<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=US-ASCII"> <title>Class template subsecond_duration</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="The Boost C++ Libraries BoostBook Documentation Subset"> <link rel="up" href="../../date_time/doxy.html#header.boost.date_time.time_duration_hpp" title="Header <boost/date_time/time_duration.hpp>"> <link rel="prev" href="second_clock.html" title="Class template second_clock"> <link rel="next" href="time_duration.html" title="Class template time_duration"> </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="second_clock.html"><img src="../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../../date_time/doxy.html#header.boost.date_time.time_duration_hpp"><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="time_duration.html"><img src="../../../../doc/src/images/next.png" alt="Next"></a> </div> <div class="refentry"> <a name="boost.date_time.subsecond_duration"></a><div class="titlepage"></div> <div class="refnamediv"> <h2><span class="refentrytitle">Class template subsecond_duration</span></h2> <p>boost::date_time::subsecond_duration — Template for instantiating derived adjusting durations. </p> </div> <h2 xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv-title">Synopsis</h2> <div xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv"><pre class="synopsis"><span class="comment">// In header: <<a class="link" href="../../date_time/doxy.html#header.boost.date_time.time_duration_hpp" title="Header <boost/date_time/time_duration.hpp>">boost/date_time/time_duration.hpp</a>> </span><span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> base_duration<span class="special">,</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">int64_t</span> frac_of_second<span class="special">></span> <span class="keyword">class</span> <a class="link" href="subsecond_duration.html" title="Class template subsecond_duration">subsecond_duration</a> <span class="special">:</span> <span class="keyword">public</span> <span class="identifier">base_duration</span> <span class="special">{</span> <span class="keyword">public</span><span class="special">:</span> <span class="comment">// types</span> <span class="keyword">typedef</span> <span class="identifier">base_duration</span><span class="special">::</span><span class="identifier">impl_type</span> <a name="boost.date_time.subsecond_duration.impl_type"></a><span class="identifier">impl_type</span><span class="special">;</span> <span class="keyword">typedef</span> <span class="identifier">base_duration</span><span class="special">::</span><span class="identifier">traits_type</span> <a name="boost.date_time.subsecond_duration.traits_type"></a><span class="identifier">traits_type</span><span class="special">;</span> <span class="comment">// <a class="link" href="subsecond_duration.html#boost.date_time.subsecond_durationconstruct-copy-destruct">construct/copy/destruct</a></span> <span class="keyword">explicit</span> <a class="link" href="subsecond_duration.html#idm45507086497408-bb"><span class="identifier">subsecond_duration</span></a><span class="special">(</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">int64_t</span><span class="special">)</span><span class="special">;</span> <span class="comment">// <a class="link" href="subsecond_duration.html#idm45507154879648-bb">private member functions</a></span> <a class="link" href="subsecond_duration.html#idm45507091476784-bb"><span class="identifier">BOOST_STATIC_ASSERT_MSG</span></a><span class="special">(</span><span class="special">(</span><span class="identifier">traits_type</span><span class="special">::</span><span class="identifier">ticks_per_second</span> <span class="special">>=</span><span class="identifier">frac_of_second</span><span class="special">?</span><span class="identifier">traits_type</span><span class="special">::</span><span class="identifier">ticks_per_second</span><span class="special">%</span><span class="identifier">frac_of_second</span><span class="special">:</span><span class="identifier">frac_of_second</span><span class="special">%</span><span class="identifier">traits_type</span><span class="special">::</span><span class="identifier">ticks_per_second</span><span class="special">)</span> <span class="special">=</span> <span class="special">=</span><span class="number">0</span><span class="special">,</span> \<span class="string">"The base duration resolution must be a multiple of the subsecond duration resolution"</span><span class="special">)</span><span class="special">;</span> <a class="link" href="subsecond_duration.html#idm45507091474336-bb"><span class="identifier">BOOST_STATIC_CONSTANT</span></a><span class="special">(</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">int64_t</span><span class="special">,</span> <span class="identifier">adjustment_ratio</span> <span class="special">=</span> <span class="special">(</span><span class="identifier">traits_type</span><span class="special">::</span><span class="identifier">ticks_per_second</span> <span class="special">>=</span><span class="identifier">frac_of_second</span><span class="special">?</span><span class="identifier">traits_type</span><span class="special">::</span><span class="identifier">ticks_per_second</span><span class="special">/</span><span class="identifier">frac_of_second</span><span class="special">:</span><span class="identifier">frac_of_second</span><span class="special">/</span><span class="identifier">traits_type</span><span class="special">::</span><span class="identifier">ticks_per_second</span><span class="special">)</span><span class="special">)</span><span class="special">;</span> <span class="special">}</span><span class="special">;</span></pre></div> <div class="refsect1"> <a name="idm45555365007184"></a><h2>Description</h2> <div class="refsect2"> <a name="idm45555365006768"></a><h3> <a name="boost.date_time.subsecond_durationconstruct-copy-destruct"></a><code class="computeroutput">subsecond_duration</code> public construct/copy/destruct</h3> <div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem"><pre class="literallayout"><span class="keyword">explicit</span> <a name="idm45507086497408-bb"></a><span class="identifier">subsecond_duration</span><span class="special">(</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">int64_t</span> ss<span class="special">)</span><span class="special">;</span></pre></li></ol></div> </div> <div class="refsect2"> <a name="idm45555364998208"></a><h3> <a name="idm45507154879648-bb"></a><code class="computeroutput">subsecond_duration</code> private member functions</h3> <div class="orderedlist"><ol class="orderedlist" type="1"> <li class="listitem"><pre class="literallayout"> <a name="idm45507091476784-bb"></a><span class="identifier">BOOST_STATIC_ASSERT_MSG</span><span class="special">(</span><span class="special">(</span><span class="identifier">traits_type</span><span class="special">::</span><span class="identifier">ticks_per_second</span> <span class="special">>=</span><span class="identifier">frac_of_second</span><span class="special">?</span><span class="identifier">traits_type</span><span class="special">::</span><span class="identifier">ticks_per_second</span><span class="special">%</span><span class="identifier">frac_of_second</span><span class="special">:</span><span class="identifier">frac_of_second</span><span class="special">%</span><span class="identifier">traits_type</span><span class="special">::</span><span class="identifier">ticks_per_second</span><span class="special">)</span> <span class="special">=</span> <span class="special">=</span><span class="number">0</span><span class="special">,</span> \<span class="string">"The base duration resolution must be a multiple of the subsecond duration resolution"</span><span class="special">)</span><span class="special">;</span></pre></li> <li class="listitem"><pre class="literallayout"> <a name="idm45507091474336-bb"></a><span class="identifier">BOOST_STATIC_CONSTANT</span><span class="special">(</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">int64_t</span><span class="special">,</span> <span class="identifier">adjustment_ratio</span> <span class="special">=</span> <span class="special">(</span><span class="identifier">traits_type</span><span class="special">::</span><span class="identifier">ticks_per_second</span> <span class="special">>=</span><span class="identifier">frac_of_second</span><span class="special">?</span><span class="identifier">traits_type</span><span class="special">::</span><span class="identifier">ticks_per_second</span><span class="special">/</span><span class="identifier">frac_of_second</span><span class="special">:</span><span class="identifier">frac_of_second</span><span class="special">/</span><span class="identifier">traits_type</span><span class="special">::</span><span class="identifier">ticks_per_second</span><span class="special">)</span><span class="special">)</span><span class="special">;</span></pre></li> </ol></div> </div> </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 © 2001-2005 CrystalClear Software, Inc<p>Subject to the Boost Software License, Version 1.0. (See accompanying file <code class="filename">LICENSE_1_0.txt</code> or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)</p> </div></td> </tr></table> <hr> <div class="spirit-nav"> <a accesskey="p" href="second_clock.html"><img src="../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../../date_time/doxy.html#header.boost.date_time.time_duration_hpp"><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="time_duration.html"><img src="../../../../doc/src/images/next.png" alt="Next"></a> </div> </body> </html>