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<title>Macro BOOST_LOG_TRIVIAL</title>
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<h2><span class="refentrytitle">Macro BOOST_LOG_TRIVIAL</span></h2>
<p>BOOST_LOG_TRIVIAL</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="comment">// In header: &lt;<a class="link" href="log/reference.html#header.boost.log.trivial_hpp" title="Header &lt;boost/log/trivial.hpp&gt;">boost/log/trivial.hpp</a>&gt;

</span>BOOST_LOG_TRIVIAL(lvl)</pre></div>
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<a name="idm45554756476880"></a><h2>Description</h2>
<p>The macro is used to initiate logging. The <code class="computeroutput">lvl</code> argument of the macro specifies one of the following severity levels: <code class="computeroutput">trace</code>, <code class="computeroutput">debug</code>, <code class="computeroutput">info</code>, <code class="computeroutput">warning</code>, <code class="computeroutput">error</code> or <code class="computeroutput">fatal</code> (see <code class="computeroutput">severity_level</code> enum). Following the macro, there may be a streaming expression that composes the record message string. For example:</p>
<pre class="programlisting"><span class="identifier">BOOST_LOG_TRIVIAL</span><span class="special">(</span><span class="identifier">info</span><span class="special">)</span> <span class="special">&lt;&lt;</span> <span class="string">"Hello, world!"</span><span class="special">;</span>
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<td align="right"><div class="copyright-footer">Copyright &#169; 2007-2016 Andrey Semashev<p>
        Distributed under the Boost Software License, Version 1.0. (See accompanying
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