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<title>Class template null_dst_rules</title>
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<h2><span class="refentrytitle">Class template null_dst_rules</span></h2>
<p>boost::date_time::null_dst_rules &#8212; Used for local time adjustments in places that don't use dst. </p>
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<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="bold"><strong>template</strong></span>&lt;<span class="bold"><strong>typename</strong></span> date_type_, <span class="bold"><strong>typename</strong></span> time_duration_type_&gt; 
<span class="bold"><strong>class</strong></span> null_dst_rules {
<span class="bold"><strong>public</strong></span>:
аа<span class="emphasis"><em>// types</em></span>
аа<span class="bold"><strong>typedef</strong></span> time_duration_type_ time_duration_type;
аа<span class="bold"><strong>typedef</strong></span> date_type_ааааааааа date_type;ааааааааа

аа<span class="emphasis"><em>// <a href="null_dst_rules.html#id896224-bb">public static functions</a></em></span>
аа<span class="type">time_is_dst_result</span> 
аа<a href="null_dst_rules.html#id896229-bb">local_is_dst</a>(<span class="bold"><strong>const</strong></span> date_type &amp;, <span class="bold"><strong>const</strong></span> time_duration_type &amp;) ;
аа<span class="type">time_is_dst_result</span> 
аа<a href="null_dst_rules.html#id929324-bb">utc_is_dst</a>(<span class="bold"><strong>const</strong></span> date_type &amp;, <span class="bold"><strong>const</strong></span> time_duration_type &amp;) ;
аа<span class="type"><span class="bold"><strong>bool</strong></span></span> <a href="null_dst_rules.html#id859994-bb">is_dst_boundary_day</a>(date_type) ;
аа<span class="type">time_duration_type</span> <a href="null_dst_rules.html#id823251-bb">dst_offset</a>() ;
};</pre></div>
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<a name="id1082325"></a><h2>Description</h2>
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<a name="id1082329"></a><h3>
<a name="id896224-bb"></a><code class="computeroutput">null_dst_rules</code> public static functions</h3>
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<pre class="literallayout"><span class="type">time_is_dst_result</span> 
<a name="id896229-bb"></a>local_is_dst(<span class="bold"><strong>const</strong></span> date_type &amp; , <span class="bold"><strong>const</strong></span> time_duration_type &amp; ) ;</pre>
<p></p>
</li>
<li><pre class="literallayout"><span class="type">time_is_dst_result</span> 
<a name="id929324-bb"></a>utc_is_dst(<span class="bold"><strong>const</strong></span> date_type &amp; , <span class="bold"><strong>const</strong></span> time_duration_type &amp; ) ;</pre></li>
<li><pre class="literallayout"><span class="type"><span class="bold"><strong>bool</strong></span></span> <a name="id859994-bb"></a>is_dst_boundary_day(date_type d) ;</pre></li>
<li><pre class="literallayout"><span class="type">time_duration_type</span> <a name="id823251-bb"></a>dst_offset() ;</pre></li>
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