| <!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="Source of the Rust file `/root/.cargo/registry/src/github.com-1ecc6299db9ec823/memchr-2.5.0/src/memmem/prefilter/x86/sse.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>sse.rs - source</title><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../../../SourceSerif4-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../../../FiraSans-Regular.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../../../FiraSans-Medium.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../../../SourceCodePro-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../../../SourceSerif4-Bold.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../../../SourceCodePro-Semibold.ttf.woff2"><link rel="stylesheet" href="../../../../../normalize.css"><link rel="stylesheet" href="../../../../../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" href="../../../../../ayu.css" disabled><link rel="stylesheet" href="../../../../../dark.css" disabled><link rel="stylesheet" href="../../../../../light.css" id="themeStyle"><script id="default-settings" ></script><script src="../../../../../storage.js"></script><script defer src="../../../../../source-script.js"></script><script defer src="../../../../../source-files.js"></script><script defer src="../../../../../main.js"></script><noscript><link rel="stylesheet" href="../../../../../noscript.css"></noscript><link rel="alternate icon" type="image/png" href="../../../../../favicon-16x16.png"><link rel="alternate icon" type="image/png" href="../../../../../favicon-32x32.png"><link rel="icon" type="image/svg+xml" href="../../../../../favicon.svg"></head><body class="rustdoc source"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><a class="sidebar-logo" href="../../../../../memchr/index.html"><div class="logo-container"><img class="rust-logo" src="../../../../../rust-logo.svg" alt="logo"></div></a></nav><main><div class="width-limiter"><nav class="sub"><a class="sub-logo-container" href="../../../../../memchr/index.html"><img class="rust-logo" src="../../../../../rust-logo.svg" alt="logo"></a><form class="search-form"><div class="search-container"><span></span><input class="search-input" name="search" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"><div id="help-button" title="help" tabindex="-1"><a href="../../../../../help.html">?</a></div><div id="settings-menu" tabindex="-1"><a href="../../../../../settings.html" title="settings"><img width="22" height="22" alt="Change settings" src="../../../../../wheel.svg"></a></div></div></form></nav><section id="main-content" class="content"><div class="example-wrap"><pre class="src-line-numbers"><span id="1">1</span> |
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| </pre><pre class="rust"><code><span class="kw">use </span>core::arch::x86_64::__m128i; |
| |
| <span class="kw">use </span><span class="kw">crate</span>::memmem::{ |
| prefilter::{PrefilterFnTy, PrefilterState}, |
| NeedleInfo, |
| }; |
| |
| <span class="comment">// Check that the functions below satisfy the Prefilter function type. |
| </span><span class="kw">const _</span>: PrefilterFnTy = find; |
| |
| <span class="doccomment">/// An SSE2 accelerated candidate finder for single-substring search. |
| /// |
| /// # Safety |
| /// |
| /// Callers must ensure that the sse2 CPU feature is enabled in the current |
| /// environment. This feature should be enabled in all x86_64 targets. |
| </span><span class="attribute">#[target_feature(enable = <span class="string">"sse2"</span>)] |
| </span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">unsafe fn </span>find( |
| prestate: <span class="kw-2">&mut </span>PrefilterState, |
| ninfo: <span class="kw-2">&</span>NeedleInfo, |
| haystack: <span class="kw-2">&</span>[u8], |
| needle: <span class="kw-2">&</span>[u8], |
| ) -> <span class="prelude-ty">Option</span><usize> { |
| <span class="kw">super</span>::<span class="kw">super</span>::genericsimd::find::<__m128i>( |
| prestate, |
| ninfo, |
| haystack, |
| needle, |
| <span class="kw">super</span>::<span class="kw">super</span>::simple_memchr_fallback, |
| ) |
| } |
| |
| <span class="attribute">#[cfg(all(test, feature = <span class="string">"std"</span>))] |
| </span><span class="kw">mod </span>tests { |
| <span class="attribute">#[test] |
| #[cfg(not(miri))] |
| </span><span class="kw">fn </span>prefilter_permutations() { |
| <span class="kw">use </span><span class="kw">crate</span>::memmem::prefilter::tests::PrefilterTest; |
| <span class="comment">// SAFETY: super::find is safe to call for all inputs on x86. |
| </span><span class="kw">unsafe </span>{ PrefilterTest::run_all_tests(<span class="kw">super</span>::find) }; |
| } |
| } |
| </code></pre></div> |
| </section></div></main><div id="rustdoc-vars" data-root-path="../../../../../" data-current-crate="memchr" data-themes="ayu,dark,light" data-resource-suffix="" data-rustdoc-version="1.66.0-nightly (5c8bff74b 2022-10-21)" ></div></body></html> |
