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<!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 `FromPrimitive` trait in crate `num`."><meta name="keywords" content="rust, rustlang, rust-lang, FromPrimitive"><title>num::traits::cast::FromPrimitive - Rust</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><noscript><link rel="stylesheet" href="../../../noscript.css"></noscript><link rel="shortcut icon" href="../../../favicon.ico"><style type="text/css">#crate-search{background-image:url("../../../down-arrow.svg");}</style></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"><div class="sidebar-menu">&#9776;</div><a href='../../../num/index.html'><div class='logo-container'><img src='../../../rust-logo.png' alt='logo'></div></a><p class='location'>Trait FromPrimitive</p><div class="sidebar-elems"><div class="block items"><a class="sidebar-title" href="#required-methods">Required Methods</a><div class="sidebar-links"><a href="#tymethod.from_i64">from_i64</a><a href="#tymethod.from_u64">from_u64</a></div><a class="sidebar-title" href="#provided-methods">Provided Methods</a><div class="sidebar-links"><a href="#method.from_f32">from_f32</a><a href="#method.from_f64">from_f64</a><a href="#method.from_i128">from_i128</a><a href="#method.from_i16">from_i16</a><a href="#method.from_i32">from_i32</a><a href="#method.from_i8">from_i8</a><a href="#method.from_isize">from_isize</a><a href="#method.from_u128">from_u128</a><a href="#method.from_u16">from_u16</a><a href="#method.from_u32">from_u32</a><a href="#method.from_u8">from_u8</a><a href="#method.from_usize">from_usize</a></div><a class="sidebar-title" href="#foreign-impls">Implementations on Foreign Types</a><div class="sidebar-links"><a href="#impl-FromPrimitive-for-Wrapping%3CT%3E">Wrapping&lt;T&gt;</a><a href="#impl-FromPrimitive-for-f32">f32</a><a href="#impl-FromPrimitive-for-f64">f64</a><a href="#impl-FromPrimitive-for-i128">i128</a><a href="#impl-FromPrimitive-for-i16">i16</a><a href="#impl-FromPrimitive-for-i32">i32</a><a href="#impl-FromPrimitive-for-i64">i64</a><a href="#impl-FromPrimitive-for-i8">i8</a><a href="#impl-FromPrimitive-for-isize">isize</a><a href="#impl-FromPrimitive-for-u128">u128</a><a href="#impl-FromPrimitive-for-u16">u16</a><a href="#impl-FromPrimitive-for-u32">u32</a><a href="#impl-FromPrimitive-for-u64">u64</a><a href="#impl-FromPrimitive-for-u8">u8</a><a href="#impl-FromPrimitive-for-usize">usize</a></div><a class="sidebar-title" href="#implementors">Implementors</a></div><p class='location'><a href='../../index.html'>num</a>::<wbr><a href='../index.html'>traits</a>::<wbr><a href='index.html'>cast</a></p><script>window.sidebarCurrent = {name: 'FromPrimitive', ty: 'trait', relpath: ''};</script><script defer src="sidebar-items.js"></script></div></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"><div><select id="crate-search"><option value="All crates">All crates</option></select><input class="search-input" name="search" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"></div><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"><h1 class='fqn'><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/cast.rs.html#364-471' title='goto source code'>[src]</a></span><span class='in-band'>Trait <a href='../../index.html'>num</a>::<wbr><a href='../index.html'>traits</a>::<wbr><a href='index.html'>cast</a>::<wbr><a class="trait" href=''>FromPrimitive</a></span></h1><div class="docblock type-decl hidden-by-usual-hider"><pre class='rust trait'>pub trait FromPrimitive {
fn <a href='#tymethod.from_i64' class='fnname'>from_i64</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i64.html">i64</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;Self&gt;;
<div class='item-spacer'></div> fn <a href='#tymethod.from_u64' class='fnname'>from_u64</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u64.html">u64</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;Self&gt;;
fn <a href='#method.from_isize' class='fnname'>from_isize</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.isize.html">isize</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;Self&gt; { ... }
<div class='item-spacer'></div> fn <a href='#method.from_i8' class='fnname'>from_i8</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i8.html">i8</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;Self&gt; { ... }
<div class='item-spacer'></div> fn <a href='#method.from_i16' class='fnname'>from_i16</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i16.html">i16</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;Self&gt; { ... }
<div class='item-spacer'></div> fn <a href='#method.from_i32' class='fnname'>from_i32</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i32.html">i32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;Self&gt; { ... }
<div class='item-spacer'></div> fn <a href='#method.from_i128' class='fnname'>from_i128</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i128.html">i128</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;Self&gt; { ... }
<div class='item-spacer'></div> fn <a href='#method.from_usize' class='fnname'>from_usize</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;Self&gt; { ... }
<div class='item-spacer'></div> fn <a href='#method.from_u8' class='fnname'>from_u8</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;Self&gt; { ... }
<div class='item-spacer'></div> fn <a href='#method.from_u16' class='fnname'>from_u16</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u16.html">u16</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;Self&gt; { ... }
<div class='item-spacer'></div> fn <a href='#method.from_u32' class='fnname'>from_u32</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;Self&gt; { ... }
<div class='item-spacer'></div> fn <a href='#method.from_u128' class='fnname'>from_u128</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u128.html">u128</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;Self&gt; { ... }
<div class='item-spacer'></div> fn <a href='#method.from_f32' class='fnname'>from_f32</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f32.html">f32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;Self&gt; { ... }
<div class='item-spacer'></div> fn <a href='#method.from_f64' class='fnname'>from_f64</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f64.html">f64</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;Self&gt; { ... }
}</pre></div><div class='docblock'><p>A generic trait for converting a number to a value.</p>
</div>
<h2 id='required-methods' class='small-section-header'>Required methods<a href='#required-methods' class='anchor'></a></h2><div class='methods'><h3 id='tymethod.from_i64' class='method'><code id='from_i64.v'>fn <a href='#tymethod.from_i64' class='fnname'>from_i64</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i64.html">i64</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;Self&gt;</code></h3><div class='docblock'><p>Convert an <code>i64</code> to return an optional value of this type. If the
type cannot be represented by this value, then <code>None</code> is returned.</p>
</div><h3 id='tymethod.from_u64' class='method'><code id='from_u64.v'>fn <a href='#tymethod.from_u64' class='fnname'>from_u64</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u64.html">u64</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;Self&gt;</code></h3><div class='docblock'><p>Convert an <code>u64</code> to return an optional value of this type. If the
type cannot be represented by this value, then <code>None</code> is returned.</p>
</div></div><span class='loading-content'>Loading content...</span>
<h2 id='provided-methods' class='small-section-header'>Provided methods<a href='#provided-methods' class='anchor'></a></h2><div class='methods'><h3 id='method.from_isize' class='method'><code id='from_isize.v'>fn <a href='#method.from_isize' class='fnname'>from_isize</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.isize.html">isize</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;Self&gt;</code></h3><div class='docblock'><p>Convert an <code>isize</code> to return an optional value of this type. If the
value cannot be represented by this value, then <code>None</code> is returned.</p>
</div><h3 id='method.from_i8' class='method'><code id='from_i8.v'>fn <a href='#method.from_i8' class='fnname'>from_i8</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i8.html">i8</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;Self&gt;</code></h3><div class='docblock'><p>Convert an <code>i8</code> to return an optional value of this type. If the
type cannot be represented by this value, then <code>None</code> is returned.</p>
</div><h3 id='method.from_i16' class='method'><code id='from_i16.v'>fn <a href='#method.from_i16' class='fnname'>from_i16</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i16.html">i16</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;Self&gt;</code></h3><div class='docblock'><p>Convert an <code>i16</code> to return an optional value of this type. If the
type cannot be represented by this value, then <code>None</code> is returned.</p>
</div><h3 id='method.from_i32' class='method'><code id='from_i32.v'>fn <a href='#method.from_i32' class='fnname'>from_i32</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i32.html">i32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;Self&gt;</code></h3><div class='docblock'><p>Convert an <code>i32</code> to return an optional value of this type. If the
type cannot be represented by this value, then <code>None</code> is returned.</p>
</div><h3 id='method.from_i128' class='method'><code id='from_i128.v'>fn <a href='#method.from_i128' class='fnname'>from_i128</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i128.html">i128</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;Self&gt;</code></h3><div class='docblock'><p>Convert an <code>i128</code> to return an optional value of this type. If the
type cannot be represented by this value, then <code>None</code> is returned.</p>
<p>This method is only available with feature <code>i128</code> enabled on Rust &gt;= 1.26.</p>
<p>The default implementation converts through <code>from_i64()</code>. Types implementing
this trait should override this method if they can represent a greater range.</p>
</div><h3 id='method.from_usize' class='method'><code id='from_usize.v'>fn <a href='#method.from_usize' class='fnname'>from_usize</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;Self&gt;</code></h3><div class='docblock'><p>Convert a <code>usize</code> to return an optional value of this type. If the
type cannot be represented by this value, then <code>None</code> is returned.</p>
</div><h3 id='method.from_u8' class='method'><code id='from_u8.v'>fn <a href='#method.from_u8' class='fnname'>from_u8</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;Self&gt;</code></h3><div class='docblock'><p>Convert an <code>u8</code> to return an optional value of this type. If the
type cannot be represented by this value, then <code>None</code> is returned.</p>
</div><h3 id='method.from_u16' class='method'><code id='from_u16.v'>fn <a href='#method.from_u16' class='fnname'>from_u16</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u16.html">u16</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;Self&gt;</code></h3><div class='docblock'><p>Convert an <code>u16</code> to return an optional value of this type. If the
type cannot be represented by this value, then <code>None</code> is returned.</p>
</div><h3 id='method.from_u32' class='method'><code id='from_u32.v'>fn <a href='#method.from_u32' class='fnname'>from_u32</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;Self&gt;</code></h3><div class='docblock'><p>Convert an <code>u32</code> to return an optional value of this type. If the
type cannot be represented by this value, then <code>None</code> is returned.</p>
</div><h3 id='method.from_u128' class='method'><code id='from_u128.v'>fn <a href='#method.from_u128' class='fnname'>from_u128</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u128.html">u128</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;Self&gt;</code></h3><div class='docblock'><p>Convert an <code>u128</code> to return an optional value of this type. If the
type cannot be represented by this value, then <code>None</code> is returned.</p>
<p>This method is only available with feature <code>i128</code> enabled on Rust &gt;= 1.26.</p>
<p>The default implementation converts through <code>from_u64()</code>. Types implementing
this trait should override this method if they can represent a greater range.</p>
</div><h3 id='method.from_f32' class='method'><code id='from_f32.v'>fn <a href='#method.from_f32' class='fnname'>from_f32</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f32.html">f32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;Self&gt;</code></h3><div class='docblock'><p>Convert a <code>f32</code> to return an optional value of this type. If the
type cannot be represented by this value, then <code>None</code> is returned.</p>
</div><h3 id='method.from_f64' class='method'><code id='from_f64.v'>fn <a href='#method.from_f64' class='fnname'>from_f64</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f64.html">f64</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;Self&gt;</code></h3><div class='docblock'><p>Convert a <code>f64</code> to return an optional value of this type. If the
type cannot be represented by this value, then <code>None</code> is returned.</p>
</div></div><span class='loading-content'>Loading content...</span>
<h2 id='foreign-impls' class='small-section-header'>Implementations on Foreign Types<a href='#foreign-impls' class='anchor'></a></h2><h3 id='impl-FromPrimitive-for-u32' class='impl'><code class='in-band'>impl <a class="trait" href="../../../num/traits/cast/trait.FromPrimitive.html" title="trait num::traits::cast::FromPrimitive">FromPrimitive</a> for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a></code><a href='#impl-FromPrimitive-for-u32' class='anchor'></a><a class='srclink' href='../../../src/num_traits/cast.rs.html#476-537' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.from_isize-1' class="method hidden"><code id='from_isize.v-1'>fn <a href='#method.from_isize' class='fnname'>from_isize</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.isize.html">isize</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#478-480' title='goto source code'>[src]</a></h4><h4 id='method.from_i8-1' class="method hidden"><code id='from_i8.v-1'>fn <a href='#method.from_i8' class='fnname'>from_i8</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i8.html">i8</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#482-484' title='goto source code'>[src]</a></h4><h4 id='method.from_i16-1' class="method hidden"><code id='from_i16.v-1'>fn <a href='#method.from_i16' class='fnname'>from_i16</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i16.html">i16</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#486-488' title='goto source code'>[src]</a></h4><h4 id='method.from_i32-1' class="method hidden"><code id='from_i32.v-1'>fn <a href='#method.from_i32' class='fnname'>from_i32</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i32.html">i32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#490-492' title='goto source code'>[src]</a></h4><h4 id='method.from_i64' class="method hidden"><code id='from_i64.v-1'>fn <a href='#method.from_i64' class='fnname'>from_i64</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i64.html">i64</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#494-496' title='goto source code'>[src]</a></h4><h4 id='method.from_i128-1' class="method hidden"><code id='from_i128.v-1'>fn <a href='#method.from_i128' class='fnname'>from_i128</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i128.html">i128</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#499-501' title='goto source code'>[src]</a></h4><h4 id='method.from_usize-1' class="method hidden"><code id='from_usize.v-1'>fn <a href='#method.from_usize' class='fnname'>from_usize</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#504-506' title='goto source code'>[src]</a></h4><h4 id='method.from_u8-1' class="method hidden"><code id='from_u8.v-1'>fn <a href='#method.from_u8' class='fnname'>from_u8</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#508-510' title='goto source code'>[src]</a></h4><h4 id='method.from_u16-1' class="method hidden"><code id='from_u16.v-1'>fn <a href='#method.from_u16' class='fnname'>from_u16</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u16.html">u16</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#512-514' title='goto source code'>[src]</a></h4><h4 id='method.from_u32-1' class="method hidden"><code id='from_u32.v-1'>fn <a href='#method.from_u32' class='fnname'>from_u32</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#516-518' title='goto source code'>[src]</a></h4><h4 id='method.from_u64' class="method hidden"><code id='from_u64.v-1'>fn <a href='#method.from_u64' class='fnname'>from_u64</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u64.html">u64</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#520-522' title='goto source code'>[src]</a></h4><h4 id='method.from_u128-1' class="method hidden"><code id='from_u128.v-1'>fn <a href='#method.from_u128' class='fnname'>from_u128</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u128.html">u128</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#525-527' title='goto source code'>[src]</a></h4><h4 id='method.from_f32-1' class="method hidden"><code id='from_f32.v-1'>fn <a href='#method.from_f32' class='fnname'>from_f32</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f32.html">f32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#530-532' title='goto source code'>[src]</a></h4><h4 id='method.from_f64-1' class="method hidden"><code id='from_f64.v-1'>fn <a href='#method.from_f64' class='fnname'>from_f64</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f64.html">f64</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#534-536' title='goto source code'>[src]</a></h4></div><h3 id='impl-FromPrimitive-for-i64' class='impl'><code class='in-band'>impl <a class="trait" href="../../../num/traits/cast/trait.FromPrimitive.html" title="trait num::traits::cast::FromPrimitive">FromPrimitive</a> for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i64.html">i64</a></code><a href='#impl-FromPrimitive-for-i64' class='anchor'></a><a class='srclink' href='../../../src/num_traits/cast.rs.html#476-537' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.from_isize-2' class="method hidden"><code id='from_isize.v-2'>fn <a href='#method.from_isize' class='fnname'>from_isize</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.isize.html">isize</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i64.html">i64</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#478-480' title='goto source code'>[src]</a></h4><h4 id='method.from_i8-2' class="method hidden"><code id='from_i8.v-2'>fn <a href='#method.from_i8' class='fnname'>from_i8</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i8.html">i8</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i64.html">i64</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#482-484' title='goto source code'>[src]</a></h4><h4 id='method.from_i16-2' class="method hidden"><code id='from_i16.v-2'>fn <a href='#method.from_i16' class='fnname'>from_i16</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i16.html">i16</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i64.html">i64</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#486-488' title='goto source code'>[src]</a></h4><h4 id='method.from_i32-2' class="method hidden"><code id='from_i32.v-2'>fn <a href='#method.from_i32' class='fnname'>from_i32</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i32.html">i32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i64.html">i64</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#490-492' title='goto source code'>[src]</a></h4><h4 id='method.from_i64-1' class="method hidden"><code id='from_i64.v-2'>fn <a href='#method.from_i64' class='fnname'>from_i64</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i64.html">i64</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i64.html">i64</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#494-496' title='goto source code'>[src]</a></h4><h4 id='method.from_i128-2' class="method hidden"><code id='from_i128.v-2'>fn <a href='#method.from_i128' class='fnname'>from_i128</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i128.html">i128</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i64.html">i64</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#499-501' title='goto source code'>[src]</a></h4><h4 id='method.from_usize-2' class="method hidden"><code id='from_usize.v-2'>fn <a href='#method.from_usize' class='fnname'>from_usize</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i64.html">i64</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#504-506' title='goto source code'>[src]</a></h4><h4 id='method.from_u8-2' class="method hidden"><code id='from_u8.v-2'>fn <a href='#method.from_u8' class='fnname'>from_u8</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i64.html">i64</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#508-510' title='goto source code'>[src]</a></h4><h4 id='method.from_u16-2' class="method hidden"><code id='from_u16.v-2'>fn <a href='#method.from_u16' class='fnname'>from_u16</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u16.html">u16</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i64.html">i64</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#512-514' title='goto source code'>[src]</a></h4><h4 id='method.from_u32-2' class="method hidden"><code id='from_u32.v-2'>fn <a href='#method.from_u32' class='fnname'>from_u32</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i64.html">i64</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#516-518' title='goto source code'>[src]</a></h4><h4 id='method.from_u64-1' class="method hidden"><code id='from_u64.v-2'>fn <a href='#method.from_u64' class='fnname'>from_u64</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u64.html">u64</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i64.html">i64</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#520-522' title='goto source code'>[src]</a></h4><h4 id='method.from_u128-2' class="method hidden"><code id='from_u128.v-2'>fn <a href='#method.from_u128' class='fnname'>from_u128</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u128.html">u128</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i64.html">i64</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#525-527' title='goto source code'>[src]</a></h4><h4 id='method.from_f32-2' class="method hidden"><code id='from_f32.v-2'>fn <a href='#method.from_f32' class='fnname'>from_f32</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f32.html">f32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i64.html">i64</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#530-532' title='goto source code'>[src]</a></h4><h4 id='method.from_f64-2' class="method hidden"><code id='from_f64.v-2'>fn <a href='#method.from_f64' class='fnname'>from_f64</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f64.html">f64</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i64.html">i64</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#534-536' title='goto source code'>[src]</a></h4></div><h3 id='impl-FromPrimitive-for-f32' class='impl'><code class='in-band'>impl <a class="trait" href="../../../num/traits/cast/trait.FromPrimitive.html" title="trait num::traits::cast::FromPrimitive">FromPrimitive</a> for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f32.html">f32</a></code><a href='#impl-FromPrimitive-for-f32' class='anchor'></a><a class='srclink' href='../../../src/num_traits/cast.rs.html#476-537' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.from_isize-3' class="method hidden"><code id='from_isize.v-3'>fn <a href='#method.from_isize' class='fnname'>from_isize</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.isize.html">isize</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f32.html">f32</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#478-480' title='goto source code'>[src]</a></h4><h4 id='method.from_i8-3' class="method hidden"><code id='from_i8.v-3'>fn <a href='#method.from_i8' class='fnname'>from_i8</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i8.html">i8</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f32.html">f32</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#482-484' title='goto source code'>[src]</a></h4><h4 id='method.from_i16-3' class="method hidden"><code id='from_i16.v-3'>fn <a href='#method.from_i16' class='fnname'>from_i16</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i16.html">i16</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f32.html">f32</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#486-488' title='goto source code'>[src]</a></h4><h4 id='method.from_i32-3' class="method hidden"><code id='from_i32.v-3'>fn <a href='#method.from_i32' class='fnname'>from_i32</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i32.html">i32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f32.html">f32</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#490-492' title='goto source code'>[src]</a></h4><h4 id='method.from_i64-2' class="method hidden"><code id='from_i64.v-3'>fn <a href='#method.from_i64' class='fnname'>from_i64</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i64.html">i64</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f32.html">f32</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#494-496' title='goto source code'>[src]</a></h4><h4 id='method.from_i128-3' class="method hidden"><code id='from_i128.v-3'>fn <a href='#method.from_i128' class='fnname'>from_i128</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i128.html">i128</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f32.html">f32</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#499-501' title='goto source code'>[src]</a></h4><h4 id='method.from_usize-3' class="method hidden"><code id='from_usize.v-3'>fn <a href='#method.from_usize' class='fnname'>from_usize</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f32.html">f32</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#504-506' title='goto source code'>[src]</a></h4><h4 id='method.from_u8-3' class="method hidden"><code id='from_u8.v-3'>fn <a href='#method.from_u8' class='fnname'>from_u8</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f32.html">f32</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#508-510' title='goto source code'>[src]</a></h4><h4 id='method.from_u16-3' class="method hidden"><code id='from_u16.v-3'>fn <a href='#method.from_u16' class='fnname'>from_u16</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u16.html">u16</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f32.html">f32</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#512-514' title='goto source code'>[src]</a></h4><h4 id='method.from_u32-3' class="method hidden"><code id='from_u32.v-3'>fn <a href='#method.from_u32' class='fnname'>from_u32</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f32.html">f32</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#516-518' title='goto source code'>[src]</a></h4><h4 id='method.from_u64-2' class="method hidden"><code id='from_u64.v-3'>fn <a href='#method.from_u64' class='fnname'>from_u64</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u64.html">u64</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f32.html">f32</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#520-522' title='goto source code'>[src]</a></h4><h4 id='method.from_u128-3' class="method hidden"><code id='from_u128.v-3'>fn <a href='#method.from_u128' class='fnname'>from_u128</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u128.html">u128</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f32.html">f32</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#525-527' title='goto source code'>[src]</a></h4><h4 id='method.from_f32-3' class="method hidden"><code id='from_f32.v-3'>fn <a href='#method.from_f32' class='fnname'>from_f32</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f32.html">f32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f32.html">f32</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#530-532' title='goto source code'>[src]</a></h4><h4 id='method.from_f64-3' class="method hidden"><code id='from_f64.v-3'>fn <a href='#method.from_f64' class='fnname'>from_f64</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f64.html">f64</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f32.html">f32</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#534-536' title='goto source code'>[src]</a></h4></div><h3 id='impl-FromPrimitive-for-i32' class='impl'><code class='in-band'>impl <a class="trait" href="../../../num/traits/cast/trait.FromPrimitive.html" title="trait num::traits::cast::FromPrimitive">FromPrimitive</a> for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i32.html">i32</a></code><a href='#impl-FromPrimitive-for-i32' class='anchor'></a><a class='srclink' href='../../../src/num_traits/cast.rs.html#476-537' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.from_isize-4' class="method hidden"><code id='from_isize.v-4'>fn <a href='#method.from_isize' class='fnname'>from_isize</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.isize.html">isize</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i32.html">i32</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#478-480' title='goto source code'>[src]</a></h4><h4 id='method.from_i8-4' class="method hidden"><code id='from_i8.v-4'>fn <a href='#method.from_i8' class='fnname'>from_i8</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i8.html">i8</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i32.html">i32</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#482-484' title='goto source code'>[src]</a></h4><h4 id='method.from_i16-4' class="method hidden"><code id='from_i16.v-4'>fn <a href='#method.from_i16' class='fnname'>from_i16</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i16.html">i16</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i32.html">i32</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#486-488' title='goto source code'>[src]</a></h4><h4 id='method.from_i32-4' class="method hidden"><code id='from_i32.v-4'>fn <a href='#method.from_i32' class='fnname'>from_i32</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i32.html">i32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i32.html">i32</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#490-492' title='goto source code'>[src]</a></h4><h4 id='method.from_i64-3' class="method hidden"><code id='from_i64.v-4'>fn <a href='#method.from_i64' class='fnname'>from_i64</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i64.html">i64</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i32.html">i32</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#494-496' title='goto source code'>[src]</a></h4><h4 id='method.from_i128-4' class="method hidden"><code id='from_i128.v-4'>fn <a href='#method.from_i128' class='fnname'>from_i128</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i128.html">i128</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i32.html">i32</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#499-501' title='goto source code'>[src]</a></h4><h4 id='method.from_usize-4' class="method hidden"><code id='from_usize.v-4'>fn <a href='#method.from_usize' class='fnname'>from_usize</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i32.html">i32</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#504-506' title='goto source code'>[src]</a></h4><h4 id='method.from_u8-4' class="method hidden"><code id='from_u8.v-4'>fn <a href='#method.from_u8' class='fnname'>from_u8</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i32.html">i32</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#508-510' title='goto source code'>[src]</a></h4><h4 id='method.from_u16-4' class="method hidden"><code id='from_u16.v-4'>fn <a href='#method.from_u16' class='fnname'>from_u16</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u16.html">u16</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i32.html">i32</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#512-514' title='goto source code'>[src]</a></h4><h4 id='method.from_u32-4' class="method hidden"><code id='from_u32.v-4'>fn <a href='#method.from_u32' class='fnname'>from_u32</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i32.html">i32</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#516-518' title='goto source code'>[src]</a></h4><h4 id='method.from_u64-3' class="method hidden"><code id='from_u64.v-4'>fn <a href='#method.from_u64' class='fnname'>from_u64</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u64.html">u64</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i32.html">i32</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#520-522' title='goto source code'>[src]</a></h4><h4 id='method.from_u128-4' class="method hidden"><code id='from_u128.v-4'>fn <a href='#method.from_u128' class='fnname'>from_u128</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u128.html">u128</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i32.html">i32</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#525-527' title='goto source code'>[src]</a></h4><h4 id='method.from_f32-4' class="method hidden"><code id='from_f32.v-4'>fn <a href='#method.from_f32' class='fnname'>from_f32</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f32.html">f32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i32.html">i32</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#530-532' title='goto source code'>[src]</a></h4><h4 id='method.from_f64-4' class="method hidden"><code id='from_f64.v-4'>fn <a href='#method.from_f64' class='fnname'>from_f64</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f64.html">f64</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i32.html">i32</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#534-536' title='goto source code'>[src]</a></h4></div><h3 id='impl-FromPrimitive-for-u128' class='impl'><code class='in-band'>impl <a class="trait" href="../../../num/traits/cast/trait.FromPrimitive.html" title="trait num::traits::cast::FromPrimitive">FromPrimitive</a> for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u128.html">u128</a></code><a href='#impl-FromPrimitive-for-u128' class='anchor'></a><a class='srclink' href='../../../src/num_traits/cast.rs.html#476-537' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.from_isize-5' class="method hidden"><code id='from_isize.v-5'>fn <a href='#method.from_isize' class='fnname'>from_isize</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.isize.html">isize</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u128.html">u128</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#478-480' title='goto source code'>[src]</a></h4><h4 id='method.from_i8-5' class="method hidden"><code id='from_i8.v-5'>fn <a href='#method.from_i8' class='fnname'>from_i8</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i8.html">i8</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u128.html">u128</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#482-484' title='goto source code'>[src]</a></h4><h4 id='method.from_i16-5' class="method hidden"><code id='from_i16.v-5'>fn <a href='#method.from_i16' class='fnname'>from_i16</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i16.html">i16</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u128.html">u128</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#486-488' title='goto source code'>[src]</a></h4><h4 id='method.from_i32-5' class="method hidden"><code id='from_i32.v-5'>fn <a href='#method.from_i32' class='fnname'>from_i32</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i32.html">i32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u128.html">u128</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#490-492' title='goto source code'>[src]</a></h4><h4 id='method.from_i64-4' class="method hidden"><code id='from_i64.v-5'>fn <a href='#method.from_i64' class='fnname'>from_i64</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i64.html">i64</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u128.html">u128</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#494-496' title='goto source code'>[src]</a></h4><h4 id='method.from_i128-5' class="method hidden"><code id='from_i128.v-5'>fn <a href='#method.from_i128' class='fnname'>from_i128</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i128.html">i128</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u128.html">u128</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#499-501' title='goto source code'>[src]</a></h4><h4 id='method.from_usize-5' class="method hidden"><code id='from_usize.v-5'>fn <a href='#method.from_usize' class='fnname'>from_usize</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u128.html">u128</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#504-506' title='goto source code'>[src]</a></h4><h4 id='method.from_u8-5' class="method hidden"><code id='from_u8.v-5'>fn <a href='#method.from_u8' class='fnname'>from_u8</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u128.html">u128</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#508-510' title='goto source code'>[src]</a></h4><h4 id='method.from_u16-5' class="method hidden"><code id='from_u16.v-5'>fn <a href='#method.from_u16' class='fnname'>from_u16</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u16.html">u16</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u128.html">u128</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#512-514' title='goto source code'>[src]</a></h4><h4 id='method.from_u32-5' class="method hidden"><code id='from_u32.v-5'>fn <a href='#method.from_u32' class='fnname'>from_u32</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u128.html">u128</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#516-518' title='goto source code'>[src]</a></h4><h4 id='method.from_u64-4' class="method hidden"><code id='from_u64.v-5'>fn <a href='#method.from_u64' class='fnname'>from_u64</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u64.html">u64</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u128.html">u128</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#520-522' title='goto source code'>[src]</a></h4><h4 id='method.from_u128-5' class="method hidden"><code id='from_u128.v-5'>fn <a href='#method.from_u128' class='fnname'>from_u128</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u128.html">u128</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u128.html">u128</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#525-527' title='goto source code'>[src]</a></h4><h4 id='method.from_f32-5' class="method hidden"><code id='from_f32.v-5'>fn <a href='#method.from_f32' class='fnname'>from_f32</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f32.html">f32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u128.html">u128</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#530-532' title='goto source code'>[src]</a></h4><h4 id='method.from_f64-5' class="method hidden"><code id='from_f64.v-5'>fn <a href='#method.from_f64' class='fnname'>from_f64</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f64.html">f64</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u128.html">u128</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#534-536' title='goto source code'>[src]</a></h4></div><h3 id='impl-FromPrimitive-for-i128' class='impl'><code class='in-band'>impl <a class="trait" href="../../../num/traits/cast/trait.FromPrimitive.html" title="trait num::traits::cast::FromPrimitive">FromPrimitive</a> for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i128.html">i128</a></code><a href='#impl-FromPrimitive-for-i128' class='anchor'></a><a class='srclink' href='../../../src/num_traits/cast.rs.html#476-537' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.from_isize-6' class="method hidden"><code id='from_isize.v-6'>fn <a href='#method.from_isize' class='fnname'>from_isize</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.isize.html">isize</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i128.html">i128</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#478-480' title='goto source code'>[src]</a></h4><h4 id='method.from_i8-6' class="method hidden"><code id='from_i8.v-6'>fn <a href='#method.from_i8' class='fnname'>from_i8</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i8.html">i8</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i128.html">i128</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#482-484' title='goto source code'>[src]</a></h4><h4 id='method.from_i16-6' class="method hidden"><code id='from_i16.v-6'>fn <a href='#method.from_i16' class='fnname'>from_i16</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i16.html">i16</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i128.html">i128</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#486-488' title='goto source code'>[src]</a></h4><h4 id='method.from_i32-6' class="method hidden"><code id='from_i32.v-6'>fn <a href='#method.from_i32' class='fnname'>from_i32</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i32.html">i32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i128.html">i128</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#490-492' title='goto source code'>[src]</a></h4><h4 id='method.from_i64-5' class="method hidden"><code id='from_i64.v-6'>fn <a href='#method.from_i64' class='fnname'>from_i64</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i64.html">i64</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i128.html">i128</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#494-496' title='goto source code'>[src]</a></h4><h4 id='method.from_i128-6' class="method hidden"><code id='from_i128.v-6'>fn <a href='#method.from_i128' class='fnname'>from_i128</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i128.html">i128</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i128.html">i128</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#499-501' title='goto source code'>[src]</a></h4><h4 id='method.from_usize-6' class="method hidden"><code id='from_usize.v-6'>fn <a href='#method.from_usize' class='fnname'>from_usize</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i128.html">i128</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#504-506' title='goto source code'>[src]</a></h4><h4 id='method.from_u8-6' class="method hidden"><code id='from_u8.v-6'>fn <a href='#method.from_u8' class='fnname'>from_u8</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i128.html">i128</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#508-510' title='goto source code'>[src]</a></h4><h4 id='method.from_u16-6' class="method hidden"><code id='from_u16.v-6'>fn <a href='#method.from_u16' class='fnname'>from_u16</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u16.html">u16</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i128.html">i128</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#512-514' title='goto source code'>[src]</a></h4><h4 id='method.from_u32-6' class="method hidden"><code id='from_u32.v-6'>fn <a href='#method.from_u32' class='fnname'>from_u32</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i128.html">i128</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#516-518' title='goto source code'>[src]</a></h4><h4 id='method.from_u64-5' class="method hidden"><code id='from_u64.v-6'>fn <a href='#method.from_u64' class='fnname'>from_u64</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u64.html">u64</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i128.html">i128</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#520-522' title='goto source code'>[src]</a></h4><h4 id='method.from_u128-6' class="method hidden"><code id='from_u128.v-6'>fn <a href='#method.from_u128' class='fnname'>from_u128</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u128.html">u128</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i128.html">i128</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#525-527' title='goto source code'>[src]</a></h4><h4 id='method.from_f32-6' class="method hidden"><code id='from_f32.v-6'>fn <a href='#method.from_f32' class='fnname'>from_f32</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f32.html">f32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i128.html">i128</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#530-532' title='goto source code'>[src]</a></h4><h4 id='method.from_f64-6' class="method hidden"><code id='from_f64.v-6'>fn <a href='#method.from_f64' class='fnname'>from_f64</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f64.html">f64</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i128.html">i128</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#534-536' title='goto source code'>[src]</a></h4></div><h3 id='impl-FromPrimitive-for-usize' class='impl'><code class='in-band'>impl <a class="trait" href="../../../num/traits/cast/trait.FromPrimitive.html" title="trait num::traits::cast::FromPrimitive">FromPrimitive</a> for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a></code><a href='#impl-FromPrimitive-for-usize' class='anchor'></a><a class='srclink' href='../../../src/num_traits/cast.rs.html#476-537' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.from_isize-7' class="method hidden"><code id='from_isize.v-7'>fn <a href='#method.from_isize' class='fnname'>from_isize</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.isize.html">isize</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#478-480' title='goto source code'>[src]</a></h4><h4 id='method.from_i8-7' class="method hidden"><code id='from_i8.v-7'>fn <a href='#method.from_i8' class='fnname'>from_i8</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i8.html">i8</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#482-484' title='goto source code'>[src]</a></h4><h4 id='method.from_i16-7' class="method hidden"><code id='from_i16.v-7'>fn <a href='#method.from_i16' class='fnname'>from_i16</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i16.html">i16</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#486-488' title='goto source code'>[src]</a></h4><h4 id='method.from_i32-7' class="method hidden"><code id='from_i32.v-7'>fn <a href='#method.from_i32' class='fnname'>from_i32</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i32.html">i32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#490-492' title='goto source code'>[src]</a></h4><h4 id='method.from_i64-6' class="method hidden"><code id='from_i64.v-7'>fn <a href='#method.from_i64' class='fnname'>from_i64</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i64.html">i64</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#494-496' title='goto source code'>[src]</a></h4><h4 id='method.from_i128-7' class="method hidden"><code id='from_i128.v-7'>fn <a href='#method.from_i128' class='fnname'>from_i128</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i128.html">i128</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#499-501' title='goto source code'>[src]</a></h4><h4 id='method.from_usize-7' class="method hidden"><code id='from_usize.v-7'>fn <a href='#method.from_usize' class='fnname'>from_usize</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#504-506' title='goto source code'>[src]</a></h4><h4 id='method.from_u8-7' class="method hidden"><code id='from_u8.v-7'>fn <a href='#method.from_u8' class='fnname'>from_u8</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#508-510' title='goto source code'>[src]</a></h4><h4 id='method.from_u16-7' class="method hidden"><code id='from_u16.v-7'>fn <a href='#method.from_u16' class='fnname'>from_u16</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u16.html">u16</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#512-514' title='goto source code'>[src]</a></h4><h4 id='method.from_u32-7' class="method hidden"><code id='from_u32.v-7'>fn <a href='#method.from_u32' class='fnname'>from_u32</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#516-518' title='goto source code'>[src]</a></h4><h4 id='method.from_u64-6' class="method hidden"><code id='from_u64.v-7'>fn <a href='#method.from_u64' class='fnname'>from_u64</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u64.html">u64</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#520-522' title='goto source code'>[src]</a></h4><h4 id='method.from_u128-7' class="method hidden"><code id='from_u128.v-7'>fn <a href='#method.from_u128' class='fnname'>from_u128</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u128.html">u128</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#525-527' title='goto source code'>[src]</a></h4><h4 id='method.from_f32-7' class="method hidden"><code id='from_f32.v-7'>fn <a href='#method.from_f32' class='fnname'>from_f32</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f32.html">f32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#530-532' title='goto source code'>[src]</a></h4><h4 id='method.from_f64-7' class="method hidden"><code id='from_f64.v-7'>fn <a href='#method.from_f64' class='fnname'>from_f64</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f64.html">f64</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#534-536' title='goto source code'>[src]</a></h4></div><h3 id='impl-FromPrimitive-for-u16' class='impl'><code class='in-band'>impl <a class="trait" href="../../../num/traits/cast/trait.FromPrimitive.html" title="trait num::traits::cast::FromPrimitive">FromPrimitive</a> for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u16.html">u16</a></code><a href='#impl-FromPrimitive-for-u16' class='anchor'></a><a class='srclink' href='../../../src/num_traits/cast.rs.html#476-537' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.from_isize-8' class="method hidden"><code id='from_isize.v-8'>fn <a href='#method.from_isize' class='fnname'>from_isize</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.isize.html">isize</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u16.html">u16</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#478-480' title='goto source code'>[src]</a></h4><h4 id='method.from_i8-8' class="method hidden"><code id='from_i8.v-8'>fn <a href='#method.from_i8' class='fnname'>from_i8</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i8.html">i8</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u16.html">u16</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#482-484' title='goto source code'>[src]</a></h4><h4 id='method.from_i16-8' class="method hidden"><code id='from_i16.v-8'>fn <a href='#method.from_i16' class='fnname'>from_i16</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i16.html">i16</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u16.html">u16</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#486-488' title='goto source code'>[src]</a></h4><h4 id='method.from_i32-8' class="method hidden"><code id='from_i32.v-8'>fn <a href='#method.from_i32' class='fnname'>from_i32</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i32.html">i32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u16.html">u16</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#490-492' title='goto source code'>[src]</a></h4><h4 id='method.from_i64-7' class="method hidden"><code id='from_i64.v-8'>fn <a href='#method.from_i64' class='fnname'>from_i64</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i64.html">i64</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u16.html">u16</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#494-496' title='goto source code'>[src]</a></h4><h4 id='method.from_i128-8' class="method hidden"><code id='from_i128.v-8'>fn <a href='#method.from_i128' class='fnname'>from_i128</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i128.html">i128</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u16.html">u16</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#499-501' title='goto source code'>[src]</a></h4><h4 id='method.from_usize-8' class="method hidden"><code id='from_usize.v-8'>fn <a href='#method.from_usize' class='fnname'>from_usize</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u16.html">u16</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#504-506' title='goto source code'>[src]</a></h4><h4 id='method.from_u8-8' class="method hidden"><code id='from_u8.v-8'>fn <a href='#method.from_u8' class='fnname'>from_u8</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u16.html">u16</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#508-510' title='goto source code'>[src]</a></h4><h4 id='method.from_u16-8' class="method hidden"><code id='from_u16.v-8'>fn <a href='#method.from_u16' class='fnname'>from_u16</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u16.html">u16</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u16.html">u16</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#512-514' title='goto source code'>[src]</a></h4><h4 id='method.from_u32-8' class="method hidden"><code id='from_u32.v-8'>fn <a href='#method.from_u32' class='fnname'>from_u32</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u16.html">u16</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#516-518' title='goto source code'>[src]</a></h4><h4 id='method.from_u64-7' class="method hidden"><code id='from_u64.v-8'>fn <a href='#method.from_u64' class='fnname'>from_u64</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u64.html">u64</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u16.html">u16</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#520-522' title='goto source code'>[src]</a></h4><h4 id='method.from_u128-8' class="method hidden"><code id='from_u128.v-8'>fn <a href='#method.from_u128' class='fnname'>from_u128</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u128.html">u128</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u16.html">u16</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#525-527' title='goto source code'>[src]</a></h4><h4 id='method.from_f32-8' class="method hidden"><code id='from_f32.v-8'>fn <a href='#method.from_f32' class='fnname'>from_f32</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f32.html">f32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u16.html">u16</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#530-532' title='goto source code'>[src]</a></h4><h4 id='method.from_f64-8' class="method hidden"><code id='from_f64.v-8'>fn <a href='#method.from_f64' class='fnname'>from_f64</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f64.html">f64</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u16.html">u16</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#534-536' title='goto source code'>[src]</a></h4></div><h3 id='impl-FromPrimitive-for-u8' class='impl'><code class='in-band'>impl <a class="trait" href="../../../num/traits/cast/trait.FromPrimitive.html" title="trait num::traits::cast::FromPrimitive">FromPrimitive</a> for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a></code><a href='#impl-FromPrimitive-for-u8' class='anchor'></a><a class='srclink' href='../../../src/num_traits/cast.rs.html#476-537' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.from_isize-9' class="method hidden"><code id='from_isize.v-9'>fn <a href='#method.from_isize' class='fnname'>from_isize</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.isize.html">isize</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#478-480' title='goto source code'>[src]</a></h4><h4 id='method.from_i8-9' class="method hidden"><code id='from_i8.v-9'>fn <a href='#method.from_i8' class='fnname'>from_i8</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i8.html">i8</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#482-484' title='goto source code'>[src]</a></h4><h4 id='method.from_i16-9' class="method hidden"><code id='from_i16.v-9'>fn <a href='#method.from_i16' class='fnname'>from_i16</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i16.html">i16</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#486-488' title='goto source code'>[src]</a></h4><h4 id='method.from_i32-9' class="method hidden"><code id='from_i32.v-9'>fn <a href='#method.from_i32' class='fnname'>from_i32</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i32.html">i32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#490-492' title='goto source code'>[src]</a></h4><h4 id='method.from_i64-8' class="method hidden"><code id='from_i64.v-9'>fn <a href='#method.from_i64' class='fnname'>from_i64</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i64.html">i64</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#494-496' title='goto source code'>[src]</a></h4><h4 id='method.from_i128-9' class="method hidden"><code id='from_i128.v-9'>fn <a href='#method.from_i128' class='fnname'>from_i128</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i128.html">i128</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#499-501' title='goto source code'>[src]</a></h4><h4 id='method.from_usize-9' class="method hidden"><code id='from_usize.v-9'>fn <a href='#method.from_usize' class='fnname'>from_usize</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#504-506' title='goto source code'>[src]</a></h4><h4 id='method.from_u8-9' class="method hidden"><code id='from_u8.v-9'>fn <a href='#method.from_u8' class='fnname'>from_u8</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#508-510' title='goto source code'>[src]</a></h4><h4 id='method.from_u16-9' class="method hidden"><code id='from_u16.v-9'>fn <a href='#method.from_u16' class='fnname'>from_u16</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u16.html">u16</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#512-514' title='goto source code'>[src]</a></h4><h4 id='method.from_u32-9' class="method hidden"><code id='from_u32.v-9'>fn <a href='#method.from_u32' class='fnname'>from_u32</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#516-518' title='goto source code'>[src]</a></h4><h4 id='method.from_u64-8' class="method hidden"><code id='from_u64.v-9'>fn <a href='#method.from_u64' class='fnname'>from_u64</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u64.html">u64</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#520-522' title='goto source code'>[src]</a></h4><h4 id='method.from_u128-9' class="method hidden"><code id='from_u128.v-9'>fn <a href='#method.from_u128' class='fnname'>from_u128</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u128.html">u128</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#525-527' title='goto source code'>[src]</a></h4><h4 id='method.from_f32-9' class="method hidden"><code id='from_f32.v-9'>fn <a href='#method.from_f32' class='fnname'>from_f32</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f32.html">f32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#530-532' title='goto source code'>[src]</a></h4><h4 id='method.from_f64-9' class="method hidden"><code id='from_f64.v-9'>fn <a href='#method.from_f64' class='fnname'>from_f64</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f64.html">f64</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#534-536' title='goto source code'>[src]</a></h4></div><h3 id='impl-FromPrimitive-for-i8' class='impl'><code class='in-band'>impl <a class="trait" href="../../../num/traits/cast/trait.FromPrimitive.html" title="trait num::traits::cast::FromPrimitive">FromPrimitive</a> for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i8.html">i8</a></code><a href='#impl-FromPrimitive-for-i8' class='anchor'></a><a class='srclink' href='../../../src/num_traits/cast.rs.html#476-537' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.from_isize-10' class="method hidden"><code id='from_isize.v-10'>fn <a href='#method.from_isize' class='fnname'>from_isize</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.isize.html">isize</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i8.html">i8</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#478-480' title='goto source code'>[src]</a></h4><h4 id='method.from_i8-10' class="method hidden"><code id='from_i8.v-10'>fn <a href='#method.from_i8' class='fnname'>from_i8</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i8.html">i8</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i8.html">i8</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#482-484' title='goto source code'>[src]</a></h4><h4 id='method.from_i16-10' class="method hidden"><code id='from_i16.v-10'>fn <a href='#method.from_i16' class='fnname'>from_i16</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i16.html">i16</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i8.html">i8</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#486-488' title='goto source code'>[src]</a></h4><h4 id='method.from_i32-10' class="method hidden"><code id='from_i32.v-10'>fn <a href='#method.from_i32' class='fnname'>from_i32</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i32.html">i32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i8.html">i8</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#490-492' title='goto source code'>[src]</a></h4><h4 id='method.from_i64-9' class="method hidden"><code id='from_i64.v-10'>fn <a href='#method.from_i64' class='fnname'>from_i64</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i64.html">i64</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i8.html">i8</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#494-496' title='goto source code'>[src]</a></h4><h4 id='method.from_i128-10' class="method hidden"><code id='from_i128.v-10'>fn <a href='#method.from_i128' class='fnname'>from_i128</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i128.html">i128</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i8.html">i8</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#499-501' title='goto source code'>[src]</a></h4><h4 id='method.from_usize-10' class="method hidden"><code id='from_usize.v-10'>fn <a href='#method.from_usize' class='fnname'>from_usize</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i8.html">i8</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#504-506' title='goto source code'>[src]</a></h4><h4 id='method.from_u8-10' class="method hidden"><code id='from_u8.v-10'>fn <a href='#method.from_u8' class='fnname'>from_u8</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i8.html">i8</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#508-510' title='goto source code'>[src]</a></h4><h4 id='method.from_u16-10' class="method hidden"><code id='from_u16.v-10'>fn <a href='#method.from_u16' class='fnname'>from_u16</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u16.html">u16</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i8.html">i8</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#512-514' title='goto source code'>[src]</a></h4><h4 id='method.from_u32-10' class="method hidden"><code id='from_u32.v-10'>fn <a href='#method.from_u32' class='fnname'>from_u32</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i8.html">i8</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#516-518' title='goto source code'>[src]</a></h4><h4 id='method.from_u64-9' class="method hidden"><code id='from_u64.v-10'>fn <a href='#method.from_u64' class='fnname'>from_u64</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u64.html">u64</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i8.html">i8</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#520-522' title='goto source code'>[src]</a></h4><h4 id='method.from_u128-10' class="method hidden"><code id='from_u128.v-10'>fn <a href='#method.from_u128' class='fnname'>from_u128</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u128.html">u128</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i8.html">i8</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#525-527' title='goto source code'>[src]</a></h4><h4 id='method.from_f32-10' class="method hidden"><code id='from_f32.v-10'>fn <a href='#method.from_f32' class='fnname'>from_f32</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f32.html">f32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i8.html">i8</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#530-532' title='goto source code'>[src]</a></h4><h4 id='method.from_f64-10' class="method hidden"><code id='from_f64.v-10'>fn <a href='#method.from_f64' class='fnname'>from_f64</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f64.html">f64</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i8.html">i8</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#534-536' title='goto source code'>[src]</a></h4></div><h3 id='impl-FromPrimitive-for-u64' class='impl'><code class='in-band'>impl <a class="trait" href="../../../num/traits/cast/trait.FromPrimitive.html" title="trait num::traits::cast::FromPrimitive">FromPrimitive</a> for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u64.html">u64</a></code><a href='#impl-FromPrimitive-for-u64' class='anchor'></a><a class='srclink' href='../../../src/num_traits/cast.rs.html#476-537' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.from_isize-11' class="method hidden"><code id='from_isize.v-11'>fn <a href='#method.from_isize' class='fnname'>from_isize</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.isize.html">isize</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u64.html">u64</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#478-480' title='goto source code'>[src]</a></h4><h4 id='method.from_i8-11' class="method hidden"><code id='from_i8.v-11'>fn <a href='#method.from_i8' class='fnname'>from_i8</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i8.html">i8</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u64.html">u64</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#482-484' title='goto source code'>[src]</a></h4><h4 id='method.from_i16-11' class="method hidden"><code id='from_i16.v-11'>fn <a href='#method.from_i16' class='fnname'>from_i16</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i16.html">i16</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u64.html">u64</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#486-488' title='goto source code'>[src]</a></h4><h4 id='method.from_i32-11' class="method hidden"><code id='from_i32.v-11'>fn <a href='#method.from_i32' class='fnname'>from_i32</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i32.html">i32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u64.html">u64</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#490-492' title='goto source code'>[src]</a></h4><h4 id='method.from_i64-10' class="method hidden"><code id='from_i64.v-11'>fn <a href='#method.from_i64' class='fnname'>from_i64</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i64.html">i64</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u64.html">u64</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#494-496' title='goto source code'>[src]</a></h4><h4 id='method.from_i128-11' class="method hidden"><code id='from_i128.v-11'>fn <a href='#method.from_i128' class='fnname'>from_i128</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i128.html">i128</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u64.html">u64</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#499-501' title='goto source code'>[src]</a></h4><h4 id='method.from_usize-11' class="method hidden"><code id='from_usize.v-11'>fn <a href='#method.from_usize' class='fnname'>from_usize</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u64.html">u64</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#504-506' title='goto source code'>[src]</a></h4><h4 id='method.from_u8-11' class="method hidden"><code id='from_u8.v-11'>fn <a href='#method.from_u8' class='fnname'>from_u8</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u64.html">u64</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#508-510' title='goto source code'>[src]</a></h4><h4 id='method.from_u16-11' class="method hidden"><code id='from_u16.v-11'>fn <a href='#method.from_u16' class='fnname'>from_u16</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u16.html">u16</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u64.html">u64</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#512-514' title='goto source code'>[src]</a></h4><h4 id='method.from_u32-11' class="method hidden"><code id='from_u32.v-11'>fn <a href='#method.from_u32' class='fnname'>from_u32</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u64.html">u64</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#516-518' title='goto source code'>[src]</a></h4><h4 id='method.from_u64-10' class="method hidden"><code id='from_u64.v-11'>fn <a href='#method.from_u64' class='fnname'>from_u64</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u64.html">u64</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u64.html">u64</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#520-522' title='goto source code'>[src]</a></h4><h4 id='method.from_u128-11' class="method hidden"><code id='from_u128.v-11'>fn <a href='#method.from_u128' class='fnname'>from_u128</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u128.html">u128</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u64.html">u64</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#525-527' title='goto source code'>[src]</a></h4><h4 id='method.from_f32-11' class="method hidden"><code id='from_f32.v-11'>fn <a href='#method.from_f32' class='fnname'>from_f32</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f32.html">f32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u64.html">u64</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#530-532' title='goto source code'>[src]</a></h4><h4 id='method.from_f64-11' class="method hidden"><code id='from_f64.v-11'>fn <a href='#method.from_f64' class='fnname'>from_f64</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f64.html">f64</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u64.html">u64</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#534-536' title='goto source code'>[src]</a></h4></div><h3 id='impl-FromPrimitive-for-i16' class='impl'><code class='in-band'>impl <a class="trait" href="../../../num/traits/cast/trait.FromPrimitive.html" title="trait num::traits::cast::FromPrimitive">FromPrimitive</a> for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i16.html">i16</a></code><a href='#impl-FromPrimitive-for-i16' class='anchor'></a><a class='srclink' href='../../../src/num_traits/cast.rs.html#476-537' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.from_isize-12' class="method hidden"><code id='from_isize.v-12'>fn <a href='#method.from_isize' class='fnname'>from_isize</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.isize.html">isize</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i16.html">i16</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#478-480' title='goto source code'>[src]</a></h4><h4 id='method.from_i8-12' class="method hidden"><code id='from_i8.v-12'>fn <a href='#method.from_i8' class='fnname'>from_i8</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i8.html">i8</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i16.html">i16</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#482-484' title='goto source code'>[src]</a></h4><h4 id='method.from_i16-12' class="method hidden"><code id='from_i16.v-12'>fn <a href='#method.from_i16' class='fnname'>from_i16</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i16.html">i16</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i16.html">i16</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#486-488' title='goto source code'>[src]</a></h4><h4 id='method.from_i32-12' class="method hidden"><code id='from_i32.v-12'>fn <a href='#method.from_i32' class='fnname'>from_i32</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i32.html">i32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i16.html">i16</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#490-492' title='goto source code'>[src]</a></h4><h4 id='method.from_i64-11' class="method hidden"><code id='from_i64.v-12'>fn <a href='#method.from_i64' class='fnname'>from_i64</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i64.html">i64</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i16.html">i16</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#494-496' title='goto source code'>[src]</a></h4><h4 id='method.from_i128-12' class="method hidden"><code id='from_i128.v-12'>fn <a href='#method.from_i128' class='fnname'>from_i128</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i128.html">i128</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i16.html">i16</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#499-501' title='goto source code'>[src]</a></h4><h4 id='method.from_usize-12' class="method hidden"><code id='from_usize.v-12'>fn <a href='#method.from_usize' class='fnname'>from_usize</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i16.html">i16</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#504-506' title='goto source code'>[src]</a></h4><h4 id='method.from_u8-12' class="method hidden"><code id='from_u8.v-12'>fn <a href='#method.from_u8' class='fnname'>from_u8</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i16.html">i16</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#508-510' title='goto source code'>[src]</a></h4><h4 id='method.from_u16-12' class="method hidden"><code id='from_u16.v-12'>fn <a href='#method.from_u16' class='fnname'>from_u16</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u16.html">u16</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i16.html">i16</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#512-514' title='goto source code'>[src]</a></h4><h4 id='method.from_u32-12' class="method hidden"><code id='from_u32.v-12'>fn <a href='#method.from_u32' class='fnname'>from_u32</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i16.html">i16</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#516-518' title='goto source code'>[src]</a></h4><h4 id='method.from_u64-11' class="method hidden"><code id='from_u64.v-12'>fn <a href='#method.from_u64' class='fnname'>from_u64</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u64.html">u64</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i16.html">i16</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#520-522' title='goto source code'>[src]</a></h4><h4 id='method.from_u128-12' class="method hidden"><code id='from_u128.v-12'>fn <a href='#method.from_u128' class='fnname'>from_u128</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u128.html">u128</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i16.html">i16</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#525-527' title='goto source code'>[src]</a></h4><h4 id='method.from_f32-12' class="method hidden"><code id='from_f32.v-12'>fn <a href='#method.from_f32' class='fnname'>from_f32</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f32.html">f32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i16.html">i16</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#530-532' title='goto source code'>[src]</a></h4><h4 id='method.from_f64-12' class="method hidden"><code id='from_f64.v-12'>fn <a href='#method.from_f64' class='fnname'>from_f64</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f64.html">f64</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i16.html">i16</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#534-536' title='goto source code'>[src]</a></h4></div><h3 id='impl-FromPrimitive-for-f64' class='impl'><code class='in-band'>impl <a class="trait" href="../../../num/traits/cast/trait.FromPrimitive.html" title="trait num::traits::cast::FromPrimitive">FromPrimitive</a> for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f64.html">f64</a></code><a href='#impl-FromPrimitive-for-f64' class='anchor'></a><a class='srclink' href='../../../src/num_traits/cast.rs.html#476-537' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.from_isize-13' class="method hidden"><code id='from_isize.v-13'>fn <a href='#method.from_isize' class='fnname'>from_isize</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.isize.html">isize</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f64.html">f64</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#478-480' title='goto source code'>[src]</a></h4><h4 id='method.from_i8-13' class="method hidden"><code id='from_i8.v-13'>fn <a href='#method.from_i8' class='fnname'>from_i8</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i8.html">i8</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f64.html">f64</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#482-484' title='goto source code'>[src]</a></h4><h4 id='method.from_i16-13' class="method hidden"><code id='from_i16.v-13'>fn <a href='#method.from_i16' class='fnname'>from_i16</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i16.html">i16</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f64.html">f64</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#486-488' title='goto source code'>[src]</a></h4><h4 id='method.from_i32-13' class="method hidden"><code id='from_i32.v-13'>fn <a href='#method.from_i32' class='fnname'>from_i32</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i32.html">i32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f64.html">f64</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#490-492' title='goto source code'>[src]</a></h4><h4 id='method.from_i64-12' class="method hidden"><code id='from_i64.v-13'>fn <a href='#method.from_i64' class='fnname'>from_i64</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i64.html">i64</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f64.html">f64</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#494-496' title='goto source code'>[src]</a></h4><h4 id='method.from_i128-13' class="method hidden"><code id='from_i128.v-13'>fn <a href='#method.from_i128' class='fnname'>from_i128</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i128.html">i128</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f64.html">f64</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#499-501' title='goto source code'>[src]</a></h4><h4 id='method.from_usize-13' class="method hidden"><code id='from_usize.v-13'>fn <a href='#method.from_usize' class='fnname'>from_usize</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f64.html">f64</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#504-506' title='goto source code'>[src]</a></h4><h4 id='method.from_u8-13' class="method hidden"><code id='from_u8.v-13'>fn <a href='#method.from_u8' class='fnname'>from_u8</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f64.html">f64</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#508-510' title='goto source code'>[src]</a></h4><h4 id='method.from_u16-13' class="method hidden"><code id='from_u16.v-13'>fn <a href='#method.from_u16' class='fnname'>from_u16</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u16.html">u16</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f64.html">f64</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#512-514' title='goto source code'>[src]</a></h4><h4 id='method.from_u32-13' class="method hidden"><code id='from_u32.v-13'>fn <a href='#method.from_u32' class='fnname'>from_u32</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f64.html">f64</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#516-518' title='goto source code'>[src]</a></h4><h4 id='method.from_u64-12' class="method hidden"><code id='from_u64.v-13'>fn <a href='#method.from_u64' class='fnname'>from_u64</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u64.html">u64</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f64.html">f64</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#520-522' title='goto source code'>[src]</a></h4><h4 id='method.from_u128-13' class="method hidden"><code id='from_u128.v-13'>fn <a href='#method.from_u128' class='fnname'>from_u128</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u128.html">u128</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f64.html">f64</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#525-527' title='goto source code'>[src]</a></h4><h4 id='method.from_f32-13' class="method hidden"><code id='from_f32.v-13'>fn <a href='#method.from_f32' class='fnname'>from_f32</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f32.html">f32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f64.html">f64</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#530-532' title='goto source code'>[src]</a></h4><h4 id='method.from_f64-13' class="method hidden"><code id='from_f64.v-13'>fn <a href='#method.from_f64' class='fnname'>from_f64</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f64.html">f64</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f64.html">f64</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#534-536' title='goto source code'>[src]</a></h4></div><h3 id='impl-FromPrimitive-for-isize' class='impl'><code class='in-band'>impl <a class="trait" href="../../../num/traits/cast/trait.FromPrimitive.html" title="trait num::traits::cast::FromPrimitive">FromPrimitive</a> for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.isize.html">isize</a></code><a href='#impl-FromPrimitive-for-isize' class='anchor'></a><a class='srclink' href='../../../src/num_traits/cast.rs.html#476-537' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.from_isize-14' class="method hidden"><code id='from_isize.v-14'>fn <a href='#method.from_isize' class='fnname'>from_isize</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.isize.html">isize</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.isize.html">isize</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#478-480' title='goto source code'>[src]</a></h4><h4 id='method.from_i8-14' class="method hidden"><code id='from_i8.v-14'>fn <a href='#method.from_i8' class='fnname'>from_i8</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i8.html">i8</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.isize.html">isize</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#482-484' title='goto source code'>[src]</a></h4><h4 id='method.from_i16-14' class="method hidden"><code id='from_i16.v-14'>fn <a href='#method.from_i16' class='fnname'>from_i16</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i16.html">i16</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.isize.html">isize</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#486-488' title='goto source code'>[src]</a></h4><h4 id='method.from_i32-14' class="method hidden"><code id='from_i32.v-14'>fn <a href='#method.from_i32' class='fnname'>from_i32</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i32.html">i32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.isize.html">isize</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#490-492' title='goto source code'>[src]</a></h4><h4 id='method.from_i64-13' class="method hidden"><code id='from_i64.v-14'>fn <a href='#method.from_i64' class='fnname'>from_i64</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i64.html">i64</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.isize.html">isize</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#494-496' title='goto source code'>[src]</a></h4><h4 id='method.from_i128-14' class="method hidden"><code id='from_i128.v-14'>fn <a href='#method.from_i128' class='fnname'>from_i128</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i128.html">i128</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.isize.html">isize</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#499-501' title='goto source code'>[src]</a></h4><h4 id='method.from_usize-14' class="method hidden"><code id='from_usize.v-14'>fn <a href='#method.from_usize' class='fnname'>from_usize</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.isize.html">isize</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#504-506' title='goto source code'>[src]</a></h4><h4 id='method.from_u8-14' class="method hidden"><code id='from_u8.v-14'>fn <a href='#method.from_u8' class='fnname'>from_u8</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.isize.html">isize</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#508-510' title='goto source code'>[src]</a></h4><h4 id='method.from_u16-14' class="method hidden"><code id='from_u16.v-14'>fn <a href='#method.from_u16' class='fnname'>from_u16</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u16.html">u16</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.isize.html">isize</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#512-514' title='goto source code'>[src]</a></h4><h4 id='method.from_u32-14' class="method hidden"><code id='from_u32.v-14'>fn <a href='#method.from_u32' class='fnname'>from_u32</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.isize.html">isize</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#516-518' title='goto source code'>[src]</a></h4><h4 id='method.from_u64-13' class="method hidden"><code id='from_u64.v-14'>fn <a href='#method.from_u64' class='fnname'>from_u64</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u64.html">u64</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.isize.html">isize</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#520-522' title='goto source code'>[src]</a></h4><h4 id='method.from_u128-14' class="method hidden"><code id='from_u128.v-14'>fn <a href='#method.from_u128' class='fnname'>from_u128</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u128.html">u128</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.isize.html">isize</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#525-527' title='goto source code'>[src]</a></h4><h4 id='method.from_f32-14' class="method hidden"><code id='from_f32.v-14'>fn <a href='#method.from_f32' class='fnname'>from_f32</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f32.html">f32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.isize.html">isize</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#530-532' title='goto source code'>[src]</a></h4><h4 id='method.from_f64-14' class="method hidden"><code id='from_f64.v-14'>fn <a href='#method.from_f64' class='fnname'>from_f64</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f64.html">f64</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.isize.html">isize</a>&gt;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#534-536' title='goto source code'>[src]</a></h4></div><h3 id='impl-FromPrimitive-for-Wrapping%3CT%3E' class='impl'><code class='in-band'>impl&lt;T&gt; <a class="trait" href="../../../num/traits/cast/trait.FromPrimitive.html" title="trait num::traits::cast::FromPrimitive">FromPrimitive</a> 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;T: <a class="trait" href="../../../num/traits/cast/trait.FromPrimitive.html" title="trait num::traits::cast::FromPrimitive">FromPrimitive</a>,&nbsp;</span></code><a href='#impl-FromPrimitive-for-Wrapping%3CT%3E' class='anchor'></a><a class='srclink' href='../../../src/num_traits/cast.rs.html#601-622' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.from_isize-15' class="method hidden"><code id='from_isize.v-15'>fn <a href='#method.from_isize' class='fnname'>from_isize</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.isize.html">isize</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<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;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#595-597' title='goto source code'>[src]</a></h4><h4 id='method.from_i8-15' class="method hidden"><code id='from_i8.v-15'>fn <a href='#method.from_i8' class='fnname'>from_i8</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i8.html">i8</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<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;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#595-597' title='goto source code'>[src]</a></h4><h4 id='method.from_i16-15' class="method hidden"><code id='from_i16.v-15'>fn <a href='#method.from_i16' class='fnname'>from_i16</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i16.html">i16</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<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;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#595-597' title='goto source code'>[src]</a></h4><h4 id='method.from_i32-15' class="method hidden"><code id='from_i32.v-15'>fn <a href='#method.from_i32' class='fnname'>from_i32</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i32.html">i32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<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;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#595-597' title='goto source code'>[src]</a></h4><h4 id='method.from_i64-14' class="method hidden"><code id='from_i64.v-15'>fn <a href='#method.from_i64' class='fnname'>from_i64</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i64.html">i64</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<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;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#595-597' title='goto source code'>[src]</a></h4><h4 id='method.from_i128-15' class="method hidden"><code id='from_i128.v-15'>fn <a href='#method.from_i128' class='fnname'>from_i128</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i128.html">i128</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<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;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#595-597' title='goto source code'>[src]</a></h4><h4 id='method.from_usize-15' class="method hidden"><code id='from_usize.v-15'>fn <a href='#method.from_usize' class='fnname'>from_usize</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<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;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#595-597' title='goto source code'>[src]</a></h4><h4 id='method.from_u8-15' class="method hidden"><code id='from_u8.v-15'>fn <a href='#method.from_u8' class='fnname'>from_u8</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<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;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#595-597' title='goto source code'>[src]</a></h4><h4 id='method.from_u16-15' class="method hidden"><code id='from_u16.v-15'>fn <a href='#method.from_u16' class='fnname'>from_u16</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u16.html">u16</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<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;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#595-597' title='goto source code'>[src]</a></h4><h4 id='method.from_u32-15' class="method hidden"><code id='from_u32.v-15'>fn <a href='#method.from_u32' class='fnname'>from_u32</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<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;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#595-597' title='goto source code'>[src]</a></h4><h4 id='method.from_u64-14' class="method hidden"><code id='from_u64.v-15'>fn <a href='#method.from_u64' class='fnname'>from_u64</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u64.html">u64</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<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;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#595-597' title='goto source code'>[src]</a></h4><h4 id='method.from_u128-15' class="method hidden"><code id='from_u128.v-15'>fn <a href='#method.from_u128' class='fnname'>from_u128</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u128.html">u128</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<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;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#595-597' title='goto source code'>[src]</a></h4><h4 id='method.from_f32-15' class="method hidden"><code id='from_f32.v-15'>fn <a href='#method.from_f32' class='fnname'>from_f32</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f32.html">f32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<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;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#595-597' title='goto source code'>[src]</a></h4><h4 id='method.from_f64-15' class="method hidden"><code id='from_f64.v-15'>fn <a href='#method.from_f64' class='fnname'>from_f64</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f64.html">f64</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<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;</code><a class='srclink' href='../../../src/num_traits/cast.rs.html#595-597' title='goto source code'>[src]</a></h4></div><span class='loading-content'>Loading content...</span>
<h2 id='implementors' class='small-section-header'>Implementors<a href='#implementors' class='anchor'></a></h2><div class='item-list' id='implementors-list'><h3 id='impl-FromPrimitive' class='impl'><code class='in-band'>impl FromPrimitive for <a class="struct" href="../../../num/bigint/struct.BigInt.html" title="struct num::bigint::BigInt">BigInt</a></code><a href='#impl-FromPrimitive' class='anchor'></a><a class='srclink' href='../../../src/num_bigint/bigint.rs.html#1105-1124' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.from_i64-15' class="method hidden"><code id='from_i64.v-16'>fn <a href='#method.from_i64-15' class='fnname'>from_i64</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i64.html">i64</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../../../num/bigint/struct.BigInt.html" title="struct num::bigint::BigInt">BigInt</a>&gt;</code><a class='srclink' href='../../../src/num_bigint/bigint.rs.html#1107-1109' title='goto source code'>[src]</a></h4><h4 id='method.from_u64-15' class="method hidden"><code id='from_u64.v-16'>fn <a href='#method.from_u64-15' class='fnname'>from_u64</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u64.html">u64</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../../../num/bigint/struct.BigInt.html" title="struct num::bigint::BigInt">BigInt</a>&gt;</code><a class='srclink' href='../../../src/num_bigint/bigint.rs.html#1112-1114' title='goto source code'>[src]</a></h4><h4 id='method.from_f64-16' class="method hidden"><code id='from_f64.v-16'>fn <a href='#method.from_f64-16' class='fnname'>from_f64</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f64.html">f64</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../../../num/bigint/struct.BigInt.html" title="struct num::bigint::BigInt">BigInt</a>&gt;</code><a class='srclink' href='../../../src/num_bigint/bigint.rs.html#1117-1123' title='goto source code'>[src]</a></h4></div><h3 id='impl-FromPrimitive-1' class='impl'><code class='in-band'>impl FromPrimitive for <a class="struct" href="../../../num/bigint/struct.BigUint.html" title="struct num::bigint::BigUint">BigUint</a></code><a href='#impl-FromPrimitive-1' class='anchor'></a><a class='srclink' href='../../../src/num_bigint/biguint.rs.html#1106-1150' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.from_i64-16' class="method hidden"><code id='from_i64.v-17'>fn <a href='#method.from_i64-16' class='fnname'>from_i64</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i64.html">i64</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../../../num/bigint/struct.BigUint.html" title="struct num::bigint::BigUint">BigUint</a>&gt;</code><a class='srclink' href='../../../src/num_bigint/biguint.rs.html#1108-1114' title='goto source code'>[src]</a></h4><h4 id='method.from_u64-16' class="method hidden"><code id='from_u64.v-17'>fn <a href='#method.from_u64-16' class='fnname'>from_u64</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u64.html">u64</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../../../num/bigint/struct.BigUint.html" title="struct num::bigint::BigUint">BigUint</a>&gt;</code><a class='srclink' href='../../../src/num_bigint/biguint.rs.html#1117-1119' title='goto source code'>[src]</a></h4><h4 id='method.from_f64-17' class="method hidden"><code id='from_f64.v-17'>fn <a href='#method.from_f64-17' class='fnname'>from_f64</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f64.html">f64</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../../../num/bigint/struct.BigUint.html" title="struct num::bigint::BigUint">BigUint</a>&gt;</code><a class='srclink' href='../../../src/num_bigint/biguint.rs.html#1122-1149' title='goto source code'>[src]</a></h4></div><h3 id='impl-FromPrimitive-2' class='impl'><code class='in-band'>impl FromPrimitive for <a class="struct" href="../../../num/rational/struct.Ratio.html" title="struct num::rational::Ratio">Ratio</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i16.html">i16</a>&gt;</code><a href='#impl-FromPrimitive-2' class='anchor'></a><a class='srclink' href='../../../src/num_rational/lib.rs.html#933-949' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.from_i64-17' class="method hidden"><code id='from_i64.v-18'>fn <a href='#method.from_i64-17' class='fnname'>from_i64</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i64.html">i64</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../../../num/rational/struct.Ratio.html" title="struct num::rational::Ratio">Ratio</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i16.html">i16</a>&gt;&gt;</code><a class='srclink' href='../../../src/num_rational/lib.rs.html#934-936' title='goto source code'>[src]</a></h4><h4 id='method.from_u64-17' class="method hidden"><code id='from_u64.v-18'>fn <a href='#method.from_u64-17' class='fnname'>from_u64</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u64.html">u64</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../../../num/rational/struct.Ratio.html" title="struct num::rational::Ratio">Ratio</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i16.html">i16</a>&gt;&gt;</code><a class='srclink' href='../../../src/num_rational/lib.rs.html#938-940' title='goto source code'>[src]</a></h4><h4 id='method.from_f32-16' class="method hidden"><code id='from_f32.v-16'>fn <a href='#method.from_f32-16' class='fnname'>from_f32</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f32.html">f32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../../../num/rational/struct.Ratio.html" title="struct num::rational::Ratio">Ratio</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i16.html">i16</a>&gt;&gt;</code><a class='srclink' href='../../../src/num_rational/lib.rs.html#942-944' title='goto source code'>[src]</a></h4><h4 id='method.from_f64-18' class="method hidden"><code id='from_f64.v-18'>fn <a href='#method.from_f64-18' class='fnname'>from_f64</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f64.html">f64</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../../../num/rational/struct.Ratio.html" title="struct num::rational::Ratio">Ratio</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i16.html">i16</a>&gt;&gt;</code><a class='srclink' href='../../../src/num_rational/lib.rs.html#946-948' title='goto source code'>[src]</a></h4></div><h3 id='impl-FromPrimitive-3' class='impl'><code class='in-band'>impl FromPrimitive for <a class="struct" href="../../../num/rational/struct.Ratio.html" title="struct num::rational::Ratio">Ratio</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i32.html">i32</a>&gt;</code><a href='#impl-FromPrimitive-3' class='anchor'></a><a class='srclink' href='../../../src/num_rational/lib.rs.html#933-949' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.from_i64-18' class="method hidden"><code id='from_i64.v-19'>fn <a href='#method.from_i64-18' class='fnname'>from_i64</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i64.html">i64</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../../../num/rational/struct.Ratio.html" title="struct num::rational::Ratio">Ratio</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i32.html">i32</a>&gt;&gt;</code><a class='srclink' href='../../../src/num_rational/lib.rs.html#934-936' title='goto source code'>[src]</a></h4><h4 id='method.from_u64-18' class="method hidden"><code id='from_u64.v-19'>fn <a href='#method.from_u64-18' class='fnname'>from_u64</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u64.html">u64</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../../../num/rational/struct.Ratio.html" title="struct num::rational::Ratio">Ratio</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i32.html">i32</a>&gt;&gt;</code><a class='srclink' href='../../../src/num_rational/lib.rs.html#938-940' title='goto source code'>[src]</a></h4><h4 id='method.from_f32-17' class="method hidden"><code id='from_f32.v-17'>fn <a href='#method.from_f32-17' class='fnname'>from_f32</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f32.html">f32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../../../num/rational/struct.Ratio.html" title="struct num::rational::Ratio">Ratio</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i32.html">i32</a>&gt;&gt;</code><a class='srclink' href='../../../src/num_rational/lib.rs.html#942-944' title='goto source code'>[src]</a></h4><h4 id='method.from_f64-19' class="method hidden"><code id='from_f64.v-19'>fn <a href='#method.from_f64-19' class='fnname'>from_f64</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f64.html">f64</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../../../num/rational/struct.Ratio.html" title="struct num::rational::Ratio">Ratio</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i32.html">i32</a>&gt;&gt;</code><a class='srclink' href='../../../src/num_rational/lib.rs.html#946-948' title='goto source code'>[src]</a></h4></div><h3 id='impl-FromPrimitive-4' class='impl'><code class='in-band'>impl FromPrimitive for <a class="struct" href="../../../num/rational/struct.Ratio.html" title="struct num::rational::Ratio">Ratio</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i64.html">i64</a>&gt;</code><a href='#impl-FromPrimitive-4' class='anchor'></a><a class='srclink' href='../../../src/num_rational/lib.rs.html#933-949' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.from_i64-19' class="method hidden"><code id='from_i64.v-20'>fn <a href='#method.from_i64-19' class='fnname'>from_i64</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i64.html">i64</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../../../num/rational/struct.Ratio.html" title="struct num::rational::Ratio">Ratio</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i64.html">i64</a>&gt;&gt;</code><a class='srclink' href='../../../src/num_rational/lib.rs.html#934-936' title='goto source code'>[src]</a></h4><h4 id='method.from_u64-19' class="method hidden"><code id='from_u64.v-20'>fn <a href='#method.from_u64-19' class='fnname'>from_u64</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u64.html">u64</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../../../num/rational/struct.Ratio.html" title="struct num::rational::Ratio">Ratio</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i64.html">i64</a>&gt;&gt;</code><a class='srclink' href='../../../src/num_rational/lib.rs.html#938-940' title='goto source code'>[src]</a></h4><h4 id='method.from_f32-18' class="method hidden"><code id='from_f32.v-18'>fn <a href='#method.from_f32-18' class='fnname'>from_f32</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f32.html">f32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../../../num/rational/struct.Ratio.html" title="struct num::rational::Ratio">Ratio</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i64.html">i64</a>&gt;&gt;</code><a class='srclink' href='../../../src/num_rational/lib.rs.html#942-944' title='goto source code'>[src]</a></h4><h4 id='method.from_f64-20' class="method hidden"><code id='from_f64.v-20'>fn <a href='#method.from_f64-20' class='fnname'>from_f64</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f64.html">f64</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../../../num/rational/struct.Ratio.html" title="struct num::rational::Ratio">Ratio</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i64.html">i64</a>&gt;&gt;</code><a class='srclink' href='../../../src/num_rational/lib.rs.html#946-948' title='goto source code'>[src]</a></h4></div><h3 id='impl-FromPrimitive-5' class='impl'><code class='in-band'>impl FromPrimitive for <a class="struct" href="../../../num/rational/struct.Ratio.html" title="struct num::rational::Ratio">Ratio</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i8.html">i8</a>&gt;</code><a href='#impl-FromPrimitive-5' class='anchor'></a><a class='srclink' href='../../../src/num_rational/lib.rs.html#933-949' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.from_i64-20' class="method hidden"><code id='from_i64.v-21'>fn <a href='#method.from_i64-20' class='fnname'>from_i64</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i64.html">i64</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../../../num/rational/struct.Ratio.html" title="struct num::rational::Ratio">Ratio</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i8.html">i8</a>&gt;&gt;</code><a class='srclink' href='../../../src/num_rational/lib.rs.html#934-936' title='goto source code'>[src]</a></h4><h4 id='method.from_u64-20' class="method hidden"><code id='from_u64.v-21'>fn <a href='#method.from_u64-20' class='fnname'>from_u64</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u64.html">u64</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../../../num/rational/struct.Ratio.html" title="struct num::rational::Ratio">Ratio</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i8.html">i8</a>&gt;&gt;</code><a class='srclink' href='../../../src/num_rational/lib.rs.html#938-940' title='goto source code'>[src]</a></h4><h4 id='method.from_f32-19' class="method hidden"><code id='from_f32.v-19'>fn <a href='#method.from_f32-19' class='fnname'>from_f32</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f32.html">f32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../../../num/rational/struct.Ratio.html" title="struct num::rational::Ratio">Ratio</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i8.html">i8</a>&gt;&gt;</code><a class='srclink' href='../../../src/num_rational/lib.rs.html#942-944' title='goto source code'>[src]</a></h4><h4 id='method.from_f64-21' class="method hidden"><code id='from_f64.v-21'>fn <a href='#method.from_f64-21' class='fnname'>from_f64</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f64.html">f64</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../../../num/rational/struct.Ratio.html" title="struct num::rational::Ratio">Ratio</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i8.html">i8</a>&gt;&gt;</code><a class='srclink' href='../../../src/num_rational/lib.rs.html#946-948' title='goto source code'>[src]</a></h4></div><h3 id='impl-FromPrimitive-6' class='impl'><code class='in-band'>impl FromPrimitive for <a class="struct" href="../../../num/rational/struct.Ratio.html" title="struct num::rational::Ratio">Ratio</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.isize.html">isize</a>&gt;</code><a href='#impl-FromPrimitive-6' class='anchor'></a><a class='srclink' href='../../../src/num_rational/lib.rs.html#933-949' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.from_i64-21' class="method hidden"><code id='from_i64.v-22'>fn <a href='#method.from_i64-21' class='fnname'>from_i64</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i64.html">i64</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../../../num/rational/struct.Ratio.html" title="struct num::rational::Ratio">Ratio</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.isize.html">isize</a>&gt;&gt;</code><a class='srclink' href='../../../src/num_rational/lib.rs.html#934-936' title='goto source code'>[src]</a></h4><h4 id='method.from_u64-21' class="method hidden"><code id='from_u64.v-22'>fn <a href='#method.from_u64-21' class='fnname'>from_u64</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u64.html">u64</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../../../num/rational/struct.Ratio.html" title="struct num::rational::Ratio">Ratio</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.isize.html">isize</a>&gt;&gt;</code><a class='srclink' href='../../../src/num_rational/lib.rs.html#938-940' title='goto source code'>[src]</a></h4><h4 id='method.from_f32-20' class="method hidden"><code id='from_f32.v-20'>fn <a href='#method.from_f32-20' class='fnname'>from_f32</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f32.html">f32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../../../num/rational/struct.Ratio.html" title="struct num::rational::Ratio">Ratio</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.isize.html">isize</a>&gt;&gt;</code><a class='srclink' href='../../../src/num_rational/lib.rs.html#942-944' title='goto source code'>[src]</a></h4><h4 id='method.from_f64-22' class="method hidden"><code id='from_f64.v-22'>fn <a href='#method.from_f64-22' class='fnname'>from_f64</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f64.html">f64</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../../../num/rational/struct.Ratio.html" title="struct num::rational::Ratio">Ratio</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.isize.html">isize</a>&gt;&gt;</code><a class='srclink' href='../../../src/num_rational/lib.rs.html#946-948' title='goto source code'>[src]</a></h4></div><h3 id='impl-FromPrimitive-7' class='impl'><code class='in-band'>impl FromPrimitive for <a class="struct" href="../../../num/rational/struct.Ratio.html" title="struct num::rational::Ratio">Ratio</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u16.html">u16</a>&gt;</code><a href='#impl-FromPrimitive-7' class='anchor'></a><a class='srclink' href='../../../src/num_rational/lib.rs.html#933-949' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.from_i64-22' class="method hidden"><code id='from_i64.v-23'>fn <a href='#method.from_i64-22' class='fnname'>from_i64</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i64.html">i64</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../../../num/rational/struct.Ratio.html" title="struct num::rational::Ratio">Ratio</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u16.html">u16</a>&gt;&gt;</code><a class='srclink' href='../../../src/num_rational/lib.rs.html#934-936' title='goto source code'>[src]</a></h4><h4 id='method.from_u64-22' class="method hidden"><code id='from_u64.v-23'>fn <a href='#method.from_u64-22' class='fnname'>from_u64</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u64.html">u64</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../../../num/rational/struct.Ratio.html" title="struct num::rational::Ratio">Ratio</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u16.html">u16</a>&gt;&gt;</code><a class='srclink' href='../../../src/num_rational/lib.rs.html#938-940' title='goto source code'>[src]</a></h4><h4 id='method.from_f32-21' class="method hidden"><code id='from_f32.v-21'>fn <a href='#method.from_f32-21' class='fnname'>from_f32</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f32.html">f32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../../../num/rational/struct.Ratio.html" title="struct num::rational::Ratio">Ratio</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u16.html">u16</a>&gt;&gt;</code><a class='srclink' href='../../../src/num_rational/lib.rs.html#942-944' title='goto source code'>[src]</a></h4><h4 id='method.from_f64-23' class="method hidden"><code id='from_f64.v-23'>fn <a href='#method.from_f64-23' class='fnname'>from_f64</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f64.html">f64</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../../../num/rational/struct.Ratio.html" title="struct num::rational::Ratio">Ratio</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u16.html">u16</a>&gt;&gt;</code><a class='srclink' href='../../../src/num_rational/lib.rs.html#946-948' title='goto source code'>[src]</a></h4></div><h3 id='impl-FromPrimitive-8' class='impl'><code class='in-band'>impl FromPrimitive for <a class="struct" href="../../../num/rational/struct.Ratio.html" title="struct num::rational::Ratio">Ratio</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>&gt;</code><a href='#impl-FromPrimitive-8' class='anchor'></a><a class='srclink' href='../../../src/num_rational/lib.rs.html#933-949' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.from_i64-23' class="method hidden"><code id='from_i64.v-24'>fn <a href='#method.from_i64-23' class='fnname'>from_i64</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i64.html">i64</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../../../num/rational/struct.Ratio.html" title="struct num::rational::Ratio">Ratio</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>&gt;&gt;</code><a class='srclink' href='../../../src/num_rational/lib.rs.html#934-936' title='goto source code'>[src]</a></h4><h4 id='method.from_u64-23' class="method hidden"><code id='from_u64.v-24'>fn <a href='#method.from_u64-23' class='fnname'>from_u64</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u64.html">u64</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../../../num/rational/struct.Ratio.html" title="struct num::rational::Ratio">Ratio</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>&gt;&gt;</code><a class='srclink' href='../../../src/num_rational/lib.rs.html#938-940' title='goto source code'>[src]</a></h4><h4 id='method.from_f32-22' class="method hidden"><code id='from_f32.v-22'>fn <a href='#method.from_f32-22' class='fnname'>from_f32</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f32.html">f32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../../../num/rational/struct.Ratio.html" title="struct num::rational::Ratio">Ratio</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>&gt;&gt;</code><a class='srclink' href='../../../src/num_rational/lib.rs.html#942-944' title='goto source code'>[src]</a></h4><h4 id='method.from_f64-24' class="method hidden"><code id='from_f64.v-24'>fn <a href='#method.from_f64-24' class='fnname'>from_f64</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f64.html">f64</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../../../num/rational/struct.Ratio.html" title="struct num::rational::Ratio">Ratio</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a>&gt;&gt;</code><a class='srclink' href='../../../src/num_rational/lib.rs.html#946-948' title='goto source code'>[src]</a></h4></div><h3 id='impl-FromPrimitive-9' class='impl'><code class='in-band'>impl FromPrimitive for <a class="struct" href="../../../num/rational/struct.Ratio.html" title="struct num::rational::Ratio">Ratio</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u64.html">u64</a>&gt;</code><a href='#impl-FromPrimitive-9' class='anchor'></a><a class='srclink' href='../../../src/num_rational/lib.rs.html#933-949' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.from_i64-24' class="method hidden"><code id='from_i64.v-25'>fn <a href='#method.from_i64-24' class='fnname'>from_i64</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i64.html">i64</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../../../num/rational/struct.Ratio.html" title="struct num::rational::Ratio">Ratio</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u64.html">u64</a>&gt;&gt;</code><a class='srclink' href='../../../src/num_rational/lib.rs.html#934-936' title='goto source code'>[src]</a></h4><h4 id='method.from_u64-24' class="method hidden"><code id='from_u64.v-25'>fn <a href='#method.from_u64-24' class='fnname'>from_u64</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u64.html">u64</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../../../num/rational/struct.Ratio.html" title="struct num::rational::Ratio">Ratio</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u64.html">u64</a>&gt;&gt;</code><a class='srclink' href='../../../src/num_rational/lib.rs.html#938-940' title='goto source code'>[src]</a></h4><h4 id='method.from_f32-23' class="method hidden"><code id='from_f32.v-23'>fn <a href='#method.from_f32-23' class='fnname'>from_f32</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f32.html">f32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../../../num/rational/struct.Ratio.html" title="struct num::rational::Ratio">Ratio</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u64.html">u64</a>&gt;&gt;</code><a class='srclink' href='../../../src/num_rational/lib.rs.html#942-944' title='goto source code'>[src]</a></h4><h4 id='method.from_f64-25' class="method hidden"><code id='from_f64.v-25'>fn <a href='#method.from_f64-25' class='fnname'>from_f64</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f64.html">f64</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../../../num/rational/struct.Ratio.html" title="struct num::rational::Ratio">Ratio</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u64.html">u64</a>&gt;&gt;</code><a class='srclink' href='../../../src/num_rational/lib.rs.html#946-948' title='goto source code'>[src]</a></h4></div><h3 id='impl-FromPrimitive-10' class='impl'><code class='in-band'>impl FromPrimitive for <a class="struct" href="../../../num/rational/struct.Ratio.html" title="struct num::rational::Ratio">Ratio</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a>&gt;</code><a href='#impl-FromPrimitive-10' class='anchor'></a><a class='srclink' href='../../../src/num_rational/lib.rs.html#933-949' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.from_i64-25' class="method hidden"><code id='from_i64.v-26'>fn <a href='#method.from_i64-25' class='fnname'>from_i64</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i64.html">i64</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../../../num/rational/struct.Ratio.html" title="struct num::rational::Ratio">Ratio</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a>&gt;&gt;</code><a class='srclink' href='../../../src/num_rational/lib.rs.html#934-936' title='goto source code'>[src]</a></h4><h4 id='method.from_u64-25' class="method hidden"><code id='from_u64.v-26'>fn <a href='#method.from_u64-25' class='fnname'>from_u64</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u64.html">u64</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../../../num/rational/struct.Ratio.html" title="struct num::rational::Ratio">Ratio</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a>&gt;&gt;</code><a class='srclink' href='../../../src/num_rational/lib.rs.html#938-940' title='goto source code'>[src]</a></h4><h4 id='method.from_f32-24' class="method hidden"><code id='from_f32.v-24'>fn <a href='#method.from_f32-24' class='fnname'>from_f32</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f32.html">f32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../../../num/rational/struct.Ratio.html" title="struct num::rational::Ratio">Ratio</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a>&gt;&gt;</code><a class='srclink' href='../../../src/num_rational/lib.rs.html#942-944' title='goto source code'>[src]</a></h4><h4 id='method.from_f64-26' class="method hidden"><code id='from_f64.v-26'>fn <a href='#method.from_f64-26' class='fnname'>from_f64</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f64.html">f64</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../../../num/rational/struct.Ratio.html" title="struct num::rational::Ratio">Ratio</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a>&gt;&gt;</code><a class='srclink' href='../../../src/num_rational/lib.rs.html#946-948' title='goto source code'>[src]</a></h4></div><h3 id='impl-FromPrimitive-11' class='impl'><code class='in-band'>impl FromPrimitive for <a class="struct" href="../../../num/rational/struct.Ratio.html" title="struct num::rational::Ratio">Ratio</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>&gt;</code><a href='#impl-FromPrimitive-11' class='anchor'></a><a class='srclink' href='../../../src/num_rational/lib.rs.html#933-949' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.from_i64-26' class="method hidden"><code id='from_i64.v-27'>fn <a href='#method.from_i64-26' class='fnname'>from_i64</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i64.html">i64</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../../../num/rational/struct.Ratio.html" title="struct num::rational::Ratio">Ratio</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>&gt;&gt;</code><a class='srclink' href='../../../src/num_rational/lib.rs.html#934-936' title='goto source code'>[src]</a></h4><h4 id='method.from_u64-26' class="method hidden"><code id='from_u64.v-27'>fn <a href='#method.from_u64-26' class='fnname'>from_u64</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u64.html">u64</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../../../num/rational/struct.Ratio.html" title="struct num::rational::Ratio">Ratio</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>&gt;&gt;</code><a class='srclink' href='../../../src/num_rational/lib.rs.html#938-940' title='goto source code'>[src]</a></h4><h4 id='method.from_f32-25' class="method hidden"><code id='from_f32.v-25'>fn <a href='#method.from_f32-25' class='fnname'>from_f32</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f32.html">f32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../../../num/rational/struct.Ratio.html" title="struct num::rational::Ratio">Ratio</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>&gt;&gt;</code><a class='srclink' href='../../../src/num_rational/lib.rs.html#942-944' title='goto source code'>[src]</a></h4><h4 id='method.from_f64-27' class="method hidden"><code id='from_f64.v-27'>fn <a href='#method.from_f64-27' class='fnname'>from_f64</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f64.html">f64</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../../../num/rational/struct.Ratio.html" title="struct num::rational::Ratio">Ratio</a>&lt;<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>&gt;&gt;</code><a class='srclink' href='../../../src/num_rational/lib.rs.html#946-948' title='goto source code'>[src]</a></h4></div><h3 id='impl-FromPrimitive-12' class='impl'><code class='in-band'>impl FromPrimitive for <a class="struct" href="../../../num/rational/struct.Ratio.html" title="struct num::rational::Ratio">Ratio</a>&lt;<a class="struct" href="../../../num/bigint/struct.BigInt.html" title="struct num::bigint::BigInt">BigInt</a>&gt;</code><a href='#impl-FromPrimitive-12' class='anchor'></a><a class='srclink' href='../../../src/num_rational/lib.rs.html#913-929' title='goto source code'>[src]</a></h3><div class='impl-items'><h4 id='method.from_i64-27' class="method hidden"><code id='from_i64.v-28'>fn <a href='#method.from_i64-27' class='fnname'>from_i64</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i64.html">i64</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../../../num/rational/struct.Ratio.html" title="struct num::rational::Ratio">Ratio</a>&lt;<a class="struct" href="../../../num/bigint/struct.BigInt.html" title="struct num::bigint::BigInt">BigInt</a>&gt;&gt;</code><a class='srclink' href='../../../src/num_rational/lib.rs.html#914-916' title='goto source code'>[src]</a></h4><h4 id='method.from_u64-27' class="method hidden"><code id='from_u64.v-28'>fn <a href='#method.from_u64-27' class='fnname'>from_u64</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u64.html">u64</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../../../num/rational/struct.Ratio.html" title="struct num::rational::Ratio">Ratio</a>&lt;<a class="struct" href="../../../num/bigint/struct.BigInt.html" title="struct num::bigint::BigInt">BigInt</a>&gt;&gt;</code><a class='srclink' href='../../../src/num_rational/lib.rs.html#918-920' title='goto source code'>[src]</a></h4><h4 id='method.from_f32-26' class="method hidden"><code id='from_f32.v-26'>fn <a href='#method.from_f32-26' class='fnname'>from_f32</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f32.html">f32</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../../../num/rational/struct.Ratio.html" title="struct num::rational::Ratio">Ratio</a>&lt;<a class="struct" href="../../../num/bigint/struct.BigInt.html" title="struct num::bigint::BigInt">BigInt</a>&gt;&gt;</code><a class='srclink' href='../../../src/num_rational/lib.rs.html#922-924' title='goto source code'>[src]</a></h4><h4 id='method.from_f64-28' class="method hidden"><code id='from_f64.v-28'>fn <a href='#method.from_f64-28' class='fnname'>from_f64</a>(n: <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f64.html">f64</a>) -&gt; <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a>&lt;<a class="struct" href="../../../num/rational/struct.Ratio.html" title="struct num::rational::Ratio">Ratio</a>&lt;<a class="struct" href="../../../num/bigint/struct.BigInt.html" title="struct num::bigint::BigInt">BigInt</a>&gt;&gt;</code><a class='srclink' href='../../../src/num_rational/lib.rs.html#926-928' title='goto source code'>[src]</a></h4></div></div><span class='loading-content'>Loading content...</span><script type="text/javascript">window.inlined_types=new Set([]);</script><script type="text/javascript" async
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