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26<a name="date_duration"></a><div class="titlepage"></div>
27<div class="refnamediv">
28<h2><span class="refentrytitle">Class template date_duration</span></h2>
29<p>boost::date_time::date_duration &#8212; Duration type with date level resolution. </p>
30</div>
31<h2 xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv-title">Synopsis</h2>
32<div xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv"><pre class="synopsis"><span class="bold"><strong>template</strong></span>&lt;<span class="bold"><strong>typename</strong></span> duration_rep_traits&gt; 
33<span class="bold"><strong>class</strong></span> date_duration {
34<span class="bold"><strong>public</strong></span>:
35  <span class="emphasis"><em>// types</em></span>
36  <span class="bold"><strong>typedef</strong></span> duration_rep_traits::int_type  duration_rep_type;
37  <span class="bold"><strong>typedef</strong></span> duration_rep_traits::impl_type duration_rep;     
38
39  <span class="emphasis"><em>// <a href="date_duration.html#date_durationconstruct-copy-destruct">construct/copy/destruct</a></em></span>
40  <a href="date_duration.html#id2509673-bb">date_duration</a>(duration_rep);
41  <a href="date_duration.html#id2484453-bb">date_duration</a>(special_values);
42  <a href="date_duration.html#id2519240-bb">date_duration</a>(<span class="bold"><strong>const</strong></span> <a href="date_duration.html" title="Class template date_duration">date_duration</a>&lt; duration_rep_traits &gt; &amp;);
43
44  <span class="emphasis"><em>// <a href="date_duration.html#id2507074-bb">public member functions</a></em></span>
45  <span class="type">duration_rep</span> <a href="date_duration.html#id2507079-bb">get_rep</a>() <span class="bold"><strong>const</strong></span>;
46  <span class="type"><span class="bold"><strong>bool</strong></span></span> <a href="date_duration.html#id2415898-bb">is_special</a>() <span class="bold"><strong>const</strong></span>;
47  <span class="type">duration_rep_type</span> <a href="date_duration.html#id2485339-bb">days</a>() <span class="bold"><strong>const</strong></span>;
48  <span class="type"><span class="bold"><strong>bool</strong></span></span> <a href="date_duration.html#id2422529-bb"><span class="bold"><strong>operator</strong></span>==</a>(<span class="bold"><strong>const</strong></span> <a href="date_duration.html" title="Class template date_duration">date_duration</a> &amp;) <span class="bold"><strong>const</strong></span>;
49  <span class="type"><span class="bold"><strong>bool</strong></span></span> <a href="date_duration.html#id2385742-bb"><span class="bold"><strong>operator</strong></span>&lt;</a>(<span class="bold"><strong>const</strong></span> <a href="date_duration.html" title="Class template date_duration">date_duration</a> &amp;) <span class="bold"><strong>const</strong></span>;
50  <span class="type"><a href="date_duration.html" title="Class template date_duration">date_duration</a></span> <a href="date_duration.html#id2485398-bb"><span class="bold"><strong>operator</strong></span>-=</a>(<span class="bold"><strong>const</strong></span> <a href="date_duration.html" title="Class template date_duration">date_duration</a> &amp;) ;
51  <span class="type"><a href="date_duration.html" title="Class template date_duration">date_duration</a></span> <a href="date_duration.html#id2493103-bb"><span class="bold"><strong>operator</strong></span>+=</a>(<span class="bold"><strong>const</strong></span> <a href="date_duration.html" title="Class template date_duration">date_duration</a> &amp;) ;
52  <span class="type"><a href="date_duration.html" title="Class template date_duration">date_duration</a></span> <a href="date_duration.html#id2407391-bb"><span class="bold"><strong>operator</strong></span>-</a>() <span class="bold"><strong>const</strong></span>;
53  <span class="type"><a href="date_duration.html" title="Class template date_duration">date_duration</a>&lt; duration_rep_traits &gt;</span> <a href="date_duration.html#id2497458-bb"><span class="bold"><strong>operator</strong></span>/=</a>(<span class="bold"><strong>int</strong></span>) ;
54  <span class="type"><a href="date_duration.html" title="Class template date_duration">date_duration</a>&lt; duration_rep_traits &gt;</span> <a href="date_duration.html#id2464165-bb"><span class="bold"><strong>operator</strong></span>/</a>(<span class="bold"><strong>int</strong></span>) ;
55  <span class="type"><span class="bold"><strong>bool</strong></span></span> <a href="date_duration.html#id2445593-bb">is_negative</a>() <span class="bold"><strong>const</strong></span>;
56
57  <span class="emphasis"><em>// <a href="date_duration.html#id2483511-bb">public static functions</a></em></span>
58  <span class="type"><a href="date_duration.html" title="Class template date_duration">date_duration</a></span> <a href="date_duration.html#id2483515-bb">unit</a>() ;
59};</pre></div>
60<div class="refsect1" lang="en">
61<a name="id2610135"></a><h2>Description</h2>
62<div class="refsect2" lang="en">
63<a name="id2610138"></a><h3>
64<a name="date_durationconstruct-copy-destruct"></a><code class="computeroutput">date_duration</code> construct/copy/destruct</h3>
65<div class="orderedlist"><ol type="1">
66<li><pre class="literallayout"><a name="id2509673-bb"></a>date_duration(duration_rep day_count);</pre></li>
67<li>
68<pre class="literallayout"><a name="id2484453-bb"></a>date_duration(special_values sv);</pre>
69<p>construct from special_values - only works when instantiated with duration_traits_adapted </p>
70</li>
71<li><pre class="literallayout"><a name="id2519240-bb"></a>date_duration(<span class="bold"><strong>const</strong></span> <a href="date_duration.html" title="Class template date_duration">date_duration</a>&lt; duration_rep_traits &gt; &amp; other);</pre></li>
72</ol></div>
73</div>
74<div class="refsect2" lang="en">
75<a name="id2610218"></a><h3>
76<a name="id2507074-bb"></a><code class="computeroutput">date_duration</code> public member functions</h3>
77<div class="orderedlist"><ol type="1">
78<li><pre class="literallayout"><span class="type">duration_rep</span> <a name="id2507079-bb"></a>get_rep() <span class="bold"><strong>const</strong></span>;</pre></li>
79<li><pre class="literallayout"><span class="type"><span class="bold"><strong>bool</strong></span></span> <a name="id2415898-bb"></a>is_special() <span class="bold"><strong>const</strong></span>;</pre></li>
80<li><pre class="literallayout"><span class="type">duration_rep_type</span> <a name="id2485339-bb"></a>days() <span class="bold"><strong>const</strong></span>;</pre></li>
81<li><pre class="literallayout"><span class="type"><span class="bold"><strong>bool</strong></span></span> <a name="id2422529-bb"></a><span class="bold"><strong>operator</strong></span>==(<span class="bold"><strong>const</strong></span> <a href="date_duration.html" title="Class template date_duration">date_duration</a> &amp; rhs) <span class="bold"><strong>const</strong></span>;</pre></li>
82<li><pre class="literallayout"><span class="type"><span class="bold"><strong>bool</strong></span></span> <a name="id2385742-bb"></a><span class="bold"><strong>operator</strong></span>&lt;(<span class="bold"><strong>const</strong></span> <a href="date_duration.html" title="Class template date_duration">date_duration</a> &amp; rhs) <span class="bold"><strong>const</strong></span>;</pre></li>
83<li><pre class="literallayout"><span class="type"><a href="date_duration.html" title="Class template date_duration">date_duration</a></span> <a name="id2485398-bb"></a><span class="bold"><strong>operator</strong></span>-=(<span class="bold"><strong>const</strong></span> <a href="date_duration.html" title="Class template date_duration">date_duration</a> &amp; rhs) ;</pre></li>
84<li><pre class="literallayout"><span class="type"><a href="date_duration.html" title="Class template date_duration">date_duration</a></span> <a name="id2493103-bb"></a><span class="bold"><strong>operator</strong></span>+=(<span class="bold"><strong>const</strong></span> <a href="date_duration.html" title="Class template date_duration">date_duration</a> &amp; rhs) ;</pre></li>
85<li><pre class="literallayout"><span class="type"><a href="date_duration.html" title="Class template date_duration">date_duration</a></span> <a name="id2407391-bb"></a><span class="bold"><strong>operator</strong></span>-() <span class="bold"><strong>const</strong></span>;</pre></li>
86<li><pre class="literallayout"><span class="type"><a href="date_duration.html" title="Class template date_duration">date_duration</a>&lt; duration_rep_traits &gt;</span> <a name="id2497458-bb"></a><span class="bold"><strong>operator</strong></span>/=(<span class="bold"><strong>int</strong></span> divisor) ;</pre></li>
87<li><pre class="literallayout"><span class="type"><a href="date_duration.html" title="Class template date_duration">date_duration</a>&lt; duration_rep_traits &gt;</span> <a name="id2464165-bb"></a><span class="bold"><strong>operator</strong></span>/(<span class="bold"><strong>int</strong></span> divisor) ;</pre></li>
88<li><pre class="literallayout"><span class="type"><span class="bold"><strong>bool</strong></span></span> <a name="id2445593-bb"></a>is_negative() <span class="bold"><strong>const</strong></span>;</pre></li>
89</ol></div>
90</div>
91<div class="refsect2" lang="en">
92<a name="id2610606"></a><h3>
93<a name="id2483511-bb"></a><code class="computeroutput">date_duration</code> public static functions</h3>
94<div class="orderedlist"><ol type="1"><li><pre class="literallayout"><span class="type"><a href="date_duration.html" title="Class template date_duration">date_duration</a></span> <a name="id2483515-bb"></a>unit() ;</pre></li></ol></div>
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