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<!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/git/checkouts/rulinalg-309246e5a94bf5cf/1ed8b93/src/matrix/base/impl_base.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>impl_base.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="../../../../rulinalg/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="../../../../rulinalg/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="kw">use super</span>::{BaseMatrix, BaseMatrixMut};
<span class="kw">use </span>matrix::{Matrix, MatrixSlice, MatrixSliceMut};
<span class="kw">use </span>matrix::{Row, RowMut, Column, ColumnMut};
<span class="kw">use </span>utils;
<span class="kw">use </span>libnum::Zero;
<span class="kw">use </span>std::ops::{Add, Mul, Div};
<span class="kw">impl</span>&lt;T&gt; BaseMatrix&lt;T&gt; <span class="kw">for </span>Matrix&lt;T&gt; {
<span class="kw">fn </span>rows(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; usize {
<span class="self">self</span>.rows
}
<span class="kw">fn </span>cols(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; usize {
<span class="self">self</span>.cols
}
<span class="kw">fn </span>row_stride(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; usize {
<span class="self">self</span>.cols
}
<span class="kw">fn </span>is_empty(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; bool {
<span class="self">self</span>.data.is_empty()
}
<span class="kw">fn </span>as_ptr(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; <span class="kw-2">*const </span>T {
<span class="self">self</span>.data.as_ptr()
}
<span class="kw">fn </span>into_matrix(<span class="self">self</span>) -&gt; Matrix&lt;T&gt;
<span class="kw">where </span>T: Copy
{
<span class="self">self </span><span class="comment">// for Matrix, this is a no-op
</span>}
<span class="kw">fn </span>sum(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; T
<span class="kw">where </span>T: Copy + Zero + Add&lt;T, Output = T&gt;
{
utils::unrolled_sum(<span class="kw-2">&amp;</span><span class="self">self</span>.data[..])
}
<span class="kw">fn </span>elemul(<span class="kw-2">&amp;</span><span class="self">self</span>, m: <span class="kw-2">&amp;</span><span class="self">Self</span>) -&gt; Matrix&lt;T&gt;
<span class="kw">where </span>T: Copy + Mul&lt;T, Output = T&gt;
{
<span class="macro">assert!</span>(<span class="self">self</span>.rows() == m.rows(), <span class="string">&quot;Matrix row counts not equal.&quot;</span>);
<span class="macro">assert!</span>(<span class="self">self</span>.cols() == m.cols(), <span class="string">&quot;Matrix column counts not equal.&quot;</span>);
<span class="kw">let </span>data = utils::vec_bin_op(<span class="self">self</span>.data(), m.data(), T::mul);
Matrix::new(<span class="self">self</span>.rows(), <span class="self">self</span>.cols(), data)
}
<span class="kw">fn </span>elediv(<span class="kw-2">&amp;</span><span class="self">self</span>, m: <span class="kw-2">&amp;</span><span class="self">Self</span>) -&gt; Matrix&lt;T&gt;
<span class="kw">where </span>T: Copy + Div&lt;T, Output = T&gt;
{
<span class="macro">assert!</span>(<span class="self">self</span>.rows() == m.rows(), <span class="string">&quot;Matrix row counts not equal.&quot;</span>);
<span class="macro">assert!</span>(<span class="self">self</span>.cols() == m.cols(), <span class="string">&quot;Matrix column counts not equal.&quot;</span>);
<span class="kw">let </span>data = utils::vec_bin_op(<span class="self">self</span>.data(), m.data(), T::div);
Matrix::new(<span class="self">self</span>.rows(), <span class="self">self</span>.cols(), data)
}
<span class="kw">fn </span>vcat&lt;S&gt;(<span class="kw-2">&amp;</span><span class="self">self</span>, m: <span class="kw-2">&amp;</span>S) -&gt; Matrix&lt;T&gt;
<span class="kw">where </span>T: Copy,
S: BaseMatrix&lt;T&gt;
{
<span class="macro">assert!</span>(<span class="self">self</span>.cols() == m.cols(),
<span class="string">&quot;Matrix column counts are not equal.&quot;</span>);
<span class="kw">let </span><span class="kw-2">mut </span>new_data = <span class="self">self</span>.data.clone();
new_data.reserve(m.rows() * m.cols());
<span class="kw">for </span>row <span class="kw">in </span>m.row_iter() {
new_data.extend_from_slice(row.raw_slice());
}
Matrix {
cols: <span class="self">self</span>.cols(),
rows: (<span class="self">self</span>.rows() + m.rows()),
data: new_data,
}
}
}
<span class="kw">impl</span>&lt;<span class="lifetime">&#39;a</span>, T&gt; BaseMatrix&lt;T&gt; <span class="kw">for </span>MatrixSlice&lt;<span class="lifetime">&#39;a</span>, T&gt; {
<span class="kw">fn </span>rows(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; usize {
<span class="self">self</span>.rows
}
<span class="kw">fn </span>cols(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; usize {
<span class="self">self</span>.cols
}
<span class="kw">fn </span>row_stride(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; usize {
<span class="self">self</span>.row_stride
}
<span class="kw">fn </span>as_ptr(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; <span class="kw-2">*const </span>T {
<span class="self">self</span>.ptr
}
}
<span class="kw">impl</span>&lt;<span class="lifetime">&#39;a</span>, T&gt; BaseMatrix&lt;T&gt; <span class="kw">for </span>MatrixSliceMut&lt;<span class="lifetime">&#39;a</span>, T&gt; {
<span class="kw">fn </span>rows(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; usize {
<span class="self">self</span>.rows
}
<span class="kw">fn </span>cols(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; usize {
<span class="self">self</span>.cols
}
<span class="kw">fn </span>row_stride(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; usize {
<span class="self">self</span>.row_stride
}
<span class="kw">fn </span>as_ptr(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; <span class="kw-2">*const </span>T {
<span class="self">self</span>.ptr <span class="kw">as </span><span class="kw-2">*const </span>T
}
}
<span class="kw">impl</span>&lt;T&gt; BaseMatrixMut&lt;T&gt; <span class="kw">for </span>Matrix&lt;T&gt; {
<span class="doccomment">/// Top left index of the slice.
</span><span class="kw">fn </span>as_mut_ptr(<span class="kw-2">&amp;mut </span><span class="self">self</span>) -&gt; <span class="kw-2">*mut </span>T {
<span class="self">self</span>.data.as_mut_ptr()
}
}
<span class="kw">impl</span>&lt;<span class="lifetime">&#39;a</span>, T&gt; BaseMatrixMut&lt;T&gt; <span class="kw">for </span>MatrixSliceMut&lt;<span class="lifetime">&#39;a</span>, T&gt; {
<span class="doccomment">/// Top left index of the slice.
</span><span class="kw">fn </span>as_mut_ptr(<span class="kw-2">&amp;mut </span><span class="self">self</span>) -&gt; <span class="kw-2">*mut </span>T {
<span class="self">self</span>.ptr
}
}
<span class="kw">impl</span>&lt;<span class="lifetime">&#39;a</span>, T&gt; BaseMatrix&lt;T&gt; <span class="kw">for </span>Row&lt;<span class="lifetime">&#39;a</span>, T&gt; {
<span class="kw">fn </span>rows(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; usize {
<span class="number">1
</span>}
<span class="kw">fn </span>cols(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; usize {
<span class="self">self</span>.row.cols()
}
<span class="kw">fn </span>row_stride(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; usize {
<span class="self">self</span>.row.row_stride()
}
<span class="kw">fn </span>as_ptr(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; <span class="kw-2">*const </span>T {
<span class="self">self</span>.row.as_ptr()
}
}
<span class="kw">impl</span>&lt;<span class="lifetime">&#39;a</span>, T&gt; BaseMatrix&lt;T&gt; <span class="kw">for </span>RowMut&lt;<span class="lifetime">&#39;a</span>, T&gt; {
<span class="kw">fn </span>rows(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; usize {
<span class="number">1
</span>}
<span class="kw">fn </span>cols(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; usize {
<span class="self">self</span>.row.cols()
}
<span class="kw">fn </span>row_stride(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; usize {
<span class="self">self</span>.row.row_stride()
}
<span class="kw">fn </span>as_ptr(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; <span class="kw-2">*const </span>T {
<span class="self">self</span>.row.as_ptr()
}
}
<span class="kw">impl</span>&lt;<span class="lifetime">&#39;a</span>, T&gt; BaseMatrixMut&lt;T&gt; <span class="kw">for </span>RowMut&lt;<span class="lifetime">&#39;a</span>, T&gt; {
<span class="doccomment">/// Top left index of the slice.
</span><span class="kw">fn </span>as_mut_ptr(<span class="kw-2">&amp;mut </span><span class="self">self</span>) -&gt; <span class="kw-2">*mut </span>T {
<span class="self">self</span>.row.as_mut_ptr()
}
}
<span class="kw">impl</span>&lt;<span class="lifetime">&#39;a</span>, T&gt; BaseMatrix&lt;T&gt; <span class="kw">for </span>Column&lt;<span class="lifetime">&#39;a</span>, T&gt; {
<span class="kw">fn </span>rows(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; usize {
<span class="self">self</span>.col.rows()
}
<span class="kw">fn </span>cols(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; usize {
<span class="number">1
</span>}
<span class="kw">fn </span>row_stride(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; usize {
<span class="self">self</span>.col.row_stride()
}
<span class="kw">fn </span>as_ptr(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; <span class="kw-2">*const </span>T {
<span class="self">self</span>.col.as_ptr()
}
}
<span class="kw">impl</span>&lt;<span class="lifetime">&#39;a</span>, T&gt; BaseMatrix&lt;T&gt; <span class="kw">for </span>ColumnMut&lt;<span class="lifetime">&#39;a</span>, T&gt; {
<span class="kw">fn </span>rows(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; usize {
<span class="self">self</span>.col.rows()
}
<span class="kw">fn </span>cols(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; usize {
<span class="number">1
</span>}
<span class="kw">fn </span>row_stride(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; usize {
<span class="self">self</span>.col.row_stride()
}
<span class="kw">fn </span>as_ptr(<span class="kw-2">&amp;</span><span class="self">self</span>) -&gt; <span class="kw-2">*const </span>T {
<span class="self">self</span>.col.as_ptr()
}
}
<span class="kw">impl</span>&lt;<span class="lifetime">&#39;a</span>, T&gt; BaseMatrixMut&lt;T&gt; <span class="kw">for </span>ColumnMut&lt;<span class="lifetime">&#39;a</span>, T&gt; {
<span class="doccomment">/// Top left index of the slice.
</span><span class="kw">fn </span>as_mut_ptr(<span class="kw-2">&amp;mut </span><span class="self">self</span>) -&gt; <span class="kw-2">*mut </span>T {
<span class="self">self</span>.col.as_mut_ptr()
}
}
<span class="attribute">#[cfg(test)]
</span><span class="kw">mod </span>tests {
<span class="kw">use </span>matrix::{Matrix, MatrixSlice, MatrixSliceMut};
<span class="kw">use </span>matrix::{BaseMatrix, BaseMatrixMut};
<span class="kw">use </span>matrix::{Axes, DiagOffset};
<span class="attribute">#[test]
</span><span class="kw">fn </span>test_sub_slice() {
<span class="kw">let </span><span class="kw-2">mut </span>a = Matrix::new(<span class="number">4</span>, <span class="number">4</span>, (<span class="number">0</span>..<span class="number">16</span>).collect::&lt;Vec&lt;<span class="kw">_</span>&gt;&gt;());
{
<span class="kw">let </span>slice = a.sub_slice([<span class="number">1</span>, <span class="number">1</span>], <span class="number">3</span>, <span class="number">2</span>);
<span class="macro">assert_eq!</span>(<span class="kw-2">&amp;</span>slice.iter().cloned().collect::&lt;Vec&lt;<span class="kw">_</span>&gt;&gt;(), <span class="kw-2">&amp;</span><span class="macro">vec!</span>[<span class="number">5</span>, <span class="number">6</span>, <span class="number">9</span>, <span class="number">10</span>, <span class="number">13</span>, <span class="number">14</span>]);
<span class="kw">let </span>slice = slice.sub_slice([<span class="number">1</span>, <span class="number">1</span>], <span class="number">2</span>, <span class="number">1</span>);
<span class="macro">assert_eq!</span>(<span class="kw-2">&amp;</span>slice.iter().cloned().collect::&lt;Vec&lt;<span class="kw">_</span>&gt;&gt;(), <span class="kw-2">&amp;</span><span class="macro">vec!</span>[<span class="number">10</span>, <span class="number">14</span>]);
}
{
<span class="kw">let </span><span class="kw-2">mut </span>slice_mut = a.sub_slice_mut([<span class="number">3</span>, <span class="number">1</span>], <span class="number">1</span>, <span class="number">1</span>);
<span class="kw">unsafe </span>{
<span class="kw-2">*</span>slice_mut.get_unchecked_mut([<span class="number">0</span>, <span class="number">0</span>]) = <span class="number">25</span>;
<span class="macro">assert_eq!</span>(<span class="kw-2">*</span>a.get_unchecked([<span class="number">3</span>, <span class="number">1</span>]), <span class="number">25</span>);
}
}
}
<span class="attribute">#[test]
</span><span class="kw">fn </span>slice_into_matrix() {
<span class="kw">let </span><span class="kw-2">mut </span>a = Matrix::ones(<span class="number">3</span>, <span class="number">3</span>) * <span class="number">2.0</span>;
{
<span class="kw">let </span>b = MatrixSlice::from_matrix(<span class="kw-2">&amp;</span>a, [<span class="number">1</span>, <span class="number">1</span>], <span class="number">2</span>, <span class="number">2</span>);
<span class="kw">let </span>c = b.into_matrix();
<span class="macro">assert_eq!</span>(c.rows(), <span class="number">2</span>);
<span class="macro">assert_eq!</span>(c.cols(), <span class="number">2</span>);
}
<span class="kw">let </span>d = MatrixSliceMut::from_matrix(<span class="kw-2">&amp;mut </span>a, [<span class="number">1</span>, <span class="number">1</span>], <span class="number">2</span>, <span class="number">2</span>);
<span class="kw">let </span>e = d.into_matrix();
<span class="macro">assert_eq!</span>(e.rows(), <span class="number">2</span>);
<span class="macro">assert_eq!</span>(e.cols(), <span class="number">2</span>);
}
<span class="attribute">#[test]
</span><span class="kw">fn </span>test_split_matrix() {
<span class="kw">let </span>a = Matrix::new(<span class="number">3</span>, <span class="number">3</span>, (<span class="number">0</span>..<span class="number">9</span>).collect::&lt;Vec&lt;<span class="kw">_</span>&gt;&gt;());
<span class="kw">let </span>(b, c) = a.split_at(<span class="number">1</span>, Axes::Row);
<span class="macro">assert_eq!</span>(b.rows(), <span class="number">1</span>);
<span class="macro">assert_eq!</span>(b.cols(), <span class="number">3</span>);
<span class="macro">assert_eq!</span>(c.rows(), <span class="number">2</span>);
<span class="macro">assert_eq!</span>(c.cols(), <span class="number">3</span>);
<span class="macro">assert_eq!</span>(b[[<span class="number">0</span>, <span class="number">0</span>]], <span class="number">0</span>);
<span class="macro">assert_eq!</span>(b[[<span class="number">0</span>, <span class="number">1</span>]], <span class="number">1</span>);
<span class="macro">assert_eq!</span>(b[[<span class="number">0</span>, <span class="number">2</span>]], <span class="number">2</span>);
<span class="macro">assert_eq!</span>(c[[<span class="number">0</span>, <span class="number">0</span>]], <span class="number">3</span>);
<span class="macro">assert_eq!</span>(c[[<span class="number">0</span>, <span class="number">1</span>]], <span class="number">4</span>);
<span class="macro">assert_eq!</span>(c[[<span class="number">0</span>, <span class="number">2</span>]], <span class="number">5</span>);
<span class="macro">assert_eq!</span>(c[[<span class="number">1</span>, <span class="number">0</span>]], <span class="number">6</span>);
<span class="macro">assert_eq!</span>(c[[<span class="number">1</span>, <span class="number">1</span>]], <span class="number">7</span>);
<span class="macro">assert_eq!</span>(c[[<span class="number">1</span>, <span class="number">2</span>]], <span class="number">8</span>);
}
<span class="attribute">#[test]
</span><span class="kw">fn </span>test_split_matrix_mut() {
<span class="kw">let </span><span class="kw-2">mut </span>a = Matrix::new(<span class="number">3</span>, <span class="number">3</span>, (<span class="number">0</span>..<span class="number">9</span>).collect::&lt;Vec&lt;<span class="kw">_</span>&gt;&gt;());
{
<span class="kw">let </span>(<span class="kw-2">mut </span>b, <span class="kw-2">mut </span>c) = a.split_at_mut(<span class="number">1</span>, Axes::Row);
<span class="macro">assert_eq!</span>(b.rows(), <span class="number">1</span>);
<span class="macro">assert_eq!</span>(b.cols(), <span class="number">3</span>);
<span class="macro">assert_eq!</span>(c.rows(), <span class="number">2</span>);
<span class="macro">assert_eq!</span>(c.cols(), <span class="number">3</span>);
<span class="macro">assert_eq!</span>(b[[<span class="number">0</span>, <span class="number">0</span>]], <span class="number">0</span>);
<span class="macro">assert_eq!</span>(b[[<span class="number">0</span>, <span class="number">1</span>]], <span class="number">1</span>);
<span class="macro">assert_eq!</span>(b[[<span class="number">0</span>, <span class="number">2</span>]], <span class="number">2</span>);
<span class="macro">assert_eq!</span>(c[[<span class="number">0</span>, <span class="number">0</span>]], <span class="number">3</span>);
<span class="macro">assert_eq!</span>(c[[<span class="number">0</span>, <span class="number">1</span>]], <span class="number">4</span>);
<span class="macro">assert_eq!</span>(c[[<span class="number">0</span>, <span class="number">2</span>]], <span class="number">5</span>);
<span class="macro">assert_eq!</span>(c[[<span class="number">1</span>, <span class="number">0</span>]], <span class="number">6</span>);
<span class="macro">assert_eq!</span>(c[[<span class="number">1</span>, <span class="number">1</span>]], <span class="number">7</span>);
<span class="macro">assert_eq!</span>(c[[<span class="number">1</span>, <span class="number">2</span>]], <span class="number">8</span>);
b[[<span class="number">0</span>, <span class="number">0</span>]] = <span class="number">4</span>;
c[[<span class="number">0</span>, <span class="number">0</span>]] = <span class="number">5</span>;
}
<span class="macro">assert_eq!</span>(a[[<span class="number">0</span>, <span class="number">0</span>]], <span class="number">4</span>);
<span class="macro">assert_eq!</span>(a[[<span class="number">0</span>, <span class="number">1</span>]], <span class="number">1</span>);
<span class="macro">assert_eq!</span>(a[[<span class="number">0</span>, <span class="number">2</span>]], <span class="number">2</span>);
<span class="macro">assert_eq!</span>(a[[<span class="number">1</span>, <span class="number">0</span>]], <span class="number">5</span>);
<span class="macro">assert_eq!</span>(a[[<span class="number">1</span>, <span class="number">1</span>]], <span class="number">4</span>);
<span class="macro">assert_eq!</span>(a[[<span class="number">1</span>, <span class="number">2</span>]], <span class="number">5</span>);
<span class="macro">assert_eq!</span>(a[[<span class="number">2</span>, <span class="number">0</span>]], <span class="number">6</span>);
<span class="macro">assert_eq!</span>(a[[<span class="number">2</span>, <span class="number">1</span>]], <span class="number">7</span>);
<span class="macro">assert_eq!</span>(a[[<span class="number">2</span>, <span class="number">2</span>]], <span class="number">8</span>);
}
<span class="attribute">#[test]
#[should_panic]
</span><span class="kw">fn </span>test_diag_iter_too_high() {
<span class="kw">let </span>a = <span class="macro">matrix!</span>[<span class="number">0.0</span>, <span class="number">1.0</span>, <span class="number">2.0</span>, <span class="number">3.0</span>;
<span class="number">4.0</span>, <span class="number">5.0</span>, <span class="number">6.0</span>, <span class="number">7.0</span>;
<span class="number">8.0</span>, <span class="number">9.0</span>, <span class="number">10.0</span>, <span class="number">11.0</span>];
<span class="kw">for _ in </span>a.diag_iter(DiagOffset::Above(<span class="number">4</span>)) {
}
}
<span class="attribute">#[test]
#[should_panic]
</span><span class="kw">fn </span>test_diag_iter_too_low() {
<span class="kw">let </span>a = <span class="macro">matrix!</span>[<span class="number">0.0</span>, <span class="number">1.0</span>, <span class="number">2.0</span>, <span class="number">3.0</span>;
<span class="number">4.0</span>, <span class="number">5.0</span>, <span class="number">6.0</span>, <span class="number">7.0</span>;
<span class="number">8.0</span>, <span class="number">9.0</span>, <span class="number">10.0</span>, <span class="number">11.0</span>];
<span class="kw">for _ in </span>a.diag_iter(DiagOffset::Below(<span class="number">3</span>)) {
}
}
<span class="attribute">#[test]
</span><span class="kw">fn </span>test_swap_rows() {
<span class="kw">let </span><span class="kw-2">mut </span>a = Matrix::new(<span class="number">4</span>, <span class="number">3</span>, (<span class="number">0</span>..<span class="number">12</span>).collect::&lt;Vec&lt;usize&gt;&gt;());
a.swap_rows(<span class="number">0</span>, <span class="number">1</span>);
<span class="macro">assert_eq!</span>(a.data(), <span class="kw-2">&amp;</span>[<span class="number">3</span>, <span class="number">4</span>, <span class="number">5</span>, <span class="number">0</span>, <span class="number">1</span>, <span class="number">2</span>, <span class="number">6</span>, <span class="number">7</span>, <span class="number">8</span>, <span class="number">9</span>, <span class="number">10</span>, <span class="number">11</span>]);
{
<span class="kw">let </span><span class="kw-2">mut </span>b = MatrixSliceMut::from_matrix(<span class="kw-2">&amp;mut </span>a, [<span class="number">0</span>, <span class="number">0</span>], <span class="number">4</span>, <span class="number">2</span>);
b.swap_rows(<span class="number">0</span>, <span class="number">1</span>);
}
<span class="macro">assert_eq!</span>(a.into_vec(), <span class="macro">vec!</span>[<span class="number">0</span>, <span class="number">1</span>, <span class="number">5</span>, <span class="number">3</span>, <span class="number">4</span>, <span class="number">2</span>, <span class="number">6</span>, <span class="number">7</span>, <span class="number">8</span>, <span class="number">9</span>, <span class="number">10</span>, <span class="number">11</span>]);
}
<span class="attribute">#[test]
</span><span class="kw">fn </span>test_matrix_swap_cols() {
<span class="kw">let </span><span class="kw-2">mut </span>a = Matrix::new(<span class="number">4</span>, <span class="number">3</span>, (<span class="number">0</span>..<span class="number">12</span>).collect::&lt;Vec&lt;usize&gt;&gt;());
a.swap_cols(<span class="number">0</span>, <span class="number">1</span>);
<span class="macro">assert_eq!</span>(a.data(), <span class="kw-2">&amp;</span>[<span class="number">1</span>, <span class="number">0</span>, <span class="number">2</span>, <span class="number">4</span>, <span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>, <span class="number">6</span>, <span class="number">8</span>, <span class="number">10</span>, <span class="number">9</span>, <span class="number">11</span>]);
{
<span class="kw">let </span><span class="kw-2">mut </span>b = MatrixSliceMut::from_matrix(<span class="kw-2">&amp;mut </span>a, [<span class="number">0</span>, <span class="number">0</span>], <span class="number">3</span>, <span class="number">3</span>);
b.swap_cols(<span class="number">0</span>, <span class="number">2</span>);
}
<span class="macro">assert_eq!</span>(a.into_vec(), <span class="macro">vec!</span>[<span class="number">2</span>, <span class="number">0</span>, <span class="number">1</span>, <span class="number">5</span>, <span class="number">3</span>, <span class="number">4</span>, <span class="number">8</span>, <span class="number">6</span>, <span class="number">7</span>, <span class="number">10</span>, <span class="number">9</span>, <span class="number">11</span>]);
}
<span class="attribute">#[test]
</span><span class="kw">fn </span>test_matrix_swap_same_rows() {
<span class="kw">let </span><span class="kw-2">mut </span>a = Matrix::new(<span class="number">4</span>, <span class="number">2</span>, (<span class="number">0</span>..<span class="number">8</span>).collect::&lt;Vec&lt;usize&gt;&gt;());
a.swap_rows(<span class="number">0</span>, <span class="number">0</span>);
<span class="macro">assert_eq!</span>(a.into_vec(), (<span class="number">0</span>..<span class="number">8</span>).collect::&lt;Vec&lt;usize&gt;&gt;());
}
<span class="attribute">#[test]
</span><span class="kw">fn </span>test_matrix_swap_same_cols() {
<span class="kw">let </span><span class="kw-2">mut </span>a = Matrix::new(<span class="number">4</span>, <span class="number">2</span>, (<span class="number">0</span>..<span class="number">8</span>).collect::&lt;Vec&lt;usize&gt;&gt;());
a.swap_cols(<span class="number">0</span>, <span class="number">0</span>);
<span class="macro">assert_eq!</span>(a.into_vec(), (<span class="number">0</span>..<span class="number">8</span>).collect::&lt;Vec&lt;usize&gt;&gt;());
}
<span class="attribute">#[test]
#[should_panic]
</span><span class="kw">fn </span>test_matrix_swap_row_high_first() {
<span class="kw">let </span><span class="kw-2">mut </span>a = Matrix::new(<span class="number">4</span>, <span class="number">2</span>, (<span class="number">0</span>..<span class="number">8</span>).collect::&lt;Vec&lt;usize&gt;&gt;());
a.swap_rows(<span class="number">5</span>, <span class="number">0</span>);
}
<span class="attribute">#[test]
#[should_panic]
</span><span class="kw">fn </span>test_matrix_swap_row_high_second() {
<span class="kw">let </span><span class="kw-2">mut </span>a = Matrix::new(<span class="number">4</span>, <span class="number">2</span>, (<span class="number">0</span>..<span class="number">8</span>).collect::&lt;Vec&lt;usize&gt;&gt;());
a.swap_rows(<span class="number">0</span>, <span class="number">5</span>);
}
<span class="attribute">#[test]
#[should_panic]
</span><span class="kw">fn </span>test_matrix_swap_col_high_first() {
<span class="kw">let </span><span class="kw-2">mut </span>a = Matrix::new(<span class="number">4</span>, <span class="number">2</span>, (<span class="number">0</span>..<span class="number">8</span>).collect::&lt;Vec&lt;usize&gt;&gt;());
a.swap_cols(<span class="number">2</span>, <span class="number">1</span>);
}
<span class="attribute">#[test]
#[should_panic]
</span><span class="kw">fn </span>test_matrix_swap_col_high_second() {
<span class="kw">let </span><span class="kw-2">mut </span>a = Matrix::new(<span class="number">4</span>, <span class="number">2</span>, (<span class="number">0</span>..<span class="number">8</span>).collect::&lt;Vec&lt;usize&gt;&gt;());
a.swap_cols(<span class="number">1</span>, <span class="number">2</span>);
}
<span class="attribute">#[test]
</span><span class="kw">fn </span>test_matrix_select_rows() {
<span class="kw">let </span>a = Matrix::new(<span class="number">4</span>, <span class="number">2</span>, (<span class="number">0</span>..<span class="number">8</span>).collect::&lt;Vec&lt;usize&gt;&gt;());
<span class="kw">let </span>b = a.select_rows(<span class="kw-2">&amp;</span>[<span class="number">0</span>, <span class="number">2</span>, <span class="number">3</span>]);
<span class="macro">assert_eq!</span>(b.into_vec(), <span class="macro">vec!</span>[<span class="number">0</span>, <span class="number">1</span>, <span class="number">4</span>, <span class="number">5</span>, <span class="number">6</span>, <span class="number">7</span>]);
}
<span class="attribute">#[test]
</span><span class="kw">fn </span>test_matrix_select_cols() {
<span class="kw">let </span>a = Matrix::new(<span class="number">4</span>, <span class="number">2</span>, (<span class="number">0</span>..<span class="number">8</span>).collect::&lt;Vec&lt;usize&gt;&gt;());
<span class="kw">let </span>b = a.select_cols(<span class="kw-2">&amp;</span>[<span class="number">1</span>]);
<span class="macro">assert_eq!</span>(b.into_vec(), <span class="macro">vec!</span>[<span class="number">1</span>, <span class="number">3</span>, <span class="number">5</span>, <span class="number">7</span>]);
}
<span class="attribute">#[test]
</span><span class="kw">fn </span>test_matrix_select() {
<span class="kw">let </span>a = Matrix::new(<span class="number">4</span>, <span class="number">2</span>, (<span class="number">0</span>..<span class="number">8</span>).collect::&lt;Vec&lt;usize&gt;&gt;());
<span class="kw">let </span>b = a.select(<span class="kw-2">&amp;</span>[<span class="number">0</span>, <span class="number">2</span>], <span class="kw-2">&amp;</span>[<span class="number">1</span>]);
<span class="macro">assert_eq!</span>(b.into_vec(), <span class="macro">vec!</span>[<span class="number">1</span>, <span class="number">5</span>]);
}
<span class="attribute">#[test]
</span><span class="kw">fn </span>matrix_diag() {
<span class="kw">let </span>a = <span class="macro">matrix!</span>[<span class="number">1.</span>, <span class="number">3.</span>, <span class="number">5.</span>;
<span class="number">2.</span>, <span class="number">4.</span>, <span class="number">7.</span>;
<span class="number">1.</span>, <span class="number">1.</span>, <span class="number">0.</span>];
<span class="kw">let </span>b = a.is_diag();
<span class="macro">assert!</span>(!b);
<span class="kw">let </span>c = <span class="macro">matrix!</span>[<span class="number">1.</span>, <span class="number">0.</span>, <span class="number">0.</span>;
<span class="number">0.</span>, <span class="number">2.</span>, <span class="number">0.</span>;
<span class="number">0.</span>, <span class="number">0.</span>, <span class="number">3.</span>];
<span class="kw">let </span>d = c.is_diag();
<span class="macro">assert!</span>(d);
}
<span class="attribute">#[test]
</span><span class="kw">fn </span>transpose_mat() {
<span class="kw">let </span>a = <span class="macro">matrix!</span>[<span class="number">1.</span>, <span class="number">2.</span>;
<span class="number">3.</span>, <span class="number">4.</span>;
<span class="number">5.</span>, <span class="number">6.</span>;
<span class="number">7.</span>, <span class="number">8.</span>;
<span class="number">9.</span>, <span class="number">10.</span>];
<span class="kw">let </span>c = a.transpose();
<span class="macro">assert_eq!</span>(c.cols(), a.rows());
<span class="macro">assert_eq!</span>(c.rows(), a.cols());
<span class="macro">assert_eq!</span>(a[[<span class="number">0</span>, <span class="number">0</span>]], c[[<span class="number">0</span>, <span class="number">0</span>]]);
<span class="macro">assert_eq!</span>(a[[<span class="number">1</span>, <span class="number">0</span>]], c[[<span class="number">0</span>, <span class="number">1</span>]]);
<span class="macro">assert_eq!</span>(a[[<span class="number">2</span>, <span class="number">0</span>]], c[[<span class="number">0</span>, <span class="number">2</span>]]);
<span class="macro">assert_eq!</span>(a[[<span class="number">3</span>, <span class="number">0</span>]], c[[<span class="number">0</span>, <span class="number">3</span>]]);
<span class="macro">assert_eq!</span>(a[[<span class="number">4</span>, <span class="number">0</span>]], c[[<span class="number">0</span>, <span class="number">4</span>]]);
<span class="macro">assert_eq!</span>(a[[<span class="number">0</span>, <span class="number">1</span>]], c[[<span class="number">1</span>, <span class="number">0</span>]]);
<span class="macro">assert_eq!</span>(a[[<span class="number">1</span>, <span class="number">1</span>]], c[[<span class="number">1</span>, <span class="number">1</span>]]);
<span class="macro">assert_eq!</span>(a[[<span class="number">2</span>, <span class="number">1</span>]], c[[<span class="number">1</span>, <span class="number">2</span>]]);
<span class="macro">assert_eq!</span>(a[[<span class="number">3</span>, <span class="number">1</span>]], c[[<span class="number">1</span>, <span class="number">3</span>]]);
<span class="macro">assert_eq!</span>(a[[<span class="number">4</span>, <span class="number">1</span>]], c[[<span class="number">1</span>, <span class="number">4</span>]]);
}
}
</code></pre></div>
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