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<h1 id="firstHeading" class="firstHeading"><span style="font-size:0.7em; line-height:130%">std::</span>atomic_flag_clear, <span style="font-size:0.7em; line-height:130%">std::</span>atomic_flag_clear_explicit</h1>
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<div id="contentSub"><span class="subpages">&lt; <a href="cpp.html">cpp</a>&lrm; | <a href="cpp-atomic.html">atomic</a></span></div>
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<div>&#23450;&#20041;&#20110;&#22836;&#25991;&#20214; <code><a href="cpp-header-atomic.html">&lt;atomic&gt;</a></code></div>
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<td rowspan="142">(1)</td>
<td rowspan="142"><span class="t-mark-rev t-since-cxx11">(C++11 &#36215;)</span></td>
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<div><span class="mw-geshi cpp source-cpp"><span class="kw4">void</span> atomic_flag_clear<span class="br0">(</span> <span class="kw4">volatile</span> <a href="cpp-atomic-atomic_flag.html"><span class="kw2088">std::<span class="me2">atomic_flag</span></span></a><span class="sy2">*</span> p <span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span></span></div>
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<div><span class="mw-geshi cpp source-cpp"><span class="kw4">void</span> atomic_flag_clear<span class="br0">(</span> <a href="cpp-atomic-atomic_flag.html"><span class="kw2088">std::<span class="me2">atomic_flag</span></span></a><span class="sy2">*</span> p <span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span></span></div>
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<td rowspan="142">(2)</td>
<td rowspan="142"><span class="t-mark-rev t-since-cxx11">(C++11 &#36215;)</span></td>
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<div><span class="mw-geshi cpp source-cpp"><span class="kw4">void</span> atomic_flag_clear_explicit<span class="br0">(</span> <span class="kw4">volatile</span> <a href="cpp-atomic-atomic_flag.html"><span class="kw2088">std::<span class="me2">atomic_flag</span></span></a><span class="sy2">*</span> p,<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;<a href="cpp-atomic-memory_order.html"><span class="kw2092">std::<span class="me2">memory_order</span></span></a> order <span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span></span></div>
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<div><span class="mw-geshi cpp source-cpp"><span class="kw4">void</span> atomic_flag_clear_explicit<span class="br0">(</span> <a href="cpp-atomic-atomic_flag.html"><span class="kw2088">std::<span class="me2">atomic_flag</span></span></a><span class="sy2">*</span> p,<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;<a href="cpp-atomic-memory_order.html"><span class="kw2092">std::<span class="me2">memory_order</span></span></a> order <span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span></span></div>
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<p>&#21407;&#23376;&#22320;&#26356;&#25913; <code>p</code> &#25152;&#25351;&#21521;&#30340; <span class="t-lc"><a href="cpp-atomic-atomic_flag.html">std::atomic_flag</a></span> &#20026;&#28165;&#38500;&#65288; <span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="kw2">false</span></span></span> &#65289;&#12290;</p>
<h3><span class="mw-headline" id=".E5.8F.82.E6.95.B0">&#21442;&#25968;</span></h3>
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<td>p</td>
<td>-</td>
<td>&#25351;&#21521;&#35201;&#35775;&#38382;&#30340; <span class="t-lc"><a href="cpp-atomic-atomic_flag.html">std::atomic_flag</a></span> &#30340;&#25351;&#38024;</td>
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<td>order</td>
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<td>&#27492;&#25805;&#20316;&#25152;&#29992;&#30340;&#20869;&#23384;&#21516;&#27493;&#39034;&#24207;&#65292;&#21482;&#23481;&#35768; <span class="t-lc"><a href="cpp-atomic-memory_order.html">std::memory_order_relaxed</a></span> &#12289; <span class="t-lc"><a href="cpp-atomic-memory_order.html">std::memory_order_release</a></span> &#25110; <span class="t-lc"><a href="cpp-atomic-memory_order.html">std::memory_order_seq_cst</a></span> &#12290;</td>
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<h3><span class="mw-headline" id=".E8.BF.94.E5.9B.9E.E5.80.BC">&#36820;&#22238;&#20540;</span></h3>
<p>&#26080;&#12290;</p>
<h3><span class="mw-headline" id=".E5.8F.AF.E8.83.BD.E7.9A.84.E5.AE.9E.E7.8E.B0">&#21487;&#33021;&#30340;&#23454;&#29616;</span></h3>
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<pre class="de1"><span class="kw4">void</span> atomic_flag_clear<span class="br0">(</span><span class="kw4">volatile</span> <a href="cpp-atomic-atomic_flag.html"><span class="kw2088">std::<span class="me2">atomic_flag</span></span></a><span class="sy2">*</span> p<span class="br0">)</span>
<span class="br0">{</span>
p<span class="sy2">-</span><span class="sy1">&gt;</span>clear<span class="br0">(</span><span class="br0">)</span><span class="sy4">;</span>
<span class="br0">}</span></pre></div>
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<th>&#29256;&#26412;&#20108;</th>
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<pre class="de1"><span class="kw4">void</span> atomic_flag_clear<span class="br0">(</span><a href="cpp-atomic-atomic_flag.html"><span class="kw2088">std::<span class="me2">atomic_flag</span></span></a><span class="sy2">*</span> p<span class="br0">)</span>
<span class="br0">{</span>
p<span class="sy2">-</span><span class="sy1">&gt;</span>clear<span class="br0">(</span><span class="br0">)</span><span class="sy4">;</span>
<span class="br0">}</span></pre></div>
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<th>&#29256;&#26412;&#19977;</th>
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<pre class="de1"><span class="kw4">void</span> atomic_flag_clear_explicit<span class="br0">(</span><span class="kw4">volatile</span> <a href="cpp-atomic-atomic_flag.html"><span class="kw2088">std::<span class="me2">atomic_flag</span></span></a><span class="sy2">*</span> p,
<a href="cpp-atomic-memory_order.html"><span class="kw2092">std::<span class="me2">memory_order</span></span></a> order<span class="br0">)</span>
<span class="br0">{</span>
p<span class="sy2">-</span><span class="sy1">&gt;</span>clear<span class="br0">(</span>order<span class="br0">)</span><span class="sy4">;</span>
<span class="br0">}</span></pre></div>
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<th>&#29256;&#26412;&#22235;</th>
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<div class="cpp source-cpp">
<pre class="de1"><span class="kw4">void</span> atomic_flag_clear_explicit<span class="br0">(</span><a href="cpp-atomic-atomic_flag.html"><span class="kw2088">std::<span class="me2">atomic_flag</span></span></a><span class="sy2">*</span> p,
<a href="cpp-atomic-memory_order.html"><span class="kw2092">std::<span class="me2">memory_order</span></span></a> order<span class="br0">)</span>
<span class="br0">{</span>
p<span class="sy2">-</span><span class="sy1">&gt;</span>clear<span class="br0">(</span>order<span class="br0">)</span><span class="sy4">;</span>
<span class="br0">}</span></pre></div>
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<h3><span class="mw-headline" id=".E5.8F.82.E9.98.85">&#21442;&#38405;</span></h3>
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<div><a href="cpp-atomic-atomic_flag.html"><span class="t-lines"><span>atomic_flag</span></span></a></div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div>
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<td>&#20813;&#38145;&#30340;&#24067;&#23572;&#21407;&#23376;&#31867;&#22411;<br />
<span class="t-mark">(&#31867;)</span></td>
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<div class="t-dsc-member-div">
<div><a href="cpp-atomic-atomic_flag_test_and_set.html"><span class="t-lines"><span>atomic_flag_test_and_set</span><span>atomic_flag_test_and_set_explicit</span></span></a></div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div>
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<td>&#21407;&#23376;&#22320;&#35774;&#32622;&#26631;&#24535;&#20026; <span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="kw2">true</span></span></span> &#24182;&#36820;&#22238;&#20854;&#20808;&#21069;&#20540;<br />
<span class="t-mark">(&#20989;&#25968;)</span></td>
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<div><a href="cpp-atomic-memory_order.html"><span class="t-lines"><span>memory_order</span></span></a></div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div>
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<td>&#20026;&#32473;&#23450;&#30340;&#21407;&#23376;&#25805;&#20316;&#23450;&#20041;&#20869;&#23384;&#39034;&#24207;&#32422;&#26463;<br />
<span class="t-mark">(&#26522;&#20030;)</span></td>
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