</span> <span class="kw1">class</span> UnaryOperation <span class="sy1">></span><br /></span>
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<p>piecewise_linear_distribution<span class="br0">(</span> <a href="cpp-types-size_t.html"><span class="kw100">std::<span class="me2">size_t</span></span></a> nw,<br />
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RealType xmin, RealType xmax,<br /></p>
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UnaryOperation fw <span class="br0">)</span><span class="sy4">;</span></div>
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<td>(4)</td>
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<td><span class="t-mark-rev t-since-cxx11">(C++11 起)</span></td>
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<div><span class="mw-geshi cpp source-cpp"><span class="kw1">explicit</span> piecewise_linear_distribution<span class="br0">(</span> <span class="kw4">const</span> param_type<span class="sy3">&</span> parm <span class="br0">)</span><span class="sy4">;</span></span></div>
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<td>(5)</td>
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<td><span class="t-mark-rev t-since-cxx11">(C++11 起)</span></td>
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<td></td>
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<td></td>
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<td></td>
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<p>构造新的 piecewise_linear_distribution 对象。</p>
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<div class="t-li1"><span class="t-li">1)</span> 构造分布对象，有 <i>n</i> = 1 、 <i>ρ0</i> = 1 、 <i>b0</i> = 0 且 <i>b1</i> = 1 。</div>
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<div class="t-li1"><span class="t-li">2)</span> 从区间序列 <code>[first_i, last_i)</code> 上的迭代器和始于 <code>first_w</code> 的匹配权重序列构造分布对象。</div>
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<div class="t-li1"><span class="t-li">3)</span> 构造分布对象，其中区间取自 initializer_list <code>ilist</code> ，而权重以函数 <code>fw</code> 计算。</div>
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<div class="t-li1"><span class="t-li">4)</span> 构造分布对象，拥有在 <code>[xmin, xmax]</code> 上均匀分布的 <code>nw</code> 个区间。</div>
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<div class="t-li1"><span class="t-li">5)</span> 构造以参数 <code>param</code> 初始化的对象。</div>
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<h3><span class="mw-headline" id=".E5.8F.82.E6.95.B0">参数</span></h3>
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<table class="t-par-begin">
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<tr class="t-par">
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<td>first_i</td>
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<td>-</td>
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<td>初始化为指向区间序列起始的迭代器</td>
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</tr>
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<tr class="t-par">
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<td>last_i</td>
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<td>-</td>
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<td>初始化为指向区间序列末尾尾后一位置的迭代器</td>
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<tr class="t-par">
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<td>first_w</td>
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<td>-</td>
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<td>初始化为指向密度（权重）序列起始的迭代器</td>
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<tr class="t-par">
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<td>ilist_i</td>
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<td>-</td>
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<td>产出区间序列的 initializer_list</td>
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<td>fw</td>
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<td>-</td>
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<td>产出密度的 double(double) 函数</td>
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<tr class="t-par">
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<td>nw</td>
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<td>-</td>
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<td>密度数量</td>
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<tr class="t-par">
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<td>xmin</td>
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<td>-</td>
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<td>区间序列下界</td>
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<td>xmax</td>
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<td>-</td>
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<td>区间序列上界</td>
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<tr class="t-par">
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<td>parm</td>
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<td>-</td>
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<td>分布参数集</td>
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