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<div class="titlepage"><div><div><h3 class="title">
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<a name="boost_asio.reference.GettableSerialPortOption"></a><a class="link" href="GettableSerialPortOption.html" title="Gettable serial port option requirements">Gettable
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serial port option requirements</a>
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</h3></div></div></div>
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<p>
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In the table below, <code class="computeroutput">X</code> denotes a serial port option class, <code class="computeroutput">a</code>
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denotes a value of <code class="computeroutput">X</code>, <code class="computeroutput">ec</code> denotes a value of type
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<code class="computeroutput">error_code</code>, and <code class="computeroutput">s</code> denotes a value of implementation-defined
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type <span class="emphasis"><em><code class="literal">storage</code></em></span> (where <span class="emphasis"><em><code class="literal">storage</code></em></span>
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is the type <code class="computeroutput">DCB</code> on Windows and <code class="computeroutput">termios</code> on <span class="emphasis"><em>POSIX</em></span>
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platforms), and <code class="computeroutput">u</code> denotes an identifier.
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<div class="table">
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<a name="boost_asio.reference.GettableSerialPortOption.t0"></a><p class="title"><b>Table 16. GettableSerialPortOption requirements</b></p>
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<div class="table-contents"><table class="table" summary="GettableSerialPortOption requirements">
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<colgroup>
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<col>
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<col>
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</colgroup>
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<thead><tr>
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<th>
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<p>
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expression
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</p>
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<p>
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type
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</p>
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</th>
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<th>
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<p>
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assertion/note<br> pre/post-conditions
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</p>
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<code class="computeroutput">const </code><span class="emphasis"><em><code class="literal">storage</code></em></span><code class="computeroutput">&
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u = s;</code><br> <code class="computeroutput">a.load(u, ec);</code>
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</p>
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</td>
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<td>
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<p>
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<code class="computeroutput">error_code</code>
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</p>
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</td>
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<td>
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<p>
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Retrieves the value of the serial port option from the storage.<br>
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<br> If successful, sets <code class="computeroutput">ec</code> such that <code class="computeroutput">!ec</code>
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is true. If an error occurred, sets <code class="computeroutput">ec</code> such that
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<code class="computeroutput">!!ec</code> is true. Returns <code class="computeroutput">ec</code>.
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<td align="right"><div class="copyright-footer">Copyright © 2003-2021 Christopher
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M. Kohlhoff<p>
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Distributed under the Boost Software License, Version 1.0. (See accompanying
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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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