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<div class="refentry" title="Class date_duration">
<a name="boost.gregorian.date_duration"></a><div class="titlepage"></div>
<div class="refnamediv">
<h2><span class="refentrytitle">Class date_duration</span></h2>
<p>boost::gregorian::date_duration — Durations in days for gregorian system. </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="emphasis"><em>// In header: <<a class="link" href="../../date_time/doxy.html#header.boost.date_time.gregorian.greg_duration_hpp" title="Header <boost/date_time/gregorian/greg_duration.hpp>">boost/date_time/gregorian/greg_duration.hpp</a>>
</em></span>
<span class="bold"><strong>class</strong></span> <a class="link" href="date_duration.html" title="Class date_duration">date_duration</a> {
<span class="bold"><strong>public</strong></span>:
<span class="emphasis"><em>// types</em></span>
<span class="bold"><strong>typedef</strong></span> base_type::duration_rep <a name="boost.gregorian.date_duration.duration_rep"></a>duration_rep;
<span class="emphasis"><em>// <a class="link" href="date_duration.html#boost.gregorian.date_durationconstruct-copy-destruct">construct/copy/destruct</a></em></span>
<a class="link" href="date_duration.html#id385683-bb">date_duration</a>(duration_rep = 0);
<a class="link" href="date_duration.html#id332394-bb">date_duration</a>(date_time::special_values);
<a class="link" href="date_duration.html#id372300-bb">date_duration</a>(<span class="bold"><strong>const</strong></span> <a class="link" href="date_duration.html" title="Class date_duration">date_duration</a> &);
<a class="link" href="date_duration.html#id596769-bb">date_duration</a>(<span class="bold"><strong>const</strong></span> base_type &);
<span class="emphasis"><em>// <a class="link" href="date_duration.html#id349671-bb">public member functions</a></em></span>
<span class="type"><span class="bold"><strong>bool</strong></span></span> <a class="link" href="date_duration.html#id349675-bb"><span class="bold"><strong>operator</strong></span>==</a>(<span class="bold"><strong>const</strong></span> <a class="link" href="date_duration.html" title="Class date_duration">date_duration</a> &) <span class="bold"><strong>const</strong></span>;
<span class="type"><span class="bold"><strong>bool</strong></span></span> <a class="link" href="date_duration.html#id358110-bb"><span class="bold"><strong>operator</strong></span>!=</a>(<span class="bold"><strong>const</strong></span> <a class="link" href="date_duration.html" title="Class date_duration">date_duration</a> &) <span class="bold"><strong>const</strong></span>;
<span class="type"><span class="bold"><strong>bool</strong></span></span> <a class="link" href="date_duration.html#id573294-bb"><span class="bold"><strong>operator</strong></span><</a>(<span class="bold"><strong>const</strong></span> <a class="link" href="date_duration.html" title="Class date_duration">date_duration</a> &) <span class="bold"><strong>const</strong></span>;
<span class="type"><span class="bold"><strong>bool</strong></span></span> <a class="link" href="date_duration.html#id573312-bb"><span class="bold"><strong>operator</strong></span>></a>(<span class="bold"><strong>const</strong></span> <a class="link" href="date_duration.html" title="Class date_duration">date_duration</a> &) <span class="bold"><strong>const</strong></span>;
<span class="type"><span class="bold"><strong>bool</strong></span></span> <a class="link" href="date_duration.html#id573329-bb"><span class="bold"><strong>operator</strong></span><=</a>(<span class="bold"><strong>const</strong></span> <a class="link" href="date_duration.html" title="Class date_duration">date_duration</a> &) <span class="bold"><strong>const</strong></span>;
<span class="type"><span class="bold"><strong>bool</strong></span></span> <a class="link" href="date_duration.html#id580114-bb"><span class="bold"><strong>operator</strong></span>>=</a>(<span class="bold"><strong>const</strong></span> <a class="link" href="date_duration.html" title="Class date_duration">date_duration</a> &) <span class="bold"><strong>const</strong></span>;
<span class="type"><a class="link" href="date_duration.html" title="Class date_duration">date_duration</a> &</span> <a class="link" href="date_duration.html#id373290-bb"><span class="bold"><strong>operator</strong></span>-=</a>(<span class="bold"><strong>const</strong></span> <a class="link" href="date_duration.html" title="Class date_duration">date_duration</a> &) ;
<span class="type"><a class="link" href="date_duration.html" title="Class date_duration">date_duration</a> &</span> <a class="link" href="date_duration.html#id401405-bb"><span class="bold"><strong>operator</strong></span>+=</a>(<span class="bold"><strong>const</strong></span> <a class="link" href="date_duration.html" title="Class date_duration">date_duration</a> &) ;
<span class="type"><a class="link" href="date_duration.html" title="Class date_duration">date_duration</a></span> <a class="link" href="date_duration.html#id581270-bb"><span class="bold"><strong>operator</strong></span>-</a>() <span class="bold"><strong>const</strong></span>;
<span class="type"><a class="link" href="date_duration.html" title="Class date_duration">date_duration</a> &</span> <a class="link" href="date_duration.html#id367551-bb"><span class="bold"><strong>operator</strong></span>/=</a>(<span class="bold"><strong>int</strong></span>) ;
<span class="emphasis"><em>// <a class="link" href="date_duration.html#id596778-bb">public static functions</a></em></span>
<span class="type"><span class="bold"><strong>static</strong></span> <a class="link" href="date_duration.html" title="Class date_duration">date_duration</a></span> <a class="link" href="date_duration.html#id596782-bb">unit</a>() ;
};</pre></div>
<div class="refsect1" title="Description">
<a name="id838502"></a><h2>Description</h2>
<div class="refsect2" title="date_duration public construct/copy/destruct">
<a name="id838506"></a><h3>
<a name="boost.gregorian.date_durationconstruct-copy-destruct"></a><code class="computeroutput">date_duration</code>
public
construct/copy/destruct</h3>
<div class="orderedlist"><ol class="orderedlist" type="1">
<li class="listitem">
<pre class="literallayout"><a name="id385683-bb"></a>date_duration(duration_rep day_count = 0);</pre>Construct from a day count. </li>
<li class="listitem">
<pre class="literallayout"><a name="id332394-bb"></a>date_duration(date_time::special_values sv);</pre>construct from special_values </li>
<li class="listitem">
<pre class="literallayout"><a name="id372300-bb"></a>date_duration(<span class="bold"><strong>const</strong></span> <a class="link" href="date_duration.html" title="Class date_duration">date_duration</a> & other);</pre>Copy constructor. </li>
<li class="listitem">
<pre class="literallayout"><a name="id596769-bb"></a>date_duration(<span class="bold"><strong>const</strong></span> base_type & other);</pre>Construct from another date_duration. </li>
</ol></div>
</div>
<div class="refsect2" title="date_duration public member functions">
<a name="id838877"></a><h3>
<a name="id349671-bb"></a><code class="computeroutput">date_duration</code> public member functions</h3>
<div class="orderedlist"><ol class="orderedlist" type="1">
<li class="listitem"><pre class="literallayout"><span class="type"><span class="bold"><strong>bool</strong></span></span> <a name="id349675-bb"></a><span class="bold"><strong>operator</strong></span>==(<span class="bold"><strong>const</strong></span> <a class="link" href="date_duration.html" title="Class date_duration">date_duration</a> & rhs) <span class="bold"><strong>const</strong></span>;</pre></li>
<li class="listitem"><pre class="literallayout"><span class="type"><span class="bold"><strong>bool</strong></span></span> <a name="id358110-bb"></a><span class="bold"><strong>operator</strong></span>!=(<span class="bold"><strong>const</strong></span> <a class="link" href="date_duration.html" title="Class date_duration">date_duration</a> & rhs) <span class="bold"><strong>const</strong></span>;</pre></li>
<li class="listitem"><pre class="literallayout"><span class="type"><span class="bold"><strong>bool</strong></span></span> <a name="id573294-bb"></a><span class="bold"><strong>operator</strong></span><(<span class="bold"><strong>const</strong></span> <a class="link" href="date_duration.html" title="Class date_duration">date_duration</a> & rhs) <span class="bold"><strong>const</strong></span>;</pre></li>
<li class="listitem"><pre class="literallayout"><span class="type"><span class="bold"><strong>bool</strong></span></span> <a name="id573312-bb"></a><span class="bold"><strong>operator</strong></span>>(<span class="bold"><strong>const</strong></span> <a class="link" href="date_duration.html" title="Class date_duration">date_duration</a> & rhs) <span class="bold"><strong>const</strong></span>;</pre></li>
<li class="listitem"><pre class="literallayout"><span class="type"><span class="bold"><strong>bool</strong></span></span> <a name="id573329-bb"></a><span class="bold"><strong>operator</strong></span><=(<span class="bold"><strong>const</strong></span> <a class="link" href="date_duration.html" title="Class date_duration">date_duration</a> & rhs) <span class="bold"><strong>const</strong></span>;</pre></li>
<li class="listitem"><pre class="literallayout"><span class="type"><span class="bold"><strong>bool</strong></span></span> <a name="id580114-bb"></a><span class="bold"><strong>operator</strong></span>>=(<span class="bold"><strong>const</strong></span> <a class="link" href="date_duration.html" title="Class date_duration">date_duration</a> & rhs) <span class="bold"><strong>const</strong></span>;</pre></li>
<li class="listitem">
<pre class="literallayout"><span class="type"><a class="link" href="date_duration.html" title="Class date_duration">date_duration</a> &</span> <a name="id373290-bb"></a><span class="bold"><strong>operator</strong></span>-=(<span class="bold"><strong>const</strong></span> <a class="link" href="date_duration.html" title="Class date_duration">date_duration</a> & rhs) ;</pre>Subtract another duration -- result is signed. </li>
<li class="listitem">
<pre class="literallayout"><span class="type"><a class="link" href="date_duration.html" title="Class date_duration">date_duration</a> &</span> <a name="id401405-bb"></a><span class="bold"><strong>operator</strong></span>+=(<span class="bold"><strong>const</strong></span> <a class="link" href="date_duration.html" title="Class date_duration">date_duration</a> & rhs) ;</pre>Add a duration -- result is signed. </li>
<li class="listitem">
<pre class="literallayout"><span class="type"><a class="link" href="date_duration.html" title="Class date_duration">date_duration</a></span> <a name="id581270-bb"></a><span class="bold"><strong>operator</strong></span>-() <span class="bold"><strong>const</strong></span>;</pre>unary- Allows for dd = -date_duration(2); -> dd == -2 </li>
<li class="listitem">
<pre class="literallayout"><span class="type"><a class="link" href="date_duration.html" title="Class date_duration">date_duration</a> &</span> <a name="id367551-bb"></a><span class="bold"><strong>operator</strong></span>/=(<span class="bold"><strong>int</strong></span> divisor) ;</pre>Division operations on a duration with an integer. </li>
</ol></div>
</div>
<div class="refsect2" title="date_duration public static functions">
<a name="id839309"></a><h3>
<a name="id596778-bb"></a><code class="computeroutput">date_duration</code> public static functions</h3>
<div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem">
<pre class="literallayout"><span class="type"><span class="bold"><strong>static</strong></span> <a class="link" href="date_duration.html" title="Class date_duration">date_duration</a></span> <a name="id596782-bb"></a>unit() ;</pre>Returns the smallest duration -- used by to calculate 'end'. </li></ol></div>
</div>
</div>
</div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
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<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>
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