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<h1>gr_crc32.h</h1>  </div>
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<a href="gr__crc32_8h.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/* -*- c++ -*- */</span>
<a name="l00002"></a>00002 <span class="comment">/*</span>
<a name="l00003"></a>00003 <span class="comment"> * Copyright 2005 Free Software Foundation, Inc.</span>
<a name="l00004"></a>00004 <span class="comment"> * </span>
<a name="l00005"></a>00005 <span class="comment"> * This file is part of GNU Radio</span>
<a name="l00006"></a>00006 <span class="comment"> * </span>
<a name="l00007"></a>00007 <span class="comment"> * GNU Radio is free software; you can redistribute it and/or modify</span>
<a name="l00008"></a>00008 <span class="comment"> * it under the terms of the GNU General Public License as published by</span>
<a name="l00009"></a>00009 <span class="comment"> * the Free Software Foundation; either version 3, or (at your option)</span>
<a name="l00010"></a>00010 <span class="comment"> * any later version.</span>
<a name="l00011"></a>00011 <span class="comment"> * </span>
<a name="l00012"></a>00012 <span class="comment"> * GNU Radio is distributed in the hope that it will be useful,</span>
<a name="l00013"></a>00013 <span class="comment"> * but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
<a name="l00014"></a>00014 <span class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the</span>
<a name="l00015"></a>00015 <span class="comment"> * GNU General Public License for more details.</span>
<a name="l00016"></a>00016 <span class="comment"> * </span>
<a name="l00017"></a>00017 <span class="comment"> * You should have received a copy of the GNU General Public License</span>
<a name="l00018"></a>00018 <span class="comment"> * along with GNU Radio; see the file COPYING.  If not, write to</span>
<a name="l00019"></a>00019 <span class="comment"> * the Free Software Foundation, Inc., 51 Franklin Street,</span>
<a name="l00020"></a>00020 <span class="comment"> * Boston, MA 02110-1301, USA.</span>
<a name="l00021"></a>00021 <span class="comment"> */</span>
<a name="l00022"></a>00022 
<a name="l00023"></a>00023 <span class="preprocessor">#ifndef INCLUDED_GR_CRC32_H</span>
<a name="l00024"></a>00024 <span class="preprocessor"></span><span class="preprocessor">#define INCLUDED_GR_CRC32_H</span>
<a name="l00025"></a>00025 <span class="preprocessor"></span>
<a name="l00026"></a>00026 <span class="preprocessor">#include &lt;string&gt;</span>
<a name="l00027"></a>00027 <span class="preprocessor">#include &lt;gr_types.h&gt;</span>
<a name="l00028"></a>00028 <span class="comment"></span>
<a name="l00029"></a>00029 <span class="comment">/*!</span>
<a name="l00030"></a>00030 <span class="comment"> * \brief update running CRC-32</span>
<a name="l00031"></a>00031 <span class="comment"> * \ingroup misc</span>
<a name="l00032"></a>00032 <span class="comment"> *</span>
<a name="l00033"></a>00033 <span class="comment"> * Update a running CRC with the bytes buf[0..len-1] The CRC should be</span>
<a name="l00034"></a>00034 <span class="comment"> * initialized to all 1&#39;s, and the transmitted value is the 1&#39;s</span>
<a name="l00035"></a>00035 <span class="comment"> * complement of the final running CRC.  The resulting CRC should be</span>
<a name="l00036"></a>00036 <span class="comment"> * transmitted in big endian order.</span>
<a name="l00037"></a>00037 <span class="comment"> */</span>
<a name="l00038"></a>00038 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> 
<a name="l00039"></a>00039 <a class="code" href="group__misc.html#gae618d7f851fdb9e2e0a5abc404010043" title="update running CRC-32Update a running CRC with the bytes buf[0..len-1] The CRC should be initialized ...">gr_update_crc32</a>(<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> crc, <span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *buf, <span class="keywordtype">size_t</span> len);
<a name="l00040"></a>00040 
<a name="l00041"></a>00041 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> 
<a name="l00042"></a>00042 <a class="code" href="group__misc.html#gae618d7f851fdb9e2e0a5abc404010043" title="update running CRC-32Update a running CRC with the bytes buf[0..len-1] The CRC should be initialized ...">gr_update_crc32</a>(<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> crc, <span class="keyword">const</span> std::string buf);
<a name="l00043"></a>00043 
<a name="l00044"></a>00044 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> 
<a name="l00045"></a>00045 <a class="code" href="gr__crc32_8h.html#a464d4c994f076bac0e4babf5d5612ed2">gr_crc32</a>(<span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> *buf, <span class="keywordtype">size_t</span> len);
<a name="l00046"></a>00046 
<a name="l00047"></a>00047 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> 
<a name="l00048"></a>00048 <a class="code" href="gr__crc32_8h.html#a464d4c994f076bac0e4babf5d5612ed2">gr_crc32</a>(<span class="keyword">const</span> std::string buf);
<a name="l00049"></a>00049 
<a name="l00050"></a>00050 <span class="preprocessor">#endif </span><span class="comment">/* INCLUDED_CRC32_H */</span>
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