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74 lines
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<title>std::chrono::hh_mm_ss<Duration>::hh_mm_ss</title>
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<h1 id="firstHeading" class="firstHeading"><span style="font-size:0.7em; line-height:130%">std::chrono::hh_mm_ss<Duration>::</span>hh_mm_ss</h1>
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<div id="contentSub"><span class="subpages">< <a href="cpp.html">cpp</a>‎ | <a href="cpp-chrono.html">chrono</a>‎ | <a href="cpp-chrono-hh_mm_ss.html">hh mm ss</a></span></div>
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<div><span class="mw-geshi cpp source-cpp"><span class="kw4">constexpr</span> hh_mm_ss<span class="br0">(</span><span class="br0">)</span> <span class="kw1">noexcept</span> <span class="sy4">:</span> hh_mm_ss<span class="br0">{</span>Duration<span class="sy4">::</span><span class="me2">zero</span><span class="br0">(</span><span class="br0">)</span><span class="br0">}</span> <span class="br0">{</span><span class="br0">}</span></span></div>
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<td>(1)</td>
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<div><span class="mw-geshi cpp source-cpp"><span class="kw1">explicit</span> <span class="kw4">constexpr</span> hh_mm_ss<span class="br0">(</span> Duration d <span class="br0">)</span><span class="sy4">;</span></span></div>
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<td>(2)</td>
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<p>构造 <code>hh_mm_ss</code> 对象。</p>
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<div class="t-li1"><span class="t-li">1)</span> 构造对应 <code>Duration::zero()</code> 的 <code>hh_mm_ss</code> 对象。</div>
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<div class="t-li1"><span class="t-li">2)</span> 构造对应 <code>d</code> 的 <code>hh_mm_ss</code> 对象：
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<ul>
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<li><span class="t-lc">is_negative()</span> 返回 <span class="t-c"><span class="mw-geshi cpp source-cpp">d <span class="sy1"><</span> Duration<span class="sy4">::</span><span class="me2">zero</span><span class="br0">(</span><span class="br0">)</span></span></span> 。</li>
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<li><span class="t-lc">hours()</span> 返回 <span class="t-c"><span class="mw-geshi cpp source-cpp"><a href="cpp-chrono-duration-duration_cast.html"><span class="kw1000">std::<span class="me2">chrono</span><span class="sy4">::</span><span class="me2">duration_cast</span></span></a><span class="sy1"><</span><a href="cpp-chrono-duration.html"><span class="kw999">std::<span class="me2">chrono</span><span class="sy4">::</span><span class="me2">hours</span></span></a><span class="sy1">></span><span class="br0">(</span>abs<span class="br0">(</span>d<span class="br0">)</span><span class="br0">)</span></span></span> 。</li>
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<li><span class="t-lc">minutes()</span> 返回 <span class="t-c"><span class="mw-geshi cpp source-cpp"><a href="cpp-chrono-duration-duration_cast.html"><span class="kw1000">std::<span class="me2">chrono</span><span class="sy4">::</span><span class="me2">duration_cast</span></span></a><span class="sy1"><</span><a href="cpp-chrono-duration.html"><span class="kw998">std::<span class="me2">chrono</span><span class="sy4">::</span><span class="me2">minutes</span></span></a><span class="sy1">></span><span class="br0">(</span>abs<span class="br0">(</span>d<span class="br0">)</span> <span class="sy2">-</span> hours<span class="br0">(</span><span class="br0">)</span><span class="br0">)</span></span></span> 。</li>
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<li><span class="t-lc">seconds()</span> 返回<br />
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<span class="t-c"><span class="mw-geshi cpp source-cpp"><a href="cpp-chrono-duration-duration_cast.html"><span class="kw1000">std::<span class="me2">chrono</span><span class="sy4">::</span><span class="me2">duration_cast</span></span></a><span class="sy1"><</span><a href="cpp-chrono-duration.html"><span class="kw997">std::<span class="me2">chrono</span><span class="sy4">::</span><span class="me2">seconds</span></span></a><span class="sy1">></span><span class="br0">(</span>abs<span class="br0">(</span>d<span class="br0">)</span> <span class="sy2">-</span> hours<span class="br0">(</span><span class="br0">)</span> <span class="sy2">-</span> minutes<span class="br0">(</span><span class="br0">)</span><span class="br0">)</span></span></span> 。</li>
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<li>若 <span class="t-c"><span class="mw-geshi cpp source-cpp">std<span class="sy4">::</span><span class="me2">chrono</span><span class="sy4">::</span><span class="me2">treat_as_floating_point_v</span><span class="sy1"><</span>precision<span class="sy4">::</span><span class="me2">rep</span><span class="sy1">></span></span></span> 为 <span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="kw2">true</span></span></span> 则 <span class="t-lc">subseconds()</span> 返回 <span class="t-c"><span class="mw-geshi cpp source-cpp">abs<span class="br0">(</span>d<span class="br0">)</span> <span class="sy2">-</span> hours<span class="br0">(</span><span class="br0">)</span> <span class="sy2">-</span> minutes<span class="br0">(</span><span class="br0">)</span> <span class="sy2">-</span> seconds<span class="br0">(</span><span class="br0">)</span></span></span> ；否则返回 <span class="t-c"><span class="mw-geshi cpp source-cpp"><a href="cpp-chrono-duration-duration_cast.html"><span class="kw1000">std::<span class="me2">chrono</span><span class="sy4">::</span><span class="me2">duration_cast</span></span></a><span class="sy1"><</span>precision<span class="sy1">></span><span class="br0">(</span>abs<span class="br0">(</span>d<span class="br0">)</span> <span class="sy2">-</span> hours<span class="br0">(</span><span class="br0">)</span> <span class="sy2">-</span> minutes<span class="br0">(</span><span class="br0">)</span> <span class="sy2">-</span> seconds<span class="br0">(</span><span class="br0">)</span><span class="br0">)</span></span></span> 。</li>
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<h3><span class="mw-headline" id=".E5.8F.82.E6.95.B0">参数</span></h3>
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<td>d</td>
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<td>要拆分的时长。</td>
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<h3><span class="mw-headline" id=".E7.A4.BA.E4.BE.8B">示例</span></h3>
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<td class="mbox-text" style="">本节未完成<br />
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原因：暂无示例</td>
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