10 lines
4.8 KiB
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10 lines
4.8 KiB
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<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="Provides an architecture independent implementation of the “packed pair” algorithm."><title>memchr::arch::all::packedpair - Rust</title><script>if(window.location.protocol!=="file:")document.head.insertAdjacentHTML("beforeend","SourceSerif4-Regular-6b053e98.ttf.woff2,FiraSans-Italic-81dc35de.woff2,FiraSans-Regular-0fe48ade.woff2,FiraSans-MediumItalic-ccf7e434.woff2,FiraSans-Medium-e1aa3f0a.woff2,SourceCodePro-Regular-8badfe75.ttf.woff2,SourceCodePro-Semibold-aa29a496.ttf.woff2".split(",").map(f=>`<link rel="preload" as="font" type="font/woff2"href="../../../../static.files/${f}">`).join(""))</script><link rel="stylesheet" href="../../../../static.files/normalize-9960930a.css"><link rel="stylesheet" href="../../../../static.files/rustdoc-ca0dd0c4.css"><meta name="rustdoc-vars" data-root-path="../../../../" data-static-root-path="../../../../static.files/" data-current-crate="memchr" data-themes="" data-resource-suffix="" data-rustdoc-version="1.93.1 (01f6ddf75 2026-02-11) (Arch Linux rust 1:1.93.1-1)" data-channel="1.93.1" data-search-js="search-9e2438ea.js" data-stringdex-js="stringdex-a3946164.js" data-settings-js="settings-c38705f0.js" ><script src="../../../../static.files/storage-e2aeef58.js"></script><script defer src="../sidebar-items.js"></script><script defer src="../../../../static.files/main-a410ff4d.js"></script><noscript><link rel="stylesheet" href="../../../../static.files/noscript-263c88ec.css"></noscript><link rel="alternate icon" type="image/png" href="../../../../static.files/favicon-32x32-eab170b8.png"><link rel="icon" type="image/svg+xml" href="../../../../static.files/favicon-044be391.svg"></head><body class="rustdoc mod"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><rustdoc-topbar><h2><a href="#">Module packedpair</a></h2></rustdoc-topbar><nav class="sidebar"><div class="sidebar-crate"><h2><a href="../../../../memchr/index.html">memchr</a><span class="version">2.8.0</span></h2></div><div class="sidebar-elems"><section id="rustdoc-toc"><h2 class="location"><a href="#">Module packedpair</a></h2><h3><a href="#structs">Module Items</a></h3><ul class="block"><li><a href="#structs" title="Structs">Structs</a></li><li><a href="#traits" title="Traits">Traits</a></li></ul></section><div id="rustdoc-modnav"><h2><a href="../index.html">In memchr::<wbr>arch::<wbr>all</a></h2></div></div></nav><div class="sidebar-resizer" title="Drag to resize sidebar"></div><main><div class="width-limiter"><section id="main-content" class="content"><div class="main-heading"><div class="rustdoc-breadcrumbs"><a href="../../../index.html">memchr</a>::<wbr><a href="../../index.html">arch</a>::<wbr><a href="../index.html">all</a></div><h1>Module <span>packedpair</span> <button id="copy-path" title="Copy item path to clipboard">Copy item path</button></h1><rustdoc-toolbar></rustdoc-toolbar><span class="sub-heading"><a class="src" href="../../../../src/memchr/arch/all/packedpair/mod.rs.html#1-359">Source</a> </span></div><details class="toggle top-doc" open><summary class="hideme"><span>Expand description</span></summary><div class="docblock"><p>Provides an architecture independent implementation of the “packed pair”
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algorithm.</p>
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<p>The “packed pair” algorithm is based on the <a href="http://0x80.pl/articles/simd-strfind.html#first-and-last">generic SIMD</a> algorithm. The main
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difference is that it (by default) uses a background distribution of byte
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frequencies to heuristically select the pair of bytes to search for. Note that
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this module provides an architecture independent version that doesn’t do as
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good of a job keeping the search for candidates inside a SIMD hot path. It
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however can be good enough in many circumstances.</p>
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</div></details><h2 id="structs" class="section-header">Structs<a href="#structs" class="anchor">§</a></h2><dl class="item-table"><dt><a class="struct" href="struct.Finder.html" title="struct memchr::arch::all::packedpair::Finder">Finder</a></dt><dd>An architecture independent “packed pair” finder.</dd><dt><a class="struct" href="struct.Pair.html" title="struct memchr::arch::all::packedpair::Pair">Pair</a></dt><dd>A pair of byte offsets into a needle to use as a predicate.</dd></dl><h2 id="traits" class="section-header">Traits<a href="#traits" class="anchor">§</a></h2><dl class="item-table"><dt><a class="trait" href="trait.HeuristicFrequencyRank.html" title="trait memchr::arch::all::packedpair::HeuristicFrequencyRank">Heuristic<wbr>Frequency<wbr>Rank</a></dt><dd>This trait allows the user to customize the heuristic used to determine the
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relative frequency of a given byte in the dataset being searched.</dd></dl></section></div></main></body></html> |