| <!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 `/root/.cargo/registry/src/github.com-1ecc6299db9ec823/libm-0.2.7/src/lib.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>lib.rs - source</title><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceSerif4-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../FiraSans-Regular.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../FiraSans-Medium.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceCodePro-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceSerif4-Bold.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceCodePro-Semibold.ttf.woff2"><link rel="stylesheet" href="../../normalize.css"><link rel="stylesheet" href="../../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" href="../../ayu.css" disabled><link rel="stylesheet" href="../../dark.css" disabled><link rel="stylesheet" href="../../light.css" id="themeStyle"><script id="default-settings" ></script><script src="../../storage.js"></script><script defer src="../../source-script.js"></script><script defer src="../../source-files.js"></script><script defer src="../../main.js"></script><noscript><link rel="stylesheet" href="../../noscript.css"></noscript><link rel="alternate icon" type="image/png" href="../../favicon-16x16.png"><link rel="alternate icon" type="image/png" href="../../favicon-32x32.png"><link rel="icon" type="image/svg+xml" href="../../favicon.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"><a class="sidebar-logo" href="../../libm/index.html"><div class="logo-container"><img class="rust-logo" src="../../rust-logo.svg" alt="logo"></div></a></nav><main><div class="width-limiter"><nav class="sub"><a class="sub-logo-container" href="../../libm/index.html"><img class="rust-logo" src="../../rust-logo.svg" alt="logo"></a><form class="search-form"><div class="search-container"><span></span><input class="search-input" name="search" 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="../../wheel.svg"></a></div></div></form></nav><section id="main-content" class="content"><div class="example-wrap"><pre class="src-line-numbers"><span id="1">1</span> |
| <span id="2">2</span> |
| <span id="3">3</span> |
| <span id="4">4</span> |
| <span id="5">5</span> |
| <span id="6">6</span> |
| <span id="7">7</span> |
| <span id="8">8</span> |
| <span id="9">9</span> |
| <span id="10">10</span> |
| <span id="11">11</span> |
| <span id="12">12</span> |
| <span id="13">13</span> |
| <span id="14">14</span> |
| <span id="15">15</span> |
| <span id="16">16</span> |
| <span id="17">17</span> |
| <span id="18">18</span> |
| <span id="19">19</span> |
| <span id="20">20</span> |
| <span id="21">21</span> |
| <span id="22">22</span> |
| <span id="23">23</span> |
| <span id="24">24</span> |
| <span id="25">25</span> |
| <span id="26">26</span> |
| <span id="27">27</span> |
| <span id="28">28</span> |
| <span id="29">29</span> |
| <span id="30">30</span> |
| <span id="31">31</span> |
| <span id="32">32</span> |
| <span id="33">33</span> |
| <span id="34">34</span> |
| <span id="35">35</span> |
| <span id="36">36</span> |
| <span id="37">37</span> |
| <span id="38">38</span> |
| <span id="39">39</span> |
| <span id="40">40</span> |
| <span id="41">41</span> |
| <span id="42">42</span> |
| <span id="43">43</span> |
| <span id="44">44</span> |
| <span id="45">45</span> |
| <span id="46">46</span> |
| <span id="47">47</span> |
| <span id="48">48</span> |
| <span id="49">49</span> |
| <span id="50">50</span> |
| <span id="51">51</span> |
| <span id="52">52</span> |
| <span id="53">53</span> |
| <span id="54">54</span> |
| <span id="55">55</span> |
| <span id="56">56</span> |
| <span id="57">57</span> |
| <span id="58">58</span> |
| <span id="59">59</span> |
| </pre><pre class="rust"><code><span class="doccomment">//! libm in pure Rust |
| </span><span class="attribute">#![deny(warnings)] |
| #![no_std] |
| #![cfg_attr(all(feature = <span class="string">"unstable"</span>), feature(core_intrinsics))] |
| #![allow(clippy::unreadable_literal)] |
| #![allow(clippy::many_single_char_names)] |
| #![allow(clippy::needless_return)] |
| #![allow(clippy::int_plus_one)] |
| #![allow(clippy::deprecated_cfg_attr)] |
| #![allow(clippy::mixed_case_hex_literals)] |
| #![allow(clippy::float_cmp)] |
| #![allow(clippy::eq_op)] |
| #![allow(clippy::assign_op_pattern)] |
| |
| </span><span class="kw">mod </span>libm_helper; |
| <span class="kw">mod </span>math; |
| |
| <span class="kw">use </span>core::{f32, f64}; |
| |
| <span class="kw">pub use </span><span class="self">self</span>::math::<span class="kw-2">*</span>; |
| <span class="kw">pub use </span>libm_helper::<span class="kw-2">*</span>; |
| |
| <span class="doccomment">/// Approximate equality with 1 ULP of tolerance |
| </span><span class="attribute">#[doc(hidden)] |
| #[inline] |
| </span><span class="kw">pub fn </span>_eqf(a: f32, b: f32) -> <span class="prelude-ty">Result</span><(), u32> { |
| <span class="kw">if </span>a.is_nan() && b.is_nan() { |
| <span class="prelude-val">Ok</span>(()) |
| } <span class="kw">else </span>{ |
| <span class="kw">let </span>err = (a.to_bits() <span class="kw">as </span>i32).wrapping_sub(b.to_bits() <span class="kw">as </span>i32).abs(); |
| |
| <span class="kw">if </span>err <= <span class="number">1 </span>{ |
| <span class="prelude-val">Ok</span>(()) |
| } <span class="kw">else </span>{ |
| <span class="prelude-val">Err</span>(err <span class="kw">as </span>u32) |
| } |
| } |
| } |
| |
| <span class="attribute">#[doc(hidden)] |
| #[inline] |
| </span><span class="kw">pub fn </span>_eq(a: f64, b: f64) -> <span class="prelude-ty">Result</span><(), u64> { |
| <span class="kw">if </span>a.is_nan() && b.is_nan() { |
| <span class="prelude-val">Ok</span>(()) |
| } <span class="kw">else </span>{ |
| <span class="kw">let </span>err = (a.to_bits() <span class="kw">as </span>i64).wrapping_sub(b.to_bits() <span class="kw">as </span>i64).abs(); |
| |
| <span class="kw">if </span>err <= <span class="number">1 </span>{ |
| <span class="prelude-val">Ok</span>(()) |
| } <span class="kw">else </span>{ |
| <span class="prelude-val">Err</span>(err <span class="kw">as </span>u64) |
| } |
| } |
| } |
| |
| <span class="comment">// PowerPC tests are failing on LLVM 13: https://github.com/rust-lang/rust/issues/88520 |
| </span><span class="attribute">#[cfg(not(target_arch = <span class="string">"powerpc64"</span>))] |
| #[cfg(all(test, feature = <span class="string">"musl-reference-tests"</span>))] |
| </span><span class="macro">include!</span>(<span class="macro">concat!</span>(<span class="macro">env!</span>(<span class="string">"OUT_DIR"</span>), <span class="string">"/musl-tests.rs"</span>)); |
| </code></pre></div> |
| </section></div></main><div id="rustdoc-vars" data-root-path="../../" data-current-crate="libm" data-themes="ayu,dark,light" data-resource-suffix="" data-rustdoc-version="1.66.0-nightly (5c8bff74b 2022-10-21)" ></div></body></html> |
