pnmixer-rust/num_traits/identities/trait.Zero.html

149 lines
8.7 KiB
HTML
Raw Normal View History

2017-07-14 23:30:16 +00:00
<!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="API documentation for the Rust `Zero` trait in crate `num_traits`.">
<meta name="keywords" content="rust, rustlang, rust-lang, Zero">
<title>num_traits::identities::Zero - Rust</title>
<link rel="stylesheet" type="text/css" href="../../normalize.css">
<link rel="stylesheet" type="text/css" href="../../rustdoc.css">
<link rel="stylesheet" type="text/css" href="../../main.css">
<link rel="shortcut icon" href="https://rust-num.github.io/num/favicon.ico">
</head>
<body class="rustdoc trait">
<!--[if lte IE 8]>
<div class="warning">
This old browser is unsupported and will most likely display funky
things.
</div>
<![endif]-->
<nav class="sidebar">
<a href='../../num_traits/index.html'><img src='https://rust-num.github.io/num/rust-logo-128x128-blk-v2.png' alt='logo' width='100'></a>
<p class='location'>Trait Zero</p><div class="block items"><ul><li><a href="#required-methods">Required Methods</a></li><li><a href="#implementors">Implementors</a></li></ul></div><p class='location'><a href='../index.html'>num_traits</a>::<wbr><a href='index.html'>identities</a></p><script>window.sidebarCurrent = {name: 'Zero', ty: 'trait', relpath: ''};</script><script defer src="sidebar-items.js"></script>
</nav>
<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">
</div>
</form>
</nav>
<section id='main' class="content">
<h1 class='fqn'><span class='in-band'>Trait <a href='../index.html'>num_traits</a>::<wbr><a href='index.html'>identities</a>::<wbr><a class="trait" href=''>Zero</a></span><span class='out-of-band'><span id='render-detail'>
<a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">
[<span class='inner'>&#x2212;</span>]
</a>
</span><a class='srclink' href='../../src/num_traits/identities.rs.html#5-26' title='goto source code'>[src]</a></span></h1>
<pre class='rust trait'>pub trait Zero: <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a> + <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/arith/trait.Add.html" title="trait core::ops::arith::Add">Add</a>&lt;Self, Output = Self&gt; {
fn <a href='#tymethod.zero' class='fnname'>zero</a>() -&gt; Self;
fn <a href='#tymethod.is_zero' class='fnname'>is_zero</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a>;
}</pre><div class='docblock'><p>Defines an additive identity element for <code>Self</code>.</p>
</div>
<h2 id='required-methods'>Required Methods</h2>
<div class='methods'>
<h3 id='tymethod.zero' class='method'><span id='zero.v' class='invisible'><code>fn <a href='#tymethod.zero' class='fnname'>zero</a>() -&gt; Self</code></span></h3><div class='docblock'><p>Returns the additive identity element of <code>Self</code>, <code>0</code>.</p>
<h1 id='laws' class='section-header'><a href='#laws'>Laws</a></h1>
<pre><code class="language-{.text}">a + 0 = a ∀ a ∈ Self
0 + a = a ∀ a ∈ Self
</code></pre>
<h1 id='purity' class='section-header'><a href='#purity'>Purity</a></h1>
<p>This function should return the same result at all times regardless of
external mutable state, for example values stored in TLS or in
<code>static mut</code>s.</p>
</div><h3 id='tymethod.is_zero' class='method'><span id='is_zero.v' class='invisible'><code>fn <a href='#tymethod.is_zero' class='fnname'>is_zero</a>(&amp;self) -&gt; <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.bool.html">bool</a></code></span></h3><div class='docblock'><p>Returns <code>true</code> if <code>self</code> is equal to the additive identity.</p>
</div></div>
<h2 id='implementors'>Implementors</h2>
<ul class='item-list' id='implementors-list'>
<li><code>impl Zero for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a></code></li>
<li><code>impl Zero for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a></code></li>
<li><code>impl Zero for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u16.html">u16</a></code></li>
<li><code>impl Zero for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a></code></li>
<li><code>impl Zero for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u64.html">u64</a></code></li>
<li><code>impl Zero for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.isize.html">isize</a></code></li>
<li><code>impl Zero for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i8.html">i8</a></code></li>
<li><code>impl Zero for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i16.html">i16</a></code></li>
<li><code>impl Zero for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i32.html">i32</a></code></li>
<li><code>impl Zero for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i64.html">i64</a></code></li>
<li><code>impl Zero for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f32.html">f32</a></code></li>
<li><code>impl Zero for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f64.html">f64</a></code></li>
<li><code>impl&lt;T:&nbsp;<a class="trait" href="../../num_traits/identities/trait.Zero.html" title="trait num_traits::identities::Zero">Zero</a>&gt; Zero for <a class="struct" href="https://doc.rust-lang.org/nightly/core/num/struct.Wrapping.html" title="struct core::num::Wrapping">Wrapping</a>&lt;T&gt; <span class="where fmt-newline">where<br>&nbsp;&nbsp;&nbsp;&nbsp;<a class="struct" href="https://doc.rust-lang.org/nightly/core/num/struct.Wrapping.html" title="struct core::num::Wrapping">Wrapping</a>&lt;T&gt;: <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/arith/trait.Add.html" title="trait core::ops::arith::Add">Add</a>&lt;Output = <a class="struct" href="https://doc.rust-lang.org/nightly/core/num/struct.Wrapping.html" title="struct core::num::Wrapping">Wrapping</a>&lt;T&gt;&gt;,&nbsp;</span></code></li>
</ul><script type="text/javascript" async
src="../../implementors/num_traits/identities/trait.Zero.js">
</script></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>?</dt>
<dd>Show this help dialog</dd>
<dt>S</dt>
<dd>Focus the search field</dd>
<dt>&larrb;</dt>
<dd>Move up in search results</dd>
<dt>&rarrb;</dt>
<dd>Move down in search results</dd>
<dt>&#9166;</dt>
<dd>Go to active search result</dd>
<dt>+</dt>
<dd>Collapse/expand 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>
</div>
</div>
</aside>
<script>
window.rootPath = "../../";
window.currentCrate = "num_traits";
</script>
<script src="../../main.js"></script>
<script defer src="../../search-index.js"></script>
</body>
</html>