<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=US-ASCII"> <title>Class template years_duration</title> <link rel="stylesheet" href="../../../../doc/src/boostbook.css" type="text/css"> <meta name="generator" content="DocBook XSL Stylesheets V1.78.1"> <link rel="home" href="../../index.html" title="The Boost C++ Libraries BoostBook Documentation Subset"> <link rel="up" href="../../date_time/doxy.html#header.boost.date_time.date_duration_types_hpp" title="Header <boost/date_time/date_duration_types.hpp>"> <link rel="prev" href="weeks_duration.html" title="Class template weeks_duration"> <link rel="next" href="date_facet.html" title="Class template date_facet"> </head> <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"> <table cellpadding="2" width="100%"><tr> <td valign="top"><img alt="Boost C++ Libraries" width="277" height="86" 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name="boost.date_time.years_duration"></a><div class="titlepage"></div> <div class="refnamediv"> <h2><span class="refentrytitle">Class template years_duration</span></h2> <p>boost::date_time::years_duration — additional duration type that represents a logical year </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_types_hpp" title="Header <boost/date_time/date_duration_types.hpp>">boost/date_time/date_duration_types.hpp</a>> </span><span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> base_config<span class="special">></span> <span class="keyword">class</span> <a class="link" href="years_duration.html" title="Class template years_duration">years_duration</a> <span class="special">{</span> <span class="keyword">public</span><span class="special">:</span> <span class="comment">// <a class="link" href="years_duration.html#boost.date_time.years_durationconstruct-copy-destruct">construct/copy/destruct</a></span> <a class="link" href="years_duration.html#idm45507102091232-bb"><span class="identifier">years_duration</span></a><span class="special">(</span><span class="identifier">int_rep</span><span class="special">)</span><span class="special">;</span> <a class="link" href="years_duration.html#idm45507102090256-bb"><span class="identifier">years_duration</span></a><span class="special">(</span><span class="identifier">special_values</span><span class="special">)</span><span class="special">;</span> <span class="comment">// <a class="link" href="years_duration.html#idm45507135604048-bb">public member functions</a></span> <span class="identifier">int_rep</span> <a class="link" href="years_duration.html#idm45507107392656-bb"><span class="identifier">number_of_years</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span> <span class="identifier">duration_type</span> <a class="link" href="years_duration.html#idm45507093131200-bb"><span class="identifier">get_neg_offset</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">date_type</span> <span class="special">&</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span> <span class="identifier">duration_type</span> <a class="link" href="years_duration.html#idm45507096014176-bb"><span class="identifier">get_offset</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">date_type</span> <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="years_duration.html#idm45507093200096-bb"><span class="keyword">operator</span><span class="special">==</span></a><span class="special">(</span><span class="keyword">const</span> years_type <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="years_duration.html#idm45507134075024-bb"><span class="keyword">operator</span><span class="special">!=</span></a><span class="special">(</span><span class="keyword">const</span> years_type <span class="special">&</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span> years_type <a class="link" href="years_duration.html#idm45507131057040-bb"><span class="keyword">operator</span><span class="special">+</span></a><span class="special">(</span><span class="keyword">const</span> years_type <span class="special">&</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span> years_type <span class="special">&</span> <a class="link" href="years_duration.html#idm45507152778224-bb"><span class="keyword">operator</span><span class="special">+=</span></a><span class="special">(</span><span class="keyword">const</span> years_type <span class="special">&</span><span class="special">)</span><span class="special">;</span> years_type <a class="link" href="years_duration.html#idm45507160376208-bb"><span class="keyword">operator</span><span class="special">-</span></a><span class="special">(</span><span class="keyword">const</span> years_type <span class="special">&</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span> years_type <span class="special">&</span> <a class="link" href="years_duration.html#idm45507111709280-bb"><span class="keyword">operator</span><span class="special">-=</span></a><span class="special">(</span><span class="keyword">const</span> years_type <span class="special">&</span><span class="special">)</span><span class="special">;</span> years_type <a class="link" href="years_duration.html#idm45507095691616-bb"><span class="keyword">operator</span><span class="special">*</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">int_type</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span> years_type <span class="special">&</span> <a class="link" href="years_duration.html#idm45507160549520-bb"><span class="keyword">operator</span><span class="special">*=</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">int_type</span><span class="special">)</span><span class="special">;</span> years_type <a class="link" href="years_duration.html#idm45507104120272-bb"><span class="keyword">operator</span><span class="special">/</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">int_type</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span> years_type <span class="special">&</span> <a class="link" href="years_duration.html#idm45507091433696-bb"><span class="keyword">operator</span><span class="special">/=</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">int_type</span><span class="special">)</span><span class="special">;</span> months_type <a class="link" href="years_duration.html#idm45507093403568-bb"><span class="keyword">operator</span><span class="special">+</span></a><span class="special">(</span><span class="keyword">const</span> months_type <span class="special">&</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span> months_type <a class="link" href="years_duration.html#idm45507161834848-bb"><span class="keyword">operator</span><span class="special">-</span></a><span class="special">(</span><span class="keyword">const</span> months_type <span class="special">&</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span> <span class="special">}</span><span class="special">;</span></pre></div> <div class="refsect1"> <a name="idm45555377135504"></a><h2>Description</h2> <p>A logical year enables things like: "date(2002,Mar,2) + years(2) -> 2004-Mar-2". If the date is a last day-of-the-month, the result will also be a last-day-of-the-month (ie date(2001-Feb-28) + years(3) -> 2004-Feb-29). </p> <div class="refsect2"> <a name="idm45555377134272"></a><h3> <a name="boost.date_time.years_durationconstruct-copy-destruct"></a><code class="computeroutput">years_duration</code> public construct/copy/destruct</h3> <div class="orderedlist"><ol class="orderedlist" type="1"> <li class="listitem"><pre class="literallayout"><a name="idm45507102091232-bb"></a><span class="identifier">years_duration</span><span class="special">(</span><span class="identifier">int_rep</span> num<span class="special">)</span><span class="special">;</span></pre></li> <li class="listitem"><pre class="literallayout"><a name="idm45507102090256-bb"></a><span class="identifier">years_duration</span><span class="special">(</span><span class="identifier">special_values</span> sv<span class="special">)</span><span class="special">;</span></pre></li> </ol></div> </div> <div class="refsect2"> <a name="idm45555377123296"></a><h3> <a name="idm45507135604048-bb"></a><code class="computeroutput">years_duration</code> public member functions</h3> <div class="orderedlist"><ol class="orderedlist" type="1"> <li class="listitem"><pre class="literallayout"><span class="identifier">int_rep</span> <a name="idm45507107392656-bb"></a><span class="identifier">number_of_years</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_type</span> <a name="idm45507093131200-bb"></a><span class="identifier">get_neg_offset</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">date_type</span> <span class="special">&</span> d<span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>returns a negative duration </li> <li class="listitem"><pre class="literallayout"><span class="identifier">duration_type</span> <a name="idm45507096014176-bb"></a><span class="identifier">get_offset</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">date_type</span> <span class="special">&</span> d<span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre></li> <li class="listitem"><pre class="literallayout"><span class="keyword">bool</span> <a name="idm45507093200096-bb"></a><span class="keyword">operator</span><span class="special">==</span><span class="special">(</span><span class="keyword">const</span> years_type <span class="special">&</span> rhs<span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre></li> <li class="listitem"><pre class="literallayout"><span class="keyword">bool</span> <a name="idm45507134075024-bb"></a><span class="keyword">operator</span><span class="special">!=</span><span class="special">(</span><span class="keyword">const</span> years_type <span class="special">&</span> rhs<span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre></li> <li class="listitem"><pre class="literallayout">years_type <a name="idm45507131057040-bb"></a><span class="keyword">operator</span><span class="special">+</span><span class="special">(</span><span class="keyword">const</span> years_type <span class="special">&</span> rhs<span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre></li> <li class="listitem"><pre class="literallayout">years_type <span class="special">&</span> <a name="idm45507152778224-bb"></a><span class="keyword">operator</span><span class="special">+=</span><span class="special">(</span><span class="keyword">const</span> years_type <span class="special">&</span> rhs<span class="special">)</span><span class="special">;</span></pre></li> <li class="listitem"><pre class="literallayout">years_type <a name="idm45507160376208-bb"></a><span class="keyword">operator</span><span class="special">-</span><span class="special">(</span><span class="keyword">const</span> years_type <span class="special">&</span> rhs<span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre></li> <li class="listitem"><pre class="literallayout">years_type <span class="special">&</span> <a name="idm45507111709280-bb"></a><span class="keyword">operator</span><span class="special">-=</span><span class="special">(</span><span class="keyword">const</span> years_type <span class="special">&</span> rhs<span class="special">)</span><span class="special">;</span></pre></li> <li class="listitem"><pre class="literallayout">years_type <a name="idm45507095691616-bb"></a><span class="keyword">operator</span><span class="special">*</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">int_type</span> rhs<span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre></li> <li class="listitem"><pre class="literallayout">years_type <span class="special">&</span> <a name="idm45507160549520-bb"></a><span class="keyword">operator</span><span class="special">*=</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">int_type</span> rhs<span class="special">)</span><span class="special">;</span></pre></li> <li class="listitem"><pre class="literallayout">years_type <a name="idm45507104120272-bb"></a><span class="keyword">operator</span><span class="special">/</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">int_type</span> rhs<span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre></li> <li class="listitem"><pre class="literallayout">years_type <span class="special">&</span> <a name="idm45507091433696-bb"></a><span class="keyword">operator</span><span class="special">/=</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">int_type</span> rhs<span class="special">)</span><span class="special">;</span></pre></li> <li class="listitem"><pre class="literallayout">months_type <a name="idm45507093403568-bb"></a><span class="keyword">operator</span><span class="special">+</span><span class="special">(</span><span class="keyword">const</span> months_type <span class="special">&</span> m<span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre></li> <li class="listitem"><pre class="literallayout">months_type <a name="idm45507161834848-bb"></a><span class="keyword">operator</span><span class="special">-</span><span class="special">(</span><span class="keyword">const</span> months_type <span class="special">&</span> m<span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre></li> </ol></div> </div> </div> </div> <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> <td align="left"></td> <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> </div></td> </tr></table> <hr> <div class="spirit-nav"> <a accesskey="p" href="weeks_duration.html"><img src="../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../../date_time/doxy.html#header.boost.date_time.date_duration_types_hpp"><img src="../../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../../index.html"><img src="../../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="date_facet.html"><img src="../../../../doc/src/images/next.png" alt="Next"></a> </div> </body> </html>