<!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="The set of circuit instructions required to use the [`Sponge`] and `Hash` gadgets."><metaname="keywords"content="rust, rustlang, rust-lang, PoseidonSpongeInstructions"><title>PoseidonSpongeInstructions in halo2_gadgets::poseidon - 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">
}</code></pre></div><detailsclass="rustdoc-toggle top-doc"open><summaryclass="hideme"><span>Expand description</span></summary><divclass="docblock"><p>The set of circuit instructions required to use the <ahref="struct.Sponge.html"title="Sponge"><code>Sponge</code></a> and <ahref="struct.Hash.html"><code>Hash</code></a> gadgets.</p>
</div></details><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.initial_state"class="method has-srclink"><aclass="srclink rightside"href="../../src/halo2_gadgets/poseidon.rs.html#56-57">source</a><h4class="code-header">fn <ahref="#tymethod.initial_state"class="fnname">initial_state</a>(<br> &self,<br> layouter: &mut impl Layouter<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.array.html">[</a>Self::<aclass="associatedtype"href="trait.PoseidonInstructions.html#associatedtype.Word"title="type halo2_gadgets::poseidon::PoseidonInstructions::Word">Word</a><aclass="primitive"href="https://doc.rust-lang.org/nightly/std/primitive.array.html">; T]</a>, Error></h4></div></summary><divclass="docblock"><p>Returns the initial empty state for the given domain.</p>
</div></details><detailsclass="rustdoc-toggle"open><summary><divid="tymethod.add_input"class="method has-srclink"><aclass="srclink rightside"href="../../src/halo2_gadgets/poseidon.rs.html#60-65">source</a><h4class="code-header">fn <ahref="#tymethod.add_input"class="fnname">add_input</a>(<br> &self,<br> layouter: &mut impl Layouter<F>,<br> initial_state: &<aclass="primitive"href="https://doc.rust-lang.org/nightly/std/primitive.array.html">[</a>Self::<aclass="associatedtype"href="trait.PoseidonInstructions.html#associatedtype.Word"title="type halo2_gadgets::poseidon::PoseidonInstructions::Word">Word</a><aclass="primitive"href="https://doc.rust-lang.org/nightly/std/primitive.array.html">; T]</a>,<br> input: &<aclass="struct"href="primitives/struct.Absorbing.html"title="struct halo2_gadgets::poseidon::primitives::Absorbing">Absorbing</a><<aclass="enum"href="enum.PaddedWord.html"title="enum halo2_gadgets::poseidon::PaddedWord">PaddedWord</a><F>, RATE><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.array.html">[</a>Self::<aclass="associatedtype"href="trait.PoseidonInstructions.html#associatedtype.Word"title="type halo2_gadgets::poseidon::PoseidonInstructions::Word">Word</a><aclass="primitive"href="https://doc.rust-lang.org/nightly/std/primitive.array.html">; T]</a>, Error></h4></div></summary><divclass="docblock"><p>Adds the given input to the state.</p>