123 lines
6.2 KiB
HTML
123 lines
6.2 KiB
HTML
<!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 `checked_pow` fn in crate `num`.">
|
||
<meta name="keywords" content="rust, rustlang, rust-lang, checked_pow">
|
||
|
||
<title>num::pow::checked_pow - 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 fn">
|
||
<!--[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/index.html'><img src='https://rust-num.github.io/num/rust-logo-128x128-blk-v2.png' alt='logo' width='100'></a>
|
||
<p class='location'><a href='../index.html'>num</a>::<wbr><a href='index.html'>pow</a></p><script>window.sidebarCurrent = {name: 'checked_pow', ty: 'fn', 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'>Function <a href='../index.html'>num</a>::<wbr><a href='index.html'>pow</a>::<wbr><a class="fn" href=''>checked_pow</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'>−</span>]
|
||
</a>
|
||
</span><a class='srclink' href='../../src/num_traits/pow.rs.html#49-73' title='goto source code'>[src]</a></span></h1>
|
||
<pre class='rust fn'>pub fn checked_pow<T>(base: T, exp: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><T> <span class="where fmt-newline">where<br> T: <a class="trait" href="../../num/trait.One.html" title="trait num::One">One</a> + <a class="trait" href="../../num/trait.CheckedMul.html" title="trait num::CheckedMul">CheckedMul</a> + <a class="trait" href="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html" title="trait core::clone::Clone">Clone</a>, </span></pre><div class='docblock'><p>Raises a value to the power of exp, returning <code>None</code> if an overflow occurred.</p>
|
||
|
||
<p>Otherwise same as the <code>pow</code> function.</p>
|
||
|
||
<h1 id='example' class='section-header'><a href='#example'>Example</a></h1>
|
||
<pre class="rust rust-example-rendered">
|
||
<span class="kw">use</span> <span class="ident">num_traits</span>::<span class="ident">checked_pow</span>;
|
||
|
||
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">checked_pow</span>(<span class="number">2i8</span>, <span class="number">4</span>), <span class="prelude-val">Some</span>(<span class="number">16</span>));
|
||
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">checked_pow</span>(<span class="number">7i8</span>, <span class="number">8</span>), <span class="prelude-val">None</span>);
|
||
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">checked_pow</span>(<span class="number">7u32</span>, <span class="number">8</span>), <span class="prelude-val">Some</span>(<span class="number">5_764_801</span>));<a class="test-arrow" target="_blank" href="http://play.integer32.com/?code=extern%20crate%20num%3B%0Afn%20main()%20%7B%0Ause%20num_traits%3A%3Achecked_pow%3B%0A%0Aassert_eq!(checked_pow(2i8%2C%204)%2C%20Some(16))%3B%0Aassert_eq!(checked_pow(7i8%2C%208)%2C%20None)%3B%0Aassert_eq!(checked_pow(7u32%2C%208)%2C%20Some(5_764_801))%3B%0A%7D">Run</a></pre>
|
||
</div></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>⇤</dt>
|
||
<dd>Move up in search results</dd>
|
||
<dt>⇥</dt>
|
||
<dd>Move down in search results</dd>
|
||
<dt>⏎</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";
|
||
</script>
|
||
<script src="../../main.js"></script>
|
||
<script defer src="../../search-index.js"></script>
|
||
</body>
|
||
</html> |