| <!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="A generic trait for converting a value to a `BigInt`. This may return `None` when converting from `f32` or `f64`, and will always succeed when converting from any integer or unsigned primitive, or `BigUint`."><meta name="keywords" content="rust, rustlang, rust-lang, ToBigInt"><title>ToBigInt in num_bigint - Rust</title><link rel="preload" as="font" type="font/woff2" crossorigin href="../SourceSerif4-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../FiraSans-Regular.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../FiraSans-Medium.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../SourceCodePro-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../SourceSerif4-Bold.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../SourceCodePro-Semibold.ttf.woff2"><link rel="stylesheet" href="../normalize.css"><link rel="stylesheet" href="../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" href="../ayu.css" disabled><link rel="stylesheet" href="../dark.css" disabled><link rel="stylesheet" href="../light.css" id="themeStyle"><script id="default-settings" ></script><script src="../storage.js"></script><script defer src="sidebar-items.js"></script><script defer src="../main.js"></script><noscript><link rel="stylesheet" href="../noscript.css"></noscript><link rel="alternate icon" type="image/png" href="../favicon-16x16.png"><link rel="alternate icon" type="image/png" href="../favicon-32x32.png"><link rel="icon" type="image/svg+xml" href="../favicon.svg"></head><body class="rustdoc trait"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="mobile-topbar"><button class="sidebar-menu-toggle">☰</button><a class="sidebar-logo" href="../num_bigint/index.html"><div class="logo-container"><img class="rust-logo" src="../rust-logo.svg" alt="logo"></div></a><h2></h2></nav><nav class="sidebar"><a class="sidebar-logo" href="../num_bigint/index.html"><div class="logo-container"><img class="rust-logo" src="../rust-logo.svg" alt="logo"></div></a><h2 class="location"><a href="#">ToBigInt</a></h2><div class="sidebar-elems"><section><h3><a href="#required-methods">Required Methods</a></h3><ul class="block"><li><a href="#tymethod.to_bigint">to_bigint</a></li></ul><h3><a href="#foreign-impls">Implementations on Foreign Types</a></h3><ul class="block"><li><a href="#impl-ToBigInt-for-f32">f32</a></li><li><a href="#impl-ToBigInt-for-f64">f64</a></li><li><a href="#impl-ToBigInt-for-i128">i128</a></li><li><a href="#impl-ToBigInt-for-i16">i16</a></li><li><a href="#impl-ToBigInt-for-i32">i32</a></li><li><a href="#impl-ToBigInt-for-i64">i64</a></li><li><a href="#impl-ToBigInt-for-i8">i8</a></li><li><a href="#impl-ToBigInt-for-isize">isize</a></li><li><a href="#impl-ToBigInt-for-u128">u128</a></li><li><a href="#impl-ToBigInt-for-u16">u16</a></li><li><a href="#impl-ToBigInt-for-u32">u32</a></li><li><a href="#impl-ToBigInt-for-u64">u64</a></li><li><a href="#impl-ToBigInt-for-u8">u8</a></li><li><a href="#impl-ToBigInt-for-usize">usize</a></li></ul><h3><a href="#implementors">Implementors</a></h3></section><h2><a href="index.html">In num_bigint</a></h2></div></nav><main><div class="width-limiter"><nav class="sub"><form class="search-form"><div class="search-container"><span></span><input class="search-input" name="search" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"><div id="help-button" title="help" tabindex="-1"><a href="../help.html">?</a></div><div id="settings-menu" tabindex="-1"><a href="../settings.html" title="settings"><img width="22" height="22" alt="Change settings" src="../wheel.svg"></a></div></div></form></nav><section id="main-content" class="content"><div class="main-heading"><h1 class="fqn">Trait <a href="index.html">num_bigint</a>::<wbr><a class="trait" href="#">ToBigInt</a><button id="copy-path" onclick="copy_path(this)" title="Copy item path to clipboard"><img src="../clipboard.svg" width="19" height="18" alt="Copy item path"></button></h1><span class="out-of-band"><a class="srclink" href="../src/num_bigint/bigint.rs.html#559-562">source</a> · <a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">[<span class="inner">−</span>]</a></span></div><div class="item-decl"><pre class="rust trait"><code>pub trait ToBigInt { |
| fn <a href="#tymethod.to_bigint" class="fnname">to_bigint</a>(&self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="struct" href="struct.BigInt.html" title="struct num_bigint::BigInt">BigInt</a>>; |
| }</code></pre></div><details class="rustdoc-toggle top-doc" open><summary class="hideme"><span>Expand description</span></summary><div class="docblock"><p>A generic trait for converting a value to a <code>BigInt</code>. This may return |
| <code>None</code> when converting from <code>f32</code> or <code>f64</code>, and will always succeed |
| when converting from any integer or unsigned primitive, or <code>BigUint</code>.</p> |
| </div></details><h2 id="required-methods" class="small-section-header">Required Methods<a href="#required-methods" class="anchor"></a></h2><div class="methods"><details class="rustdoc-toggle method-toggle" open><summary><section id="tymethod.to_bigint" class="method has-srclink"><a class="srclink rightside" href="../src/num_bigint/bigint.rs.html#561">source</a><h4 class="code-header">fn <a href="#tymethod.to_bigint" class="fnname">to_bigint</a>(&self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="struct" href="struct.BigInt.html" title="struct num_bigint::BigInt">BigInt</a>></h4></section></summary><div class="docblock"><p>Converts the value of <code>self</code> to a <code>BigInt</code>.</p> |
| </div></details></div><h2 id="foreign-impls" class="small-section-header">Implementations on Foreign Types<a href="#foreign-impls" class="anchor"></a></h2><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-ToBigInt-for-isize" class="impl has-srclink"><a class="srclink rightside" href="../src/num_bigint/bigint/convert.rs.html#353">source</a><a href="#impl-ToBigInt-for-isize" class="anchor"></a><h3 class="code-header">impl <a class="trait" href="trait.ToBigInt.html" title="trait num_bigint::ToBigInt">ToBigInt</a> for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.isize.html">isize</a></h3></section></summary><div class="impl-items"><section id="method.to_bigint" class="method trait-impl has-srclink"><a class="srclink rightside" href="../src/num_bigint/bigint/convert.rs.html#353">source</a><a href="#method.to_bigint" class="anchor"></a><h4 class="code-header">fn <a href="#tymethod.to_bigint" class="fnname">to_bigint</a>(&self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="struct" href="struct.BigInt.html" title="struct num_bigint::BigInt">BigInt</a>></h4></section></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-ToBigInt-for-i8" class="impl has-srclink"><a class="srclink rightside" href="../src/num_bigint/bigint/convert.rs.html#354">source</a><a href="#impl-ToBigInt-for-i8" class="anchor"></a><h3 class="code-header">impl <a class="trait" href="trait.ToBigInt.html" title="trait num_bigint::ToBigInt">ToBigInt</a> for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i8.html">i8</a></h3></section></summary><div class="impl-items"><section id="method.to_bigint-1" class="method trait-impl has-srclink"><a class="srclink rightside" href="../src/num_bigint/bigint/convert.rs.html#354">source</a><a href="#method.to_bigint-1" class="anchor"></a><h4 class="code-header">fn <a href="#tymethod.to_bigint" class="fnname">to_bigint</a>(&self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="struct" href="struct.BigInt.html" title="struct num_bigint::BigInt">BigInt</a>></h4></section></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-ToBigInt-for-i16" class="impl has-srclink"><a class="srclink rightside" href="../src/num_bigint/bigint/convert.rs.html#355">source</a><a href="#impl-ToBigInt-for-i16" class="anchor"></a><h3 class="code-header">impl <a class="trait" href="trait.ToBigInt.html" title="trait num_bigint::ToBigInt">ToBigInt</a> for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i16.html">i16</a></h3></section></summary><div class="impl-items"><section id="method.to_bigint-2" class="method trait-impl has-srclink"><a class="srclink rightside" href="../src/num_bigint/bigint/convert.rs.html#355">source</a><a href="#method.to_bigint-2" class="anchor"></a><h4 class="code-header">fn <a href="#tymethod.to_bigint" class="fnname">to_bigint</a>(&self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="struct" href="struct.BigInt.html" title="struct num_bigint::BigInt">BigInt</a>></h4></section></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-ToBigInt-for-i32" class="impl has-srclink"><a class="srclink rightside" href="../src/num_bigint/bigint/convert.rs.html#356">source</a><a href="#impl-ToBigInt-for-i32" class="anchor"></a><h3 class="code-header">impl <a class="trait" href="trait.ToBigInt.html" title="trait num_bigint::ToBigInt">ToBigInt</a> for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i32.html">i32</a></h3></section></summary><div class="impl-items"><section id="method.to_bigint-3" class="method trait-impl has-srclink"><a class="srclink rightside" href="../src/num_bigint/bigint/convert.rs.html#356">source</a><a href="#method.to_bigint-3" class="anchor"></a><h4 class="code-header">fn <a href="#tymethod.to_bigint" class="fnname">to_bigint</a>(&self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="struct" href="struct.BigInt.html" title="struct num_bigint::BigInt">BigInt</a>></h4></section></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-ToBigInt-for-i64" class="impl has-srclink"><a class="srclink rightside" href="../src/num_bigint/bigint/convert.rs.html#357">source</a><a href="#impl-ToBigInt-for-i64" class="anchor"></a><h3 class="code-header">impl <a class="trait" href="trait.ToBigInt.html" title="trait num_bigint::ToBigInt">ToBigInt</a> for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i64.html">i64</a></h3></section></summary><div class="impl-items"><section id="method.to_bigint-4" class="method trait-impl has-srclink"><a class="srclink rightside" href="../src/num_bigint/bigint/convert.rs.html#357">source</a><a href="#method.to_bigint-4" class="anchor"></a><h4 class="code-header">fn <a href="#tymethod.to_bigint" class="fnname">to_bigint</a>(&self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="struct" href="struct.BigInt.html" title="struct num_bigint::BigInt">BigInt</a>></h4></section></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-ToBigInt-for-i128" class="impl has-srclink"><a class="srclink rightside" href="../src/num_bigint/bigint/convert.rs.html#358">source</a><a href="#impl-ToBigInt-for-i128" class="anchor"></a><h3 class="code-header">impl <a class="trait" href="trait.ToBigInt.html" title="trait num_bigint::ToBigInt">ToBigInt</a> for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.i128.html">i128</a></h3></section></summary><div class="impl-items"><section id="method.to_bigint-5" class="method trait-impl has-srclink"><a class="srclink rightside" href="../src/num_bigint/bigint/convert.rs.html#358">source</a><a href="#method.to_bigint-5" class="anchor"></a><h4 class="code-header">fn <a href="#tymethod.to_bigint" class="fnname">to_bigint</a>(&self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="struct" href="struct.BigInt.html" title="struct num_bigint::BigInt">BigInt</a>></h4></section></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-ToBigInt-for-usize" class="impl has-srclink"><a class="srclink rightside" href="../src/num_bigint/bigint/convert.rs.html#360">source</a><a href="#impl-ToBigInt-for-usize" class="anchor"></a><h3 class="code-header">impl <a class="trait" href="trait.ToBigInt.html" title="trait num_bigint::ToBigInt">ToBigInt</a> for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a></h3></section></summary><div class="impl-items"><section id="method.to_bigint-6" class="method trait-impl has-srclink"><a class="srclink rightside" href="../src/num_bigint/bigint/convert.rs.html#360">source</a><a href="#method.to_bigint-6" class="anchor"></a><h4 class="code-header">fn <a href="#tymethod.to_bigint" class="fnname">to_bigint</a>(&self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="struct" href="struct.BigInt.html" title="struct num_bigint::BigInt">BigInt</a>></h4></section></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-ToBigInt-for-u8" class="impl has-srclink"><a class="srclink rightside" href="../src/num_bigint/bigint/convert.rs.html#361">source</a><a href="#impl-ToBigInt-for-u8" class="anchor"></a><h3 class="code-header">impl <a class="trait" href="trait.ToBigInt.html" title="trait num_bigint::ToBigInt">ToBigInt</a> for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u8.html">u8</a></h3></section></summary><div class="impl-items"><section id="method.to_bigint-7" class="method trait-impl has-srclink"><a class="srclink rightside" href="../src/num_bigint/bigint/convert.rs.html#361">source</a><a href="#method.to_bigint-7" class="anchor"></a><h4 class="code-header">fn <a href="#tymethod.to_bigint" class="fnname">to_bigint</a>(&self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="struct" href="struct.BigInt.html" title="struct num_bigint::BigInt">BigInt</a>></h4></section></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-ToBigInt-for-u16" class="impl has-srclink"><a class="srclink rightside" href="../src/num_bigint/bigint/convert.rs.html#362">source</a><a href="#impl-ToBigInt-for-u16" class="anchor"></a><h3 class="code-header">impl <a class="trait" href="trait.ToBigInt.html" title="trait num_bigint::ToBigInt">ToBigInt</a> for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u16.html">u16</a></h3></section></summary><div class="impl-items"><section id="method.to_bigint-8" class="method trait-impl has-srclink"><a class="srclink rightside" href="../src/num_bigint/bigint/convert.rs.html#362">source</a><a href="#method.to_bigint-8" class="anchor"></a><h4 class="code-header">fn <a href="#tymethod.to_bigint" class="fnname">to_bigint</a>(&self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="struct" href="struct.BigInt.html" title="struct num_bigint::BigInt">BigInt</a>></h4></section></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-ToBigInt-for-u32" class="impl has-srclink"><a class="srclink rightside" href="../src/num_bigint/bigint/convert.rs.html#363">source</a><a href="#impl-ToBigInt-for-u32" class="anchor"></a><h3 class="code-header">impl <a class="trait" href="trait.ToBigInt.html" title="trait num_bigint::ToBigInt">ToBigInt</a> for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u32.html">u32</a></h3></section></summary><div class="impl-items"><section id="method.to_bigint-9" class="method trait-impl has-srclink"><a class="srclink rightside" href="../src/num_bigint/bigint/convert.rs.html#363">source</a><a href="#method.to_bigint-9" class="anchor"></a><h4 class="code-header">fn <a href="#tymethod.to_bigint" class="fnname">to_bigint</a>(&self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="struct" href="struct.BigInt.html" title="struct num_bigint::BigInt">BigInt</a>></h4></section></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-ToBigInt-for-u64" class="impl has-srclink"><a class="srclink rightside" href="../src/num_bigint/bigint/convert.rs.html#364">source</a><a href="#impl-ToBigInt-for-u64" class="anchor"></a><h3 class="code-header">impl <a class="trait" href="trait.ToBigInt.html" title="trait num_bigint::ToBigInt">ToBigInt</a> for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u64.html">u64</a></h3></section></summary><div class="impl-items"><section id="method.to_bigint-10" class="method trait-impl has-srclink"><a class="srclink rightside" href="../src/num_bigint/bigint/convert.rs.html#364">source</a><a href="#method.to_bigint-10" class="anchor"></a><h4 class="code-header">fn <a href="#tymethod.to_bigint" class="fnname">to_bigint</a>(&self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="struct" href="struct.BigInt.html" title="struct num_bigint::BigInt">BigInt</a>></h4></section></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-ToBigInt-for-u128" class="impl has-srclink"><a class="srclink rightside" href="../src/num_bigint/bigint/convert.rs.html#365">source</a><a href="#impl-ToBigInt-for-u128" class="anchor"></a><h3 class="code-header">impl <a class="trait" href="trait.ToBigInt.html" title="trait num_bigint::ToBigInt">ToBigInt</a> for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.u128.html">u128</a></h3></section></summary><div class="impl-items"><section id="method.to_bigint-11" class="method trait-impl has-srclink"><a class="srclink rightside" href="../src/num_bigint/bigint/convert.rs.html#365">source</a><a href="#method.to_bigint-11" class="anchor"></a><h4 class="code-header">fn <a href="#tymethod.to_bigint" class="fnname">to_bigint</a>(&self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="struct" href="struct.BigInt.html" title="struct num_bigint::BigInt">BigInt</a>></h4></section></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-ToBigInt-for-f32" class="impl has-srclink"><a class="srclink rightside" href="../src/num_bigint/bigint/convert.rs.html#367">source</a><a href="#impl-ToBigInt-for-f32" class="anchor"></a><h3 class="code-header">impl <a class="trait" href="trait.ToBigInt.html" title="trait num_bigint::ToBigInt">ToBigInt</a> for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f32.html">f32</a></h3></section></summary><div class="impl-items"><section id="method.to_bigint-12" class="method trait-impl has-srclink"><a class="srclink rightside" href="../src/num_bigint/bigint/convert.rs.html#367">source</a><a href="#method.to_bigint-12" class="anchor"></a><h4 class="code-header">fn <a href="#tymethod.to_bigint" class="fnname">to_bigint</a>(&self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="struct" href="struct.BigInt.html" title="struct num_bigint::BigInt">BigInt</a>></h4></section></div></details><details class="rustdoc-toggle implementors-toggle"><summary><section id="impl-ToBigInt-for-f64" class="impl has-srclink"><a class="srclink rightside" href="../src/num_bigint/bigint/convert.rs.html#368">source</a><a href="#impl-ToBigInt-for-f64" class="anchor"></a><h3 class="code-header">impl <a class="trait" href="trait.ToBigInt.html" title="trait num_bigint::ToBigInt">ToBigInt</a> for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.f64.html">f64</a></h3></section></summary><div class="impl-items"><section id="method.to_bigint-13" class="method trait-impl has-srclink"><a class="srclink rightside" href="../src/num_bigint/bigint/convert.rs.html#368">source</a><a href="#method.to_bigint-13" class="anchor"></a><h4 class="code-header">fn <a href="#tymethod.to_bigint" class="fnname">to_bigint</a>(&self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="struct" href="struct.BigInt.html" title="struct num_bigint::BigInt">BigInt</a>></h4></section></div></details><h2 id="implementors" class="small-section-header">Implementors<a href="#implementors" class="anchor"></a></h2><div id="implementors-list"><section id="impl-ToBigInt-for-BigInt" class="impl has-srclink"><a class="srclink rightside" href="../src/num_bigint/bigint/convert.rs.html#284-289">source</a><a href="#impl-ToBigInt-for-BigInt" class="anchor"></a><h3 class="code-header">impl <a class="trait" href="trait.ToBigInt.html" title="trait num_bigint::ToBigInt">ToBigInt</a> for <a class="struct" href="struct.BigInt.html" title="struct num_bigint::BigInt">BigInt</a></h3></section><section id="impl-ToBigInt-for-BigUint" class="impl has-srclink"><a class="srclink rightside" href="../src/num_bigint/bigint/convert.rs.html#291-303">source</a><a href="#impl-ToBigInt-for-BigUint" class="anchor"></a><h3 class="code-header">impl <a class="trait" href="trait.ToBigInt.html" title="trait num_bigint::ToBigInt">ToBigInt</a> for <a class="struct" href="struct.BigUint.html" title="struct num_bigint::BigUint">BigUint</a></h3></section></div><script src="../implementors/num_bigint/bigint/trait.ToBigInt.js" data-ignore-extern-crates="std" async></script></section></div></main><div id="rustdoc-vars" data-root-path="../" data-current-crate="num_bigint" data-themes="ayu,dark,light" data-resource-suffix="" 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