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Boost library as in https://sourceforge.net/projects/boost/files/boost/1.57.0/

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<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=windows-1252"> <meta name="GENERATOR" content="Microsoft FrontPage 5.0"> <meta name="ProgId" content="FrontPage.Editor.Document"> <title>Boost Timer Library</title> <style type="text/css"> ins {background-color:#A0FFA0} del {background-color:#FFA0A0} body { font-family: sans-serif; max-width : 8.5in; margin: 1em; } </style> </head> <body> <table border="0" cellpadding="5" cellspacing="0" style="border-collapse: collapse" bordercolor="#111111" width="750"> <tr> <td width="300"> <a href="../../../index.htm"> <img src="../../../boost.png" alt="boost.png (6897 bytes)" align="middle" width="300" height="86" border="0"></a></td> <td align="middle" width="430"> <font size="7">Timer Library<br> Version 2</font> </td> </tr> </table> <table border="0" cellpadding="5" cellspacing="0" style="border-collapse: collapse" bordercolor="#111111" bgcolor="#D7EEFF" width="100%"> <tr> <td><a href="index.html">Timer Home</a> &nbsp;&nbsp; <a href="cpu_timers.html">CPU timers</a> &nbsp;&nbsp; <a href="original_timer.html">Original timers</a> &nbsp;&nbsp; </td> </tr> </table> <p>&quot;How long does my C++ code take to run?&quot;<p>The Boost Timer library answers that question and does so portably, with as little as one #include and one additional line of code.<p>The Boost Timer library has two distinct sets of components:<ul> <li>If you are new to the library, please go directly to the version 2 <a href="cpu_timers.html">CPU timers</a> page.</li> <li>If you are interested in the original library, now deprecated, read on below.</li> </ul> <h2> <a href="cpu_timers.html">CPU timers</a></h2> <p>These version 2 components conform to current Boost practice:</p> <ul> <li>The interfaces and their semantics are the same across all platforms.</li> <li>The internal implementation uses operating system specific APIs to achieve higher precision and supply functionality not otherwise available.&nbsp; </li> <li>The headers live in a sub-directory, <code>&lt;boost/timer/...&gt;</code>.</li> <li>The content is in a sub-namespace, <code>boost::timer</code>.</li> </ul> <h2 dir="ltr"> <a href="original_timer.html">Original timers</a></h2> <p>These version 1 components are deprecated. They date from the earliest days of Boost and do not conform to current Boost practice:</p> <ul> <li>The interfaces are the same across all platforms, but the semantics differ according to platform. Wall-clock time is measured on Windows, while CPU time is measured on POSIX-like systems.</li> <li>The internal implementation uses only C/C++ standard library functions, so cannot supply desirable precision and functionality.</li> <li>The headers live in the main Boost header directory.</li> <li>The content are in namespace <code>boost</code>.</li> </ul> <hr> <p><font size="2">Revised: <!--webbot bot="Timestamp" s-type="EDITED" s-format="%d %B %Y" startspan -->07 October 2011<!--webbot bot="Timestamp" endspan i-checksum="32191" --></font></p> <p><font size="2">� Copyright Beman Dawes&nbsp; 2001, 2011</font></p> <p><font size="2">Distributed under the Boost Software License, Version 1.0. See </font> <a href="http://www.boost.org/LICENSE_1_0.txt"><font size="2">www.boost.org/LICENSE_1_0.txt</font></a></p> </body> </html>