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<h2><span class="refentrytitle">Function template operator&lt;&lt;</span></h2>
<p>boost::units::operator&lt;&lt;</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="../../boost_units/Reference.html#header.boost.units.io_hpp" title="Header &lt;boost/units/io.hpp&gt;">boost/units/io.hpp</a>&gt;
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<span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> Char<span class="special">,</span> <span class="keyword">typename</span> Traits<span class="special">,</span> <span class="keyword">typename</span> Dimension<span class="special">,</span> <span class="keyword">typename</span> System<span class="special">&gt;</span>
<span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_ostream</span><span class="special">&lt;</span> <span class="identifier">Char</span><span class="special">,</span> <span class="identifier">Traits</span> <span class="special">&gt;</span> <span class="special">&amp;</span>
<span class="keyword">operator</span><span class="special">&lt;&lt;</span><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_ostream</span><span class="special">&lt;</span> <span class="identifier">Char</span><span class="special">,</span> <span class="identifier">Traits</span> <span class="special">&gt;</span> <span class="special">&amp;</span> os<span class="special">,</span>
<span class="keyword">const</span> <a class="link" href="unit.html" title="Class template unit">unit</a><span class="special">&lt;</span> <span class="identifier">Dimension</span><span class="special">,</span> <span class="identifier">System</span> <span class="special">&gt;</span> <span class="special">&amp;</span> u<span class="special">)</span><span class="special">;</span></pre></div>
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<a name="id2839746"></a><h2>Description</h2>
<p>Print a <code class="computeroutput">unit</code> as a list of base units and their exponents.</p>
<p>for <code class="computeroutput">symbol_format</code> outputs e.g. "m s^-1" or "J". for <code class="computeroutput">name_format</code> outputs e.g. "meter second^-1" or "joule". for <code class="computeroutput">raw_format</code> outputs e.g. "m s^-1" or "meter kilogram^2 second^-2". for <code class="computeroutput">typename_format</code> outputs the typename itself (currently demangled only on GCC). </p>
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<td align="right"><div class="copyright-footer">Copyright &#169; 2003 -2008 Matthias Christian Schabel, 2007-2010 Steven
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Distributed under the Boost Software License, Version 1.0. (See accompanying
file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
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