129 lines
4.7 KiB
HTML
129 lines
4.7 KiB
HTML
<!DOCTYPE html>
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<meta name="generator" content="rustdoc">
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<meta name="description" content="API documentation for the Rust `signum` fn in crate `num`.">
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<meta name="keywords" content="rust, rustlang, rust-lang, signum">
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<title>num::signum - Rust</title>
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This old browser is unsupported and will most likely display funky
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things.
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<nav class="sidebar">
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<a href='../num/index.html'><img src='https://rust-num.github.io/num/rust-logo-128x128-blk-v2.png' alt='logo' width='100'></a>
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<p class='location'><a href='index.html'>num</a></p><script>window.sidebarCurrent = {name: 'signum', ty: 'fn', relpath: ''};</script><script defer src="sidebar-items.js"></script>
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<section id='main' class="content">
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<h1 class='fqn'><span class='in-band'>Function <a href='index.html'>num</a>::<wbr><a class="fn" href=''>signum</a></span><span class='out-of-band'><span id='render-detail'>
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<a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">
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[<span class='inner'>−</span>]
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</span><a class='srclink' href='../src/num_traits/sign.rs.html#175' title='goto source code'>[src]</a></span></h1>
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<pre class='rust fn'>pub fn signum<T>(value: T) -> T <span class="where fmt-newline">where<br> T: <a class="trait" href="../num/trait.Signed.html" title="trait num::Signed">Signed</a>, </span></pre><div class='docblock'><p>Returns the sign of the number.</p>
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<p>For <code>f32</code> and <code>f64</code>:</p>
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<ul>
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<li><code>1.0</code> if the number is positive, <code>+0.0</code> or <code>INFINITY</code></li>
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<li><code>-1.0</code> if the number is negative, <code>-0.0</code> or <code>NEG_INFINITY</code></li>
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<li><code>NaN</code> if the number is <code>NaN</code></li>
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</ul>
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<p>For signed integers:</p>
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<ul>
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<li><code>0</code> if the number is zero</li>
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<li><code>1</code> if the number is positive</li>
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<li><code>-1</code> if the number is negative</li>
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<h2>Search Tricks</h2>
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Prefix searches with a type followed by a colon (e.g.
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Accepted types are: <code>fn</code>, <code>mod</code>,
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