<!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="This is a trait that circuits provide implementations for so that the backend prover can ask the circuit to synthesize using some given [`ConstraintSystem`] implementation."><metaname="keywords"content="rust, rustlang, rust-lang, Circuit"><title>Circuit in halo2_proofs::plonk - 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"type="text/css"href="../../normalize.css"><linkrel="stylesheet"type="text/css"href="../../rustdoc.css"id="mainThemeStyle"><linkrel="stylesheet"type="text/css"href="../../ayu.css"disabled><linkrel="stylesheet"type="text/css"href="../../dark.css"disabled><linkrel="stylesheet"type="text/css"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">
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</a><h2class="location"><ahref="#">Circuit</a></h2><divclass="sidebar-elems"><section><divclass="block"><h3class="sidebar-title"><ahref="#required-associated-types">Required Associated Types</a></h3><ul><li><ahref="#associatedtype.Config">Config</a></li><li><ahref="#associatedtype.FloorPlanner">FloorPlanner</a></li></ul></div><divclass="block"><h3class="sidebar-title"><ahref="#required-methods">Required Methods</a></h3><ul><li><ahref="#tymethod.configure">configure</a></li><li><ahref="#tymethod.synthesize">synthesize</a></li><li><ahref="#tymethod.without_witnesses">without_witnesses</a></li></ul></div><divclass="block"><h3class="sidebar-title"><ahref="#implementors">Implementors</a></h3></div></section><h2class="location"><ahref="index.html">In halo2_proofs::plonk</a></h2></div></nav><main><divclass="width-limiter"><divclass="sub-container"><aclass="sub-logo-container"href="../../halo2_proofs/index.html"><imgclass="rust-logo"src="../../rust-logo.svg"alt="logo"></a><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"><buttontype="button">?</button></div><divid="settings-menu"tabindex="-1">
type <ahref="#associatedtype.Config"class="associatedtype">Config</a>: <aclass="trait"href="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html"title="trait core::clone::Clone">Clone</a>;
type <ahref="#associatedtype.FloorPlanner"class="associatedtype">FloorPlanner</a>: <aclass="trait"href="trait.FloorPlanner.html"title="trait halo2_proofs::plonk::FloorPlanner">FloorPlanner</a>;
}</code></pre></div><detailsclass="rustdoc-toggle top-doc"open><summaryclass="hideme"><span>Expand description</span></summary><divclass="docblock"><p>This is a trait that circuits provide implementations for so that the
backend prover can ask the circuit to synthesize using some given
</div></details><h2id="required-associated-types"class="small-section-header">Required Associated Types<ahref="#required-associated-types"class="anchor"></a></h2><divclass="methods"><detailsclass="rustdoc-toggle"open><summary><divid="associatedtype.Config"class="method has-srclink"><divclass="rightside"><aclass="srclink"href="../../src/halo2_proofs/plonk/circuit.rs.html#464">source</a></div><h4class="code-header">type <ahref="#associatedtype.Config"class="associatedtype">Config</a>: <aclass="trait"href="https://doc.rust-lang.org/nightly/core/clone/trait.Clone.html"title="trait core::clone::Clone">Clone</a></h4></div></summary><divclass="docblock"><p>This is a configuration object that stores things like columns.</p>
</div></details><detailsclass="rustdoc-toggle"open><summary><divid="associatedtype.FloorPlanner"class="method has-srclink"><divclass="rightside"><aclass="srclink"href="../../src/halo2_proofs/plonk/circuit.rs.html#467">source</a></div><h4class="code-header">type <ahref="#associatedtype.FloorPlanner"class="associatedtype">FloorPlanner</a>: <aclass="trait"href="trait.FloorPlanner.html"title="trait halo2_proofs::plonk::FloorPlanner">FloorPlanner</a></h4></div></summary><divclass="docblock"><p>The floor planner used for this circuit. This is an associated type of the
</div></details></div><h2id="required-methods"class="small-section-header">Required Methods<ahref="#required-methods"class="anchor"></a></h2><divclass="methods"><detailsclass="rustdoc-toggle"open><summary><divid="tymethod.without_witnesses"class="method has-srclink"><divclass="rightside"><aclass="srclink"href="../../src/halo2_proofs/plonk/circuit.rs.html#471">source</a></div><h4class="code-header">fn <ahref="#tymethod.without_witnesses"class="fnname">without_witnesses</a>(&self) -> Self</h4></div></summary><divclass="docblock"><p>Returns a copy of this circuit with no witness values (i.e. all witnesses set to
</div></details><detailsclass="rustdoc-toggle"open><summary><divid="tymethod.configure"class="method has-srclink"><divclass="rightside"><aclass="srclink"href="../../src/halo2_proofs/plonk/circuit.rs.html#475">source</a></div><h4class="code-header">fn <ahref="#tymethod.configure"class="fnname">configure</a>(meta: &mut <aclass="struct"href="struct.ConstraintSystem.html"title="struct halo2_proofs::plonk::ConstraintSystem">ConstraintSystem</a><F>) -> Self::<aclass="associatedtype"href="trait.Circuit.html#associatedtype.Config"title="type halo2_proofs::plonk::Circuit::Config">Config</a></h4></div></summary><divclass="docblock"><p>The circuit is given an opportunity to describe the exact gate
</div></details><detailsclass="rustdoc-toggle"open><summary><divid="tymethod.synthesize"class="method has-srclink"><divclass="rightside"><aclass="srclink"href="../../src/halo2_proofs/plonk/circuit.rs.html#480">source</a></div><h4class="code-header">fn <ahref="#tymethod.synthesize"class="fnname">synthesize</a>(<br> &self,<br> config: Self::<aclass="associatedtype"href="trait.Circuit.html#associatedtype.Config"title="type halo2_proofs::plonk::Circuit::Config">Config</a>,<br> layouter: impl <aclass="trait"href="../circuit/trait.Layouter.html"title="trait halo2_proofs::circuit::Layouter">Layouter</a><F><br>) -><aclass="enum"href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html"title="enum core::result::Result">Result</a><<aclass="primitive"href="https://doc.rust-lang.org/nightly/std/primitive.unit.html">()</a>, <aclass="enum"href="enum.Error.html"title="enum halo2_proofs::plonk::Error">Error</a>></h4></div></summary><divclass="docblock"><p>Given the provided <code>cs</code>, synthesize the circuit. The concrete type of
