<!DOCTYPE html><htmllang="en"><head><metacharset="utf-8"><metaname="viewport"content="width=device-width, initial-scale=1.0"><metaname="generator"content="rustdoc"><metaname="description"content="Instructions that can be implemented for a curve whose base field fits into its scalar field."><metaname="keywords"content="rust, rustlang, rust-lang, BaseFitsInScalarInstructions"><title>BaseFitsInScalarInstructions in halo2_gadgets::ecc - Rust</title><linkrel="preload"as="font"type="font/woff2"crossoriginhref="../../SourceSerif4-Regular.ttf.woff2"><linkrel="preload"as="font"type="font/woff2"crossoriginhref="../../FiraSans-Regular.woff2"><linkrel="preload"as="font"type="font/woff2"crossoriginhref="../../FiraSans-Medium.woff2"><linkrel="preload"as="font"type="font/woff2"crossoriginhref="../../SourceCodePro-Regular.ttf.woff2"><linkrel="preload"as="font"type="font/woff2"crossoriginhref="../../SourceSerif4-Bold.ttf.woff2"><linkrel="preload"as="font"type="font/woff2"crossoriginhref="../../SourceCodePro-Semibold.ttf.woff2"><linkrel="stylesheet"href="../../normalize.css"><linkrel="stylesheet"href="../../rustdoc.css"id="mainThemeStyle"><linkrel="stylesheet"href="../../ayu.css"disabled><linkrel="stylesheet"href="../../dark.css"disabled><linkrel="stylesheet"href="../../light.css"id="themeStyle"><scriptid="default-settings"></script><scriptsrc="../../storage.js"></script><scriptdefersrc="sidebar-items.js"></script><scriptdefersrc="../../main.js"></script><noscript><linkrel="stylesheet"href="../../noscript.css"></noscript><linkrel="alternate icon"type="image/png"href="../../favicon-16x16.png"><linkrel="alternate icon"type="image/png"href="../../favicon-32x32.png"><linkrel="icon"type="image/svg+xml"href="../../favicon.svg"><linkrel="stylesheet"href="https://cdn.jsdelivr.net/npm/katex@0.10.0/dist/katex.min.css"integrity="sha384-9eLZqc9ds8eNjO3TmqPeYcDj8n+Qfa4nuSiGYa6DjLNcv9BtN69ZIulL9+8CqC9Y"crossorigin="anonymous">
</head><bodyclass="rustdoc trait"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><navclass="mobile-topbar"><buttonclass="sidebar-menu-toggle">☰</button><aclass="sidebar-logo"href="../../halo2_gadgets/index.html"><divclass="logo-container"><imgclass="rust-logo"src="../../rust-logo.svg"alt="logo"></div></a><h2class="location"></h2></nav><navclass="sidebar"><aclass="sidebar-logo"href="../../halo2_gadgets/index.html"><divclass="logo-container"><imgclass="rust-logo"src="../../rust-logo.svg"alt="logo"></div></a><h2class="location"><ahref="#">BaseFitsInScalarInstructions</a></h2><divclass="sidebar-elems"><section><h3><ahref="#required-methods">Required Methods</a></h3><ulclass="block"><li><ahref="#tymethod.scalar_var_from_base">scalar_var_from_base</a></li></ul><h3><ahref="#implementors">Implementors</a></h3></section><h2class="location"><ahref="index.html">In halo2_gadgets::ecc</a></h2></div></nav><main><divclass="width-limiter"><divclass="sub-container"><navclass="sub"><formclass="search-form"><divclass="search-container"><span></span><inputclass="search-input"name="search"autocomplete="off"spellcheck="false"placeholder="Click or press ‘S’ to search, ‘?’ for more options…"type="search"><divid="help-button"title="help"tabindex="-1"><ahref="../../help.html">?</a></div><divid="settings-menu"tabindex="-1"><ahref="../../settings.html"title="settings"><imgwidth="22"height="22"alt="Change settings"src="../../wheel.svg"></a></div></div></form></nav></div><sectionid="main-content"class="content"><divclass="main-heading"><h1class="fqn">Trait <ahref="../index.html">halo2_gadgets</a>::<wbr><ahref="index.html">ecc</a>::<wbr><aclass="trait"href="#">BaseFitsInScalarInstructions</a><buttonid="copy-path"onclick="copy_path(this)"title="Copy item path to clipboard"><imgsrc="../../clipboard.svg"width="19"height="18"alt="Copy item path"></button></h1><spanclass="out-of-band"><aclass="srclink"href="../../src/halo2_gadgets/ecc.rs.html#152-160">source</a> · <aid="toggle-all-docs"href="javascript:void(0)"title="collapse all docs">[<spanclass="inner">−</span>]</a></span></div><divclass="item-decl"><preclass="rust trait"><code>pub trait BaseFitsInScalarInstructions<C: CurveAffine>: <aclass="trait"href="trait.EccInstructions.html"title="trait halo2_gadgets::ecc::EccInstructions">EccInstructions</a><C> {
}</code></pre></div><detailsclass="rustdoc-toggle top-doc"open><summaryclass="hideme"><span>Expand description</span></summary><divclass="docblock"><p>Instructions that can be implemented for a curve whose base field fits into
</div></details><h2id="required-methods"class="small-section-header">Required Methods<ahref="#required-methods"class="anchor"></a></h2><divclass="methods"><detailsclass="rustdoc-toggle method-toggle"open><summary><sectionid="tymethod.scalar_var_from_base"class="method has-srclink"><aclass="srclink rightside"href="../../src/halo2_gadgets/ecc.rs.html#155-159">source</a><h4class="code-header">fn <ahref="#tymethod.scalar_var_from_base"class="fnname">scalar_var_from_base</a>(<br> &self,<br> layouter: &mut impl Layouter<C::Base>,<br> base: &Self::<aclass="associatedtype"href="../utilities/trait.UtilitiesInstructions.html#associatedtype.Var"title="type halo2_gadgets::utilities::UtilitiesInstructions::Var">Var</a><br>) -><aclass="enum"href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html"title="enum core::result::Result">Result</a><Self::<aclass="associatedtype"href="trait.EccInstructions.html#associatedtype.ScalarVar"title="type halo2_gadgets::ecc::EccInstructions::ScalarVar">ScalarVar</a>, Error></h4></section></summary><divclass="docblock"><p>Converts a base field element that exists as a variable in the circuit
