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<title>std::is_eq, std::is_neq, std::is_lt, std::is_gt, std::is_lteq, std::is_gteq</title>
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<h1 id="firstHeading" class="firstHeading"><span style="font-size:0.7em; line-height:130%">std::</span>is_eq, <span style="font-size:0.7em; line-height:130%">std::</span>is_neq, <span style="font-size:0.7em; line-height:130%">std::</span>is_lt, <span style="font-size:0.7em; line-height:130%">std::</span>is_gt, <span style="font-size:0.7em; line-height:130%">std::</span>is_lteq, <span style="font-size:0.7em; line-height:130%">std::</span>is_gteq</h1>
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<div id="contentSub"><span class="subpages">&lt; <a href="cpp.html">cpp</a>&lrm; | <a href="cpp-utility.html">utility</a></span></div>
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<div>&#23450;&#20041;&#20110;&#22836;&#25991;&#20214; <code><a href="cpp-header-compare.html">&lt;compare&gt;</a></code></div>
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<div><span class="mw-geshi cpp source-cpp"><span class="kw4">constexpr</span> <span class="kw4">bool</span> is_eq<span class="br0">(</span>std<span class="sy4">::</span><span class="me2">partial_ordering</span> cmp<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span></span></div>
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<td>(1)</td>
<td><span class="t-mark-rev t-since-cxx20">(C++20 &#36215;)</span></td>
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<div><span class="mw-geshi cpp source-cpp"><span class="kw4">constexpr</span> <span class="kw4">bool</span> is_neq<span class="br0">(</span>std<span class="sy4">::</span><span class="me2">partial_ordering</span> cmp<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span></span></div>
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<td>(2)</td>
<td><span class="t-mark-rev t-since-cxx20">(C++20 &#36215;)</span></td>
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<div><span class="mw-geshi cpp source-cpp"><span class="kw4">constexpr</span> <span class="kw4">bool</span> is_lt<span class="br0">(</span>std<span class="sy4">::</span><span class="me2">partial_ordering</span> cmp<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span></span></div>
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<td>(3)</td>
<td><span class="t-mark-rev t-since-cxx20">(C++20 &#36215;)</span></td>
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<div><span class="mw-geshi cpp source-cpp"><span class="kw4">constexpr</span> <span class="kw4">bool</span> is_lteq<span class="br0">(</span>std<span class="sy4">::</span><span class="me2">partial_ordering</span> cmp<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span></span></div>
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<td>(4)</td>
<td><span class="t-mark-rev t-since-cxx20">(C++20 &#36215;)</span></td>
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<div><span class="mw-geshi cpp source-cpp"><span class="kw4">constexpr</span> <span class="kw4">bool</span> is_gt<span class="br0">(</span>std<span class="sy4">::</span><span class="me2">partial_ordering</span> cmp<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span></span></div>
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<td>(5)</td>
<td><span class="t-mark-rev t-since-cxx20">(C++20 &#36215;)</span></td>
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<div><span class="mw-geshi cpp source-cpp"><span class="kw4">constexpr</span> <span class="kw4">bool</span> is_gteq<span class="br0">(</span>std<span class="sy4">::</span><span class="me2">partial_ordering</span> cmp<span class="br0">)</span> <span class="kw1">noexcept</span></span></div>
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<td>(6)</td>
<td><span class="t-mark-rev t-since-cxx20">(C++20 &#36215;)</span></td>
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<p>&#36825;&#20123;&#20989;&#25968;&#21462;&#19977;&#36335;&#27604;&#36739;&#30340;&#32467;&#26524;&#65292;&#24182;&#36716;&#25442;&#20026;&#20845;&#20010;&#20851;&#31995;&#36816;&#31639;&#31526;&#30340;&#32467;&#26524;&#20043;&#19968;&#12290;</p>
<p>&#20855;&#20307;&#32780;&#35328;&#65292;&#36825;&#20123;&#20989;&#25968;&#36820;&#22238;</p>
<div class="t-li1"><span class="t-li">1)</span> <span class="t-c"><span class="mw-geshi cpp source-cpp">cmp <span class="sy1">==</span> <span class="nu0">0</span></span></span></div>
<div class="t-li1"><span class="t-li">2)</span> <span class="t-c"><span class="mw-geshi cpp source-cpp">cmp <span class="sy3">!</span><span class="sy1">=</span> <span class="nu0">0</span></span></span></div>
<div class="t-li1"><span class="t-li">3)</span> <span class="t-c"><span class="mw-geshi cpp source-cpp">cmp <span class="sy1">&lt;</span> <span class="nu0">0</span></span></span></div>
<div class="t-li1"><span class="t-li">4)</span> <span class="t-c"><span class="mw-geshi cpp source-cpp">cmp <span class="sy1">&lt;=</span> <span class="nu0">0</span></span></span></div>
<div class="t-li1"><span class="t-li">5)</span> <span class="t-c"><span class="mw-geshi cpp source-cpp">cmp <span class="sy1">&gt;</span> <span class="nu0">0</span></span></span></div>
<div class="t-li1"><span class="t-li">6)</span> <span class="t-c"><span class="mw-geshi cpp source-cpp">cmp <span class="sy1">&gt;=</span> <span class="nu0">0</span></span></span></div>
<h3><span class="mw-headline" id=".E5.8F.82.E6.95.B0">&#21442;&#25968;</span></h3>
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<td>cmp</td>
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<td>&#19977;&#36335;&#27604;&#36739;&#32467;&#26524;</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>&#23545;&#24212;&#27604;&#36739;&#20851;&#31995;&#30340; <span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="kw4">bool</span></span></span> &#32467;&#26524;</p>
<h3><span class="mw-headline" id=".E7.A4.BA.E4.BE.8B">&#31034;&#20363;</span></h3>
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<td class="mbox-text" style="">&#26412;&#33410;&#26410;&#23436;&#25104;<br />
&#21407;&#22240;&#65306;&#26242;&#26080;&#31034;&#20363;</td>
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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-utility-compare-partial_ordering.html"><span class="t-lines"><span>partial_ordering</span></span></a></div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx20">(C++20)</span></span></span></div>
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<td>&#19977;&#36335;&#27604;&#36739;&#30340;&#32467;&#26524;&#31867;&#22411;&#65292;&#25903;&#25345;&#25152;&#26377; 6 &#31181;&#36816;&#31639;&#31526;&#65292;&#19981;&#21487;&#26367;&#25442;&#65292;&#24182;&#20801;&#35768;&#19981;&#21487;&#27604;&#36739;&#30340;&#20540;<br />
<span class="t-mark">(&#31867;)</span></td>
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