<!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="Source of the Rust file `/Users/m018/.cargo/registry/src/github.com-1ecc6299db9ec823/num-traits-0.2.16/src/macros.rs`."><title>macros.rs - source</title><link rel="preload" as="font" type="font/woff2" crossorigin href="../../static.files/SourceSerif4-Regular-46f98efaafac5295.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../static.files/FiraSans-Regular-018c141bf0843ffd.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../static.files/FiraSans-Medium-8f9a781e4970d388.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../static.files/SourceCodePro-Regular-562dcc5011b6de7d.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../static.files/SourceSerif4-Bold-a2c9cd1067f8b328.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../static.files/SourceCodePro-Semibold-d899c5a5c4aeb14a.ttf.woff2"><link rel="stylesheet" href="../../static.files/normalize-76eba96aa4d2e634.css"><link rel="stylesheet" href="../../static.files/rustdoc-c4dbdcde0fbd8430.css" id="mainThemeStyle"><link rel="stylesheet" id="themeStyle" href="../../static.files/light-db279b6232be9c13.css"><link rel="stylesheet" disabled href="../../static.files/dark-cf923f49f397b216.css"><link rel="stylesheet" disabled href="../../static.files/ayu-be46fdc453a55015.css"><script src="../../static.files/storage-3891ce972e3a2bf8.js"></script><script defer src="../../static.files/source-script-1b95b7cca98b26e5.js"></script><script defer src="../../source-files.js"></script><script defer src="../../static.files/main-98a684e84ae5b08b.js"></script><noscript><link rel="stylesheet" href="../../static.files/noscript-13285aec31fa243e.css"></noscript><link rel="alternate icon" type="image/png" href="../../static.files/favicon-16x16-8b506e7a72182f1c.png"><link rel="alternate icon" type="image/png" href="../../static.files/favicon-32x32-422f7d1d52889060.png"><link rel="icon" type="image/svg+xml" href="../../static.files/favicon-2c020d218678b618.svg"></head><body class="rustdoc source"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"></nav><main><nav class="sub"><a class="sub-logo-container" href="../../num_traits/index.html"><img class="rust-logo" src="../../static.files/rust-logo-151179464ae7ed46.svg" alt="logo"></a><form class="search-form"><span></span><input class="search-input" name="search" aria-label="Run search in the documentation" 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="../../static.files/wheel-7b819b6101059cd0.svg"></a></div></form></nav><section id="main-content" class="content"><div class="example-wrap"><pre class="src-line-numbers"><a href="#1" id="1">1</a>
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</pre><pre class="rust"><code><span class="comment">// not all are used in all features configurations
</span><span class="attr">#![allow(unused)]
</span><span class="doccomment">/// Forward a method to an inherent method or a base trait method.
</span><span class="macro">macro_rules! </span>forward {
($( <span class="self">Self </span>:: <span class="macro-nonterminal">$method</span>:ident ( <span class="self">self </span>$( , <span class="macro-nonterminal">$arg</span>:ident : <span class="macro-nonterminal">$ty</span>:ty )* ) -> <span class="macro-nonterminal">$ret</span>:ty ; )<span class="kw-2">*</span>)
=> {$(
<span class="attr">#[inline]
</span><span class="kw">fn </span><span class="macro-nonterminal">$method</span>(<span class="self">self </span>$( , <span class="macro-nonterminal">$arg </span>: <span class="macro-nonterminal">$ty </span>)* ) -> <span class="macro-nonterminal">$ret </span>{
<span class="self">Self</span>::<span class="macro-nonterminal">$method</span>(<span class="self">self </span>$( , <span class="macro-nonterminal">$arg </span>)* )
}
)<span class="kw-2">*</span>};
($( <span class="macro-nonterminal">$base</span>:ident :: <span class="macro-nonterminal">$method</span>:ident ( <span class="self">self </span>$( , <span class="macro-nonterminal">$arg</span>:ident : <span class="macro-nonterminal">$ty</span>:ty )* ) -> <span class="macro-nonterminal">$ret</span>:ty ; )<span class="kw-2">*</span>)
=> {$(
<span class="attr">#[inline]
</span><span class="kw">fn </span><span class="macro-nonterminal">$method</span>(<span class="self">self </span>$( , <span class="macro-nonterminal">$arg </span>: <span class="macro-nonterminal">$ty </span>)* ) -> <span class="macro-nonterminal">$ret </span>{
<<span class="self">Self </span><span class="kw">as </span><span class="macro-nonterminal">$base</span>>::<span class="macro-nonterminal">$method</span>(<span class="self">self </span>$( , <span class="macro-nonterminal">$arg </span>)* )
}
)<span class="kw-2">*</span>};
($( <span class="macro-nonterminal">$base</span>:ident :: <span class="macro-nonterminal">$method</span>:ident ( $( <span class="macro-nonterminal">$arg</span>:ident : <span class="macro-nonterminal">$ty</span>:ty ),* ) -> <span class="macro-nonterminal">$ret</span>:ty ; )<span class="kw-2">*</span>)
=> {$(
<span class="attr">#[inline]
</span><span class="kw">fn </span><span class="macro-nonterminal">$method</span>( $( <span class="macro-nonterminal">$arg </span>: <span class="macro-nonterminal">$ty </span>),* ) -> <span class="macro-nonterminal">$ret </span>{
<<span class="self">Self </span><span class="kw">as </span><span class="macro-nonterminal">$base</span>>::<span class="macro-nonterminal">$method</span>( $( <span class="macro-nonterminal">$arg </span>),* )
}
)<span class="kw-2">*</span>};
($( <span class="macro-nonterminal">$imp</span>:path <span class="kw">as </span><span class="macro-nonterminal">$method</span>:ident ( <span class="self">self </span>$( , <span class="macro-nonterminal">$arg</span>:ident : <span class="macro-nonterminal">$ty</span>:ty )* ) -> <span class="macro-nonterminal">$ret</span>:ty ; )<span class="kw-2">*</span>)
=> {$(
<span class="attr">#[inline]
</span><span class="kw">fn </span><span class="macro-nonterminal">$method</span>(<span class="self">self </span>$( , <span class="macro-nonterminal">$arg </span>: <span class="macro-nonterminal">$ty </span>)* ) -> <span class="macro-nonterminal">$ret </span>{
<span class="macro-nonterminal">$imp</span>(<span class="self">self </span>$( , <span class="macro-nonterminal">$arg </span>)* )
}
)<span class="kw-2">*</span>};
}
<span class="macro">macro_rules! </span>constant {
($( <span class="macro-nonterminal">$method</span>:ident () -> <span class="macro-nonterminal">$ret</span>:expr ; )<span class="kw-2">*</span>)
=> {$(
<span class="attr">#[inline]
</span><span class="kw">fn </span><span class="macro-nonterminal">$method</span>() -> <span class="self">Self </span>{
<span class="macro-nonterminal">$ret
</span>}
)<span class="kw-2">*</span>};
}
</code></pre></div>
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