| <!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_radix4_instance_q31 Struct Reference</title> |
| <title>CMSIS-DSP: arm_cfft_radix4_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); |
| </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 |
|  <span id="projectnumber">Version 1.4.7</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 1.8.2 --> |
| <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 Page</span></a></li> |
| <li><a href="pages.html"><span>Usage and 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 Structures</span></a></li> |
| <li><a href="functions.html"><span>Data 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__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"> </span>All</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(1)"><span class="SelectionMark"> </span>Data Structures</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(2)"><span class="SelectionMark"> </span>Files</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(3)"><span class="SelectionMark"> </span>Functions</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(4)"><span class="SelectionMark"> </span>Variables</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(5)"><span class="SelectionMark"> </span>Typedefs</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(6)"><span class="SelectionMark"> </span>Enumerations</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(7)"><span class="SelectionMark"> </span>Enumerator</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(8)"><span class="SelectionMark"> </span>Macros</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(9)"><span class="SelectionMark"> </span>Groups</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(10)"><span class="SelectionMark"> </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_q31 Struct Reference</div> </div> |
| </div><!--header--> |
| <div class="contents"> |
| |
| <p>Instance structure for the 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:ab413d2a5d3f45fa187d93813bf3bf81b"><td class="memItemLeft" align="right" valign="top">uint16_t </td><td class="memItemRight" valign="bottom"><a class="el" href="structarm__cfft__radix4__instance__q31.html#ab413d2a5d3f45fa187d93813bf3bf81b">fftLen</a></td></tr> |
| <tr class="separator:ab413d2a5d3f45fa187d93813bf3bf81b"><td class="memSeparator" colspan="2"> </td></tr> |
| <tr class="memitem:adc0a62ba669ad2282ecbe43d5d96abab"><td class="memItemLeft" align="right" valign="top">uint8_t </td><td class="memItemRight" valign="bottom"><a class="el" href="structarm__cfft__radix4__instance__q31.html#adc0a62ba669ad2282ecbe43d5d96abab">ifftFlag</a></td></tr> |
| <tr class="separator:adc0a62ba669ad2282ecbe43d5d96abab"><td class="memSeparator" colspan="2"> </td></tr> |
| <tr class="memitem:a5a7c4f4c7b3fb655cbb2bc11ef160a2a"><td class="memItemLeft" align="right" valign="top">uint8_t </td><td class="memItemRight" valign="bottom"><a class="el" href="structarm__cfft__radix4__instance__q31.html#a5a7c4f4c7b3fb655cbb2bc11ef160a2a">bitReverseFlag</a></td></tr> |
| <tr class="separator:a5a7c4f4c7b3fb655cbb2bc11ef160a2a"><td class="memSeparator" colspan="2"> </td></tr> |
| <tr class="memitem:a561c22dee4cbdcfa0fd5f15106ecc306"><td class="memItemLeft" align="right" valign="top"><a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="structarm__cfft__radix4__instance__q31.html#a561c22dee4cbdcfa0fd5f15106ecc306">pTwiddle</a></td></tr> |
| <tr class="separator:a561c22dee4cbdcfa0fd5f15106ecc306"><td class="memSeparator" colspan="2"> </td></tr> |
| <tr class="memitem:a33a3bc774c97373261699463c05dfe54"><td class="memItemLeft" align="right" valign="top">uint16_t * </td><td class="memItemRight" valign="bottom"><a class="el" href="structarm__cfft__radix4__instance__q31.html#a33a3bc774c97373261699463c05dfe54">pBitRevTable</a></td></tr> |
| <tr class="separator:a33a3bc774c97373261699463c05dfe54"><td class="memSeparator" colspan="2"> </td></tr> |
| <tr class="memitem:a8cf8187b8232815cf17ee82bf572ecf9"><td class="memItemLeft" align="right" valign="top">uint16_t </td><td class="memItemRight" valign="bottom"><a class="el" href="structarm__cfft__radix4__instance__q31.html#a8cf8187b8232815cf17ee82bf572ecf9">twidCoefModifier</a></td></tr> |
| <tr class="separator:a8cf8187b8232815cf17ee82bf572ecf9"><td class="memSeparator" colspan="2"> </td></tr> |
| <tr class="memitem:a94d2fead4efa4d5eaae142bbe30b0e15"><td class="memItemLeft" align="right" valign="top">uint16_t </td><td class="memItemRight" valign="bottom"><a class="el" href="structarm__cfft__radix4__instance__q31.html#a94d2fead4efa4d5eaae142bbe30b0e15">bitRevFactor</a></td></tr> |
| <tr class="separator:a94d2fead4efa4d5eaae142bbe30b0e15"><td class="memSeparator" colspan="2"> </td></tr> |
| </table> |
| <h2 class="groupheader">Field Documentation</h2> |
| <a class="anchor" id="a5a7c4f4c7b3fb655cbb2bc11ef160a2a"></a> |
| <div class="memitem"> |
| <div class="memproto"> |
| <table class="memname"> |
| <tr> |
| <td class="memname">uint8_t arm_cfft_radix4_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> |
| |
| <p>Referenced by <a class="el" href="group___complex_f_f_t.html#gad5caaafeec900c8ff72321c01bbd462c">arm_cfft_radix4_init_q31()</a>, and <a class="el" href="group___complex_f_f_t.html#gafde3ee1f58cf393b45a9073174fff548">arm_cfft_radix4_q31()</a>.</p> |
| |
| </div> |
| </div> |
| <a class="anchor" id="a94d2fead4efa4d5eaae142bbe30b0e15"></a> |
| <div class="memitem"> |
| <div class="memproto"> |
| <table class="memname"> |
| <tr> |
| <td class="memname">uint16_t arm_cfft_radix4_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> |
| |
| <p>Referenced by <a class="el" href="group___complex_f_f_t.html#gad5caaafeec900c8ff72321c01bbd462c">arm_cfft_radix4_init_q31()</a>, and <a class="el" href="group___complex_f_f_t.html#gafde3ee1f58cf393b45a9073174fff548">arm_cfft_radix4_q31()</a>.</p> |
| |
| </div> |
| </div> |
| <a class="anchor" id="ab413d2a5d3f45fa187d93813bf3bf81b"></a> |
| <div class="memitem"> |
| <div class="memproto"> |
| <table class="memname"> |
| <tr> |
| <td class="memname">uint16_t arm_cfft_radix4_instance_q31::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#gad5caaafeec900c8ff72321c01bbd462c">arm_cfft_radix4_init_q31()</a>, and <a class="el" href="group___complex_f_f_t.html#gafde3ee1f58cf393b45a9073174fff548">arm_cfft_radix4_q31()</a>.</p> |
| |
| </div> |
| </div> |
| <a class="anchor" id="adc0a62ba669ad2282ecbe43d5d96abab"></a> |
| <div class="memitem"> |
| <div class="memproto"> |
| <table class="memname"> |
| <tr> |
| <td class="memname">uint8_t arm_cfft_radix4_instance_q31::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#gad5caaafeec900c8ff72321c01bbd462c">arm_cfft_radix4_init_q31()</a>, and <a class="el" href="group___complex_f_f_t.html#gafde3ee1f58cf393b45a9073174fff548">arm_cfft_radix4_q31()</a>.</p> |
| |
| </div> |
| </div> |
| <a class="anchor" id="a33a3bc774c97373261699463c05dfe54"></a> |
| <div class="memitem"> |
| <div class="memproto"> |
| <table class="memname"> |
| <tr> |
| <td class="memname">uint16_t* arm_cfft_radix4_instance_q31::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#gad5caaafeec900c8ff72321c01bbd462c">arm_cfft_radix4_init_q31()</a>, and <a class="el" href="group___complex_f_f_t.html#gafde3ee1f58cf393b45a9073174fff548">arm_cfft_radix4_q31()</a>.</p> |
| |
| </div> |
| </div> |
| <a class="anchor" id="a561c22dee4cbdcfa0fd5f15106ecc306"></a> |
| <div class="memitem"> |
| <div class="memproto"> |
| <table class="memname"> |
| <tr> |
| <td class="memname"><a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a>* arm_cfft_radix4_instance_q31::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#gad5caaafeec900c8ff72321c01bbd462c">arm_cfft_radix4_init_q31()</a>, and <a class="el" href="group___complex_f_f_t.html#gafde3ee1f58cf393b45a9073174fff548">arm_cfft_radix4_q31()</a>.</p> |
| |
| </div> |
| </div> |
| <a class="anchor" id="a8cf8187b8232815cf17ee82bf572ecf9"></a> |
| <div class="memitem"> |
| <div class="memproto"> |
| <table class="memname"> |
| <tr> |
| <td class="memname">uint16_t arm_cfft_radix4_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> |
| |
| <p>Referenced by <a class="el" href="group___complex_f_f_t.html#gad5caaafeec900c8ff72321c01bbd462c">arm_cfft_radix4_init_q31()</a>, and <a class="el" href="group___complex_f_f_t.html#gafde3ee1f58cf393b45a9073174fff548">arm_cfft_radix4_q31()</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__q31.html">arm_cfft_radix4_instance_q31</a></li> |
| <li class="footer">Generated on Tue Oct 27 2015 14:35:33 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> |