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diff --git a/libs/sort/doc/html/sort/sort_hpp/integer_sort.html b/libs/sort/doc/html/sort/sort_hpp/integer_sort.html new file mode 100644 index 000000000..1ff2552ce --- /dev/null +++ b/libs/sort/doc/html/sort/sort_hpp/integer_sort.html @@ -0,0 +1,92 @@ +<html> +<head> +<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII"> +<title>Integer Sort</title> +<link rel="stylesheet" href="../../../../../../doc/src/boostbook.css" type="text/css"> +<meta name="generator" content="DocBook XSL Stylesheets V1.78.1"> +<link rel="home" href="../../index.html" title="Boost.Sort"> +<link rel="up" href="../sort_hpp.html" title="Spreadsort"> +<link rel="prev" href="../sort_hpp.html" title="Spreadsort"> +<link rel="next" href="float_sort.html" title="Float Sort"> +</head> +<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"> +<table cellpadding="2" width="100%"><tr> +<td valign="top"><img alt="Boost C++ Libraries" width="277" height="86" src="../../../../../../boost.png"></td> +<td align="center"><a href="../../../../../../index.html">Home</a></td> +<td align="center"><a href="../../../../../../libs/libraries.htm">Libraries</a></td> +<td align="center"><a href="http://www.boost.org/users/people.html">People</a></td> +<td align="center"><a href="http://www.boost.org/users/faq.html">FAQ</a></td> +<td align="center"><a href="../../../../../../more/index.htm">More</a></td> +</tr></table> +<hr> +<div class="spirit-nav"> +<a accesskey="p" href="../sort_hpp.html"><img src="../../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../sort_hpp.html"><img src="../../../../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../../index.html"><img src="../../../../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="float_sort.html"><img src="../../../../../../doc/src/images/next.png" alt="Next"></a> +</div> +<div class="section"> +<div class="titlepage"><div><div><h3 class="title"> +<a name="sort.sort_hpp.integer_sort"></a><a class="link" href="integer_sort.html" title="Integer Sort">Integer Sort</a> +</h3></div></div></div> +<p> + <code class="literal"><code class="computeroutput"><a class="link" href="../../boost/sort/spreadsort/integer_sort_idp41299456.html" title="Function template integer_sort">integer_sort</a></code></code> + is a fast templated in-place hybrid radix/comparison algorithm, which in + testing tends to be roughly 50% to 2X faster than <a href="http://en.cppreference.com/w/cpp/algorithm/sort" target="_top">std::sort</a> + for large tests (>=100kB). Worst-case performance is <span class="emphasis"><em>𝑶(N * (log2(range)/s + + s))</em></span>, so <code class="literal"><code class="computeroutput"><a class="link" href="../../boost/sort/spreadsort/integer_sort_idp41299456.html" title="Function template integer_sort">integer_sort</a></code></code> + is asymptotically faster than pure comparison-based algorithms. <span class="emphasis"><em>s</em></span> + is <span class="emphasis"><em>max_splits</em></span>, which defaults to 11, so its worst-case + with default settings for 32-bit integers is <span class="emphasis"><em>𝑶(N * ((32/11)</em></span> + slow radix-based iterations + 11 fast comparison-based iterations). + </p> +<p> + Some performance plots of runtime vs. n and log2(range) are provided below: + </p> +<p> + <a href="../../../../doc/graph/windows_integer_sort.htm" target="_top">Windows Integer Sort</a> + </p> +<p> + <a href="../../../../doc/graph/osx_integer_sort.htm" target="_top">OSX integer Sort</a> + </p> +<div class="section"> +<div class="titlepage"><div><div><h4 class="title"> +<a name="sort.sort_hpp.integer_sort.integersort_examples"></a><a class="link" href="integer_sort.html#sort.sort_hpp.integer_sort.integersort_examples" title="Integer Sort Examples">Integer + Sort Examples</a> +</h4></div></div></div> +<p> + See <a href="../../../../example/rightshiftsample.cpp" target="_top">rightshiftsample.cpp</a> + for a working example of using rightshift, using a user-defined functor: + </p> +<pre class="programlisting"><span class="keyword">struct</span> <span class="identifier">rightshift</span> <span class="special">{</span> + <span class="keyword">inline</span> <span class="keyword">int</span> <span class="keyword">operator</span><span class="special">()(</span><span class="identifier">DATA_TYPE</span> <span class="identifier">x</span><span class="special">,</span> <span class="keyword">unsigned</span> <span class="identifier">offset</span><span class="special">)</span> <span class="special">{</span> <span class="keyword">return</span> <span class="identifier">x</span> <span class="special">>></span> <span class="identifier">offset</span><span class="special">;</span> <span class="special">}</span> +<span class="special">};</span> +</pre> +<p> + Other examples: + </p> +<p> + <a href="../../../../example/keyplusdatasample.cpp" target="_top">Sort structs using an + integer key.</a> + </p> +<p> + <a href="../../../../example/reverseintsample.cpp" target="_top">Sort integers in reverse + order.</a> + </p> +<p> + <a href="../../../../example/mostlysorted.cpp" target="_top">Simple sorting of integers; + this case is a performance test for integers that are already mostly sorted.</a> + </p> +</div> +</div> +<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> +<td align="left"></td> +<td align="right"><div class="copyright-footer">Copyright © 2014 Steven Ross<p> + Distributed under the <a href="http://boost.org/LICENSE_1_0.txt" target="_top">Boost + Software License, Version 1.0</a>. + </p> +</div></td> +</tr></table> +<hr> +<div class="spirit-nav"> +<a accesskey="p" href="../sort_hpp.html"><img src="../../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../sort_hpp.html"><img src="../../../../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../../index.html"><img src="../../../../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="float_sort.html"><img src="../../../../../../doc/src/images/next.png" alt="Next"></a> +</div> +</body> +</html> |