# CSJ2K.j2k.io.BinaryDataOutput.writeDouble

## Content

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<h1 id="CSJ2K_j2k_io_BinaryDataOutput_writeDouble_" data-uid="CSJ2K.j2k.io.BinaryDataOutput.writeDouble*">writeDouble Method
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<div class="markdown level0 summary"></div>
<div class="markdown level0 conceptual"></div>



<a id="CSJ2K_j2k_io_BinaryDataOutput_writeDouble_" data-uid="CSJ2K.j2k.io.BinaryDataOutput.writeDouble*"></a>
<h4 id="CSJ2K_j2k_io_BinaryDataOutput_writeDouble_System_Double_" data-uid="CSJ2K.j2k.io.BinaryDataOutput.writeDouble(System.Double)">writeDouble(double)</h4>
<div class="markdown level1 summary"><p>Should write the IEEE double value <tt>v</tt> (i.e., 64 bits)
to the output. Prior to writing, the output should be realigned
at the byte level.</p>
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<div class="markdown level1 conceptual"></div>
<h5 class="declaration">Declaration</h5>
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  <pre><code class="lang-csharp hljs">void writeDouble(double v)</code></pre>
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  <pre><code class="lang-vbnet hljs">Sub writeDouble(v As Double)</code></pre>
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<h5 class="parameters">Parameters</h5>
<table class="table table-bordered table-condensed">
  <thead>
    <tr>
      <th>Type</th>
      <th>Name</th>
      <th>Description</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.double">double</a></td>
      <td><span class="parametername">v</span></td>
      <td><p>The value to write to the output</p>
</td>
    </tr>
  </tbody>
</table>
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