Google Git
Sign in
android / platform / external / arduino-ide / f876b2abdebd02acfa4ba21e607327be4f9668d4 / . / hardware / arduino / sam / system / CMSIS / CMSIS / Documentation / DSP_Lib / html / structarm__cfft__radix4__instance__f32.html
blob: eba95d4f933aac27236f44d851424a5197db48a6 [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"/>
<title>CMSIS DSP Software Library: arm_cfft_radix4_instance_f32 Struct Reference</title>
<link href="tabs.css" rel="stylesheet" type="text/css"/>
<link href="search/search.css" rel="stylesheet" type="text/css"/>
<script type="text/javaScript" src="search/search.js"></script>
<link href="doxygen.css" rel="stylesheet" type="text/css"/>
</head>
<body onload='searchBox.OnSelectItem(0);'>
<!-- Generated by Doxygen 1.7.2 -->
<script type="text/javascript"><!--
var searchBox = new SearchBox("searchBox", "search",false,'Search');
--></script>
<div class="navigation" id="top">
<div class="tabs">
<ul class="tablist">
<li><a href="index.html"><span>Main&#160;Page</span></a></li>
<li><a href="modules.html"><span>Modules</span></a></li>
<li class="current"><a href="annotated.html"><span>Data&#160;Structures</span></a></li>
<li><a href="files.html"><span>Files</span></a></li>
<li><a href="examples.html"><span>Examples</span></a></li>
<li id="searchli">
<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 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>
<div class="header">
<div class="summary">
<a href="#pub-attribs">Data Fields</a> </div>
<div class="headertitle">
<h1>arm_cfft_radix4_instance_f32 Struct Reference</h1> </div>
</div>
<div class="contents">
<!-- doxytag: class="arm_cfft_radix4_instance_f32" -->
<p>Instance structure for the floating-point CFFT/CIFFT function.
<a href="#_details">More...</a></p>
<p><code>#include &lt;<a class="el" href="arm__math_8h_source.html">arm_math.h</a>&gt;</code></p>
<table class="memberdecls">
<tr><td colspan="2"><h2><a name="pub-attribs"></a>
Data Fields</h2></td></tr>
<tr><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><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><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><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><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><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><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><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>
</table>
<hr/><a name="_details"></a><h2>Detailed Description</h2>
<p>Instance structure for the floating-point CFFT/CIFFT function. </p>
<dl><dt><b>Examples: </b></dt><dd>
<p><a class="el" href="arm_convolution_example_f32_8c-example.html#_a13">arm_convolution_example_f32.c</a>, and <a class="el" href="arm_fft_bin_example_f32_8c-example.html#_a10">arm_fft_bin_example_f32.c</a>.</p>
</dd>
</dl>
<p>Definition at line <a class="el" href="arm__math_8h_source.html#l01919">1919</a> of file <a class="el" href="arm__math_8h_source.html">arm_math.h</a>.</p>
<hr/><h2>Field Documentation</h2>
<a class="anchor" id="a7e6a6d290ce158ce9a15a45e364b021a"></a><!-- doxytag: member="arm_cfft_radix4_instance_f32::fftLen" ref="a7e6a6d290ce158ce9a15a45e364b021a" args="" -->
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">uint16_t <a class="el" href="structarm__cfft__radix4__instance__f32.html#a7e6a6d290ce158ce9a15a45e364b021a">arm_cfft_radix4_instance_f32::fftLen</a></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>length of the FFT. </p>
<p>Definition at line <a class="el" href="arm__math_8h_source.html#l01921">1921</a> of file <a class="el" href="arm__math_8h_source.html">arm_math.h</a>.</p>
</div>
</div>
<a class="anchor" id="a25d1da64dd6487c291f04d226f9acc66"></a><!-- doxytag: member="arm_cfft_radix4_instance_f32::ifftFlag" ref="a25d1da64dd6487c291f04d226f9acc66" args="" -->
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">uint8_t <a class="el" href="structarm__cfft__radix4__instance__f32.html#a25d1da64dd6487c291f04d226f9acc66">arm_cfft_radix4_instance_f32::ifftFlag</a></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>flag that selects forward (ifftFlag=0) or inverse (ifftFlag=1) transform. </p>
<p>Definition at line <a class="el" href="arm__math_8h_source.html#l01922">1922</a> of file <a class="el" href="arm__math_8h_source.html">arm_math.h</a>.</p>
</div>
</div>
<a class="anchor" id="ac10927a1620195a88649ce63dab66120"></a><!-- doxytag: member="arm_cfft_radix4_instance_f32::bitReverseFlag" ref="ac10927a1620195a88649ce63dab66120" args="" -->
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">uint8_t <a class="el" href="structarm__cfft__radix4__instance__f32.html#ac10927a1620195a88649ce63dab66120">arm_cfft_radix4_instance_f32::bitReverseFlag</a></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>flag that enables (bitReverseFlag=1) or disables (bitReverseFlag=0) bit reversal of output. </p>
<p>Definition at line <a class="el" href="arm__math_8h_source.html#l01923">1923</a> of file <a class="el" href="arm__math_8h_source.html">arm_math.h</a>.</p>
</div>
</div>
<a class="anchor" id="a14860c7544911702ca1fa0bf78204ef3"></a><!-- doxytag: member="arm_cfft_radix4_instance_f32::pTwiddle" ref="a14860c7544911702ca1fa0bf78204ef3" args="" -->
<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>* <a class="el" href="structarm__cfft__radix4__instance__f32.html#a14860c7544911702ca1fa0bf78204ef3">arm_cfft_radix4_instance_f32::pTwiddle</a></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>points to the twiddle factor table. </p>
<p>Definition at line <a class="el" href="arm__math_8h_source.html#l01924">1924</a> of file <a class="el" href="arm__math_8h_source.html">arm_math.h</a>.</p>
</div>
</div>
<a class="anchor" id="a8da0d2ca69749fde8cbb95caeac6fe6a"></a><!-- doxytag: member="arm_cfft_radix4_instance_f32::pBitRevTable" ref="a8da0d2ca69749fde8cbb95caeac6fe6a" args="" -->
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">uint16_t* <a class="el" href="structarm__cfft__radix4__instance__f32.html#a8da0d2ca69749fde8cbb95caeac6fe6a">arm_cfft_radix4_instance_f32::pBitRevTable</a></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>points to the bit reversal table. </p>
<p>Definition at line <a class="el" href="arm__math_8h_source.html#l01925">1925</a> of file <a class="el" href="arm__math_8h_source.html">arm_math.h</a>.</p>
</div>
</div>
<a class="anchor" id="abe31ea2157dfa233e389cdfd3b9993ee"></a><!-- doxytag: member="arm_cfft_radix4_instance_f32::twidCoefModifier" ref="abe31ea2157dfa233e389cdfd3b9993ee" args="" -->
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">uint16_t <a class="el" href="structarm__cfft__radix4__instance__f32.html#abe31ea2157dfa233e389cdfd3b9993ee">arm_cfft_radix4_instance_f32::twidCoefModifier</a></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>twiddle coefficient modifier that supports different size FFTs with the same twiddle factor table. </p>
<p>Definition at line <a class="el" href="arm__math_8h_source.html#l01926">1926</a> of file <a class="el" href="arm__math_8h_source.html">arm_math.h</a>.</p>
</div>
</div>
<a class="anchor" id="acc8cb18a8b901b8321ab9d86491e41a3"></a><!-- doxytag: member="arm_cfft_radix4_instance_f32::bitRevFactor" ref="acc8cb18a8b901b8321ab9d86491e41a3" args="" -->
<div class="memitem">
<div class="memproto">
<table class="memname">
<tr>
<td class="memname">uint16_t <a class="el" href="structarm__cfft__radix4__instance__f32.html#acc8cb18a8b901b8321ab9d86491e41a3">arm_cfft_radix4_instance_f32::bitRevFactor</a></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>bit reversal modifier that supports different size FFTs with the same bit reversal table. </p>
<p>Definition at line <a class="el" href="arm__math_8h_source.html#l01927">1927</a> of file <a class="el" href="arm__math_8h_source.html">arm_math.h</a>.</p>
</div>
</div>
<a class="anchor" id="ab9eed39e40b8d7c16381fbccf84467cd"></a><!-- doxytag: member="arm_cfft_radix4_instance_f32::onebyfftLen" ref="ab9eed39e40b8d7c16381fbccf84467cd" args="" -->
<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> <a class="el" href="structarm__cfft__radix4__instance__f32.html#ab9eed39e40b8d7c16381fbccf84467cd">arm_cfft_radix4_instance_f32::onebyfftLen</a></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>value of 1/fftLen. </p>
<p>Definition at line <a class="el" href="arm__math_8h_source.html#l01928">1928</a> of file <a class="el" href="arm__math_8h_source.html">arm_math.h</a>.</p>
</div>
</div>
<hr/>The documentation for this struct was generated from the following file:<ul>
<li><a class="el" href="arm__math_8h_source.html">arm_math.h</a></li>
</ul>
</div>
<!--- 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>Defines</a></div>
<!-- iframe showing the search results (closed by default) -->
<div id="MSearchResultsWindow">
<iframe src="" frameborder="0"
name="MSearchResults" id="MSearchResults">
</iframe>
</div>
<hr class="footer"/><address class="footer"><small>Generated on Fri Jul 15 2011 13:16:22 for CMSIS DSP Software Library by&#160;
<a href="http://www.doxygen.org/index.html">
<img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.7.2 </small></address>
</body>
</html>