stm32
/
armfly


			
				
					
						
						
							123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283
							<!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/xhtml;charset=UTF-8"/>
<meta http-equiv="X-UA-Compatible" content="IE=9"/>
<title>CMSIS-DSP: arm_cfft_radix4_instance_f32 Struct Reference</title>
<link href="tabs.css" rel="stylesheet" type="text/css"/>
<link href="cmsis.css" rel="stylesheet" type="text/css" />
<script type="text/javascript" src="jquery.js"></script>
<script type="text/javascript" src="dynsections.js"></script>
<link href="navtree.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="resize.js"></script>
<script type="text/javascript" src="navtree.js"></script>
<script type="text/javascript">
  $(document).ready(initResizable);
</script>
<link href="search/search.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="search/search.js"></script>
<script type="text/javascript">
  $(document).ready(function() { searchBox.OnSelectItem(0); });
</script>
<link href="stylsheetf" rel="stylesheet" type="text/css" />
</head>
<body>
<div id="top"><!-- do not remove this div, it is closed by doxygen! -->
<div id="titlearea">
<table cellspacing="0" cellpadding="0">
 <tbody>
 <tr style="height: 46px;">
  <td id="projectlogo"><img alt="Logo" src="CMSIS_Logo_Final.png"/></td>
  <td style="padding-left: 0.5em;">
   <div id="projectname">CMSIS-DSP
   &#160;<span id="projectnumber">Version 1.4.4</span>
   </div>
   <div id="projectbrief">CMSIS DSP Software Library</div>
  </td>
 </tr>
 </tbody>
</table>
</div>
<!-- end header part -->
<div id="CMSISnav" class="tabs1">
    <ul class="tablist">
      <li><a href="../../General/html/index.html"><span>CMSIS</span></a></li>
      <li><a href="../../Core/html/index.html"><span>CORE</span></a></li>
      <li><a href="../../Driver/html/index.html"><span>Driver</span></a></li>
      <li class="current"><a href="../../DSP/html/index.html"><span>DSP</span></a></li>
      <li><a href="../../RTOS/html/index.html"><span>RTOS API</span></a></li>
      <li><a href="../../Pack/html/index.html"><span>Pack</span></a></li>
      <li><a href="../../SVD/html/index.html"><span>SVD</span></a></li>
    </ul>
</div>
<!-- Generated by Doxygen 1.8.2 -->
<script type="text/javascript">
var searchBox = new SearchBox("searchBox", "search",false,'Search');
</script>
  <div id="navrow1" class="tabs">
    <ul class="tablist">
      <li><a href="index.html"><span>Main&#160;Page</span></a></li>
      <li><a href="pages.html"><span>Usage&#160;and&#160;Description</span></a></li>
      <li><a href="modules.html"><span>Reference</span></a></li>
      <li>
        <div id="MSearchBox" class="MSearchBoxInactive">
        <span class="left">
          <img id="MSearchSelect" src="search/mag_sel.png"
               onmouseover="return searchBox.OnSearchSelectShow()"
               onmouseout="return searchBox.OnSearchSelectHide()"
               alt=""/>
          <input type="text" id="MSearchField" value="Search" accesskey="S"
               onfocus="searchBox.OnSearchFieldFocus(true)" 
               onblur="searchBox.OnSearchFieldFocus(false)" 
               onkeyup="searchBox.OnSearchFieldChange(event)"/>
          </span><span class="right">
            <a id="MSearchClose" href="javascript:searchBox.CloseResultsWindow()"><img id="MSearchCloseImg" border="0" src="search/close.png" alt=""/></a>
          </span>
        </div>
      </li>
    </ul>
  </div>
  <div id="navrow2" class="tabs2">
    <ul class="tablist">
      <li><a href="annotated.html"><span>Data&#160;Structures</span></a></li>
      <li><a href="functions.html"><span>Data&#160;Fields</span></a></li>
    </ul>
  </div>
</div><!-- top -->
<div id="side-nav" class="ui-resizable side-nav-resizable">
  <div id="nav-tree">
    <div id="nav-tree-contents">
      <div id="nav-sync" class="sync"></div>
    </div>
  </div>
  <div id="splitbar" style="-moz-user-select:none;" 
       class="ui-resizable-handle">
  </div>
</div>
<script type="text/javascript">
$(document).ready(function(){initNavTree('structarm__cfft__radix4__instance__f32.html','');});
</script>
<div id="doc-content">
<!-- window showing the filter options -->
<div id="MSearchSelectWindow"
     onmouseover="return searchBox.OnSearchSelectShow()"
     onmouseout="return searchBox.OnSearchSelectHide()"
     onkeydown="return searchBox.OnSearchSelectKey(event)">
<a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(0)"><span class="SelectionMark">&#160;</span>All</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(1)"><span class="SelectionMark">&#160;</span>Data Structures</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(2)"><span class="SelectionMark">&#160;</span>Files</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(3)"><span class="SelectionMark">&#160;</span>Functions</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(4)"><span class="SelectionMark">&#160;</span>Variables</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(5)"><span class="SelectionMark">&#160;</span>Typedefs</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(6)"><span class="SelectionMark">&#160;</span>Enumerations</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(7)"><span class="SelectionMark">&#160;</span>Enumerator</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(8)"><span class="SelectionMark">&#160;</span>Macros</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(9)"><span class="SelectionMark">&#160;</span>Groups</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(10)"><span class="SelectionMark">&#160;</span>Pages</a></div>

<!-- iframe showing the search results (closed by default) -->
<div id="MSearchResultsWindow">
<iframe src="javascript:void(0)" frameborder="0" 
        name="MSearchResults" id="MSearchResults">
</iframe>
</div>

<div class="header">
  <div class="summary">
<a href="#pub-attribs">Data Fields</a>  </div>
  <div class="headertitle">
<div class="title">arm_cfft_radix4_instance_f32 Struct Reference</div>  </div>
</div><!--header-->
<div class="contents">

<p>Instance structure for the floating-point CFFT/CIFFT function.  
 <a href="structarm__cfft__radix4__instance__f32.html#details">More...</a></p>
<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-attribs"></a>
Data Fields</h2></td></tr>
<tr class="memitem:a7e6a6d290ce158ce9a15a45e364b021a"><td class="memItemLeft" align="right" valign="top">uint16_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structarm__cfft__radix4__instance__f32.html#a7e6a6d290ce158ce9a15a45e364b021a">fftLen</a></td></tr>
<tr class="separator:a7e6a6d290ce158ce9a15a45e364b021a"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a25d1da64dd6487c291f04d226f9acc66"><td class="memItemLeft" align="right" valign="top">uint8_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structarm__cfft__radix4__instance__f32.html#a25d1da64dd6487c291f04d226f9acc66">ifftFlag</a></td></tr>
<tr class="separator:a25d1da64dd6487c291f04d226f9acc66"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ac10927a1620195a88649ce63dab66120"><td class="memItemLeft" align="right" valign="top">uint8_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structarm__cfft__radix4__instance__f32.html#ac10927a1620195a88649ce63dab66120">bitReverseFlag</a></td></tr>
<tr class="separator:ac10927a1620195a88649ce63dab66120"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a14860c7544911702ca1fa0bf78204ef3"><td class="memItemLeft" align="right" valign="top"><a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structarm__cfft__radix4__instance__f32.html#a14860c7544911702ca1fa0bf78204ef3">pTwiddle</a></td></tr>
<tr class="separator:a14860c7544911702ca1fa0bf78204ef3"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a8da0d2ca69749fde8cbb95caeac6fe6a"><td class="memItemLeft" align="right" valign="top">uint16_t *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structarm__cfft__radix4__instance__f32.html#a8da0d2ca69749fde8cbb95caeac6fe6a">pBitRevTable</a></td></tr>
<tr class="separator:a8da0d2ca69749fde8cbb95caeac6fe6a"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:abe31ea2157dfa233e389cdfd3b9993ee"><td class="memItemLeft" align="right" valign="top">uint16_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structarm__cfft__radix4__instance__f32.html#abe31ea2157dfa233e389cdfd3b9993ee">twidCoefModifier</a></td></tr>
<tr class="separator:abe31ea2157dfa233e389cdfd3b9993ee"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:acc8cb18a8b901b8321ab9d86491e41a3"><td class="memItemLeft" align="right" valign="top">uint16_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structarm__cfft__radix4__instance__f32.html#acc8cb18a8b901b8321ab9d86491e41a3">bitRevFactor</a></td></tr>
<tr class="separator:acc8cb18a8b901b8321ab9d86491e41a3"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ab9eed39e40b8d7c16381fbccf84467cd"><td class="memItemLeft" align="right" valign="top"><a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structarm__cfft__radix4__instance__f32.html#ab9eed39e40b8d7c16381fbccf84467cd">onebyfftLen</a></td></tr>
<tr class="separator:ab9eed39e40b8d7c16381fbccf84467cd"><td class="memSeparator" colspan="2">&#160;</td></tr>
</table>
<a name="details" id="details"></a><h2 class="groupheader">Description</h2>
<div class="textblock"><dl><dt><b>Examples: </b></dt><dd><a class="el" href="arm_convolution_example_f32_8c-example.html#_a13">arm_convolution_example_f32.c</a>.</dd>
</dl></div><h2 class="groupheader">Field Documentation</h2>
<a class="anchor" id="ac10927a1620195a88649ce63dab66120"></a>
<div class="memitem">
<div class="memproto">
      <table class="memname">
        <tr>
          <td class="memname">uint8_t arm_cfft_radix4_instance_f32::bitReverseFlag</td>
        </tr>
      </table>
</div><div class="memdoc">
<p>flag that enables (bitReverseFlag=1) or disables (bitReverseFlag=0) bit reversal of output. </p>

<p>Referenced by <a class="el" href="group___complex_f_f_t.html#ga521f670cd9c571bc61aff9bec89f4c26">arm_cfft_radix4_f32()</a>, and <a class="el" href="group___complex_f_f_t.html#gaf336459f684f0b17bfae539ef1b1b78a">arm_cfft_radix4_init_f32()</a>.</p>

</div>
</div>
<a class="anchor" id="acc8cb18a8b901b8321ab9d86491e41a3"></a>
<div class="memitem">
<div class="memproto">
      <table class="memname">
        <tr>
          <td class="memname">uint16_t arm_cfft_radix4_instance_f32::bitRevFactor</td>
        </tr>
      </table>
</div><div class="memdoc">
<p>bit reversal modifier that supports different size FFTs with the same bit reversal table. </p>

<p>Referenced by <a class="el" href="group___complex_f_f_t.html#ga521f670cd9c571bc61aff9bec89f4c26">arm_cfft_radix4_f32()</a>, <a class="el" href="group___complex_f_f_t.html#gaf336459f684f0b17bfae539ef1b1b78a">arm_cfft_radix4_init_f32()</a>, and <a class="el" href="group___real_f_f_t.html#ga3df1766d230532bc068fc4ed69d0fcdc">arm_rfft_f32()</a>.</p>

</div>
</div>
<a class="anchor" id="a7e6a6d290ce158ce9a15a45e364b021a"></a>
<div class="memitem">
<div class="memproto">
      <table class="memname">
        <tr>
          <td class="memname">uint16_t arm_cfft_radix4_instance_f32::fftLen</td>
        </tr>
      </table>
</div><div class="memdoc">
<p>length of the FFT. </p>

<p>Referenced by <a class="el" href="group___complex_f_f_t.html#ga521f670cd9c571bc61aff9bec89f4c26">arm_cfft_radix4_f32()</a>, <a class="el" href="group___complex_f_f_t.html#gaf336459f684f0b17bfae539ef1b1b78a">arm_cfft_radix4_init_f32()</a>, and <a class="el" href="group___real_f_f_t.html#ga3df1766d230532bc068fc4ed69d0fcdc">arm_rfft_f32()</a>.</p>

</div>
</div>
<a class="anchor" id="a25d1da64dd6487c291f04d226f9acc66"></a>
<div class="memitem">
<div class="memproto">
      <table class="memname">
        <tr>
          <td class="memname">uint8_t arm_cfft_radix4_instance_f32::ifftFlag</td>
        </tr>
      </table>
</div><div class="memdoc">
<p>flag that selects forward (ifftFlag=0) or inverse (ifftFlag=1) transform. </p>

<p>Referenced by <a class="el" href="group___complex_f_f_t.html#ga521f670cd9c571bc61aff9bec89f4c26">arm_cfft_radix4_f32()</a>, and <a class="el" href="group___complex_f_f_t.html#gaf336459f684f0b17bfae539ef1b1b78a">arm_cfft_radix4_init_f32()</a>.</p>

</div>
</div>
<a class="anchor" id="ab9eed39e40b8d7c16381fbccf84467cd"></a>
<div class="memitem">
<div class="memproto">
      <table class="memname">
        <tr>
          <td class="memname"><a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> arm_cfft_radix4_instance_f32::onebyfftLen</td>
        </tr>
      </table>
</div><div class="memdoc">
<p>value of 1/fftLen. </p>

<p>Referenced by <a class="el" href="group___complex_f_f_t.html#ga521f670cd9c571bc61aff9bec89f4c26">arm_cfft_radix4_f32()</a>, <a class="el" href="group___complex_f_f_t.html#gaf336459f684f0b17bfae539ef1b1b78a">arm_cfft_radix4_init_f32()</a>, and <a class="el" href="group___real_f_f_t.html#ga3df1766d230532bc068fc4ed69d0fcdc">arm_rfft_f32()</a>.</p>

</div>
</div>
<a class="anchor" id="a8da0d2ca69749fde8cbb95caeac6fe6a"></a>
<div class="memitem">
<div class="memproto">
      <table class="memname">
        <tr>
          <td class="memname">uint16_t* arm_cfft_radix4_instance_f32::pBitRevTable</td>
        </tr>
      </table>
</div><div class="memdoc">
<p>points to the bit reversal table. </p>

<p>Referenced by <a class="el" href="group___complex_f_f_t.html#ga521f670cd9c571bc61aff9bec89f4c26">arm_cfft_radix4_f32()</a>, <a class="el" href="group___complex_f_f_t.html#gaf336459f684f0b17bfae539ef1b1b78a">arm_cfft_radix4_init_f32()</a>, and <a class="el" href="group___real_f_f_t.html#ga3df1766d230532bc068fc4ed69d0fcdc">arm_rfft_f32()</a>.</p>

</div>
</div>
<a class="anchor" id="a14860c7544911702ca1fa0bf78204ef3"></a>
<div class="memitem">
<div class="memproto">
      <table class="memname">
        <tr>
          <td class="memname"><a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a>* arm_cfft_radix4_instance_f32::pTwiddle</td>
        </tr>
      </table>
</div><div class="memdoc">
<p>points to the Twiddle factor table. </p>

<p>Referenced by <a class="el" href="group___complex_f_f_t.html#ga521f670cd9c571bc61aff9bec89f4c26">arm_cfft_radix4_f32()</a>, <a class="el" href="group___complex_f_f_t.html#gaf336459f684f0b17bfae539ef1b1b78a">arm_cfft_radix4_init_f32()</a>, and <a class="el" href="group___real_f_f_t.html#ga3df1766d230532bc068fc4ed69d0fcdc">arm_rfft_f32()</a>.</p>

</div>
</div>
<a class="anchor" id="abe31ea2157dfa233e389cdfd3b9993ee"></a>
<div class="memitem">
<div class="memproto">
      <table class="memname">
        <tr>
          <td class="memname">uint16_t arm_cfft_radix4_instance_f32::twidCoefModifier</td>
        </tr>
      </table>
</div><div class="memdoc">
<p>twiddle coefficient modifier that supports different size FFTs with the same twiddle factor table. </p>

<p>Referenced by <a class="el" href="group___complex_f_f_t.html#ga521f670cd9c571bc61aff9bec89f4c26">arm_cfft_radix4_f32()</a>, <a class="el" href="group___complex_f_f_t.html#gaf336459f684f0b17bfae539ef1b1b78a">arm_cfft_radix4_init_f32()</a>, and <a class="el" href="group___real_f_f_t.html#ga3df1766d230532bc068fc4ed69d0fcdc">arm_rfft_f32()</a>.</p>

</div>
</div>
</div><!-- contents -->
</div><!-- doc-content -->
<!-- start footer part -->
<div id="nav-path" class="navpath"><!-- id is needed for treeview function! -->
  <ul>
    <li class="navelem"><a class="el" href="structarm__cfft__radix4__instance__f32.html">arm_cfft_radix4_instance_f32</a></li>
    <li class="footer">Generated on Tue Sep 23 2014 18:52:44 for CMSIS-DSP by ARM Ltd. All rights reserved.
	<!--
    <a href="http://www.doxygen.org/index.html">
    <img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.8.2 
	-->
	</li>
  </ul>
</div>
</body>
</html>