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| <a name="boost.date_time.date_duration"></a><div class="titlepage"></div> |
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| <h2><span class="refentrytitle">Class template date_duration</span></h2> |
| <p>boost::date_time::date_duration — Duration type with date level resolution. </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.date_duration_hpp" title="Header <boost/date_time/date_duration.hpp>">boost/date_time/date_duration.hpp</a>> |
| |
| </span><span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> duration_rep_traits<span class="special">></span> |
| <span class="keyword">class</span> <a class="link" href="date_duration.html" title="Class template date_duration">date_duration</a> <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">duration_rep_traits</span><span class="special">::</span><span class="identifier">int_type</span> <a name="boost.date_time.date_duration.duration_rep_type"></a><span class="identifier">duration_rep_type</span><span class="special">;</span> |
| <span class="keyword">typedef</span> <span class="identifier">duration_rep_traits</span><span class="special">::</span><span class="identifier">impl_type</span> <a name="boost.date_time.date_duration.duration_rep"></a><span class="identifier">duration_rep</span><span class="special">;</span> |
| |
| <span class="comment">// <a class="link" href="date_duration.html#boost.date_time.date_durationconstruct-copy-destruct">construct/copy/destruct</a></span> |
| <a class="link" href="date_duration.html#id582977-bb"><span class="identifier">date_duration</span></a><span class="special">(</span><span class="identifier">duration_rep</span><span class="special">)</span><span class="special">;</span> |
| <a class="link" href="date_duration.html#id582987-bb"><span class="identifier">date_duration</span></a><span class="special">(</span><span class="identifier">special_values</span><span class="special">)</span><span class="special">;</span> |
| <a class="link" href="date_duration.html#id372177-bb"><span class="identifier">date_duration</span></a><span class="special">(</span><span class="keyword">const</span> <a class="link" href="date_duration.html" title="Class template date_duration">date_duration</a><span class="special"><</span> <span class="identifier">duration_rep_traits</span> <span class="special">></span> <span class="special">&</span><span class="special">)</span><span class="special">;</span> |
| |
| <span class="comment">// <a class="link" href="date_duration.html#id599260-bb">public member functions</a></span> |
| <span class="identifier">duration_rep</span> <a class="link" href="date_duration.html#id599264-bb"><span class="identifier">get_rep</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span> |
| <span class="keyword">bool</span> <a class="link" href="date_duration.html#id599275-bb"><span class="identifier">is_special</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span> |
| <span class="identifier">duration_rep_type</span> <a class="link" href="date_duration.html#id599282-bb"><span class="identifier">days</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span> |
| <span class="keyword">bool</span> <a class="link" href="date_duration.html#id599293-bb"><span class="keyword">operator</span><span class="special">==</span></a><span class="special">(</span><span class="keyword">const</span> <a class="link" href="date_duration.html" title="Class template date_duration">date_duration</a> <span class="special">&</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span> |
| <span class="keyword">bool</span> <a class="link" href="date_duration.html#id599313-bb"><span class="keyword">operator</span><span class="special"><</span></a><span class="special">(</span><span class="keyword">const</span> <a class="link" href="date_duration.html" title="Class template date_duration">date_duration</a> <span class="special">&</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span> |
| <a class="link" href="date_duration.html" title="Class template date_duration">date_duration</a> <span class="special">&</span> <a class="link" href="date_duration.html#id599332-bb"><span class="keyword">operator</span><span class="special">-=</span></a><span class="special">(</span><span class="keyword">const</span> <a class="link" href="date_duration.html" title="Class template date_duration">date_duration</a> <span class="special">&</span><span class="special">)</span><span class="special">;</span> |
| <a class="link" href="date_duration.html" title="Class template date_duration">date_duration</a> <span class="special">&</span> <a class="link" href="date_duration.html#id599355-bb"><span class="keyword">operator</span><span class="special">+=</span></a><span class="special">(</span><span class="keyword">const</span> <a class="link" href="date_duration.html" title="Class template date_duration">date_duration</a> <span class="special">&</span><span class="special">)</span><span class="special">;</span> |
| <a class="link" href="date_duration.html" title="Class template date_duration">date_duration</a> <a class="link" href="date_duration.html#id433366-bb"><span class="keyword">operator</span><span class="special">-</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span> |
| <a class="link" href="date_duration.html" title="Class template date_duration">date_duration</a> <span class="special">&</span> <a class="link" href="date_duration.html#id582948-bb"><span class="keyword">operator</span><span class="special">/=</span></a><span class="special">(</span><span class="keyword">int</span><span class="special">)</span><span class="special">;</span> |
| <span class="keyword">bool</span> <a class="link" href="date_duration.html#id582967-bb"><span class="identifier">is_negative</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span> |
| |
| <span class="comment">// <a class="link" href="date_duration.html#id319721-bb">public static functions</a></span> |
| <span class="keyword">static</span> <a class="link" href="date_duration.html" title="Class template date_duration">date_duration</a> <a class="link" href="date_duration.html#id319725-bb"><span class="identifier">unit</span></a><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="id1067146"></a><h2>Description</h2> |
| <div class="refsect2"> |
| <a name="id1067149"></a><h3> |
| <a name="boost.date_time.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="id582977-bb"></a><span class="identifier">date_duration</span><span class="special">(</span><span class="identifier">duration_rep</span> day_count<span class="special">)</span><span class="special">;</span></pre>Construct from a day count. </li> |
| <li class="listitem"> |
| <pre class="literallayout"><a name="id582987-bb"></a><span class="identifier">date_duration</span><span class="special">(</span><span class="identifier">special_values</span> sv<span class="special">)</span><span class="special">;</span></pre> |
| <p>construct from special_values - only works when instantiated with duration_traits_adapted </p> |
| </li> |
| <li class="listitem"> |
| <pre class="literallayout"><a name="id372177-bb"></a><span class="identifier">date_duration</span><span class="special">(</span><span class="keyword">const</span> <a class="link" href="date_duration.html" title="Class template date_duration">date_duration</a><span class="special"><</span> <span class="identifier">duration_rep_traits</span> <span class="special">></span> <span class="special">&</span> other<span class="special">)</span><span class="special">;</span></pre>Construct from another date_duration (Copy Constructor). </li> |
| </ol></div> |
| </div> |
| <div class="refsect2"> |
| <a name="id1067311"></a><h3> |
| <a name="id599260-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="identifier">duration_rep</span> <a name="id599264-bb"></a><span class="identifier">get_rep</span><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>returns days_ as it's instantiated type - used for streaming </li> |
| <li class="listitem"><pre class="literallayout"><span class="keyword">bool</span> <a name="id599275-bb"></a><span class="identifier">is_special</span><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre></li> |
| <li class="listitem"> |
| <pre class="literallayout"><span class="identifier">duration_rep_type</span> <a name="id599282-bb"></a><span class="identifier">days</span><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>returns days as value, not object. </li> |
| <li class="listitem"> |
| <pre class="literallayout"><span class="keyword">bool</span> <a name="id599293-bb"></a><span class="keyword">operator</span><span class="special">==</span><span class="special">(</span><span class="keyword">const</span> <a class="link" href="date_duration.html" title="Class template date_duration">date_duration</a> <span class="special">&</span> rhs<span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>Equality. </li> |
| <li class="listitem"> |
| <pre class="literallayout"><span class="keyword">bool</span> <a name="id599313-bb"></a><span class="keyword">operator</span><span class="special"><</span><span class="special">(</span><span class="keyword">const</span> <a class="link" href="date_duration.html" title="Class template date_duration">date_duration</a> <span class="special">&</span> rhs<span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>Less. </li> |
| <li class="listitem"> |
| <pre class="literallayout"><a class="link" href="date_duration.html" title="Class template date_duration">date_duration</a> <span class="special">&</span> <a name="id599332-bb"></a><span class="keyword">operator</span><span class="special">-=</span><span class="special">(</span><span class="keyword">const</span> <a class="link" href="date_duration.html" title="Class template date_duration">date_duration</a> <span class="special">&</span> rhs<span class="special">)</span><span class="special">;</span></pre>Subtract another duration -- result is signed. </li> |
| <li class="listitem"> |
| <pre class="literallayout"><a class="link" href="date_duration.html" title="Class template date_duration">date_duration</a> <span class="special">&</span> <a name="id599355-bb"></a><span class="keyword">operator</span><span class="special">+=</span><span class="special">(</span><span class="keyword">const</span> <a class="link" href="date_duration.html" title="Class template date_duration">date_duration</a> <span class="special">&</span> rhs<span class="special">)</span><span class="special">;</span></pre>Add a duration -- result is signed. </li> |
| <li class="listitem"> |
| <pre class="literallayout"><a class="link" href="date_duration.html" title="Class template date_duration">date_duration</a> <a name="id433366-bb"></a><span class="keyword">operator</span><span class="special">-</span><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>unary- Allows for dd = -date_duration(2); -> dd == -2 </li> |
| <li class="listitem"> |
| <pre class="literallayout"><a class="link" href="date_duration.html" title="Class template date_duration">date_duration</a> <span class="special">&</span> <a name="id582948-bb"></a><span class="keyword">operator</span><span class="special">/=</span><span class="special">(</span><span class="keyword">int</span> divisor<span class="special">)</span><span class="special">;</span></pre>Division operations on a duration with an integer. </li> |
| <li class="listitem"> |
| <pre class="literallayout"><span class="keyword">bool</span> <a name="id582967-bb"></a><span class="identifier">is_negative</span><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>return sign information </li> |
| </ol></div> |
| </div> |
| <div class="refsect2"> |
| <a name="id1067862"></a><h3> |
| <a name="id319721-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="keyword">static</span> <a class="link" href="date_duration.html" title="Class template date_duration">date_duration</a> <a name="id319725-bb"></a><span class="identifier">unit</span><span class="special">(</span><span class="special">)</span><span class="special">;</span></pre>Returns the smallest duration -- used by to calculate 'end'. </li></ol></div> |
| </div> |
| </div> |
| </div> |
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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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