197 lines
12 KiB
HTML
197 lines
12 KiB
HTML
<!DOCTYPE html>
|
|
<html lang="zh" dir="ltr" class="client-nojs" xmlns="http://www.w3.org/1999/xhtml" xml:lang="zh">
|
|
<head><meta http-equiv="x-ua-compatible" content="ie=edge">
|
|
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
|
|
<title>std::experimental::simd_mask</title>
|
|
<link rel="stylesheet" href="ext.css" />
|
|
<link rel="stylesheet" href="site_modules.css" />
|
|
</head>
|
|
<body class="mediawiki ltr sitedir-ltr ns-0 ns-subject page-cpp_experimental_simd_simd_mask skin-cppreference2 action-view cpp-navbar">
|
|
<div id="cpp-content-base">
|
|
<div id="content"><a id="top"></a>
|
|
<h1 id="firstHeading" class="firstHeading"><span style="font-size:0.7em; line-height:130%">std::experimental::</span>simd_mask</h1>
|
|
<div id="bodyContent">
|
|
<div id="contentSub"><span class="subpages">< <a href="cpp.html">cpp</a>‎ | <a href="cpp-experimental.html">experimental</a>‎ | <a href="cpp-experimental-simd.html">simd</a></span></div>
|
|
<div id="mw-content-text" lang="zh" dir="ltr" class="mw-content-ltr" xml:lang="zh">
|
|
<table class="t-dcl-begin">
|
|
<tbody>
|
|
<tr class="t-dsc-header">
|
|
<td>
|
|
<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>
|
|
</td>
|
|
<td></td>
|
|
<td></td>
|
|
</tr>
|
|
<tr class="t-dcl t-since-parallelism_ts_2">
|
|
<td>
|
|
<div><span class="mw-geshi cpp source-cpp"><span class="kw1">template</span><span class="sy1"><</span> <span class="kw1">class</span> T, <span class="kw1">class</span> Abi <span class="sy1">=</span> simd_abi<span class="sy4">::</span><span class="me2">compatible</span><span class="sy1"><</span>T<span class="sy1">></span> <span class="sy1">></span><br />
|
|
<span class="kw1">class</span> simd_mask<span class="sy4">;</span></span></div>
|
|
</td>
|
|
<td class="t-dcl-nopad"></td>
|
|
<td><span class="t-mark-rev t-since-parallelism-ts-2 t-mark-ts">(并行 TS v2)</span></td>
|
|
</tr>
|
|
<tr class="t-dcl-sep">
|
|
<td></td>
|
|
<td></td>
|
|
<td></td>
|
|
</tr>
|
|
</tbody>
|
|
</table>
|
|
<p>类模板 simd_mask 是元素类型为 bool 的数据并行类型。给定的 simd_mask 实例化的宽度是常量表达式，由模板形参确定。具体来说， <span class="t-c"><span class="mw-geshi cpp source-cpp">simd_mask<span class="sy1"><</span>T, Abi<span class="sy1">></span><span class="sy4">::</span><span class="me2">size</span><span class="br0">(</span><span class="br0">)</span></span></span> 始终为 <span class="t-c"><span class="mw-geshi cpp source-cpp">simd<span class="sy1"><</span>T, Abi<span class="sy1">></span><span class="sy4">::</span><span class="me2">size</span><span class="br0">(</span><span class="br0">)</span></span></span> 。</p>
|
|
<h3><span class="mw-headline" id=".E6.A8.A1.E6.9D.BF.E5.BD.A2.E5.8F.82">模板形参</span></h3>
|
|
<table class="t-par-begin">
|
|
<tr class="t-par">
|
|
<td>T</td>
|
|
<td>-</td>
|
|
<td>应用 simd_mask 的元素类型</td>
|
|
</tr>
|
|
<tr class="t-par">
|
|
<td>Abi</td>
|
|
<td>-</td>
|
|
<td>应用 simd_mask 的 ABI 类型</td>
|
|
</tr>
|
|
</table>
|
|
<h3><span class="mw-headline" id=".E8.BE.85.E5.8A.A9.E5.88.AB.E5.90.8D.E6.A8.A1.E7.89.88">辅助别名模版</span></h3>
|
|
<table class="t-dsc-begin">
|
|
<tr class="t-dsc-hitem">
|
|
<td>模板</td>
|
|
<td>定义</td>
|
|
</tr>
|
|
<tr class="t-dsc">
|
|
<td><span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="kw1">template</span> <span class="sy1"><</span><span class="kw1">class</span> T, <span class="kw4">int</span> N<span class="sy1">></span> <span class="kw1">using</span> fixed_size_simd_mask</span></span></td>
|
|
<td><span class="t-c"><span class="mw-geshi cpp source-cpp">simd_mask<span class="sy1"><</span>T, simd_abi<span class="sy4">::</span><span class="me2">fixed_size</span><span class="sy1"><</span>N<span class="sy1">>></span></span></span></td>
|
|
</tr>
|
|
<tr class="t-dsc">
|
|
<td><span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="kw1">template</span> <span class="sy1"><</span><span class="kw1">class</span> T<span class="sy1">></span> <span class="kw1">using</span> native_simd_mask</span></span></td>
|
|
<td><span class="t-c"><span class="mw-geshi cpp source-cpp">simd_mask<span class="sy1"><</span>T, simd_abi<span class="sy4">::</span><span class="me2">native</span><span class="sy1">></span></span></span></td>
|
|
</tr>
|
|
</table>
|
|
<h3><span class="mw-headline" id=".E6.88.90.E5.91.98.E7.B1.BB.E5.9E.8B">成员类型</span></h3>
|
|
<table class="t-dsc-begin">
|
|
<tr class="t-dsc-hitem">
|
|
<td>成员类型</td>
|
|
<td>定义</td>
|
|
</tr>
|
|
<tr class="t-dsc">
|
|
<td><code>value_type</code></td>
|
|
<td><span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="kw4">bool</span></span></span></td>
|
|
</tr>
|
|
<tr class="t-dsc">
|
|
<td><code>reference</code></td>
|
|
<td>实现定义</td>
|
|
</tr>
|
|
<tr class="t-dsc">
|
|
<td><code>simd_type</code></td>
|
|
<td><span class="t-c"><span class="mw-geshi cpp source-cpp">simd<span class="sy1"><</span>T, Abi<span class="sy1">></span></span></span></td>
|
|
</tr>
|
|
<tr class="t-dsc">
|
|
<td><code>abi_type</code></td>
|
|
<td><span class="t-c"><span class="mw-geshi cpp source-cpp">Abi</span></span></td>
|
|
</tr>
|
|
</table>
|
|
<h3><span class="mw-headline" id=".E6.88.90.E5.91.98.E5.87.BD.E6.95.B0">成员函数</span></h3>
|
|
<table class="t-dsc-begin">
|
|
<tr class="t-dsc">
|
|
<td>
|
|
<div class="t-dsc-member-div t-dsc-member-nobold-div">
|
|
<div><a href="https://zh.cppreference.com/mwiki/index.php?title=cpp/experimental/simd/simd_mask/simd_mask&action=edit&redlink=1" class="new" title="cpp/experimental/simd/simd mask/simd mask（页面不存在）"><span class="t-lines"><span>(构造函数)</span></span></a></div>
|
|
</div>
|
|
</td>
|
|
<td>构造 <code>simd_mask</code> 对象<br />
|
|
<span class="t-mark">(公开成员函数)</span></td>
|
|
</tr>
|
|
<tr class="t-dsc">
|
|
<td>
|
|
<div class="t-dsc-member-div">
|
|
<div><a href="https://zh.cppreference.com/mwiki/index.php?title=cpp/experimental/simd/simd_mask/copy_from&action=edit&redlink=1" class="new" title="cpp/experimental/simd/simd mask/copy from（页面不存在）"><span class="t-lines"><span>copy_from</span></span></a></div>
|
|
</div>
|
|
</td>
|
|
<td>从地址加载<br />
|
|
<span class="t-mark">(公开成员函数)</span></td>
|
|
</tr>
|
|
<tr class="t-dsc">
|
|
<td>
|
|
<div class="t-dsc-member-div">
|
|
<div><a href="https://zh.cppreference.com/mwiki/index.php?title=cpp/experimental/simd/simd_mask/copy_to&action=edit&redlink=1" class="new" title="cpp/experimental/simd/simd mask/copy to（页面不存在）"><span class="t-lines"><span>copy_to</span></span></a></div>
|
|
</div>
|
|
</td>
|
|
<td>存储到地址<br />
|
|
<span class="t-mark">(公开成员函数)</span></td>
|
|
</tr>
|
|
<tr class="t-dsc">
|
|
<td>
|
|
<div class="t-dsc-member-div">
|
|
<div><a href="https://zh.cppreference.com/mwiki/index.php?title=cpp/experimental/simd/simd_mask/operator_at&action=edit&redlink=1" class="new" title="cpp/experimental/simd/simd mask/operator at（页面不存在）"><span class="t-lines"><span>operator[]</span></span></a></div>
|
|
</div>
|
|
</td>
|
|
<td>访问指定的元素<br />
|
|
<span class="t-mark">(公开成员函数)</span></td>
|
|
</tr>
|
|
<tr class="t-dsc">
|
|
<td>
|
|
<div class="t-dsc-member-div">
|
|
<div><a href="https://zh.cppreference.com/mwiki/index.php?title=cpp/experimental/simd/simd_mask/operator_mem_logic&action=edit&redlink=1" class="new" title="cpp/experimental/simd/simd mask/operator mem logic（页面不存在）"><span class="t-lines"><span>operator!</span></span></a></div>
|
|
</div>
|
|
</td>
|
|
<td>取反每个元素<br />
|
|
<span class="t-mark">(公开成员函数)</span></td>
|
|
</tr>
|
|
<tr class="t-dsc">
|
|
<td>
|
|
<div class="t-dsc-member-div">
|
|
<div><a href="https://zh.cppreference.com/mwiki/index.php?title=cpp/experimental/simd/simd_mask/size&action=edit&redlink=1" class="new" title="cpp/experimental/simd/simd mask/size（页面不存在）"><span class="t-lines"><span>size</span></span></a></div>
|
|
<div><span class="t-lines"><span><span class="t-cmark">[静态]</span></span></span></div>
|
|
</div>
|
|
</td>
|
|
<td>返回元素数<br />
|
|
<span class="t-mark">(公开静态成员函数)</span></td>
|
|
</tr>
|
|
</table>
|
|
<h3><span class="mw-headline" id=".E9.9D.9E.E6.88.90.E5.91.98.E5.87.BD.E6.95.B0">非成员函数</span></h3>
|
|
<table class="t-dsc-begin">
|
|
<tr class="t-dsc">
|
|
<td>
|
|
<div class="t-dsc-member-div">
|
|
<div><a href="https://zh.cppreference.com/mwiki/index.php?title=cpp/experimental/simd/simd_mask/operator_logic&action=edit&redlink=1" class="new" title="cpp/experimental/simd/simd mask/operator logic（页面不存在）"><span class="t-lines"><span>operator&&</span> <span>operator||</span></span></a></div>
|
|
</div>
|
|
</td>
|
|
<td>逐元素逻辑运算符<br />
|
|
<span class="t-mark">(函数)</span></td>
|
|
</tr>
|
|
<tr class="t-dsc">
|
|
<td>
|
|
<div class="t-dsc-member-div">
|
|
<div><a href="https://zh.cppreference.com/mwiki/index.php?title=cpp/experimental/simd/simd_mask/operator_bitwise&action=edit&redlink=1" class="new" title="cpp/experimental/simd/simd mask/operator bitwise（页面不存在）"><span class="t-lines"><span>operator&</span> <span>operator|</span> <span>operator^</span></span></a></div>
|
|
</div>
|
|
</td>
|
|
<td>逐元素逐位运算符<br />
|
|
<span class="t-mark">(函数)</span></td>
|
|
</tr>
|
|
<tr class="t-dsc">
|
|
<td>
|
|
<div class="t-dsc-member-div">
|
|
<div><a href="https://zh.cppreference.com/mwiki/index.php?title=cpp/experimental/simd/simd_mask/operator_compound&action=edit&redlink=1" class="new" title="cpp/experimental/simd/simd mask/operator compound（页面不存在）"><span class="t-lines"><span>operator&=</span> <span>operator|=</span> <span>operator^=</span></span></a></div>
|
|
</div>
|
|
</td>
|
|
<td>逐元素复合赋值运算符<br />
|
|
<span class="t-mark">(函数)</span></td>
|
|
</tr>
|
|
<tr class="t-dsc">
|
|
<td>
|
|
<div class="t-dsc-member-div">
|
|
<div><a href="https://zh.cppreference.com/mwiki/index.php?title=cpp/experimental/simd/simd_mask/operator_relation&action=edit&redlink=1" class="new" title="cpp/experimental/simd/simd mask/operator relation（页面不存在）"><span class="t-lines"><span>operator==</span> <span>operator!=</span></span></a></div>
|
|
</div>
|
|
</td>
|
|
<td>逐元素关系运算符<br />
|
|
<span class="t-mark">(函数)</span></td>
|
|
</tr>
|
|
</table>
|
|
<h3><span class="mw-headline" id=".E7.A4.BA.E4.BE.8B">示例</span></h3>
|
|
</div>
|
|
<div class="visualClear"></div>
|
|
</div>
|
|
</div>
|
|
</div>
|
|
</body>
|
|
</html>
|