<!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 to the Rust file `libcore/../stdsimd/coresimd/ppsv/api/from.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>from.rs.html -- source</title><link rel="stylesheet" type="text/css" href="../../../../../../../normalize.css"><link rel="stylesheet" type="text/css" href="../../../../../../../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" type="text/css" href="../../../../../../../dark.css"><link rel="stylesheet" type="text/css" href="../../../../../../../light.css" id="themeStyle"><script src="../../../../../../../storage.js"></script><link rel="shortcut icon" href="https://doc.rust-lang.org/favicon.ico"></head><body class="rustdoc source"><!--[if lte IE 8]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><div class="sidebar-menu">☰</div><a href='../../../../../../../core/index.html'><img src='https://www.rust-lang.org/logos/rust-logo-128x128-blk-v2.png' alt='logo' width='100'></a></nav><div class="theme-picker"><button id="theme-picker" aria-label="Pick another theme!"><img src="../../../../../../../brush.svg" width="18" alt="Pick another theme!"></button><div id="theme-choices"></div></div><script src="../../../../../../../theme.js"></script><nav class="sub"><form class="search-form js-only"><div class="search-container"><input class="search-input" name="search" autocomplete="off" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"><a id="settings-menu" href="../../../../../../../settings.html"><img src="../../../../../../../wheel.svg" width="18" alt="Change settings"></a></div></form></nav><section id="main" class="content"><pre class="line-numbers"><span id="1"> 1</span>
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</pre><pre class="rust ">
<span class="doccomment">//! Implements the From trait for vector types, which performs a lane-wise</span>
<span class="doccomment">//! cast vector types with the same number of lanes.</span>
<span class="attribute">#![<span class="ident">allow</span>(<span class="ident">unused</span>)]</span>
<span class="macro">macro_rules</span><span class="macro">!</span> <span class="ident">impl_from_impl</span> {
(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">from</span>:<span class="ident">ident</span>, <span class="macro-nonterminal">$</span><span class="macro-nonterminal">to</span>:<span class="ident">ident</span>) <span class="op">=></span> {
<span class="kw">impl</span> ::<span class="ident">convert</span>::<span class="ident">From</span><span class="op"><</span>::<span class="ident">simd</span>::<span class="macro-nonterminal">$</span><span class="macro-nonterminal">from</span><span class="op">></span> <span class="kw">for</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">to</span> {
<span class="attribute">#[<span class="ident">inline</span>]</span>
<span class="kw">fn</span> <span class="ident">from</span>(<span class="ident">f</span>: ::<span class="ident">simd</span>::<span class="macro-nonterminal">$</span><span class="macro-nonterminal">from</span>) <span class="op">-></span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">to</span> {
<span class="kw">use</span> <span class="ident">coresimd</span>::<span class="ident">simd_llvm</span>::<span class="ident">simd_cast</span>;
<span class="kw">unsafe</span> { <span class="ident">simd_cast</span>(<span class="ident">f</span>) }
}
}
};
}
<span class="macro">macro_rules</span><span class="macro">!</span> <span class="ident">impl_from_</span> {
(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">to</span>:<span class="ident">ident</span>, <span class="macro-nonterminal">$</span><span class="macro-nonterminal">from</span>:<span class="ident">ident</span>) <span class="op">=></span> {
<span class="macro">vector_impl</span><span class="macro">!</span>([<span class="ident">impl_from_impl</span>, <span class="macro-nonterminal">$</span><span class="macro-nonterminal">to</span>, <span class="macro-nonterminal">$</span><span class="macro-nonterminal">from</span>]);
};
}
<span class="macro">macro_rules</span><span class="macro">!</span> <span class="ident">impl_from</span> {
(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">to</span>:<span class="ident">ident</span>: <span class="macro-nonterminal">$</span><span class="macro-nonterminal">elem_ty</span>:<span class="ident">ident</span>, <span class="macro-nonterminal">$</span><span class="macro-nonterminal">test_mod</span>:<span class="ident">ident</span>, <span class="macro-nonterminal">$</span><span class="macro-nonterminal">test_macro</span>:<span class="ident">ident</span> <span class="op">|</span> $(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">from</span>:<span class="ident">ident</span>),<span class="op">+</span>) <span class="op">=></span> {
$(
<span class="macro">impl_from_</span><span class="macro">!</span>(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">from</span>, <span class="macro-nonterminal">$</span><span class="macro-nonterminal">to</span>);
)<span class="op">+</span>
<span class="macro-nonterminal">$</span><span class="macro-nonterminal">test_macro</span><span class="op">!</span>(
<span class="attribute">#[<span class="ident">cfg</span>(<span class="ident">test</span>)]</span>
<span class="kw">mod</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">test_mod</span> {
$(
<span class="attribute">#[<span class="ident">test</span>]</span>
<span class="kw">fn</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">from</span>() {
<span class="kw">use</span> <span class="ident">std</span>::<span class="ident">convert</span>::{<span class="ident">From</span>, <span class="ident">Into</span>};
<span class="kw">use</span> ::<span class="ident">coresimd</span>::<span class="ident">simd</span>::{<span class="macro-nonterminal">$</span><span class="macro-nonterminal">from</span>, <span class="macro-nonterminal">$</span><span class="macro-nonterminal">to</span>};
<span class="kw">use</span> ::<span class="ident">std</span>::<span class="ident">default</span>::<span class="ident">Default</span>;
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="macro-nonterminal">$</span><span class="macro-nonterminal">to</span>::<span class="ident">lanes</span>(), <span class="macro-nonterminal">$</span><span class="macro-nonterminal">from</span>::<span class="ident">lanes</span>());
<span class="kw">let</span> <span class="ident">a</span>: <span class="macro-nonterminal">$</span><span class="macro-nonterminal">from</span> <span class="op">=</span> <span class="macro-nonterminal">$</span><span class="macro-nonterminal">from</span>::<span class="ident">default</span>();
<span class="kw">let</span> <span class="ident">b_0</span>: <span class="macro-nonterminal">$</span><span class="macro-nonterminal">to</span> <span class="op">=</span> <span class="ident">From</span>::<span class="ident">from</span>(<span class="ident">a</span>);
<span class="kw">let</span> <span class="ident">b_1</span>: <span class="macro-nonterminal">$</span><span class="macro-nonterminal">to</span> <span class="op">=</span> <span class="ident">a</span>.<span class="ident">into</span>();
<span class="macro">assert_eq</span><span class="macro">!</span>(<span class="ident">b_0</span>, <span class="ident">b_1</span>);
}
)<span class="op">+</span>
}
);
}
}
</pre>
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