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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html lang="en">
<head>
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<link rel="up" title="FatFs" href="../00index_e.html">
<link rel="alternate" hreflang="ja" title="Japanese" href="../ja/size.html">
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<title>FatFs - f_size</title>
</head>
<body>
<div class="para func">
<h2>f_size</h2>
<p>The f_size function gets the size of a file.</p>
<pre>
DWORD f_size (
FIL* <span class="arg">fp</span> <span class="c">/* [IN] File object */</span>
);
</pre>
</div>
<div class="para arg">
<h4>Parameters</h4>
<dl class="par">
<dt>fp</dt>
<dd>Pointer to the open file object structure.</dd>
</dl>
</div>
<div class="para ret">
<h4>Return Values</h4>
<p>Returns the size of the file in unit of byte.</p>
</div>
<div class="para desc">
<h4>Description</h4>
<p>In this revision, the <tt>f_size()</tt> function is implemented as a macro.</p>
<pre>
<span class="k">#define</span> f_size(fp) ((fp)->fsize)
</pre>
</div>
<div class="para comp">
<h4>QuickInfo</h4>
<p>Always available.</p>
</div>
<div class="para ref">
<h4>See Also</h4>
<p><tt><a href="open.html">f_open</a>, <a href="lseek.html">f_lseek</a>, <a href="sfile.html">FIL</a></tt></p>
</div>
<p class="foot"><a href="../00index_e.html">Return</a></p>
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