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28<h2><span class="refentrytitle">Class template month_functor</span></h2>
29<p>boost::date_time::month_functor &#8212; Provides calculation to find next nth month given a date. </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> date_type&gt; 
33<span class="bold"><strong>class</strong></span> month_functor {
34<span class="bold"><strong>public</strong></span>:
35  <span class="emphasis"><em>// types</em></span>
36  <span class="bold"><strong>typedef</strong></span> date_type::duration_type duration_type;
37  <span class="bold"><strong>typedef</strong></span> date_type::calendar_type cal_type;     
38  <span class="bold"><strong>typedef</strong></span> cal_type::ymd_type       ymd_type;     
39  <span class="bold"><strong>typedef</strong></span> cal_type::day_type       day_type;     
40
41  <span class="emphasis"><em>// <a href="month_functor.html#month_functorconstruct-copy-destruct">construct/copy/destruct</a></em></span>
42  <a href="month_functor.html#id2385161-bb">month_functor</a>(<span class="bold"><strong>int</strong></span>);
43
44  <span class="emphasis"><em>// <a href="month_functor.html#id2400519-bb">public member functions</a></em></span>
45  <span class="type">duration_type</span> <a href="month_functor.html#id2418304-bb">get_offset</a>(<span class="bold"><strong>const</strong></span> date_type &amp;) <span class="bold"><strong>const</strong></span>;
46  <span class="type">duration_type</span> <a href="month_functor.html#id2485324-bb">get_neg_offset</a>(<span class="bold"><strong>const</strong></span> date_type &amp;) <span class="bold"><strong>const</strong></span>;
47};</pre></div>
48<div class="refsect1" lang="en">
49<a name="id2605829"></a><h2>Description</h2>
50<p>This adjustment function provides the logic for 'month-based' advancement on a ymd based calendar. The policy it uses to handle the non existant end of month days is to back up to the last day of the month. Also, if the starting date is the last day of a month, this functor will attempt to adjust to the end of the month. </p>
51<div class="refsect2" lang="en">
52<a name="id2605840"></a><h3>
53<a name="month_functorconstruct-copy-destruct"></a><code class="computeroutput">month_functor</code> construct/copy/destruct</h3>
54<div class="orderedlist"><ol type="1"><li><pre class="literallayout"><a name="id2385161-bb"></a>month_functor(<span class="bold"><strong>int</strong></span> f);</pre></li></ol></div>
55</div>
56<div class="refsect2" lang="en">
57<a name="id2605880"></a><h3>
58<a name="id2400519-bb"></a><code class="computeroutput">month_functor</code> public member functions</h3>
59<div class="orderedlist"><ol type="1">
60<li><pre class="literallayout"><span class="type">duration_type</span> <a name="id2418304-bb"></a>get_offset(<span class="bold"><strong>const</strong></span> date_type &amp; d) <span class="bold"><strong>const</strong></span>;</pre></li>
61<li><pre class="literallayout"><span class="type">duration_type</span> <a name="id2485324-bb"></a>get_neg_offset(<span class="bold"><strong>const</strong></span> date_type &amp; d) <span class="bold"><strong>const</strong></span>;</pre></li>
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