blob: bb4c5a76855842b058c89b4a506d65f7097af63d [file] [log] [blame]
<!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>arm_cfft_radix2_instance_q31 Struct Reference</title>
<title>CMSIS-DSP: arm_cfft_radix2_instance_q31 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>
<script type="text/javascript" src="printComponentTabs.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);
$(window).load(resizeHeight);
</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>
</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 1.7.0</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">
<script type="text/javascript">
<!--
writeComponentTabs.call(this);
//-->
</script>
</ul>
</div>
<!-- Generated by Doxygen 1.8.6 -->
<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__radix2__instance__q31.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_radix2_instance_q31 Struct Reference</div> </div>
</div><!--header-->
<div class="contents">
<p>Instance structure for the Radix-2 Q31 CFFT/CIFFT function.
</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:a960199f1373a192366878ef279eab00f"><td class="memItemLeft" align="right" valign="top">uint16_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structarm__cfft__radix2__instance__q31.html#a960199f1373a192366878ef279eab00f">fftLen</a></td></tr>
<tr class="separator:a960199f1373a192366878ef279eab00f"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a2607378ce64be16698bb8a3b1af8d3c8"><td class="memItemLeft" align="right" valign="top">uint8_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structarm__cfft__radix2__instance__q31.html#a2607378ce64be16698bb8a3b1af8d3c8">ifftFlag</a></td></tr>
<tr class="separator:a2607378ce64be16698bb8a3b1af8d3c8"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a6239b8d268285334e88c008c07d68616"><td class="memItemLeft" align="right" valign="top">uint8_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structarm__cfft__radix2__instance__q31.html#a6239b8d268285334e88c008c07d68616">bitReverseFlag</a></td></tr>
<tr class="separator:a6239b8d268285334e88c008c07d68616"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a6a965fcf4ba88bd2661a263a5f18a6b1"><td class="memItemLeft" align="right" valign="top">const <a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structarm__cfft__radix2__instance__q31.html#a6a965fcf4ba88bd2661a263a5f18a6b1">pTwiddle</a></td></tr>
<tr class="separator:a6a965fcf4ba88bd2661a263a5f18a6b1"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:adf510de23a78c9119e0442f7f35efcd1"><td class="memItemLeft" align="right" valign="top">const uint16_t *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structarm__cfft__radix2__instance__q31.html#adf510de23a78c9119e0442f7f35efcd1">pBitRevTable</a></td></tr>
<tr class="separator:adf510de23a78c9119e0442f7f35efcd1"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ae63ca9193322cd477970c1d2086407d1"><td class="memItemLeft" align="right" valign="top">uint16_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structarm__cfft__radix2__instance__q31.html#ae63ca9193322cd477970c1d2086407d1">twidCoefModifier</a></td></tr>
<tr class="separator:ae63ca9193322cd477970c1d2086407d1"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a9d17a87263953fe3559a007512c9f3a4"><td class="memItemLeft" align="right" valign="top">uint16_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="structarm__cfft__radix2__instance__q31.html#a9d17a87263953fe3559a007512c9f3a4">bitRevFactor</a></td></tr>
<tr class="separator:a9d17a87263953fe3559a007512c9f3a4"><td class="memSeparator" colspan="2">&#160;</td></tr>
</table>
<h2 class="groupheader">Field Documentation</h2>
<a class="anchor" id="a6239b8d268285334e88c008c07d68616"></a>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">uint8_t arm_cfft_radix2_instance_q31::bitReverseFlag</td>
</tr>
</table>
</div><div class="memdoc">
<p>flag that enables (bitReverseFlag=1) or disables (bitReverseFlag=0) bit reversal of output. </p>
</div>
</div>
<a class="anchor" id="a9d17a87263953fe3559a007512c9f3a4"></a>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">uint16_t arm_cfft_radix2_instance_q31::bitRevFactor</td>
</tr>
</table>
</div><div class="memdoc">
<p>bit reversal modifier that supports different size FFTs with the same bit reversal table. </p>
</div>
</div>
<a class="anchor" id="a960199f1373a192366878ef279eab00f"></a>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">uint16_t arm_cfft_radix2_instance_q31::fftLen</td>
</tr>
</table>
</div><div class="memdoc">
<p>length of the FFT. </p>
</div>
</div>
<a class="anchor" id="a2607378ce64be16698bb8a3b1af8d3c8"></a>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">uint8_t arm_cfft_radix2_instance_q31::ifftFlag</td>
</tr>
</table>
</div><div class="memdoc">
<p>flag that selects forward (ifftFlag=0) or inverse (ifftFlag=1) transform. </p>
</div>
</div>
<a class="anchor" id="adf510de23a78c9119e0442f7f35efcd1"></a>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">const uint16_t* arm_cfft_radix2_instance_q31::pBitRevTable</td>
</tr>
</table>
</div><div class="memdoc">
<p>points to the bit reversal table. </p>
</div>
</div>
<a class="anchor" id="a6a965fcf4ba88bd2661a263a5f18a6b1"></a>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">const <a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a>* arm_cfft_radix2_instance_q31::pTwiddle</td>
</tr>
</table>
</div><div class="memdoc">
<p>points to the Twiddle factor table. </p>
</div>
</div>
<a class="anchor" id="ae63ca9193322cd477970c1d2086407d1"></a>
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">uint16_t arm_cfft_radix2_instance_q31::twidCoefModifier</td>
</tr>
</table>
</div><div class="memdoc">
<p>twiddle coefficient modifier that supports different size FFTs with the same twiddle factor table. </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__radix2__instance__q31.html">arm_cfft_radix2_instance_q31</a></li>
<li class="footer">Generated on Wed Jul 10 2019 15:20:40 for CMSIS-DSP Version 1.7.0 by Arm Ltd. All rights reserved.
<!--
<a href="http://www.doxygen.org/index.html">
<img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.8.6
-->
</li>
</ul>
</div>
</body>
</html>