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<div class="refentry" title="Class template null_dst_rules">
<a name="boost.date_time.null_dst_rules"></a><div class="titlepage"></div>
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<h2><span class="refentrytitle">Class template null_dst_rules</span></h2>
<p>boost::date_time::null_dst_rules — 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="emphasis"><em>// In header: <<a class="link" href="../../date_time/doxy.html#header.boost.date_time.dst_rules_hpp" title="Header <boost/date_time/dst_rules.hpp>">boost/date_time/dst_rules.hpp</a>>
</em></span><span class="bold"><strong>template</strong></span><<span class="bold"><strong>typename</strong></span> date_type_, <span class="bold"><strong>typename</strong></span> time_duration_type_>
<span class="bold"><strong>class</strong></span> <a class="link" href="null_dst_rules.html" title="Class template null_dst_rules">null_dst_rules</a> {
<span class="bold"><strong>public</strong></span>:
<span class="emphasis"><em>// types</em></span>
<span class="bold"><strong>typedef</strong></span> time_duration_type_ <a name="boost.date_time.null_dst_rules.time_duration_type"></a>time_duration_type;
<span class="bold"><strong>typedef</strong></span> date_type_ <a name="boost.date_time.null_dst_rules.date_type"></a>date_type;
<span class="emphasis"><em>// <a class="link" href="null_dst_rules.html#id337375-bb">public static functions</a></em></span>
<span class="type"><span class="bold"><strong>static</strong></span> time_is_dst_result</span>
<a class="link" href="null_dst_rules.html#id337378-bb">local_is_dst</a>(<span class="bold"><strong>const</strong></span> date_type &, <span class="bold"><strong>const</strong></span> time_duration_type &) ;
<span class="type"><span class="bold"><strong>static</strong></span> time_is_dst_result</span>
<a class="link" href="null_dst_rules.html#id407116-bb">utc_is_dst</a>(<span class="bold"><strong>const</strong></span> date_type &, <span class="bold"><strong>const</strong></span> time_duration_type &) ;
<span class="type"><span class="bold"><strong>static</strong></span> <span class="bold"><strong>bool</strong></span></span> <a class="link" href="null_dst_rules.html#id320573-bb">is_dst_boundary_day</a>(date_type) ;
<span class="type"><span class="bold"><strong>static</strong></span> time_duration_type</span> <a class="link" href="null_dst_rules.html#id320587-bb">dst_offset</a>() ;
};</pre></div>
<div class="refsect1" title="Description">
<a name="id796152"></a><h2>Description</h2>
<div class="refsect2" title="null_dst_rules public static functions">
<a name="id796155"></a><h3>
<a name="id337375-bb"></a><code class="computeroutput">null_dst_rules</code> public static functions</h3>
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<li class="listitem">
<pre class="literallayout"><span class="type"><span class="bold"><strong>static</strong></span> time_is_dst_result</span>
<a name="id337378-bb"></a>local_is_dst(<span class="bold"><strong>const</strong></span> date_type &, <span class="bold"><strong>const</strong></span> time_duration_type &) ;</pre>Calculates if the given local time is dst or not. <p>
</p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="type"><span class="bold"><strong>static</strong></span> time_is_dst_result</span>
<a name="id407116-bb"></a>utc_is_dst(<span class="bold"><strong>const</strong></span> date_type &, <span class="bold"><strong>const</strong></span> time_duration_type &) ;</pre>Calculates if the given utc time is in dst. </li>
<li class="listitem"><pre class="literallayout"><span class="type"><span class="bold"><strong>static</strong></span> <span class="bold"><strong>bool</strong></span></span> <a name="id320573-bb"></a>is_dst_boundary_day(date_type d) ;</pre></li>
<li class="listitem"><pre class="literallayout"><span class="type"><span class="bold"><strong>static</strong></span> time_duration_type</span> <a name="id320587-bb"></a>dst_offset() ;</pre></li>
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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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