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404 lines
21 KiB
HTML
<!DOCTYPE html>
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<html lang="zh" dir="ltr" class="client-nojs" xmlns="http://www.w3.org/1999/xhtml" xml:lang="zh">
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<head><meta http-equiv="x-ua-compatible" content="ie=edge">
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
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<title>数据并行向量库</title>
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<link rel="stylesheet" href="site_modules.css" />
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<body class="mediawiki ltr sitedir-ltr ns-0 ns-subject page-cpp_experimental_simd skin-cppreference2 action-view cpp-navbar">
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<div id="cpp-content-base">
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<div id="content"><a id="top"></a>
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<h1 id="firstHeading" class="firstHeading">数据并行向量库</h1>
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<div id="bodyContent">
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<div id="contentSub"><span class="subpages">< <a href="cpp.html">cpp</a>‎ | <a href="cpp-experimental.html">experimental</a></span></div>
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<div id="mw-content-text" lang="zh" dir="ltr" class="mw-content-ltr" xml:lang="zh">
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<table class="t-dsc-begin">
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<div>定义于头文件 <code><a href="https://zh.cppreference.com/mwiki/index.php?title=cpp/header/experimental/simd&action=edit&redlink=1" class="new" title="cpp/header/experimental/simd（页面不存在）"><experimental/simd></a></code></div>
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</table>
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<h3><span class="mw-headline" id=".E4.B8.BB.E7.B1.BB">主类</span></h3>
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<table class="t-dsc-begin">
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<td>
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<div class="t-dsc-member-div">
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<div><a href="cpp-experimental-simd-simd.html"><span class="t-lines"><span>simd</span></span></a></div>
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<div><span class="t-lines"><span><span class="t-mark-rev t-since-parallelism-ts-2 t-mark-ts">(并行 TS v2)</span></span></span></div>
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</div>
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</td>
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<td>数据并行向量类型<br />
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<span class="t-mark">(类模板)</span></td>
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</tr>
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<tr class="t-dsc">
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<td>
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<div><a href="cpp-experimental-simd-simd_mask.html"><span class="t-lines"><span>simd_mask</span></span></a></div>
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<div><span class="t-lines"><span><span class="t-mark-rev t-since-parallelism-ts-2 t-mark-ts">(并行 TS v2)</span></span></span></div>
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</div>
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</td>
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<td>元素类型为 bool 的数据并行类型<br />
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<span class="t-mark">(类模板)</span></td>
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</tr>
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</table>
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<h3><span class="mw-headline" id="ABI_.E6.A0.87.E7.AD.BE">ABI 标签</span></h3>
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<table class="t-dsc-begin">
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<td colspan="2">
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<div>定义于命名空间 <code>std::experimental::simd_abi</code></div>
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</td>
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</tr>
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<tr class="t-dsc">
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<td>
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<div class="t-dsc-member-div">
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<div><a href="cpp-experimental-simd-scalar.html"><span class="t-lines"><span>scalar</span></span></a></div>
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<div><span class="t-lines"><span><span class="t-mark-rev t-since-parallelism-ts-2 t-mark-ts">(并行 TS v2)</span></span></span></div>
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</div>
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</td>
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<td>存储单个元素的标签类型<br />
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<span class="t-mark">(typedef)</span></td>
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</tr>
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<tr class="t-dsc">
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<td>
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<div class="t-dsc-member-div">
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<div><a href="cpp-experimental-simd-fixed_size.html"><span class="t-lines"><span>fixed_size</span></span></a></div>
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<div><span class="t-lines"><span><span class="t-mark-rev t-since-parallelism-ts-2 t-mark-ts">(并行 TS v2)</span></span></span></div>
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</div>
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</td>
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<td>存储指定数量元素的标签类型<br />
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<span class="t-mark">(别名模板)</span></td>
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</tr>
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<tr class="t-dsc">
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<td>
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<div class="t-dsc-member-div">
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<div><a href="cpp-experimental-simd-compatible.html"><span class="t-lines"><span>compatible</span></span></a></div>
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<div><span class="t-lines"><span><span class="t-mark-rev t-since-parallelism-ts-2 t-mark-ts">(并行 TS v2)</span></span></span></div>
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</div>
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</td>
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<td>确保 ABI 兼容性的标签类型<br />
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<span class="t-mark">(别名模板)</span></td>
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</tr>
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<tr class="t-dsc">
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<td>
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<div class="t-dsc-member-div">
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<div><a href="cpp-experimental-simd-native.html"><span class="t-lines"><span>native</span></span></a></div>
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<div><span class="t-lines"><span><span class="t-mark-rev t-since-parallelism-ts-2 t-mark-ts">(并行 TS v2)</span></span></span></div>
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</div>
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</td>
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<td>最有效率的标签类型<br />
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<span class="t-mark">(别名模板)</span></td>
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</tr>
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<tr class="t-dsc">
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<td>
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<div class="t-dsc-member-div">
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<div><a href="cpp-experimental-simd-max_fixed_size.html"><span class="t-lines"><span>max_fixed_size</span></span></a></div>
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<div><span class="t-lines"><span><span class="t-mark-rev t-since-parallelism-ts-2 t-mark-ts">(并行 TS v2)</span></span></span></div>
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</div>
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</td>
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<td>保证支持的固定最大元素数<br />
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<span class="t-mark">(常量)</span></td>
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</tr>
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<tr class="t-dsc">
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<td>
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<div class="t-dsc-member-div">
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<div><a href="cpp-experimental-simd-deduce.html"><span class="t-lines"><span>deduce</span><span>deduce_t</span></span></a></div>
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<div><span class="t-lines"><span><span class="t-mark-rev t-since-parallelism-ts-2 t-mark-ts">(并行 TS v2)</span></span></span></div>
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</div>
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</td>
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<td>获得给定的元素类型及元素数的 ABI 类型<br />
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<span class="t-mark">(类模板)</span></td>
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</tr>
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</table>
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<h3><span class="mw-headline" id=".E5.AF.B9.E9.BD.90.E6.A0.87.E7.AD.BE">对齐标签</span></h3>
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<table class="t-dsc-begin">
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<tr class="t-dsc">
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<td>
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<div class="t-dsc-member-div">
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<div><a href="cpp-experimental-simd-element_aligned.html"><span class="t-lines"><span>element_aligned_tag</span> <span>element_aligned</span></span></a></div>
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<div><span class="t-lines"><span><span class="t-mark-rev t-since-parallelism-ts-2 t-mark-ts">(并行 TS v2)</span></span></span></div>
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</div>
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</td>
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<td>指示元素对齐的标签类型<br />
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<span class="t-mark">(类)</span></td>
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</tr>
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<tr class="t-dsc">
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<td>
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<div class="t-dsc-member-div">
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<div><a href="cpp-experimental-simd-vector_aligned.html"><span class="t-lines"><span>vector_aligned_tag</span> <span>vector_aligned</span></span></a></div>
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<div><span class="t-lines"><span><span class="t-mark-rev t-since-parallelism-ts-2 t-mark-ts">(并行 TS v2)</span></span></span></div>
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</div>
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</td>
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<td>指示向量类型对齐的标签类型<br />
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<span class="t-mark">(类)</span></td>
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</tr>
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<tr class="t-dsc">
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<td>
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<div class="t-dsc-member-div">
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<div><a href="cpp-experimental-simd-overaligned.html"><span class="t-lines"><span>overaligned_tag</span> <span>overaligned</span></span></a></div>
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<div><span class="t-lines"><span><span class="t-mark-rev t-since-parallelism-ts-2 t-mark-ts">(并行 TS v2)</span></span></span></div>
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</div>
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</td>
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<td>指示指定对齐的标签类型<br />
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<span class="t-mark">(类模板)</span></td>
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</tr>
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</table>
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<h3><span class="mw-headline" id="where_expression">where_expression</span></h3>
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<table class="t-dsc-begin">
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<tr class="t-dsc">
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<td>
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<div class="t-dsc-member-div">
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<div><a href="cpp-experimental-simd-const_where_expression.html"><span class="t-lines"><span>const_where_expression</span></span></a></div>
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<div><span class="t-lines"><span><span class="t-mark-rev t-since-parallelism-ts-2 t-mark-ts">(并行 TS v2)</span></span></span></div>
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</div>
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</td>
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<td>以非修改操作选择的元素<br />
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<span class="t-mark">(类模板)</span></td>
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</tr>
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<tr class="t-dsc">
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<td>
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<div class="t-dsc-member-div">
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<div><a href="cpp-experimental-simd-where_expression.html"><span class="t-lines"><span>where_expression</span></span></a></div>
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<div><span class="t-lines"><span><span class="t-mark-rev t-since-parallelism-ts-2 t-mark-ts">(并行 TS v2)</span></span></span></div>
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</div>
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</td>
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<td>以修改操作选择的元素<br />
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<span class="t-mark">(类模板)</span></td>
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</tr>
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<tr class="t-dsc">
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<td>
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<div class="t-dsc-member-div">
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<div><a href="cpp-experimental-simd-where.html"><span class="t-lines"><span>where</span></span></a></div>
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<div><span class="t-lines"><span><span class="t-mark-rev t-since-parallelism-ts-2 t-mark-ts">(并行 TS v2)</span></span></span></div>
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</div>
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</td>
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<td>产生 const_where_expression 和 where_expression<br />
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<span class="t-mark">(函数模板)</span></td>
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</tr>
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</table>
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<h3><span class="mw-headline" id=".E8.BD.AC.E5.9E.8B">转型</span></h3>
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<table class="t-dsc-begin">
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<tr class="t-dsc">
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<td>
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<div class="t-dsc-member-div">
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<div><a href="cpp-experimental-simd-simd_cast.html"><span class="t-lines"><span>simd_cast</span> <span>static_simd_cast</span></span></a></div>
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<div><span class="t-lines"><span><span class="t-mark-rev t-since-parallelism-ts-2 t-mark-ts">(并行 TS v2)</span></span></span></div>
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</div>
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</td>
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<td>逐元素 static_cast<br />
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<span class="t-mark">(函数模板)</span></td>
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</tr>
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<tr class="t-dsc">
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<td>
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<div class="t-dsc-member-div">
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<div><a href="cpp-experimental-simd-abi_cast.html"><span class="t-lines"><span>to_fixed_size</span> <span>to_compatible</span> <span>to_native</span></span></a></div>
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<div><span class="t-lines"><span><span class="t-mark-rev t-since-parallelism-ts-2 t-mark-ts">(并行 TS v2)</span></span></span></div>
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</div>
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</td>
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<td>逐元素 ABI 转型<br />
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<span class="t-mark">(函数模板)</span></td>
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</tr>
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<tr class="t-dsc">
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<td>
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<div class="t-dsc-member-div">
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<div><a href="cpp-experimental-simd-split.html"><span class="t-lines"><span>split</span></span></a></div>
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<div><span class="t-lines"><span><span class="t-mark-rev t-since-parallelism-ts-2 t-mark-ts">(并行 TS v2)</span></span></span></div>
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</div>
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</td>
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<td>分割单个 simd 对象为多个<br />
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<span class="t-mark">(函数模板)</span></td>
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</tr>
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<tr class="t-dsc">
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<td>
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<div class="t-dsc-member-div">
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<div><a href="cpp-experimental-simd-concat.html"><span class="t-lines"><span>concat</span></span></a></div>
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<div><span class="t-lines"><span><span class="t-mark-rev t-since-parallelism-ts-2 t-mark-ts">(并行 TS v2)</span></span></span></div>
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</div>
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</td>
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<td>连接多个 simd 对象为单个<br />
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<span class="t-mark">(函数模板)</span></td>
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</tr>
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</table>
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<h3><span class="mw-headline" id=".E7.AE.97.E6.B3.95">算法</span></h3>
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<table class="t-dsc-begin">
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<tr class="t-dsc">
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<td>
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<div class="t-dsc-member-div">
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<div><a href="cpp-experimental-simd-min.html"><span class="t-lines"><span>min</span></span></a></div>
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<div><span class="t-lines"><span><span class="t-mark-rev t-since-parallelism-ts-2 t-mark-ts">(并行 TS v2)</span></span></span></div>
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</div>
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</td>
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<td>逐元素 min 操作<br />
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<span class="t-mark">(函数模板)</span></td>
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</tr>
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<tr class="t-dsc">
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<td>
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<div class="t-dsc-member-div">
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<div><a href="cpp-experimental-simd-max.html"><span class="t-lines"><span>max</span></span></a></div>
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<div><span class="t-lines"><span><span class="t-mark-rev t-since-parallelism-ts-2 t-mark-ts">(并行 TS v2)</span></span></span></div>
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</div>
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</td>
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<td>逐元素 max 操作<br />
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<span class="t-mark">(函数模板)</span></td>
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</tr>
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<tr class="t-dsc">
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<td>
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<div class="t-dsc-member-div">
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<div><a href="cpp-experimental-simd-minmax.html"><span class="t-lines"><span>minmax</span></span></a></div>
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<div><span class="t-lines"><span><span class="t-mark-rev t-since-parallelism-ts-2 t-mark-ts">(并行 TS v2)</span></span></span></div>
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</div>
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</td>
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<td>逐元素 minmax 操作<br />
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<span class="t-mark">(函数模板)</span></td>
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</tr>
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<tr class="t-dsc">
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<td>
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<div class="t-dsc-member-div">
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<div><a href="cpp-experimental-simd-clamp.html"><span class="t-lines"><span>clamp</span></span></a></div>
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<div><span class="t-lines"><span><span class="t-mark-rev t-since-parallelism-ts-2 t-mark-ts">(并行 TS v2)</span></span></span></div>
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</div>
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</td>
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<td>逐元素 clamp 操作<br />
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<span class="t-mark">(函数模板)</span></td>
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</tr>
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</table>
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<h3><span class="mw-headline" id=".E8.A7.84.E7.BA.A6">规约</span></h3>
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<table class="t-dsc-begin">
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<tr class="t-dsc">
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<td>
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<div class="t-dsc-member-div">
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<div><a href="https://zh.cppreference.com/mwiki/index.php?title=cpp/experimental/simd/reduce&action=edit&redlink=1" class="new" title="cpp/experimental/simd/reduce（页面不存在）"><span class="t-lines"><span>reduce</span></span></a></div>
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<div><span class="t-lines"><span><span class="t-mark-rev t-since-parallelism-ts-2 t-mark-ts">(并行 TS v2)</span></span></span></div>
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</div>
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</td>
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<td>规约向量为单个元素<br />
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<span class="t-mark">(函数模板)</span></td>
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</tr>
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<tr class="t-dsc">
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<td>
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<div class="t-dsc-member-div">
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<div><a href="https://zh.cppreference.com/mwiki/index.php?title=cpp/experimental/simd/hmin&action=edit&redlink=1" class="new" title="cpp/experimental/simd/hmin（页面不存在）"><span class="t-lines"><span>hmin</span></span></a></div>
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<div><span class="t-lines"><span><span class="t-mark-rev t-since-parallelism-ts-2 t-mark-ts">(并行 TS v2)</span></span></span></div>
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</div>
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</td>
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<td>返回最小元素<br />
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<span class="t-mark">(函数模板)</span></td>
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</tr>
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<tr class="t-dsc">
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<td>
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<div class="t-dsc-member-div">
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<div><a href="https://zh.cppreference.com/mwiki/index.php?title=cpp/experimental/simd/hmax&action=edit&redlink=1" class="new" title="cpp/experimental/simd/hmax（页面不存在）"><span class="t-lines"><span>hmax</span></span></a></div>
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<div><span class="t-lines"><span><span class="t-mark-rev t-since-parallelism-ts-2 t-mark-ts">(并行 TS v2)</span></span></span></div>
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</div>
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</td>
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<td>返回最大元素<br />
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<span class="t-mark">(函数模板)</span></td>
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</tr>
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</table>
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<h3><span class="mw-headline" id=".E6.8E.A9.E7.A0.81.E8.A7.84.E7.BA.A6">掩码规约</span></h3>
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<table class="t-dsc-begin">
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<tr class="t-dsc">
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<td>
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<div class="t-dsc-member-div">
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<div><a href="https://zh.cppreference.com/mwiki/index.php?title=cpp/experimental/simd/all_of&action=edit&redlink=1" class="new" title="cpp/experimental/simd/all of（页面不存在）"><span class="t-lines"><span>all_of</span> <span>any_of</span> <span>none_of</span> <span>some_of</span></span></a></div>
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<div><span class="t-lines"><span><span class="t-mark-rev t-since-parallelism-ts-2 t-mark-ts">(并行 TS v2)</span></span></span></div>
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</div>
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</td>
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<td>true 值数上的谓词<br />
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<span class="t-mark">(函数模板)</span></td>
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</tr>
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<tr class="t-dsc">
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<td>
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<div class="t-dsc-member-div">
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<div><a href="https://zh.cppreference.com/mwiki/index.php?title=cpp/experimental/simd/popcount&action=edit&redlink=1" class="new" title="cpp/experimental/simd/popcount（页面不存在）"><span class="t-lines"><span>popcount</span></span></a></div>
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<div><span class="t-lines"><span><span class="t-mark-rev t-since-parallelism-ts-2 t-mark-ts">(并行 TS v2)</span></span></span></div>
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</div>
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</td>
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<td>返回 true 值数<br />
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<span class="t-mark">(函数模板)</span></td>
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</tr>
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<tr class="t-dsc">
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<td>
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<div class="t-dsc-member-div">
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<div><a href="https://zh.cppreference.com/mwiki/index.php?title=cpp/experimental/simd/find_first_set&action=edit&redlink=1" class="new" title="cpp/experimental/simd/find first set（页面不存在）"><span class="t-lines"><span>find_first_set</span> <span>find_last_set</span></span></a></div>
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<div><span class="t-lines"><span><span class="t-mark-rev t-since-parallelism-ts-2 t-mark-ts">(并行 TS v2)</span></span></span></div>
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</div>
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</td>
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<td>返回首个或最末 true 值的位置<br />
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<span class="t-mark">(函数模板)</span></td>
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</tr>
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</table>
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<h3><span class="mw-headline" id=".E7.89.B9.E6.80.A7">特性</span></h3>
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<table class="t-dsc-begin">
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<tr class="t-dsc">
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<td>
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<div class="t-dsc-member-div">
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<div><a href="cpp-experimental-simd-is_simd.html"><span class="t-lines"><span>is_simd</span> <span>is_simd_mask</span></span></a></div>
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<div><span class="t-lines"><span><span class="t-mark-rev t-since-parallelism-ts-2 t-mark-ts">(并行 TS v2)</span></span></span></div>
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</div>
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</td>
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<td>检查类型是否为 <a href="cpp-experimental-simd-simd.html"><tt>simd</tt></a> 或 <a href="cpp-experimental-simd-simd_mask.html"><tt>simd_mask</tt></a> 类型<br />
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<span class="t-mark">(类模板)</span></td>
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</tr>
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<tr class="t-dsc">
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<td>
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<div class="t-dsc-member-div">
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<div><a href="cpp-experimental-simd-is_abi_tag.html"><span class="t-lines"><span>is_abi_tag</span></span></a></div>
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<div><span class="t-lines"><span><span class="t-mark-rev t-since-parallelism-ts-2 t-mark-ts">(并行 TS v2)</span></span></span></div>
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</div>
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</td>
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<td>检查类型是否为 ABI 标签类型<br />
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<span class="t-mark">(类模板)</span></td>
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</tr>
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<tr class="t-dsc">
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<td>
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<div class="t-dsc-member-div">
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<div><a href="cpp-experimental-simd-is_simd_flag_type.html"><span class="t-lines"><span>is_simd_flag_type</span></span></a></div>
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<div><span class="t-lines"><span><span class="t-mark-rev t-since-parallelism-ts-2 t-mark-ts">(并行 TS v2)</span></span></span></div>
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</div>
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</td>
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<td>检查类型是否为 simd 标志类型<br />
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<span class="t-mark">(类模板)</span></td>
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</tr>
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<tr class="t-dsc">
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<td>
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<div class="t-dsc-member-div">
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<div><a href="https://zh.cppreference.com/mwiki/index.php?title=cpp/experimental/simd/simd_size&action=edit&redlink=1" class="new" title="cpp/experimental/simd/simd size（页面不存在）"><span class="t-lines"><span>simd_size</span></span></a></div>
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<div><span class="t-lines"><span><span class="t-mark-rev t-since-parallelism-ts-2 t-mark-ts">(并行 TS v2)</span></span></span></div>
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</div>
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</td>
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<td>获得给定的元素类型及 ABI 的元素数<br />
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<span class="t-mark">(类模板)</span></td>
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</tr>
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<tr class="t-dsc">
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<td>
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<div class="t-dsc-member-div">
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<div><a href="https://zh.cppreference.com/mwiki/index.php?title=cpp/experimental/simd/memory_alignment&action=edit&redlink=1" class="new" title="cpp/experimental/simd/memory alignment（页面不存在）"><span class="t-lines"><span>memory_alignment</span></span></a></div>
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<div><span class="t-lines"><span><span class="t-mark-rev t-since-parallelism-ts-2 t-mark-ts">(并行 TS v2)</span></span></span></div>
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</div>
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</td>
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<td>获得 vector_aligned 的适当对齐<br />
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<span class="t-mark">(类模板)</span></td>
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</tr>
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<tr class="t-dsc">
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<td>
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<div class="t-dsc-member-div">
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<div><a href="cpp-experimental-simd-rebind_simd.html"><span class="t-lines"><span>rebind_simd</span> <span>resize_simd</span></span></a></div>
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<div><span class="t-lines"><span><span class="t-mark-rev t-since-parallelism-ts-2 t-mark-ts">(并行 TS v2)</span></span></span></div>
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</div>
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</td>
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<td>更改 <a href="cpp-experimental-simd-simd.html"><tt>simd</tt></a> 或 <a href="cpp-experimental-simd-simd_mask.html"><tt>simd_mask</tt></a> 的元素数或元素类型<br />
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<span class="t-mark">(类模板)</span></td>
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</tr>
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</table>
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<h3><span class="mw-headline" id=".E6.95.B0.E5.AD.A6.E5.87.BD.E6.95.B0">数学函数</span></h3>
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<h3><span class="mw-headline" id=".E7.A4.BA.E4.BE.8B">示例</span></h3>
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</div>
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<div class="visualClear"></div>
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</div>
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</div>
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</div>
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</body>
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</html>
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