diff options
Diffstat (limited to 'libs/sort/doc/html/sort/sort_hpp/rationale/lookup.html')
-rw-r--r-- | libs/sort/doc/html/sort/sort_hpp/rationale/lookup.html | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/libs/sort/doc/html/sort/sort_hpp/rationale/lookup.html b/libs/sort/doc/html/sort/sort_hpp/rationale/lookup.html new file mode 100644 index 000000000..b19c31e4e --- /dev/null +++ b/libs/sort/doc/html/sort/sort_hpp/rationale/lookup.html @@ -0,0 +1,55 @@ +<html> +<head> +<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII"> +<title>Lookup Table?</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="../rationale.html" title="Rationale"> +<link rel="prev" href="optimization.html" title="Unused X86 optimization"> +<link rel="next" href="../../definitions.html" title="Definitions"> +</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="optimization.html"><img src="../../../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../rationale.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="../../definitions.html"><img src="../../../../../../../doc/src/images/next.png" alt="Next"></a> +</div> +<div class="section"> +<div class="titlepage"><div><div><h4 class="title"> +<a name="sort.sort_hpp.rationale.lookup"></a><a class="link" href="lookup.html" title="Lookup Table?">Lookup Table?</a> +</h4></div></div></div> +<p> + The ideal way to optimize the constants would be to have a carefully-tuned + lookup-table instead of the <code class="computeroutput"><span class="identifier">get_max_count</span></code> + function, but 4 tuning variables is simpler, <code class="computeroutput"><span class="identifier">get_max_count</span></code> + enforces worst-case performance minimization rules, and such a lookup table + would be difficult to optimize for cross-platform performance. + </p> +<p> + Alternatively, <code class="computeroutput"><span class="identifier">get_max_count</span></code> + could be used to generate a static lookup table. This hasn't been done + due to concerns about cross-platform compatibility and flexibility. + </p> +</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="optimization.html"><img src="../../../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../rationale.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="../../definitions.html"><img src="../../../../../../../doc/src/images/next.png" alt="Next"></a> +</div> +</body> +</html> |