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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968" /><title>struct rs_control</title><meta name="generator" content="DocBook XSL Stylesheets V1.78.1" /><link rel="home" href="index.html" title="Reed-Solomon Library Programming Interface" /><link rel="up" href="structs.html" title="Chapter&#160;4.&#160;Structures" /><link rel="prev" href="structs.html" title="Chapter&#160;4.&#160;Structures" /><link rel="next" href="pubfunctions.html" title="Chapter&#160;5.&#160;Public Functions Provided" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center"><span class="phrase">struct rs_control</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="structs.html">Prev</a>&#160;</td><th width="60%" align="center">Chapter&#160;4.&#160;Structures</th><td width="20%" align="right">&#160;<a accesskey="n" href="pubfunctions.html">Next</a></td></tr></table><hr /></div><div class="refentry"><a id="API-struct-rs-control"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>struct rs_control &#8212; 
  rs control structure
 </p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><pre class="programlisting">
struct rs_control {
  int mm;
  int nn;
  uint16_t * alpha_to;
  uint16_t * index_of;
  uint16_t * genpoly;
  int nroots;
  int fcr;
  int prim;
  int iprim;
  int gfpoly;
  int (* gffunc) (int);
  int users;
  struct list_head list;
};  </pre></div><div class="refsect1"><a id="idm139797172539184"></a><h2>Members</h2><div class="variablelist"><dl class="variablelist"><dt><span class="term">mm</span></dt><dd><p>
Bits per symbol
      </p></dd><dt><span class="term">nn</span></dt><dd><p>
Symbols per block (= (1&lt;&lt;mm)-1)
      </p></dd><dt><span class="term">alpha_to</span></dt><dd><p>
log lookup table
      </p></dd><dt><span class="term">index_of</span></dt><dd><p>
Antilog lookup table
      </p></dd><dt><span class="term">genpoly</span></dt><dd><p>
Generator polynomial
      </p></dd><dt><span class="term">nroots</span></dt><dd><p>
Number of generator roots = number of parity symbols
      </p></dd><dt><span class="term">fcr</span></dt><dd><p>
First consecutive root, index form
      </p></dd><dt><span class="term">prim</span></dt><dd><p>
Primitive element, index form
      </p></dd><dt><span class="term">iprim</span></dt><dd><p>
prim-th root of 1, index form
      </p></dd><dt><span class="term">gfpoly</span></dt><dd><p>
The primitive generator polynominal
      </p></dd><dt><span class="term">gffunc</span></dt><dd><p>
Function to generate the field, if non-canonical representation
      </p></dd><dt><span class="term">users</span></dt><dd><p>
Users of this structure
      </p></dd><dt><span class="term">list</span></dt><dd><p>
List entry for the rs control list
      </p></dd></dl></div></div></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="structs.html">Prev</a>&#160;</td><td width="20%" align="center"><a accesskey="u" href="structs.html">Up</a></td><td width="40%" align="right">&#160;<a accesskey="n" href="pubfunctions.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Chapter&#160;4.&#160;Structures&#160;</td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top">&#160;Chapter&#160;5.&#160;Public Functions Provided</td></tr></table></div></body></html>