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7.9 KiB
HTML
176 lines
No EOL
7.9 KiB
HTML
<!DOCTYPE html>
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<html lang="en">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<meta name="generator" content="rustdoc">
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<meta name="description" content="API documentation for the Rust `ryu` crate.">
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<meta name="keywords" content="rust, rustlang, rust-lang, ryu">
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<title>ryu - Rust</title>
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<link rel="stylesheet" type="text/css" href="../normalize.css">
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<link rel="stylesheet" type="text/css" href="../rustdoc.css" id="mainThemeStyle">
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<body class="rustdoc mod">
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<!--[if lte IE 8]>
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<div class="warning">
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This old browser is unsupported and will most likely display funky
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things.
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</div>
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<![endif]-->
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<nav class="sidebar">
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<div class="sidebar-menu">☰</div>
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<p class='location'>Crate ryu</p><div class="sidebar-elems"><div class="block items"><ul><li><a href="#modules">Modules</a></li><li><a href="#structs">Structs</a></li><li><a href="#traits">Traits</a></li></ul></div><p class='location'></p><script>window.sidebarCurrent = {name: 'ryu', ty: 'mod', relpath: '../'};</script></div>
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<nav class="sub">
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<form class="search-form js-only">
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<div class="search-container">
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<input class="search-input" name="search"
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autocomplete="off"
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placeholder="Click or press ‘S’ to search, ‘?’ for more options…"
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type="search">
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</div>
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</form>
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</nav>
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<section id='main' class="content">
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<h1 class='fqn'><span class='in-band'>Crate <a class="mod" href=''>ryu</a></span><span class='out-of-band'><span id='render-detail'>
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<a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">
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[<span class='inner'>−</span>]
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</a>
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</span><a class='srclink' href='../src/ryu/lib.rs.html#1-68' title='goto source code'>[src]</a></span></h1>
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<div class='docblock'><p>Pure Rust implementation of Ryū, an algorithm to quickly convert floating
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point numbers to decimal strings.</p>
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<p>The PLDI'18 paper <a href="https://dl.acm.org/citation.cfm?id=3192369"><em>Ryū: fast float-to-string conversion</em></a> by Ulf
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Adams includes a complete correctness proof of the algorithm. The paper is
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available under the creative commons CC-BY-SA license.</p>
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<p>This Rust implementation is a line-by-line port of Ulf Adams' implementation
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in C, <a href="https://github.com/ulfjack/ryu">https://github.com/ulfjack/ryu</a>. The <a href="raw/index.html"><code>ryu::raw</code></a>
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module exposes exactly the API and formatting of the C implementation as
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unsafe pure Rust functions. There is additionally a safe API as demonstrated
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in the example code below. The safe API uses the same underlying Ryū
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algorithm but diverges from the formatting of the C implementation to
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produce more human-readable output, for example <code>0.3</code> rather than <code>3E-1</code>.</p>
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<h1 id="examples" class="section-header"><a href="#examples">Examples</a></h1>
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<pre class="rust rust-example-rendered">
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<span class="kw">extern</span> <span class="kw">crate</span> <span class="ident">ryu</span>;
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<span class="kw">fn</span> <span class="ident">main</span>() {
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<span class="kw">let</span> <span class="kw-2">mut</span> <span class="ident">buffer</span> <span class="op">=</span> <span class="ident">ryu</span>::<span class="ident">Buffer</span>::<span class="ident">new</span>();
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<span class="kw">let</span> <span class="ident">printed</span> <span class="op">=</span> <span class="ident">buffer</span>.<span class="ident">format</span>(<span class="number">1.234</span>);
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<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">printed</span>, <span class="string">"1.234"</span>);
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}</pre>
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</div><h2 id='modules' class='section-header'><a href="#modules">Modules</a></h2>
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<table>
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<tr class=' module-item'>
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<td><a class="mod" href="raw/index.html"
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title='mod ryu::raw'>raw</a></td>
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<td class='docblock-short'>
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<p>Unsafe functions that exactly mirror the API of the C implementation of Ryū.</p>
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</td>
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</tr></table><h2 id='structs' class='section-header'><a href="#structs">Structs</a></h2>
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<table>
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<tr class=' module-item'>
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<td><a class="struct" href="struct.Buffer.html"
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title='struct ryu::Buffer'>Buffer</a></td>
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<td class='docblock-short'>
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<p>Safe API for formatting floating point numbers to text.</p>
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</td>
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</tr></table><h2 id='traits' class='section-header'><a href="#traits">Traits</a></h2>
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<table>
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<tr class=' module-item'>
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<td><a class="trait" href="trait.Float.html"
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title='trait ryu::Float'>Float</a></td>
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<td class='docblock-short'>
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<p>A floating point number, f32 or f64, that can be written into a
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[<code>ryu::Buffer</code>][Buffer].</p>
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</td>
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</tr></table></section>
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<section id='search' class="content hidden"></section>
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<section class="footer"></section>
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<aside id="help" class="hidden">
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<div>
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<h1 class="hidden">Help</h1>
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<div class="shortcuts">
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<h2>Keyboard Shortcuts</h2>
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<dt><kbd>?</kbd></dt>
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<dd>Show this help dialog</dd>
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<dd>Focus the search field</dd>
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<dd>Move up in search results</dd>
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</dl>
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</div>
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<div class="infos">
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<h2>Search Tricks</h2>
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<p>
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Prefix searches with a type followed by a colon (e.g.
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<code>fn:</code>) to restrict the search to a given type.
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</p>
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<p>
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Accepted types are: <code>fn</code>, <code>mod</code>,
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<code>struct</code>, <code>enum</code>,
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<code>trait</code>, <code>type</code>, <code>macro</code>,
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and <code>const</code>.
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</p>
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<p>
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Search functions by type signature (e.g.
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<code>vec -> usize</code> or <code>* -> vec</code>)
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</p>
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</div>
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</div>
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</aside>
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<script>
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window.rootPath = "../";
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window.currentCrate = "ryu";
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