| <!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/matrixmultiply-0.1.15/src/kernel.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>kernel.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="../../matrixmultiply/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="../../matrixmultiply/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> |
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| </pre><pre class="rust"><code><span class="comment">// Copyright 2016 bluss |
| // |
| // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or |
| // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license |
| // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your |
| // option. This file may not be copied, modified, or distributed |
| // except according to those terms. |
| |
| </span><span class="doccomment">/// General matrix multiply kernel |
| </span><span class="kw">pub trait </span>GemmKernel { |
| <span class="kw">type </span>Elem: Element; |
| |
| <span class="doccomment">/// align inputs to this |
| </span><span class="kw">fn </span>align_to() -> usize; |
| |
| <span class="doccomment">/// Kernel rows |
| </span><span class="kw">fn </span>mr() -> usize; |
| <span class="doccomment">/// Kernel cols |
| </span><span class="kw">fn </span>nr() -> usize; |
| |
| <span class="doccomment">/// Whether to always use the masked wrapper around the kernel. |
| /// |
| /// If masked, the kernel is always called with α=1, β=0 |
| </span><span class="kw">fn </span>always_masked() -> bool; |
| |
| <span class="kw">fn </span>nc() -> usize; |
| <span class="kw">fn </span>kc() -> usize; |
| <span class="kw">fn </span>mc() -> usize; |
| |
| <span class="doccomment">/// Matrix multiplication kernel |
| /// |
| /// This does the matrix multiplication: |
| /// |
| /// C := alpha * A * B + beta * C |
| /// |
| /// + `k`: length of data in a, b |
| /// + a, b are packed |
| /// + c has general strides |
| /// + rsc: row stride of c |
| /// + csc: col stride of c |
| /// + if `beta` is `0.`, then c does not need to be initialized |
| </span><span class="kw">unsafe fn </span>kernel( |
| k: usize, |
| alpha: <span class="self">Self</span>::Elem, |
| a: <span class="kw-2">*const </span><span class="self">Self</span>::Elem, |
| b: <span class="kw-2">*const </span><span class="self">Self</span>::Elem, |
| beta: <span class="self">Self</span>::Elem, |
| c: <span class="kw-2">*mut </span><span class="self">Self</span>::Elem, rsc: isize, csc: isize); |
| } |
| |
| <span class="kw">pub trait </span>Element : Copy { |
| <span class="kw">fn </span>zero() -> <span class="self">Self</span>; |
| <span class="kw">fn </span>one() -> <span class="self">Self</span>; |
| <span class="kw">fn </span>is_zero(<span class="kw-2">&</span><span class="self">self</span>) -> bool; |
| <span class="kw">fn </span>scale_by(<span class="kw-2">&mut </span><span class="self">self</span>, x: <span class="self">Self</span>); |
| <span class="kw">fn </span>scaled_add(<span class="kw-2">&mut </span><span class="self">self</span>, alpha: <span class="self">Self</span>, a: <span class="self">Self</span>); |
| } |
| |
| <span class="kw">impl </span>Element <span class="kw">for </span>f32 { |
| <span class="kw">fn </span>zero() -> <span class="self">Self </span>{ <span class="number">0. </span>} |
| <span class="kw">fn </span>one() -> <span class="self">Self </span>{ <span class="number">1. </span>} |
| <span class="kw">fn </span>is_zero(<span class="kw-2">&</span><span class="self">self</span>) -> bool { <span class="kw-2">*</span><span class="self">self </span>== <span class="number">0. </span>} |
| <span class="kw">fn </span>scale_by(<span class="kw-2">&mut </span><span class="self">self</span>, x: <span class="self">Self</span>) { |
| <span class="kw-2">*</span><span class="self">self </span><span class="kw-2">*</span>= x; |
| } |
| <span class="kw">fn </span>scaled_add(<span class="kw-2">&mut </span><span class="self">self</span>, alpha: <span class="self">Self</span>, a: <span class="self">Self</span>) { |
| <span class="kw-2">*</span><span class="self">self </span>+= alpha * a; |
| } |
| } |
| |
| <span class="kw">impl </span>Element <span class="kw">for </span>f64 { |
| <span class="kw">fn </span>zero() -> <span class="self">Self </span>{ <span class="number">0. </span>} |
| <span class="kw">fn </span>one() -> <span class="self">Self </span>{ <span class="number">1. </span>} |
| <span class="kw">fn </span>is_zero(<span class="kw-2">&</span><span class="self">self</span>) -> bool { <span class="kw-2">*</span><span class="self">self </span>== <span class="number">0. </span>} |
| <span class="kw">fn </span>scale_by(<span class="kw-2">&mut </span><span class="self">self</span>, x: <span class="self">Self</span>) { |
| <span class="kw-2">*</span><span class="self">self </span><span class="kw-2">*</span>= x; |
| } |
| <span class="kw">fn </span>scaled_add(<span class="kw-2">&mut </span><span class="self">self</span>, alpha: <span class="self">Self</span>, a: <span class="self">Self</span>) { |
| <span class="kw-2">*</span><span class="self">self </span>+= alpha * a; |
| } |
| } |
| </code></pre></div> |
| </section></div></main><div id="rustdoc-vars" data-root-path="../../" data-current-crate="matrixmultiply" data-themes="ayu,dark,light" data-resource-suffix="" data-rustdoc-version="1.66.0-nightly (5c8bff74b 2022-10-21)" ></div></body></html> |