<!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 `PrimInt` trait in crate `num`.">
<meta name="keywords" content="rust, rustlang, rust-lang, PrimInt">
<title>num::PrimInt - 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/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></p><script>window.sidebarCurrent = {name: 'PrimInt', 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</a>::<wbr><a class="trait" href=''>PrimInt</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/int.rs.html#8-278' title='goto source code'>[src]</a></span></h1>
<pre class='rust trait'>pub trait PrimInt: <a class="trait" href="../num/trait.Saturating.html" title="trait num::Saturating">Saturating</a> + <a class="trait" href="../num/trait.CheckedAdd.html" title="trait num::CheckedAdd">CheckedAdd</a><Output = Self> + <a class="trait" href="../num/trait.CheckedSub.html" title="trait num::CheckedSub">CheckedSub</a><Output = Self> + <a class="trait" href="../num/trait.CheckedMul.html" title="trait num::CheckedMul">CheckedMul</a><Output = Self> + <a class="trait" href="../num/trait.CheckedDiv.html" title="trait num::CheckedDiv">CheckedDiv</a><Output = Self> + <a class="trait" href="../num/trait.Bounded.html" title="trait num::Bounded">Bounded</a> + <a class="trait" href="../num/cast/trait.NumCast.html" title="trait num::cast::NumCast">NumCast</a> + <a class="trait" href="../num/trait.Num.html" title="trait num::Num">Num</a> + <a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Copy.html" title="trait core::marker::Copy">Copy</a> + <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/trait.Not.html" title="trait core::ops::Not">Not</a><Output = Self> + <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/trait.BitAnd.html" title="trait core::ops::BitAnd">BitAnd</a><Self, Output = Self> + <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/trait.BitOr.html" title="trait core::ops::BitOr">BitOr</a><Self, Output = Self> + <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/trait.BitXor.html" title="trait core::ops::BitXor">BitXor</a><Self, Output = Self> + <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/trait.Shl.html" title="trait core::ops::Shl">Shl</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, Output = Self> + <a class="trait" href="https://doc.rust-lang.org/nightly/core/ops/trait.Shr.html" title="trait core::ops::Shr">Shr</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>, Output = Self> + <a class="trait" href="https://doc.rust-lang.org/nightly/core/cmp/trait.Eq.html" title="trait core::cmp::Eq">Eq</a> + <a class="trait" href="https://doc.rust-lang.org/nightly/core/cmp/trait.Ord.html" title="trait core::cmp::Ord">Ord</a> + <a class="trait" href="https://doc.rust-lang.org/nightly/core/cmp/trait.PartialOrd.html" title="trait core::cmp::PartialOrd">PartialOrd</a><Self> {
fn <a href='#tymethod.count_ones' class='fnname'>count_ones</a>(self) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>;
fn <a href='#tymethod.count_zeros' class='fnname'>count_zeros</a>(self) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>;
fn <a href='#tymethod.leading_zeros' class='fnname'>leading_zeros</a>(self) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>;
fn <a href='#tymethod.trailing_zeros' class='fnname'>trailing_zeros</a>(self) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>;
fn <a href='#tymethod.rotate_left' class='fnname'>rotate_left</a>(self, n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -> Self;
fn <a href='#tymethod.rotate_right' class='fnname'>rotate_right</a>(self, n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -> Self;
fn <a href='#tymethod.signed_shl' class='fnname'>signed_shl</a>(self, n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -> Self;
fn <a href='#tymethod.signed_shr' class='fnname'>signed_shr</a>(self, n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -> Self;
fn <a href='#tymethod.unsigned_shl' class='fnname'>unsigned_shl</a>(self, n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -> Self;
fn <a href='#tymethod.unsigned_shr' class='fnname'>unsigned_shr</a>(self, n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -> Self;
fn <a href='#tymethod.swap_bytes' class='fnname'>swap_bytes</a>(self) -> Self;
fn <a href='#tymethod.from_be' class='fnname'>from_be</a>(x: Self) -> Self;
fn <a href='#tymethod.from_le' class='fnname'>from_le</a>(x: Self) -> Self;
fn <a href='#tymethod.to_be' class='fnname'>to_be</a>(self) -> Self;
fn <a href='#tymethod.to_le' class='fnname'>to_le</a>(self) -> Self;
fn <a href='#tymethod.pow' class='fnname'>pow</a>(self, exp: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -> Self;
}</pre>
<h2 id='required-methods'>Required Methods</h2>
<div class='methods'>
<h3 id='tymethod.count_ones' class='method'><span id='count_ones.v' class='invisible'><code>fn <a href='#tymethod.count_ones' class='fnname'>count_ones</a>(self) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a></code></span></h3><div class='docblock'><p>Returns the number of ones in the binary representation of <code>self</code>.</p>
<h1 id="examples" class="section-header"><a href="#examples">Examples</a></h1>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">num_traits</span>::<span class="ident">PrimInt</span>;
<span class="kw">let</span> <span class="ident">n</span> <span class="op">=</span> <span class="number">0b01001100u8</span>;
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">n</span>.<span class="ident">count_ones</span>(), <span class="number">3</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%3APrimInt%3B%0A%0Alet%20n%20%3D%200b01001100u8%3B%0A%0Aassert_eq!(n.count_ones()%2C%203)%3B%0A%7D">Run</a></pre>
</div><h3 id='tymethod.count_zeros' class='method'><span id='count_zeros.v' class='invisible'><code>fn <a href='#tymethod.count_zeros' class='fnname'>count_zeros</a>(self) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a></code></span></h3><div class='docblock'><p>Returns the number of zeros in the binary representation of <code>self</code>.</p>
<h1 id="examples-1" class="section-header"><a href="#examples-1">Examples</a></h1>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">num_traits</span>::<span class="ident">PrimInt</span>;
<span class="kw">let</span> <span class="ident">n</span> <span class="op">=</span> <span class="number">0b01001100u8</span>;
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">n</span>.<span class="ident">count_zeros</span>(), <span class="number">5</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%3APrimInt%3B%0A%0Alet%20n%20%3D%200b01001100u8%3B%0A%0Aassert_eq!(n.count_zeros()%2C%205)%3B%0A%7D">Run</a></pre>
</div><h3 id='tymethod.leading_zeros' class='method'><span id='leading_zeros.v' class='invisible'><code>fn <a href='#tymethod.leading_zeros' class='fnname'>leading_zeros</a>(self) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a></code></span></h3><div class='docblock'><p>Returns the number of leading zeros in the binary representation
of <code>self</code>.</p>
<h1 id="examples-2" class="section-header"><a href="#examples-2">Examples</a></h1>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">num_traits</span>::<span class="ident">PrimInt</span>;
<span class="kw">let</span> <span class="ident">n</span> <span class="op">=</span> <span class="number">0b0101000u16</span>;
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">n</span>.<span class="ident">leading_zeros</span>(), <span class="number">10</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%3APrimInt%3B%0A%0Alet%20n%20%3D%200b0101000u16%3B%0A%0Aassert_eq!(n.leading_zeros()%2C%2010)%3B%0A%7D">Run</a></pre>
</div><h3 id='tymethod.trailing_zeros' class='method'><span id='trailing_zeros.v' class='invisible'><code>fn <a href='#tymethod.trailing_zeros' class='fnname'>trailing_zeros</a>(self) -> <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a></code></span></h3><div class='docblock'><p>Returns the number of trailing zeros in the binary representation
of <code>self</code>.</p>
<h1 id="examples-3" class="section-header"><a href="#examples-3">Examples</a></h1>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">num_traits</span>::<span class="ident">PrimInt</span>;
<span class="kw">let</span> <span class="ident">n</span> <span class="op">=</span> <span class="number">0b0101000u16</span>;
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">n</span>.<span class="ident">trailing_zeros</span>(), <span class="number">3</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%3APrimInt%3B%0A%0Alet%20n%20%3D%200b0101000u16%3B%0A%0Aassert_eq!(n.trailing_zeros()%2C%203)%3B%0A%7D">Run</a></pre>
</div><h3 id='tymethod.rotate_left' class='method'><span id='rotate_left.v' class='invisible'><code>fn <a href='#tymethod.rotate_left' class='fnname'>rotate_left</a>(self, n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -> Self</code></span></h3><div class='docblock'><p>Shifts the bits to the left by a specified amount amount, <code>n</code>, wrapping
the truncated bits to the end of the resulting integer.</p>
<h1 id="examples-4" class="section-header"><a href="#examples-4">Examples</a></h1>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">num_traits</span>::<span class="ident">PrimInt</span>;
<span class="kw">let</span> <span class="ident">n</span> <span class="op">=</span> <span class="number">0x0123456789ABCDEFu64</span>;
<span class="kw">let</span> <span class="ident">m</span> <span class="op">=</span> <span class="number">0x3456789ABCDEF012u64</span>;
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">n</span>.<span class="ident">rotate_left</span>(<span class="number">12</span>), <span class="ident">m</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%3APrimInt%3B%0A%0Alet%20n%20%3D%200x0123456789ABCDEFu64%3B%0Alet%20m%20%3D%200x3456789ABCDEF012u64%3B%0A%0Aassert_eq!(n.rotate_left(12)%2C%20m)%3B%0A%7D">Run</a></pre>
</div><h3 id='tymethod.rotate_right' class='method'><span id='rotate_right.v' class='invisible'><code>fn <a href='#tymethod.rotate_right' class='fnname'>rotate_right</a>(self, n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -> Self</code></span></h3><div class='docblock'><p>Shifts the bits to the right by a specified amount amount, <code>n</code>, wrapping
the truncated bits to the beginning of the resulting integer.</p>
<h1 id="examples-5" class="section-header"><a href="#examples-5">Examples</a></h1>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">num_traits</span>::<span class="ident">PrimInt</span>;
<span class="kw">let</span> <span class="ident">n</span> <span class="op">=</span> <span class="number">0x0123456789ABCDEFu64</span>;
<span class="kw">let</span> <span class="ident">m</span> <span class="op">=</span> <span class="number">0xDEF0123456789ABCu64</span>;
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">n</span>.<span class="ident">rotate_right</span>(<span class="number">12</span>), <span class="ident">m</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%3APrimInt%3B%0A%0Alet%20n%20%3D%200x0123456789ABCDEFu64%3B%0Alet%20m%20%3D%200xDEF0123456789ABCu64%3B%0A%0Aassert_eq!(n.rotate_right(12)%2C%20m)%3B%0A%7D">Run</a></pre>
</div><h3 id='tymethod.signed_shl' class='method'><span id='signed_shl.v' class='invisible'><code>fn <a href='#tymethod.signed_shl' class='fnname'>signed_shl</a>(self, n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -> Self</code></span></h3><div class='docblock'><p>Shifts the bits to the left by a specified amount amount, <code>n</code>, filling
zeros in the least significant bits.</p>
<p>This is bitwise equivalent to signed <code>Shl</code>.</p>
<h1 id="examples-6" class="section-header"><a href="#examples-6">Examples</a></h1>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">num_traits</span>::<span class="ident">PrimInt</span>;
<span class="kw">let</span> <span class="ident">n</span> <span class="op">=</span> <span class="number">0x0123456789ABCDEFu64</span>;
<span class="kw">let</span> <span class="ident">m</span> <span class="op">=</span> <span class="number">0x3456789ABCDEF000u64</span>;
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">n</span>.<span class="ident">signed_shl</span>(<span class="number">12</span>), <span class="ident">m</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%3APrimInt%3B%0A%0Alet%20n%20%3D%200x0123456789ABCDEFu64%3B%0Alet%20m%20%3D%200x3456789ABCDEF000u64%3B%0A%0Aassert_eq!(n.signed_shl(12)%2C%20m)%3B%0A%7D">Run</a></pre>
</div><h3 id='tymethod.signed_shr' class='method'><span id='signed_shr.v' class='invisible'><code>fn <a href='#tymethod.signed_shr' class='fnname'>signed_shr</a>(self, n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -> Self</code></span></h3><div class='docblock'><p>Shifts the bits to the right by a specified amount amount, <code>n</code>, copying
the "sign bit" in the most significant bits even for unsigned types.</p>
<p>This is bitwise equivalent to signed <code>Shr</code>.</p>
<h1 id="examples-7" class="section-header"><a href="#examples-7">Examples</a></h1>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">num_traits</span>::<span class="ident">PrimInt</span>;
<span class="kw">let</span> <span class="ident">n</span> <span class="op">=</span> <span class="number">0xFEDCBA9876543210u64</span>;
<span class="kw">let</span> <span class="ident">m</span> <span class="op">=</span> <span class="number">0xFFFFEDCBA9876543u64</span>;
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">n</span>.<span class="ident">signed_shr</span>(<span class="number">12</span>), <span class="ident">m</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%3APrimInt%3B%0A%0Alet%20n%20%3D%200xFEDCBA9876543210u64%3B%0Alet%20m%20%3D%200xFFFFEDCBA9876543u64%3B%0A%0Aassert_eq!(n.signed_shr(12)%2C%20m)%3B%0A%7D">Run</a></pre>
</div><h3 id='tymethod.unsigned_shl' class='method'><span id='unsigned_shl.v' class='invisible'><code>fn <a href='#tymethod.unsigned_shl' class='fnname'>unsigned_shl</a>(self, n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -> Self</code></span></h3><div class='docblock'><p>Shifts the bits to the left by a specified amount amount, <code>n</code>, filling
zeros in the least significant bits.</p>
<p>This is bitwise equivalent to unsigned <code>Shl</code>.</p>
<h1 id="examples-8" class="section-header"><a href="#examples-8">Examples</a></h1>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">num_traits</span>::<span class="ident">PrimInt</span>;
<span class="kw">let</span> <span class="ident">n</span> <span class="op">=</span> <span class="number">0x0123456789ABCDEFi64</span>;
<span class="kw">let</span> <span class="ident">m</span> <span class="op">=</span> <span class="number">0x3456789ABCDEF000i64</span>;
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">n</span>.<span class="ident">unsigned_shl</span>(<span class="number">12</span>), <span class="ident">m</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%3APrimInt%3B%0A%0Alet%20n%20%3D%200x0123456789ABCDEFi64%3B%0Alet%20m%20%3D%200x3456789ABCDEF000i64%3B%0A%0Aassert_eq!(n.unsigned_shl(12)%2C%20m)%3B%0A%7D">Run</a></pre>
</div><h3 id='tymethod.unsigned_shr' class='method'><span id='unsigned_shr.v' class='invisible'><code>fn <a href='#tymethod.unsigned_shr' class='fnname'>unsigned_shr</a>(self, n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -> Self</code></span></h3><div class='docblock'><p>Shifts the bits to the right by a specified amount amount, <code>n</code>, filling
zeros in the most significant bits.</p>
<p>This is bitwise equivalent to unsigned <code>Shr</code>.</p>
<h1 id="examples-9" class="section-header"><a href="#examples-9">Examples</a></h1>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">num_traits</span>::<span class="ident">PrimInt</span>;
<span class="kw">let</span> <span class="ident">n</span> <span class="op">=</span> <span class="number">0xFEDCBA9876543210i64</span>;
<span class="kw">let</span> <span class="ident">m</span> <span class="op">=</span> <span class="number">0x000FEDCBA9876543i64</span>;
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">n</span>.<span class="ident">unsigned_shr</span>(<span class="number">12</span>), <span class="ident">m</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%3APrimInt%3B%0A%0Alet%20n%20%3D%200xFEDCBA9876543210i64%3B%0Alet%20m%20%3D%200x000FEDCBA9876543i64%3B%0A%0Aassert_eq!(n.unsigned_shr(12)%2C%20m)%3B%0A%7D">Run</a></pre>
</div><h3 id='tymethod.swap_bytes' class='method'><span id='swap_bytes.v' class='invisible'><code>fn <a href='#tymethod.swap_bytes' class='fnname'>swap_bytes</a>(self) -> Self</code></span></h3><div class='docblock'><p>Reverses the byte order of the integer.</p>
<h1 id="examples-10" class="section-header"><a href="#examples-10">Examples</a></h1>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">num_traits</span>::<span class="ident">PrimInt</span>;
<span class="kw">let</span> <span class="ident">n</span> <span class="op">=</span> <span class="number">0x0123456789ABCDEFu64</span>;
<span class="kw">let</span> <span class="ident">m</span> <span class="op">=</span> <span class="number">0xEFCDAB8967452301u64</span>;
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">n</span>.<span class="ident">swap_bytes</span>(), <span class="ident">m</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%3APrimInt%3B%0A%0Alet%20n%20%3D%200x0123456789ABCDEFu64%3B%0Alet%20m%20%3D%200xEFCDAB8967452301u64%3B%0A%0Aassert_eq!(n.swap_bytes()%2C%20m)%3B%0A%7D">Run</a></pre>
</div><h3 id='tymethod.from_be' class='method'><span id='from_be.v' class='invisible'><code>fn <a href='#tymethod.from_be' class='fnname'>from_be</a>(x: Self) -> Self</code></span></h3><div class='docblock'><p>Convert an integer from big endian to the target's endianness.</p>
<p>On big endian this is a no-op. On little endian the bytes are swapped.</p>
<h1 id="examples-11" class="section-header"><a href="#examples-11">Examples</a></h1>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">num_traits</span>::<span class="ident">PrimInt</span>;
<span class="kw">let</span> <span class="ident">n</span> <span class="op">=</span> <span class="number">0x0123456789ABCDEFu64</span>;
<span class="kw">if</span> <span class="macro">cfg</span><span class="macro">!</span>(<span class="ident">target_endian</span> <span class="op">=</span> <span class="string">"big"</span>) {
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">u64</span>::<span class="ident">from_be</span>(<span class="ident">n</span>), <span class="ident">n</span>)
} <span class="kw">else</span> {
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">u64</span>::<span class="ident">from_be</span>(<span class="ident">n</span>), <span class="ident">n</span>.<span class="ident">swap_bytes</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%3APrimInt%3B%0A%0Alet%20n%20%3D%200x0123456789ABCDEFu64%3B%0A%0Aif%20cfg!(target_endian%20%3D%20%22big%22)%20%7B%0A%20%20%20%20assert_eq!(u64%3A%3Afrom_be(n)%2C%20n)%0A%7D%20else%20%7B%0A%20%20%20%20assert_eq!(u64%3A%3Afrom_be(n)%2C%20n.swap_bytes())%0A%7D%0A%7D">Run</a></pre>
</div><h3 id='tymethod.from_le' class='method'><span id='from_le.v' class='invisible'><code>fn <a href='#tymethod.from_le' class='fnname'>from_le</a>(x: Self) -> Self</code></span></h3><div class='docblock'><p>Convert an integer from little endian to the target's endianness.</p>
<p>On little endian this is a no-op. On big endian the bytes are swapped.</p>
<h1 id="examples-12" class="section-header"><a href="#examples-12">Examples</a></h1>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">num_traits</span>::<span class="ident">PrimInt</span>;
<span class="kw">let</span> <span class="ident">n</span> <span class="op">=</span> <span class="number">0x0123456789ABCDEFu64</span>;
<span class="kw">if</span> <span class="macro">cfg</span><span class="macro">!</span>(<span class="ident">target_endian</span> <span class="op">=</span> <span class="string">"little"</span>) {
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">u64</span>::<span class="ident">from_le</span>(<span class="ident">n</span>), <span class="ident">n</span>)
} <span class="kw">else</span> {
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">u64</span>::<span class="ident">from_le</span>(<span class="ident">n</span>), <span class="ident">n</span>.<span class="ident">swap_bytes</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%3APrimInt%3B%0A%0Alet%20n%20%3D%200x0123456789ABCDEFu64%3B%0A%0Aif%20cfg!(target_endian%20%3D%20%22little%22)%20%7B%0A%20%20%20%20assert_eq!(u64%3A%3Afrom_le(n)%2C%20n)%0A%7D%20else%20%7B%0A%20%20%20%20assert_eq!(u64%3A%3Afrom_le(n)%2C%20n.swap_bytes())%0A%7D%0A%7D">Run</a></pre>
</div><h3 id='tymethod.to_be' class='method'><span id='to_be.v' class='invisible'><code>fn <a href='#tymethod.to_be' class='fnname'>to_be</a>(self) -> Self</code></span></h3><div class='docblock'><p>Convert <code>self</code> to big endian from the target's endianness.</p>
<p>On big endian this is a no-op. On little endian the bytes are swapped.</p>
<h1 id="examples-13" class="section-header"><a href="#examples-13">Examples</a></h1>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">num_traits</span>::<span class="ident">PrimInt</span>;
<span class="kw">let</span> <span class="ident">n</span> <span class="op">=</span> <span class="number">0x0123456789ABCDEFu64</span>;
<span class="kw">if</span> <span class="macro">cfg</span><span class="macro">!</span>(<span class="ident">target_endian</span> <span class="op">=</span> <span class="string">"big"</span>) {
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">n</span>.<span class="ident">to_be</span>(), <span class="ident">n</span>)
} <span class="kw">else</span> {
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">n</span>.<span class="ident">to_be</span>(), <span class="ident">n</span>.<span class="ident">swap_bytes</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%3APrimInt%3B%0A%0Alet%20n%20%3D%200x0123456789ABCDEFu64%3B%0A%0Aif%20cfg!(target_endian%20%3D%20%22big%22)%20%7B%0A%20%20%20%20assert_eq!(n.to_be()%2C%20n)%0A%7D%20else%20%7B%0A%20%20%20%20assert_eq!(n.to_be()%2C%20n.swap_bytes())%0A%7D%0A%7D">Run</a></pre>
</div><h3 id='tymethod.to_le' class='method'><span id='to_le.v' class='invisible'><code>fn <a href='#tymethod.to_le' class='fnname'>to_le</a>(self) -> Self</code></span></h3><div class='docblock'><p>Convert <code>self</code> to little endian from the target's endianness.</p>
<p>On little endian this is a no-op. On big endian the bytes are swapped.</p>
<h1 id="examples-14" class="section-header"><a href="#examples-14">Examples</a></h1>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">num_traits</span>::<span class="ident">PrimInt</span>;
<span class="kw">let</span> <span class="ident">n</span> <span class="op">=</span> <span class="number">0x0123456789ABCDEFu64</span>;
<span class="kw">if</span> <span class="macro">cfg</span><span class="macro">!</span>(<span class="ident">target_endian</span> <span class="op">=</span> <span class="string">"little"</span>) {
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">n</span>.<span class="ident">to_le</span>(), <span class="ident">n</span>)
} <span class="kw">else</span> {
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">n</span>.<span class="ident">to_le</span>(), <span class="ident">n</span>.<span class="ident">swap_bytes</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%3APrimInt%3B%0A%0Alet%20n%20%3D%200x0123456789ABCDEFu64%3B%0A%0Aif%20cfg!(target_endian%20%3D%20%22little%22)%20%7B%0A%20%20%20%20assert_eq!(n.to_le()%2C%20n)%0A%7D%20else%20%7B%0A%20%20%20%20assert_eq!(n.to_le()%2C%20n.swap_bytes())%0A%7D%0A%7D">Run</a></pre>
</div><h3 id='tymethod.pow' class='method'><span id='pow.v' class='invisible'><code>fn <a href='#tymethod.pow' class='fnname'>pow</a>(self, exp: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -> Self</code></span></h3><div class='docblock'><p>Raises self to the power of <code>exp</code>, using exponentiation by squaring.</p>
<h1 id="examples-15" class="section-header"><a href="#examples-15">Examples</a></h1>
<pre class="rust rust-example-rendered">
<span class="kw">use</span> <span class="ident">num_traits</span>::<span class="ident">PrimInt</span>;
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="number">2i32</span>.<span class="ident">pow</span>(<span class="number">4</span>), <span class="number">16</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%3APrimInt%3B%0A%0Aassert_eq!(2i32.pow(4)%2C%2016)%3B%0A%7D">Run</a></pre>
</div></div>
<h2 id='implementors'>Implementors</h2>
<ul class='item-list' id='implementors-list'>
<li><code>impl PrimInt for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a></code></li>
<li><code>impl PrimInt for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u16.html">u16</a></code></li>
<li><code>impl PrimInt for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a></code></li>
<li><code>impl PrimInt for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u64.html">u64</a></code></li>
<li><code>impl PrimInt for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a></code></li>
<li><code>impl PrimInt for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i8.html">i8</a></code></li>
<li><code>impl PrimInt for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i16.html">i16</a></code></li>
<li><code>impl PrimInt for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i32.html">i32</a></code></li>
<li><code>impl PrimInt for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i64.html">i64</a></code></li>
<li><code>impl PrimInt for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.isize.html">isize</a></code></li>
</ul><script type="text/javascript" async
src="../implementors/num_traits/int/trait.PrimInt.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>⇤</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="../jquery.js"></script>
<script src="../main.js"></script>
<script defer src="../search-index.js"></script>
</body>
</html>