<!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 to the Rust file `libcore/../stdsimd/coresimd/x86/tbm.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>tbm.rs.html -- source</title><link rel="stylesheet" type="text/css" href="../../../../../../normalize.css"><link rel="stylesheet" type="text/css" href="../../../../../../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" type="text/css" href="../../../../../../dark.css"><link rel="stylesheet" type="text/css" href="../../../../../../light.css" id="themeStyle"><script src="../../../../../../storage.js"></script><link rel="shortcut icon" href="https://doc.rust-lang.org/favicon.ico"></head><body class="rustdoc source"><!--[if lte IE 8]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><div class="sidebar-menu">☰</div><a href='../../../../../../core/index.html'><img src='https://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png' alt='logo' width='100'></a></nav><div class="theme-picker"><button id="theme-picker" aria-label="Pick another theme!"><img src="../../../../../../brush.svg" width="18" alt="Pick another theme!"></button><div id="theme-choices"></div></div><script src="../../../../../../theme.js"></script><nav class="sub"><form class="search-form js-only"><div class="search-container"><input class="search-input" name="search" autocomplete="off" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"><a id="settings-menu" href="../../../../../../settings.html"><img src="../../../../../../wheel.svg" width="18" alt="Change settings"></a></div></form></nav><section id="main" class="content"><pre class="line-numbers"><span id="1"> 1</span> <span id="2"> 2</span> <span id="3"> 3</span> <span id="4"> 4</span> <span id="5"> 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id="429">429</span> <span id="430">430</span> <span id="431">431</span> <span id="432">432</span> <span id="433">433</span> <span id="434">434</span> <span id="435">435</span> <span id="436">436</span> <span id="437">437</span> <span id="438">438</span> <span id="439">439</span> <span id="440">440</span> <span id="441">441</span> <span id="442">442</span> <span id="443">443</span> <span id="444">444</span> <span id="445">445</span> <span id="446">446</span> <span id="447">447</span> <span id="448">448</span> <span id="449">449</span> <span id="450">450</span> <span id="451">451</span> <span id="452">452</span> <span id="453">453</span> <span id="454">454</span> <span id="455">455</span> <span id="456">456</span> <span id="457">457</span> <span id="458">458</span> <span id="459">459</span> <span id="460">460</span> </pre><pre class="rust "> <span class="doccomment">//! Trailing Bit Manipulation (TBM) instruction set.</span> <span class="doccomment">//!</span> <span class="doccomment">//! The reference is [AMD64 Architecture Programmer's Manual, Volume 3:</span> <span class="doccomment">//! General-Purpose and System Instructions][amd64_ref].</span> <span class="doccomment">//!</span> <span class="doccomment">//! [Wikipedia][wikipedia_bmi] provides a quick overview of the available</span> <span class="doccomment">//! instructions.</span> <span class="doccomment">//!</span> <span class="doccomment">//! [amd64_ref]: http://support.amd.com/TechDocs/24594.pdf</span> <span class="doccomment">//! [wikipedia_bmi]:</span> <span class="doccomment">//! https://en.wikipedia.org/wiki/Bit_Manipulation_Instruction_Sets#ABM_.28Advanced_Bit_Manipulation.29</span> <span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">test</span>)]</span> <span class="kw">use</span> <span class="ident">stdsimd_test</span>::<span class="ident">assert_instr</span>; <span class="comment">// FIXME(blocked on #248)</span> <span class="comment">// TODO: LLVM-CODEGEN ERROR: LLVM ERROR: Cannot select:</span> <span class="comment">// intrinsic %llvm.x86.tbm.bextri.u32</span> <span class="comment">/* #[allow(dead_code)] extern "C" { #[link_name="llvm.x86.tbm.bextri.u32"] fn x86_tbm_bextri_u32(a: u32, y: u32) -> u32; #[link_name="llvm.x86.tbm.bextri.u64"] fn x86_tbm_bextri_u64(x: u64, y: u64) -> u64; } /// Extracts bits in range [`start`, `start` + `length`) from `a` into /// the least significant bits of the result. #[inline] #[target_feature(enable = "tbm")] pub fn _bextr_u32(a: u32, start: u32, len: u32) -> u32 { _bextr2_u32(a, (start & 0xffu32) | ((len & 0xffu32) << 8u32)) } /// Extracts bits in range [`start`, `start` + `length`) from `a` into /// the least significant bits of the result. #[inline] #[target_feature(enable = "tbm")] pub fn _bextr_u64(a: u64, start: u64, len: u64) -> u64 { _bextr2_u64(a, (start & 0xffu64) | ((len & 0xffu64) << 8u64)) } /// Extracts bits of `a` specified by `control` into /// the least significant bits of the result. /// /// Bits `[7,0]` of `control` specify the index to the first bit in the range to /// be extracted, and bits `[15,8]` specify the length of the range. #[inline] #[target_feature(enable = "tbm")] pub fn _bextr2_u32(a: u32, control: u32) -> u32 { unsafe { x86_tbm_bextri_u32(a, control) } } /// Extracts bits of `a` specified by `control` into /// the least significant bits of the result. /// /// Bits `[7,0]` of `control` specify the index to the first bit in the range to /// be extracted, and bits `[15,8]` specify the length of the range. #[inline] #[target_feature(enable = "tbm")] pub fn _bextr2_u64(a: u64, control: u64) -> u64 { unsafe { x86_tbm_bextri_u64(a, control) } } */</span> <span class="doccomment">/// Clears all bits below the least significant zero bit of `x`.</span> <span class="doccomment">///</span> <span class="doccomment">/// If there is no zero bit in `x`, it returns zero.</span> <span class="attribute">#[<span class="ident">inline</span>]</span> <span class="attribute">#[<span class="ident">target_feature</span>(<span class="ident">enable</span> <span class="op">=</span> <span class="string">"tbm"</span>)]</span> <span class="attribute">#[<span class="ident">cfg_attr</span>(<span class="ident">test</span>, <span class="ident">assert_instr</span>(<span class="ident">blcfill</span>))]</span> <span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"simd_x86"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.27.0"</span>)]</span> <span class="kw">pub</span> <span class="kw">unsafe</span> <span class="kw">fn</span> <span class="ident">_blcfill_u32</span>(<span class="ident">x</span>: <span class="ident">u32</span>) <span class="op">-></span> <span class="ident">u32</span> { <span class="ident">x</span> <span class="op">&</span> (<span class="ident">x</span>.<span class="ident">wrapping_add</span>(<span class="number">1</span>)) } <span class="doccomment">/// Clears all bits below the least significant zero bit of `x`.</span> <span class="doccomment">///</span> <span class="doccomment">/// If there is no zero bit in `x`, it returns zero.</span> <span class="attribute">#[<span class="ident">inline</span>]</span> <span class="attribute">#[<span class="ident">target_feature</span>(<span class="ident">enable</span> <span class="op">=</span> <span class="string">"tbm"</span>)]</span> <span class="attribute">#[<span class="ident">cfg_attr</span>(<span class="ident">test</span>, <span class="ident">assert_instr</span>(<span class="ident">blcfill</span>))]</span> <span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">not</span>(<span class="ident">target_arch</span> <span class="op">=</span> <span class="string">"x86"</span>))]</span> <span class="comment">// generates lots of instructions</span> <span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"simd_x86"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.27.0"</span>)]</span> <span class="kw">pub</span> <span class="kw">unsafe</span> <span class="kw">fn</span> <span class="ident">_blcfill_u64</span>(<span class="ident">x</span>: <span class="ident">u64</span>) <span class="op">-></span> <span class="ident">u64</span> { <span class="ident">x</span> <span class="op">&</span> (<span class="ident">x</span>.<span class="ident">wrapping_add</span>(<span class="number">1</span>)) } <span class="doccomment">/// Sets all bits of `x` to 1 except for the least significant zero bit.</span> <span class="doccomment">///</span> <span class="doccomment">/// If there is no zero bit in `x`, it sets all bits.</span> <span class="attribute">#[<span class="ident">inline</span>]</span> <span class="attribute">#[<span class="ident">target_feature</span>(<span class="ident">enable</span> <span class="op">=</span> <span class="string">"tbm"</span>)]</span> <span class="attribute">#[<span class="ident">cfg_attr</span>(<span class="ident">test</span>, <span class="ident">assert_instr</span>(<span class="ident">blci</span>))]</span> <span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"simd_x86"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.27.0"</span>)]</span> <span class="kw">pub</span> <span class="kw">unsafe</span> <span class="kw">fn</span> <span class="ident">_blci_u32</span>(<span class="ident">x</span>: <span class="ident">u32</span>) <span class="op">-></span> <span class="ident">u32</span> { <span class="ident">x</span> <span class="op">|</span> <span class="op">!</span>(<span class="ident">x</span>.<span class="ident">wrapping_add</span>(<span class="number">1</span>)) } <span class="doccomment">/// Sets all bits of `x` to 1 except for the least significant zero bit.</span> <span class="doccomment">///</span> <span class="doccomment">/// If there is no zero bit in `x`, it sets all bits.</span> <span class="attribute">#[<span class="ident">inline</span>]</span> <span class="attribute">#[<span class="ident">target_feature</span>(<span class="ident">enable</span> <span class="op">=</span> <span class="string">"tbm"</span>)]</span> <span class="attribute">#[<span class="ident">cfg_attr</span>(<span class="ident">test</span>, <span class="ident">assert_instr</span>(<span class="ident">blci</span>))]</span> <span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">not</span>(<span class="ident">target_arch</span> <span class="op">=</span> <span class="string">"x86"</span>))]</span> <span class="comment">// generates lots of instructions</span> <span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"simd_x86"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.27.0"</span>)]</span> <span class="kw">pub</span> <span class="kw">unsafe</span> <span class="kw">fn</span> <span class="ident">_blci_u64</span>(<span class="ident">x</span>: <span class="ident">u64</span>) <span class="op">-></span> <span class="ident">u64</span> { <span class="ident">x</span> <span class="op">|</span> <span class="op">!</span>(<span class="ident">x</span>.<span class="ident">wrapping_add</span>(<span class="number">1</span>)) } <span class="doccomment">/// Sets the least significant zero bit of `x` and clears all other bits.</span> <span class="doccomment">///</span> <span class="doccomment">/// If there is no zero bit in `x`, it returns zero.</span> <span class="attribute">#[<span class="ident">inline</span>]</span> <span class="attribute">#[<span class="ident">target_feature</span>(<span class="ident">enable</span> <span class="op">=</span> <span class="string">"tbm"</span>)]</span> <span class="attribute">#[<span class="ident">cfg_attr</span>(<span class="ident">test</span>, <span class="ident">assert_instr</span>(<span class="ident">blcic</span>))]</span> <span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"simd_x86"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.27.0"</span>)]</span> <span class="kw">pub</span> <span class="kw">unsafe</span> <span class="kw">fn</span> <span class="ident">_blcic_u32</span>(<span class="ident">x</span>: <span class="ident">u32</span>) <span class="op">-></span> <span class="ident">u32</span> { <span class="op">!</span><span class="ident">x</span> <span class="op">&</span> (<span class="ident">x</span>.<span class="ident">wrapping_add</span>(<span class="number">1</span>)) } <span class="doccomment">/// Sets the least significant zero bit of `x` and clears all other bits.</span> <span class="doccomment">///</span> <span class="doccomment">/// If there is no zero bit in `x`, it returns zero.</span> <span class="attribute">#[<span class="ident">inline</span>]</span> <span class="attribute">#[<span class="ident">target_feature</span>(<span class="ident">enable</span> <span class="op">=</span> <span class="string">"tbm"</span>)]</span> <span class="attribute">#[<span class="ident">cfg_attr</span>(<span class="ident">test</span>, <span class="ident">assert_instr</span>(<span class="ident">blcic</span>))]</span> <span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">not</span>(<span class="ident">target_arch</span> <span class="op">=</span> <span class="string">"x86"</span>))]</span> <span class="comment">// generates lots of instructions</span> <span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"simd_x86"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.27.0"</span>)]</span> <span class="kw">pub</span> <span class="kw">unsafe</span> <span class="kw">fn</span> <span class="ident">_blcic_u64</span>(<span class="ident">x</span>: <span class="ident">u64</span>) <span class="op">-></span> <span class="ident">u64</span> { <span class="op">!</span><span class="ident">x</span> <span class="op">&</span> (<span class="ident">x</span>.<span class="ident">wrapping_add</span>(<span class="number">1</span>)) } <span class="doccomment">/// Sets the least significant zero bit of `x` and clears all bits above</span> <span class="doccomment">/// that bit.</span> <span class="doccomment">///</span> <span class="doccomment">/// If there is no zero bit in `x`, it sets all the bits.</span> <span class="attribute">#[<span class="ident">inline</span>]</span> <span class="attribute">#[<span class="ident">target_feature</span>(<span class="ident">enable</span> <span class="op">=</span> <span class="string">"tbm"</span>)]</span> <span class="attribute">#[<span class="ident">cfg_attr</span>(<span class="ident">test</span>, <span class="ident">assert_instr</span>(<span class="ident">blcmsk</span>))]</span> <span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"simd_x86"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.27.0"</span>)]</span> <span class="kw">pub</span> <span class="kw">unsafe</span> <span class="kw">fn</span> <span class="ident">_blcmsk_u32</span>(<span class="ident">x</span>: <span class="ident">u32</span>) <span class="op">-></span> <span class="ident">u32</span> { <span class="ident">x</span> <span class="op">^</span> (<span class="ident">x</span>.<span class="ident">wrapping_add</span>(<span class="number">1</span>)) } <span class="doccomment">/// Sets the least significant zero bit of `x` and clears all bits above</span> <span class="doccomment">/// that bit.</span> <span class="doccomment">///</span> <span class="doccomment">/// If there is no zero bit in `x`, it sets all the bits.</span> <span class="attribute">#[<span class="ident">inline</span>]</span> <span class="attribute">#[<span class="ident">target_feature</span>(<span class="ident">enable</span> <span class="op">=</span> <span class="string">"tbm"</span>)]</span> <span class="attribute">#[<span class="ident">cfg_attr</span>(<span class="ident">test</span>, <span class="ident">assert_instr</span>(<span class="ident">blcmsk</span>))]</span> <span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">not</span>(<span class="ident">target_arch</span> <span class="op">=</span> <span class="string">"x86"</span>))]</span> <span class="comment">// generates lots of instructions</span> <span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"simd_x86"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.27.0"</span>)]</span> <span class="kw">pub</span> <span class="kw">unsafe</span> <span class="kw">fn</span> <span class="ident">_blcmsk_u64</span>(<span class="ident">x</span>: <span class="ident">u64</span>) <span class="op">-></span> <span class="ident">u64</span> { <span class="ident">x</span> <span class="op">^</span> (<span class="ident">x</span>.<span class="ident">wrapping_add</span>(<span class="number">1</span>)) } <span class="doccomment">/// Sets the least significant zero bit of `x`.</span> <span class="doccomment">///</span> <span class="doccomment">/// If there is no zero bit in `x`, it returns `x`.</span> <span class="attribute">#[<span class="ident">inline</span>]</span> <span class="attribute">#[<span class="ident">target_feature</span>(<span class="ident">enable</span> <span class="op">=</span> <span class="string">"tbm"</span>)]</span> <span class="attribute">#[<span class="ident">cfg_attr</span>(<span class="ident">test</span>, <span class="ident">assert_instr</span>(<span class="ident">blcs</span>))]</span> <span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"simd_x86"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.27.0"</span>)]</span> <span class="kw">pub</span> <span class="kw">unsafe</span> <span class="kw">fn</span> <span class="ident">_blcs_u32</span>(<span class="ident">x</span>: <span class="ident">u32</span>) <span class="op">-></span> <span class="ident">u32</span> { <span class="ident">x</span> <span class="op">|</span> (<span class="ident">x</span>.<span class="ident">wrapping_add</span>(<span class="number">1</span>)) } <span class="doccomment">/// Sets the least significant zero bit of `x`.</span> <span class="doccomment">///</span> <span class="doccomment">/// If there is no zero bit in `x`, it returns `x`.</span> <span class="attribute">#[<span class="ident">inline</span>]</span> <span class="attribute">#[<span class="ident">target_feature</span>(<span class="ident">enable</span> <span class="op">=</span> <span class="string">"tbm"</span>)]</span> <span class="attribute">#[<span class="ident">cfg_attr</span>(<span class="ident">test</span>, <span class="ident">assert_instr</span>(<span class="ident">blcs</span>))]</span> <span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">not</span>(<span class="ident">target_arch</span> <span class="op">=</span> <span class="string">"x86"</span>))]</span> <span class="comment">// generates lots of instructions</span> <span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"simd_x86"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.27.0"</span>)]</span> <span class="kw">pub</span> <span class="kw">unsafe</span> <span class="kw">fn</span> <span class="ident">_blcs_u64</span>(<span class="ident">x</span>: <span class="ident">u64</span>) <span class="op">-></span> <span class="ident">u64</span> { <span class="ident">x</span> <span class="op">|</span> <span class="ident">x</span>.<span class="ident">wrapping_add</span>(<span class="number">1</span>) } <span class="doccomment">/// Sets all bits of `x` below the least significant one.</span> <span class="doccomment">///</span> <span class="doccomment">/// If there is no set bit in `x`, it sets all the bits.</span> <span class="attribute">#[<span class="ident">inline</span>]</span> <span class="attribute">#[<span class="ident">target_feature</span>(<span class="ident">enable</span> <span class="op">=</span> <span class="string">"tbm"</span>)]</span> <span class="attribute">#[<span class="ident">cfg_attr</span>(<span class="ident">test</span>, <span class="ident">assert_instr</span>(<span class="ident">blsfill</span>))]</span> <span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"simd_x86"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.27.0"</span>)]</span> <span class="kw">pub</span> <span class="kw">unsafe</span> <span class="kw">fn</span> <span class="ident">_blsfill_u32</span>(<span class="ident">x</span>: <span class="ident">u32</span>) <span class="op">-></span> <span class="ident">u32</span> { <span class="ident">x</span> <span class="op">|</span> (<span class="ident">x</span>.<span class="ident">wrapping_sub</span>(<span class="number">1</span>)) } <span class="doccomment">/// Sets all bits of `x` below the least significant one.</span> <span class="doccomment">///</span> <span class="doccomment">/// If there is no set bit in `x`, it sets all the bits.</span> <span class="attribute">#[<span class="ident">inline</span>]</span> <span class="attribute">#[<span class="ident">target_feature</span>(<span class="ident">enable</span> <span class="op">=</span> <span class="string">"tbm"</span>)]</span> <span class="attribute">#[<span class="ident">cfg_attr</span>(<span class="ident">test</span>, <span class="ident">assert_instr</span>(<span class="ident">blsfill</span>))]</span> <span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">not</span>(<span class="ident">target_arch</span> <span class="op">=</span> <span class="string">"x86"</span>))]</span> <span class="comment">// generates lots of instructions</span> <span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"simd_x86"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.27.0"</span>)]</span> <span class="kw">pub</span> <span class="kw">unsafe</span> <span class="kw">fn</span> <span class="ident">_blsfill_u64</span>(<span class="ident">x</span>: <span class="ident">u64</span>) <span class="op">-></span> <span class="ident">u64</span> { <span class="ident">x</span> <span class="op">|</span> (<span class="ident">x</span>.<span class="ident">wrapping_sub</span>(<span class="number">1</span>)) } <span class="doccomment">/// Clears least significant bit and sets all other bits.</span> <span class="doccomment">///</span> <span class="doccomment">/// If there is no set bit in `x`, it sets all the bits.</span> <span class="attribute">#[<span class="ident">inline</span>]</span> <span class="attribute">#[<span class="ident">target_feature</span>(<span class="ident">enable</span> <span class="op">=</span> <span class="string">"tbm"</span>)]</span> <span class="attribute">#[<span class="ident">cfg_attr</span>(<span class="ident">test</span>, <span class="ident">assert_instr</span>(<span class="ident">blsic</span>))]</span> <span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"simd_x86"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.27.0"</span>)]</span> <span class="kw">pub</span> <span class="kw">unsafe</span> <span class="kw">fn</span> <span class="ident">_blsic_u32</span>(<span class="ident">x</span>: <span class="ident">u32</span>) <span class="op">-></span> <span class="ident">u32</span> { <span class="op">!</span><span class="ident">x</span> <span class="op">|</span> (<span class="ident">x</span>.<span class="ident">wrapping_sub</span>(<span class="number">1</span>)) } <span class="doccomment">/// Clears least significant bit and sets all other bits.</span> <span class="doccomment">///</span> <span class="doccomment">/// If there is no set bit in `x`, it sets all the bits.</span> <span class="attribute">#[<span class="ident">inline</span>]</span> <span class="attribute">#[<span class="ident">target_feature</span>(<span class="ident">enable</span> <span class="op">=</span> <span class="string">"tbm"</span>)]</span> <span class="attribute">#[<span class="ident">cfg_attr</span>(<span class="ident">test</span>, <span class="ident">assert_instr</span>(<span class="ident">blsic</span>))]</span> <span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">not</span>(<span class="ident">target_arch</span> <span class="op">=</span> <span class="string">"x86"</span>))]</span> <span class="comment">// generates lots of instructions</span> <span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"simd_x86"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.27.0"</span>)]</span> <span class="kw">pub</span> <span class="kw">unsafe</span> <span class="kw">fn</span> <span class="ident">_blsic_u64</span>(<span class="ident">x</span>: <span class="ident">u64</span>) <span class="op">-></span> <span class="ident">u64</span> { <span class="op">!</span><span class="ident">x</span> <span class="op">|</span> (<span class="ident">x</span>.<span class="ident">wrapping_sub</span>(<span class="number">1</span>)) } <span class="doccomment">/// Clears all bits below the least significant zero of `x` and sets all other</span> <span class="doccomment">/// bits.</span> <span class="doccomment">///</span> <span class="doccomment">/// If the least significant bit of `x` is 0, it sets all bits.</span> <span class="attribute">#[<span class="ident">inline</span>]</span> <span class="attribute">#[<span class="ident">target_feature</span>(<span class="ident">enable</span> <span class="op">=</span> <span class="string">"tbm"</span>)]</span> <span class="attribute">#[<span class="ident">cfg_attr</span>(<span class="ident">test</span>, <span class="ident">assert_instr</span>(<span class="ident">t1mskc</span>))]</span> <span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"simd_x86"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.27.0"</span>)]</span> <span class="kw">pub</span> <span class="kw">unsafe</span> <span class="kw">fn</span> <span class="ident">_t1mskc_u32</span>(<span class="ident">x</span>: <span class="ident">u32</span>) <span class="op">-></span> <span class="ident">u32</span> { <span class="op">!</span><span class="ident">x</span> <span class="op">|</span> (<span class="ident">x</span>.<span class="ident">wrapping_add</span>(<span class="number">1</span>)) } <span class="doccomment">/// Clears all bits below the least significant zero of `x` and sets all other</span> <span class="doccomment">/// bits.</span> <span class="doccomment">///</span> <span class="doccomment">/// If the least significant bit of `x` is 0, it sets all bits.</span> <span class="attribute">#[<span class="ident">inline</span>]</span> <span class="attribute">#[<span class="ident">target_feature</span>(<span class="ident">enable</span> <span class="op">=</span> <span class="string">"tbm"</span>)]</span> <span class="attribute">#[<span class="ident">cfg_attr</span>(<span class="ident">test</span>, <span class="ident">assert_instr</span>(<span class="ident">t1mskc</span>))]</span> <span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">not</span>(<span class="ident">target_arch</span> <span class="op">=</span> <span class="string">"x86"</span>))]</span> <span class="comment">// generates lots of instructions</span> <span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"simd_x86"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.27.0"</span>)]</span> <span class="kw">pub</span> <span class="kw">unsafe</span> <span class="kw">fn</span> <span class="ident">_t1mskc_u64</span>(<span class="ident">x</span>: <span class="ident">u64</span>) <span class="op">-></span> <span class="ident">u64</span> { <span class="op">!</span><span class="ident">x</span> <span class="op">|</span> (<span class="ident">x</span>.<span class="ident">wrapping_add</span>(<span class="number">1</span>)) } <span class="doccomment">/// Sets all bits below the least significant one of `x` and clears all other</span> <span class="doccomment">/// bits.</span> <span class="doccomment">///</span> <span class="doccomment">/// If the least significant bit of `x` is 1, it returns zero.</span> <span class="attribute">#[<span class="ident">inline</span>]</span> <span class="attribute">#[<span class="ident">target_feature</span>(<span class="ident">enable</span> <span class="op">=</span> <span class="string">"tbm"</span>)]</span> <span class="attribute">#[<span class="ident">cfg_attr</span>(<span class="ident">test</span>, <span class="ident">assert_instr</span>(<span class="ident">tzmsk</span>))]</span> <span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"simd_x86"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.27.0"</span>)]</span> <span class="kw">pub</span> <span class="kw">unsafe</span> <span class="kw">fn</span> <span class="ident">_tzmsk_u32</span>(<span class="ident">x</span>: <span class="ident">u32</span>) <span class="op">-></span> <span class="ident">u32</span> { <span class="op">!</span><span class="ident">x</span> <span class="op">&</span> (<span class="ident">x</span>.<span class="ident">wrapping_sub</span>(<span class="number">1</span>)) } <span class="doccomment">/// Sets all bits below the least significant one of `x` and clears all other</span> <span class="doccomment">/// bits.</span> <span class="doccomment">///</span> <span class="doccomment">/// If the least significant bit of `x` is 1, it returns zero.</span> <span class="attribute">#[<span class="ident">inline</span>]</span> <span class="attribute">#[<span class="ident">target_feature</span>(<span class="ident">enable</span> <span class="op">=</span> <span class="string">"tbm"</span>)]</span> <span class="attribute">#[<span class="ident">cfg_attr</span>(<span class="ident">test</span>, <span class="ident">assert_instr</span>(<span class="ident">tzmsk</span>))]</span> <span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">not</span>(<span class="ident">target_arch</span> <span class="op">=</span> <span class="string">"x86"</span>))]</span> <span class="comment">// generates lots of instructions</span> <span class="attribute">#[<span class="ident">stable</span>(<span class="ident">feature</span> <span class="op">=</span> <span class="string">"simd_x86"</span>, <span class="ident">since</span> <span class="op">=</span> <span class="string">"1.27.0"</span>)]</span> <span class="kw">pub</span> <span class="kw">unsafe</span> <span class="kw">fn</span> <span class="ident">_tzmsk_u64</span>(<span class="ident">x</span>: <span class="ident">u64</span>) <span class="op">-></span> <span class="ident">u64</span> { <span class="op">!</span><span class="ident">x</span> <span class="op">&</span> (<span class="ident">x</span>.<span class="ident">wrapping_sub</span>(<span class="number">1</span>)) } <span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">test</span>)]</span> <span class="kw">mod</span> <span class="ident">tests</span> { <span class="kw">use</span> <span class="ident">stdsimd_test</span>::<span class="ident">simd_test</span>; <span class="kw">use</span> <span class="ident">coresimd</span>::<span class="ident">x86</span>::<span class="kw-2">*</span>; <span class="comment">/* #[simd_test(enable = "tbm")] unsafe fn test_bextr_u32() { assert_eq!(_bextr_u32(0b0101_0000u32, 4, 4), 0b0000_0101u32); } #[simd_test(enable = "tbm")] unsafe fn test_bextr_u64() { assert_eq!(_bextr_u64(0b0101_0000u64, 4, 4), 0b0000_0101u64); } */</span> <span class="attribute">#[<span class="ident">simd_test</span>(<span class="ident">enable</span> <span class="op">=</span> <span class="string">"tbm"</span>)]</span> <span class="kw">unsafe</span> <span class="kw">fn</span> <span class="ident">test_blcfill_u32</span>() { <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">_blcfill_u32</span>(<span class="number">0b0101_0111u32</span>), <span class="number">0b0101_0000u32</span>); <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">_blcfill_u32</span>(<span class="number">0b1111_1111u32</span>), <span class="number">0u32</span>); } <span class="attribute">#[<span class="ident">simd_test</span>(<span class="ident">enable</span> <span class="op">=</span> <span class="string">"tbm"</span>)]</span> <span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">not</span>(<span class="ident">target_arch</span> <span class="op">=</span> <span class="string">"x86"</span>))]</span> <span class="kw">unsafe</span> <span class="kw">fn</span> <span class="ident">test_blcfill_u64</span>() { <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">_blcfill_u64</span>(<span class="number">0b0101_0111u64</span>), <span class="number">0b0101_0000u64</span>); <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">_blcfill_u64</span>(<span class="number">0b1111_1111u64</span>), <span class="number">0u64</span>); } <span class="attribute">#[<span class="ident">simd_test</span>(<span class="ident">enable</span> <span class="op">=</span> <span class="string">"tbm"</span>)]</span> <span class="kw">unsafe</span> <span class="kw">fn</span> <span class="ident">test_blci_u32</span>() { <span class="macro">assert_eq</span><span class="macro">!</span>( <span class="ident">_blci_u32</span>(<span class="number">0b0101_0000u32</span>), <span class="number">0b1111_1111_1111_1111_1111_1111_1111_1110u32</span> ); <span class="macro">assert_eq</span><span class="macro">!</span>( <span class="ident">_blci_u32</span>(<span class="number">0b1111_1111u32</span>), <span class="number">0b1111_1111_1111_1111_1111_1110_1111_1111u32</span> ); } <span class="attribute">#[<span class="ident">simd_test</span>(<span class="ident">enable</span> <span class="op">=</span> <span class="string">"tbm"</span>)]</span> <span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">not</span>(<span class="ident">target_arch</span> <span class="op">=</span> <span class="string">"x86"</span>))]</span> <span class="attribute">#[<span class="ident">cfg_attr</span>(<span class="ident">rustfmt</span>, <span class="ident">rustfmt_skip</span>)]</span> <span class="kw">unsafe</span> <span class="kw">fn</span> <span class="ident">test_blci_u64</span>() { <span class="macro">assert_eq</span><span class="macro">!</span>( <span class="ident">_blci_u64</span>(<span class="number">0b0101_0000u64</span>), <span class="number">0b1111_1111_1111_1111_1111_1111_1111_1111_1111_1111_1111_1111_1111_1111_1111_1110u64</span> ); <span class="macro">assert_eq</span><span class="macro">!</span>( <span class="ident">_blci_u64</span>(<span class="number">0b1111_1111u64</span>), <span class="number">0b1111_1111_1111_1111_1111_1111_1111_1111_1111_1111_1111_1111_1111_1110_1111_1111u64</span> ); } <span class="attribute">#[<span class="ident">simd_test</span>(<span class="ident">enable</span> <span class="op">=</span> <span class="string">"tbm"</span>)]</span> <span class="kw">unsafe</span> <span class="kw">fn</span> <span class="ident">test_blcic_u32</span>() { <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">_blcic_u32</span>(<span class="number">0b0101_0001u32</span>), <span class="number">0b0000_0010u32</span>); <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">_blcic_u32</span>(<span class="number">0b1111_1111u32</span>), <span class="number">0b1_0000_0000u32</span>); } <span class="attribute">#[<span class="ident">simd_test</span>(<span class="ident">enable</span> <span class="op">=</span> <span class="string">"tbm"</span>)]</span> <span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">not</span>(<span class="ident">target_arch</span> <span class="op">=</span> <span class="string">"x86"</span>))]</span> <span class="kw">unsafe</span> <span class="kw">fn</span> <span class="ident">test_blcic_u64</span>() { <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">_blcic_u64</span>(<span class="number">0b0101_0001u64</span>), <span class="number">0b0000_0010u64</span>); <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">_blcic_u64</span>(<span class="number">0b1111_1111u64</span>), <span class="number">0b1_0000_0000u64</span>); } <span class="attribute">#[<span class="ident">simd_test</span>(<span class="ident">enable</span> <span class="op">=</span> <span class="string">"tbm"</span>)]</span> <span class="kw">unsafe</span> <span class="kw">fn</span> <span class="ident">test_blcmsk_u32</span>() { <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">_blcmsk_u32</span>(<span class="number">0b0101_0001u32</span>), <span class="number">0b0000_0011u32</span>); <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">_blcmsk_u32</span>(<span class="number">0b1111_1111u32</span>), <span class="number">0b1_1111_1111u32</span>); } <span class="attribute">#[<span class="ident">simd_test</span>(<span class="ident">enable</span> <span class="op">=</span> <span class="string">"tbm"</span>)]</span> <span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">not</span>(<span class="ident">target_arch</span> <span class="op">=</span> <span class="string">"x86"</span>))]</span> <span class="kw">unsafe</span> <span class="kw">fn</span> <span class="ident">test_blcmsk_u64</span>() { <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">_blcmsk_u64</span>(<span class="number">0b0101_0001u64</span>), <span class="number">0b0000_0011u64</span>); <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">_blcmsk_u64</span>(<span class="number">0b1111_1111u64</span>), <span class="number">0b1_1111_1111u64</span>); } <span class="attribute">#[<span class="ident">simd_test</span>(<span class="ident">enable</span> <span class="op">=</span> <span class="string">"tbm"</span>)]</span> <span class="kw">unsafe</span> <span class="kw">fn</span> <span class="ident">test_blcs_u32</span>() { <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">_blcs_u32</span>(<span class="number">0b0101_0001u32</span>), <span class="number">0b0101_0011u32</span>); <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">_blcs_u32</span>(<span class="number">0b1111_1111u32</span>), <span class="number">0b1_1111_1111u32</span>); } <span class="attribute">#[<span class="ident">simd_test</span>(<span class="ident">enable</span> <span class="op">=</span> <span class="string">"tbm"</span>)]</span> <span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">not</span>(<span class="ident">target_arch</span> <span class="op">=</span> <span class="string">"x86"</span>))]</span> <span class="kw">unsafe</span> <span class="kw">fn</span> <span class="ident">test_blcs_u64</span>() { <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">_blcs_u64</span>(<span class="number">0b0101_0001u64</span>), <span class="number">0b0101_0011u64</span>); <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">_blcs_u64</span>(<span class="number">0b1111_1111u64</span>), <span class="number">0b1_1111_1111u64</span>); } <span class="attribute">#[<span class="ident">simd_test</span>(<span class="ident">enable</span> <span class="op">=</span> <span class="string">"tbm"</span>)]</span> <span class="kw">unsafe</span> <span class="kw">fn</span> <span class="ident">test_blsfill_u32</span>() { <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">_blsfill_u32</span>(<span class="number">0b0101_0100u32</span>), <span class="number">0b0101_0111u32</span>); <span class="macro">assert_eq</span><span class="macro">!</span>( <span class="ident">_blsfill_u32</span>(<span class="number">0u32</span>), <span class="number">0b1111_1111_1111_1111_1111_1111_1111_1111u32</span> ); } <span class="attribute">#[<span class="ident">simd_test</span>(<span class="ident">enable</span> <span class="op">=</span> <span class="string">"tbm"</span>)]</span> <span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">not</span>(<span class="ident">target_arch</span> <span class="op">=</span> <span class="string">"x86"</span>))]</span> <span class="attribute">#[<span class="ident">cfg_attr</span>(<span class="ident">rustfmt</span>, <span class="ident">rustfmt_skip</span>)]</span> <span class="kw">unsafe</span> <span class="kw">fn</span> <span class="ident">test_blsfill_u64</span>() { <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">_blsfill_u64</span>(<span class="number">0b0101_0100u64</span>), <span class="number">0b0101_0111u64</span>); <span class="macro">assert_eq</span><span class="macro">!</span>( <span class="ident">_blsfill_u64</span>(<span class="number">0u64</span>), <span class="number">0b1111_1111_1111_1111_1111_1111_1111_1111_1111_1111_1111_1111_1111_1111_1111_1111u64</span> ); } <span class="attribute">#[<span class="ident">simd_test</span>(<span class="ident">enable</span> <span class="op">=</span> <span class="string">"tbm"</span>)]</span> <span class="kw">unsafe</span> <span class="kw">fn</span> <span class="ident">test_blsic_u32</span>() { <span class="macro">assert_eq</span><span class="macro">!</span>( <span class="ident">_blsic_u32</span>(<span class="number">0b0101_0100u32</span>), <span class="number">0b1111_1111_1111_1111_1111_1111_1111_1011u32</span> ); <span class="macro">assert_eq</span><span class="macro">!</span>( <span class="ident">_blsic_u32</span>(<span class="number">0u32</span>), <span class="number">0b1111_1111_1111_1111_1111_1111_1111_1111u32</span> ); } <span class="attribute">#[<span class="ident">simd_test</span>(<span class="ident">enable</span> <span class="op">=</span> <span class="string">"tbm"</span>)]</span> <span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">not</span>(<span class="ident">target_arch</span> <span class="op">=</span> <span class="string">"x86"</span>))]</span> <span class="attribute">#[<span class="ident">cfg_attr</span>(<span class="ident">rustfmt</span>, <span class="ident">rustfmt_skip</span>)]</span> <span class="kw">unsafe</span> <span class="kw">fn</span> <span class="ident">test_blsic_u64</span>() { <span class="macro">assert_eq</span><span class="macro">!</span>( <span class="ident">_blsic_u64</span>(<span class="number">0b0101_0100u64</span>), <span class="number">0b1111_1111_1111_1111_1111_1111_1111_1111_1111_1111_1111_1111_1111_1111_1111_1011u64</span> ); <span class="macro">assert_eq</span><span class="macro">!</span>( <span class="ident">_blsic_u64</span>(<span class="number">0u64</span>), <span class="number">0b1111_1111_1111_1111_1111_1111_1111_1111_1111_1111_1111_1111_1111_1111_1111_1111u64</span> ); } <span class="attribute">#[<span class="ident">simd_test</span>(<span class="ident">enable</span> <span class="op">=</span> <span class="string">"tbm"</span>)]</span> <span class="kw">unsafe</span> <span class="kw">fn</span> <span class="ident">test_t1mskc_u32</span>() { <span class="macro">assert_eq</span><span class="macro">!</span>( <span class="ident">_t1mskc_u32</span>(<span class="number">0b0101_0111u32</span>), <span class="number">0b1111_1111_1111_1111_1111_1111_1111_1000u32</span> ); <span class="macro">assert_eq</span><span class="macro">!</span>( <span class="ident">_t1mskc_u32</span>(<span class="number">0u32</span>), <span class="number">0b1111_1111_1111_1111_1111_1111_1111_1111u32</span> ); } <span class="attribute">#[<span class="ident">simd_test</span>(<span class="ident">enable</span> <span class="op">=</span> <span class="string">"tbm"</span>)]</span> <span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">not</span>(<span class="ident">target_arch</span> <span class="op">=</span> <span class="string">"x86"</span>))]</span> <span class="attribute">#[<span class="ident">cfg_attr</span>(<span class="ident">rustfmt</span>, <span class="ident">rustfmt_skip</span>)]</span> <span class="kw">unsafe</span> <span class="kw">fn</span> <span class="ident">test_t1mksc_u64</span>() { <span class="macro">assert_eq</span><span class="macro">!</span>( <span class="ident">_t1mskc_u64</span>(<span class="number">0b0101_0111u64</span>), <span class="number">0b1111_1111_1111_1111_1111_1111_1111_1111_1111_1111_1111_1111_1111_1111_1111_1000u64</span> ); <span class="macro">assert_eq</span><span class="macro">!</span>( <span class="ident">_t1mskc_u64</span>(<span class="number">0u64</span>), <span class="number">0b1111_1111_1111_1111_1111_1111_1111_1111_1111_1111_1111_1111_1111_1111_1111_1111u64</span> ); } <span class="attribute">#[<span class="ident">simd_test</span>(<span class="ident">enable</span> <span class="op">=</span> <span class="string">"tbm"</span>)]</span> <span class="kw">unsafe</span> <span class="kw">fn</span> <span class="ident">test_tzmsk_u32</span>() { <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">_tzmsk_u32</span>(<span class="number">0b0101_1000u32</span>), <span class="number">0b0000_0111u32</span>); <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">_tzmsk_u32</span>(<span class="number">0b0101_1001u32</span>), <span class="number">0b0000_0000u32</span>); } <span class="attribute">#[<span class="ident">simd_test</span>(<span class="ident">enable</span> <span class="op">=</span> <span class="string">"tbm"</span>)]</span> <span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">not</span>(<span class="ident">target_arch</span> <span class="op">=</span> <span class="string">"x86"</span>))]</span> <span class="kw">unsafe</span> <span class="kw">fn</span> <span class="ident">test_tzmsk_u64</span>() { <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">_tzmsk_u64</span>(<span class="number">0b0101_1000u64</span>), <span class="number">0b0000_0111u64</span>); <span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">_tzmsk_u64</span>(<span class="number">0b0101_1001u64</span>), <span class="number">0b0000_0000u64</span>); } } </pre> </section><section id="search" class="content hidden"></section><section class="footer"></section><aside id="help" class="hidden"><div><h1 class="hidden">Help</h1><div class="shortcuts"><h2>Keyboard Shortcuts</h2><dl><dt><kbd>?</kbd></dt><dd>Show this help dialog</dd><dt><kbd>S</kbd></dt><dd>Focus the search field</dd><dt><kbd>↑</kbd></dt><dd>Move up in search results</dd><dt><kbd>↓</kbd></dt><dd>Move down in search results</dd><dt><kbd>↹</kbd></dt><dd>Switch tab</dd><dt><kbd>⏎</kbd></dt><dd>Go to active search result</dd><dt><kbd>+</kbd></dt><dd>Expand all sections</dd><dt><kbd>-</kbd></dt><dd>Collapse all sections</dd></dl></div><div class="infos"><h2>Search Tricks</h2><p>Prefix searches with a type followed by a colon (e.g. <code>fn:</code>) to restrict the search to a given type.</p><p>Accepted types are: <code>fn</code>, <code>mod</code>, <code>struct</code>, <code>enum</code>, <code>trait</code>, <code>type</code>, <code>macro</code>, and <code>const</code>.</p><p>Search functions by type signature (e.g. <code>vec -> usize</code> or <code>* -> vec</code>)</p><p>Search multiple things at once by splitting your query with comma (e.g. <code>str,u8</code> or 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