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Diffstat (limited to 'CMSIS/Documentation/DSP/html/group___c_f_f_t___c_i_f_f_t.html')
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diff --git a/CMSIS/Documentation/DSP/html/group___c_f_f_t___c_i_f_f_t.html b/CMSIS/Documentation/DSP/html/group___c_f_f_t___c_i_f_f_t.html new file mode 100644 index 0000000..40eab00 --- /dev/null +++ b/CMSIS/Documentation/DSP/html/group___c_f_f_t___c_i_f_f_t.html @@ -0,0 +1,800 @@ +<!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>Complex FFT Tables</title> +<title>CMSIS-DSP: Complex FFT Tables</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><!-- 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('group___c_f_f_t___c_i_f_f_t.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="#var-members">Variables</a> </div> + <div class="headertitle"> +<div class="title">Complex FFT Tables</div> </div> +<div class="ingroups"><a class="el" href="group__group_transforms.html">Transform Functions</a></div></div><!--header--> +<div class="contents"> +<table class="memberdecls"> +<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="var-members"></a> +Variables</h2></td></tr> +<tr class="memitem:gae247e83ad50d474107254e25b36ad42b"><td class="memItemLeft" align="right" valign="top">const uint16_t </td><td class="memItemRight" valign="bottom"><a class="el" href="group___c_f_f_t___c_i_f_f_t.html#gae247e83ad50d474107254e25b36ad42b">armBitRevTable</a> [1024]</td></tr> +<tr class="separator:gae247e83ad50d474107254e25b36ad42b"><td class="memSeparator" colspan="2"> </td></tr> +<tr class="memitem:gae75e243ec61706427314270f222e0c8e"><td class="memItemLeft" align="right" valign="top">const <a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group___c_f_f_t___c_i_f_f_t.html#gae75e243ec61706427314270f222e0c8e">twiddleCoef_16</a> [32]</td></tr> +<tr class="separator:gae75e243ec61706427314270f222e0c8e"><td class="memSeparator" colspan="2"> </td></tr> +<tr class="memitem:ga78a72c85d88185de98050c930cfc76e3"><td class="memItemLeft" align="right" valign="top">const <a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group___c_f_f_t___c_i_f_f_t.html#ga78a72c85d88185de98050c930cfc76e3">twiddleCoef_32</a> [64]</td></tr> +<tr class="separator:ga78a72c85d88185de98050c930cfc76e3"><td class="memSeparator" colspan="2"> </td></tr> +<tr class="memitem:ga4f3c6d98c7e66393b4ef3ac63746e43d"><td class="memItemLeft" align="right" valign="top">const <a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group___c_f_f_t___c_i_f_f_t.html#ga4f3c6d98c7e66393b4ef3ac63746e43d">twiddleCoef_64</a> [128]</td></tr> +<tr class="separator:ga4f3c6d98c7e66393b4ef3ac63746e43d"><td class="memSeparator" colspan="2"> </td></tr> +<tr class="memitem:ga948433536dafaac1381decfccf4e2d9c"><td class="memItemLeft" align="right" valign="top">const <a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group___c_f_f_t___c_i_f_f_t.html#ga948433536dafaac1381decfccf4e2d9c">twiddleCoef_128</a> [256]</td></tr> +<tr class="separator:ga948433536dafaac1381decfccf4e2d9c"><td class="memSeparator" colspan="2"> </td></tr> +<tr class="memitem:gafe813758a03a798e972359a092315be4"><td class="memItemLeft" align="right" valign="top">const <a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group___c_f_f_t___c_i_f_f_t.html#gafe813758a03a798e972359a092315be4">twiddleCoef_256</a> [512]</td></tr> +<tr class="separator:gafe813758a03a798e972359a092315be4"><td class="memSeparator" colspan="2"> </td></tr> +<tr class="memitem:gad8830f0c068ab2cc19f2f87d220fa148"><td class="memItemLeft" align="right" valign="top">const <a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group___c_f_f_t___c_i_f_f_t.html#gad8830f0c068ab2cc19f2f87d220fa148">twiddleCoef_512</a> [1024]</td></tr> +<tr class="separator:gad8830f0c068ab2cc19f2f87d220fa148"><td class="memSeparator" colspan="2"> </td></tr> +<tr class="memitem:ga27c056eb130a4333d1cc5dd43ec738b1"><td class="memItemLeft" align="right" valign="top">const <a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group___c_f_f_t___c_i_f_f_t.html#ga27c056eb130a4333d1cc5dd43ec738b1">twiddleCoef_1024</a> [2048]</td></tr> +<tr class="separator:ga27c056eb130a4333d1cc5dd43ec738b1"><td class="memSeparator" colspan="2"> </td></tr> +<tr class="memitem:ga23e7f30421a7905b21c2015429779633"><td class="memItemLeft" align="right" valign="top">const <a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group___c_f_f_t___c_i_f_f_t.html#ga23e7f30421a7905b21c2015429779633">twiddleCoef_2048</a> [4096]</td></tr> +<tr class="separator:ga23e7f30421a7905b21c2015429779633"><td class="memSeparator" colspan="2"> </td></tr> +<tr class="memitem:gae0182d1dd3b2f21aad4e38a815a0bd40"><td class="memItemLeft" align="right" valign="top">const <a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group___c_f_f_t___c_i_f_f_t.html#gae0182d1dd3b2f21aad4e38a815a0bd40">twiddleCoef_4096</a> [8192]</td></tr> +<tr class="separator:gae0182d1dd3b2f21aad4e38a815a0bd40"><td class="memSeparator" colspan="2"> </td></tr> +<tr class="memitem:gaef4697e1ba348c4ac9358f2b9e279e93"><td class="memItemLeft" align="right" valign="top">const <a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group___c_f_f_t___c_i_f_f_t.html#gaef4697e1ba348c4ac9358f2b9e279e93">twiddleCoef_16_q31</a> [24]</td></tr> +<tr class="separator:gaef4697e1ba348c4ac9358f2b9e279e93"><td class="memSeparator" colspan="2"> </td></tr> +<tr class="memitem:ga8ba78d5e6ef4bdc58e8f0044e0664a0a"><td class="memItemLeft" align="right" valign="top">const <a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group___c_f_f_t___c_i_f_f_t.html#ga8ba78d5e6ef4bdc58e8f0044e0664a0a">twiddleCoef_32_q31</a> [48]</td></tr> +<tr class="separator:ga8ba78d5e6ef4bdc58e8f0044e0664a0a"><td class="memSeparator" colspan="2"> </td></tr> +<tr class="memitem:ga6e0a7e941a25a0d74b2e6590307de47e"><td class="memItemLeft" align="right" valign="top">const <a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group___c_f_f_t___c_i_f_f_t.html#ga6e0a7e941a25a0d74b2e6590307de47e">twiddleCoef_64_q31</a> [96]</td></tr> +<tr class="separator:ga6e0a7e941a25a0d74b2e6590307de47e"><td class="memSeparator" colspan="2"> </td></tr> +<tr class="memitem:gafecf9ed9873415d9f5f17f37b30c7250"><td class="memItemLeft" align="right" valign="top">const <a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group___c_f_f_t___c_i_f_f_t.html#gafecf9ed9873415d9f5f17f37b30c7250">twiddleCoef_128_q31</a> [192]</td></tr> +<tr class="separator:gafecf9ed9873415d9f5f17f37b30c7250"><td class="memSeparator" colspan="2"> </td></tr> +<tr class="memitem:gaef1ea005053b715b851cf5f908168ede"><td class="memItemLeft" align="right" valign="top">const <a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group___c_f_f_t___c_i_f_f_t.html#gaef1ea005053b715b851cf5f908168ede">twiddleCoef_256_q31</a> [384]</td></tr> +<tr class="separator:gaef1ea005053b715b851cf5f908168ede"><td class="memSeparator" colspan="2"> </td></tr> +<tr class="memitem:ga416c61b2f08542a39111e06b0378bebe"><td class="memItemLeft" align="right" valign="top">const <a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group___c_f_f_t___c_i_f_f_t.html#ga416c61b2f08542a39111e06b0378bebe">twiddleCoef_512_q31</a> [768]</td></tr> +<tr class="separator:ga416c61b2f08542a39111e06b0378bebe"><td class="memSeparator" colspan="2"> </td></tr> +<tr class="memitem:ga514443c44b62b8b3d240afefebcda310"><td class="memItemLeft" align="right" valign="top">const <a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group___c_f_f_t___c_i_f_f_t.html#ga514443c44b62b8b3d240afefebcda310">twiddleCoef_1024_q31</a> [1536]</td></tr> +<tr class="separator:ga514443c44b62b8b3d240afefebcda310"><td class="memSeparator" colspan="2"> </td></tr> +<tr class="memitem:ga9c5767de9f5a409fd0c2027e6ac67179"><td class="memItemLeft" align="right" valign="top">const <a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group___c_f_f_t___c_i_f_f_t.html#ga9c5767de9f5a409fd0c2027e6ac67179">twiddleCoef_2048_q31</a> [3072]</td></tr> +<tr class="separator:ga9c5767de9f5a409fd0c2027e6ac67179"><td class="memSeparator" colspan="2"> </td></tr> +<tr class="memitem:ga67c0890317deab3391e276f22c1fc400"><td class="memItemLeft" align="right" valign="top">const <a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group___c_f_f_t___c_i_f_f_t.html#ga67c0890317deab3391e276f22c1fc400">twiddleCoef_4096_q31</a> [6144]</td></tr> +<tr class="separator:ga67c0890317deab3391e276f22c1fc400"><td class="memSeparator" colspan="2"> </td></tr> +<tr class="memitem:ga8e4e2e05f4a3112184c96cb3308d6c39"><td class="memItemLeft" align="right" valign="top">const <a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group___c_f_f_t___c_i_f_f_t.html#ga8e4e2e05f4a3112184c96cb3308d6c39">twiddleCoef_16_q15</a> [24]</td></tr> +<tr class="separator:ga8e4e2e05f4a3112184c96cb3308d6c39"><td class="memSeparator" colspan="2"> </td></tr> +<tr class="memitem:gac194a4fe04a19051ae1811f69c6e5df2"><td class="memItemLeft" align="right" valign="top">const <a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group___c_f_f_t___c_i_f_f_t.html#gac194a4fe04a19051ae1811f69c6e5df2">twiddleCoef_32_q15</a> [48]</td></tr> +<tr class="separator:gac194a4fe04a19051ae1811f69c6e5df2"><td class="memSeparator" colspan="2"> </td></tr> +<tr class="memitem:gaa0cc411e0b3c82078e85cfdf1b84290f"><td class="memItemLeft" align="right" valign="top">const <a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group___c_f_f_t___c_i_f_f_t.html#gaa0cc411e0b3c82078e85cfdf1b84290f">twiddleCoef_64_q15</a> [96]</td></tr> +<tr class="separator:gaa0cc411e0b3c82078e85cfdf1b84290f"><td class="memSeparator" colspan="2"> </td></tr> +<tr class="memitem:gabfdd1c5cd2b3f96da5fe5f07c707a8e5"><td class="memItemLeft" align="right" valign="top">const <a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group___c_f_f_t___c_i_f_f_t.html#gabfdd1c5cd2b3f96da5fe5f07c707a8e5">twiddleCoef_128_q15</a> [192]</td></tr> +<tr class="separator:gabfdd1c5cd2b3f96da5fe5f07c707a8e5"><td class="memSeparator" colspan="2"> </td></tr> +<tr class="memitem:ga6099ae5262a0a3a8d9ce1e6da02f0c2e"><td class="memItemLeft" align="right" valign="top">const <a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group___c_f_f_t___c_i_f_f_t.html#ga6099ae5262a0a3a8d9ce1e6da02f0c2e">twiddleCoef_256_q15</a> [384]</td></tr> +<tr class="separator:ga6099ae5262a0a3a8d9ce1e6da02f0c2e"><td class="memSeparator" colspan="2"> </td></tr> +<tr class="memitem:ga6152621af210f847128c6f38958fa385"><td class="memItemLeft" align="right" valign="top">const <a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group___c_f_f_t___c_i_f_f_t.html#ga6152621af210f847128c6f38958fa385">twiddleCoef_512_q15</a> [768]</td></tr> +<tr class="separator:ga6152621af210f847128c6f38958fa385"><td class="memSeparator" colspan="2"> </td></tr> +<tr class="memitem:ga8a0ec95d866fe96b740e77d6e1356b59"><td class="memItemLeft" align="right" valign="top">const <a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group___c_f_f_t___c_i_f_f_t.html#ga8a0ec95d866fe96b740e77d6e1356b59">twiddleCoef_1024_q15</a> [1536]</td></tr> +<tr class="separator:ga8a0ec95d866fe96b740e77d6e1356b59"><td class="memSeparator" colspan="2"> </td></tr> +<tr class="memitem:gadd16ce08ffd1048c385e0534a3b19cbb"><td class="memItemLeft" align="right" valign="top">const <a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group___c_f_f_t___c_i_f_f_t.html#gadd16ce08ffd1048c385e0534a3b19cbb">twiddleCoef_2048_q15</a> [3072]</td></tr> +<tr class="separator:gadd16ce08ffd1048c385e0534a3b19cbb"><td class="memSeparator" colspan="2"> </td></tr> +<tr class="memitem:ga9b409d6995eab17805b1d1881d4bc652"><td class="memItemLeft" align="right" valign="top">const <a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group___c_f_f_t___c_i_f_f_t.html#ga9b409d6995eab17805b1d1881d4bc652">twiddleCoef_4096_q15</a> [6144]</td></tr> +<tr class="separator:ga9b409d6995eab17805b1d1881d4bc652"><td class="memSeparator" colspan="2"> </td></tr> +</table> +<a name="details" id="details"></a><h2 class="groupheader">Description</h2> +<h2 class="groupheader">Variable Documentation</h2> +<a class="anchor" id="gae247e83ad50d474107254e25b36ad42b"></a> +<div class="memitem"> +<div class="memproto"> + <table class="memname"> + <tr> + <td class="memname">const uint16_t armBitRevTable[1024]</td> + </tr> + </table> +</div><div class="memdoc"> +<dl class="section user"><dt></dt><dd>Pseudo code for Generation of Bit reversal Table is </dd></dl> +<dl class="section user"><dt></dt><dd><pre>for(l=1;l <= N/4;l++) +{ + for(i=0;i<logN2;i++) + { + a[i]=l&(1<<i); + } + for(j=0; j<logN2; j++) + { + if (a[j]!=0) + y[l]+=(1<<((logN2-1)-j)); + } + y[l] = y[l] >> 1; + } </pre> </dd></dl> +<dl class="section user"><dt></dt><dd>where N = 4096 logN2 = 12 </dd></dl> +<dl class="section user"><dt></dt><dd>N is the maximum FFT Size supported </dd></dl> + +<p>Referenced by <a class="el" href="group___complex_f_f_t.html#gac9565e6bc7229577ecf5e090313cafd7">arm_cfft_radix2_init_f32()</a>, <a class="el" href="group___complex_f_f_t.html#ga5c5b2127b3c4ea2d03692127f8543858">arm_cfft_radix2_init_q15()</a>, <a class="el" href="group___complex_f_f_t.html#gabec9611e77382f31e152668bf6b4b638">arm_cfft_radix2_init_q31()</a>, <a class="el" href="group___complex_f_f_t.html#gaf336459f684f0b17bfae539ef1b1b78a">arm_cfft_radix4_init_f32()</a>, <a class="el" href="group___complex_f_f_t.html#ga0c2acfda3126c452e75b81669e8ad9ef">arm_cfft_radix4_init_q15()</a>, and <a class="el" href="group___complex_f_f_t.html#gad5caaafeec900c8ff72321c01bbd462c">arm_cfft_radix4_init_q31()</a>.</p> + +</div> +</div> +<a class="anchor" id="ga27c056eb130a4333d1cc5dd43ec738b1"></a> +<div class="memitem"> +<div class="memproto"> + <table class="memname"> + <tr> + <td class="memname">const <a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> twiddleCoef_1024[2048]</td> + </tr> + </table> +</div><div class="memdoc"> +<dl class="section user"><dt></dt><dd>Example code for Floating-point Twiddle factors Generation: </dd></dl> +<dl class="section user"><dt></dt><dd><pre>for(i = 0; i< N/; i++) +{ + twiddleCoef[2*i]= cos(i * 2*PI/(float)N); + twiddleCoef[2*i+1]= sin(i * 2*PI/(float)N); +} </pre> </dd></dl> +<dl class="section user"><dt></dt><dd>where N = 1024 and PI = 3.14159265358979 </dd></dl> +<dl class="section user"><dt></dt><dd>Cos and Sin values are in interleaved fashion </dd></dl> + +<p>Referenced by <a class="el" href="group___real_f_f_t.html#gac5fceb172551e7c11eb4d0e17ef15aa3">arm_rfft_fast_init_f32()</a>.</p> + +</div> +</div> +<a class="anchor" id="ga8a0ec95d866fe96b740e77d6e1356b59"></a> +<div class="memitem"> +<div class="memproto"> + <table class="memname"> + <tr> + <td class="memname">const <a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> twiddleCoef_1024_q15[1536]</td> + </tr> + </table> +</div><div class="memdoc"> +<dl class="section user"><dt></dt><dd>Example code for q15 Twiddle factors Generation:: </dd></dl> +<dl class="section user"><dt></dt><dd><pre>for(i = 0; i< 3N/4; i++) +{ + twiddleCoefq15[2*i]= cos(i * 2*PI/(float)N); + twiddleCoefq15[2*i+1]= sin(i * 2*PI/(float)N); +} </pre> </dd></dl> +<dl class="section user"><dt></dt><dd>where N = 1024 and PI = 3.14159265358979 </dd></dl> +<dl class="section user"><dt></dt><dd>Cos and Sin values are interleaved fashion </dd></dl> +<dl class="section user"><dt></dt><dd>Convert Floating point to q15(Fixed point 1.15): round(twiddleCoefq15(i) * pow(2, 15)) </dd></dl> + +</div> +</div> +<a class="anchor" id="ga514443c44b62b8b3d240afefebcda310"></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> twiddleCoef_1024_q31[1536]</td> + </tr> + </table> +</div><div class="memdoc"> +<dl class="section user"><dt></dt><dd>Example code for Q31 Twiddle factors Generation:: </dd></dl> +<dl class="section user"><dt></dt><dd><pre>for(i = 0; i< 3N/4; i++) +{ + twiddleCoefQ31[2*i]= cos(i * 2*PI/(float)N); + twiddleCoefQ31[2*i+1]= sin(i * 2*PI/(float)N); +} </pre> </dd></dl> +<dl class="section user"><dt></dt><dd>where N = 1024 and PI = 3.14159265358979 </dd></dl> +<dl class="section user"><dt></dt><dd>Cos and Sin values are interleaved fashion </dd></dl> +<dl class="section user"><dt></dt><dd>Convert Floating point to Q31(Fixed point 1.31): round(twiddleCoefQ31(i) * pow(2, 31)) </dd></dl> + +</div> +</div> +<a class="anchor" id="ga948433536dafaac1381decfccf4e2d9c"></a> +<div class="memitem"> +<div class="memproto"> + <table class="memname"> + <tr> + <td class="memname">const <a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> twiddleCoef_128[256]</td> + </tr> + </table> +</div><div class="memdoc"> +<dl class="section user"><dt></dt><dd>Example code for Floating-point Twiddle factors Generation: </dd></dl> +<dl class="section user"><dt></dt><dd><pre>for(i = 0; i< N/; i++) +{ + twiddleCoef[2*i]= cos(i * 2*PI/(float)N); + twiddleCoef[2*i+1]= sin(i * 2*PI/(float)N); +} </pre> </dd></dl> +<dl class="section user"><dt></dt><dd>where N = 128 and PI = 3.14159265358979 </dd></dl> +<dl class="section user"><dt></dt><dd>Cos and Sin values are in interleaved fashion </dd></dl> + +<p>Referenced by <a class="el" href="group___real_f_f_t.html#gac5fceb172551e7c11eb4d0e17ef15aa3">arm_rfft_fast_init_f32()</a>.</p> + +</div> +</div> +<a class="anchor" id="gabfdd1c5cd2b3f96da5fe5f07c707a8e5"></a> +<div class="memitem"> +<div class="memproto"> + <table class="memname"> + <tr> + <td class="memname">const <a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> twiddleCoef_128_q15[192]</td> + </tr> + </table> +</div><div class="memdoc"> +<dl class="section user"><dt></dt><dd>Example code for q15 Twiddle factors Generation:: </dd></dl> +<dl class="section user"><dt></dt><dd><pre>for(i = 0; i< 3N/4; i++) +{ + twiddleCoefq15[2*i]= cos(i * 2*PI/(float)N); + twiddleCoefq15[2*i+1]= sin(i * 2*PI/(float)N); +} </pre> </dd></dl> +<dl class="section user"><dt></dt><dd>where N = 128 and PI = 3.14159265358979 </dd></dl> +<dl class="section user"><dt></dt><dd>Cos and Sin values are interleaved fashion </dd></dl> +<dl class="section user"><dt></dt><dd>Convert Floating point to q15(Fixed point 1.15): round(twiddleCoefq15(i) * pow(2, 15)) </dd></dl> + +</div> +</div> +<a class="anchor" id="gafecf9ed9873415d9f5f17f37b30c7250"></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> twiddleCoef_128_q31[192]</td> + </tr> + </table> +</div><div class="memdoc"> +<dl class="section user"><dt></dt><dd>Example code for Q31 Twiddle factors Generation:: </dd></dl> +<dl class="section user"><dt></dt><dd><pre>for(i = 0; i< 3N/4; i++) +{ + twiddleCoefQ31[2*i]= cos(i * 2*PI/(float)N); + twiddleCoefQ31[2*i+1]= sin(i * 2*PI/(float)N); +} </pre> </dd></dl> +<dl class="section user"><dt></dt><dd>where N = 128 and PI = 3.14159265358979 </dd></dl> +<dl class="section user"><dt></dt><dd>Cos and Sin values are interleaved fashion </dd></dl> +<dl class="section user"><dt></dt><dd>Convert Floating point to Q31(Fixed point 1.31): round(twiddleCoefQ31(i) * pow(2, 31)) </dd></dl> + +</div> +</div> +<a class="anchor" id="gae75e243ec61706427314270f222e0c8e"></a> +<div class="memitem"> +<div class="memproto"> + <table class="memname"> + <tr> + <td class="memname">const <a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> twiddleCoef_16[32]</td> + </tr> + </table> +</div><div class="memdoc"> +<dl class="section user"><dt></dt><dd>Example code for Floating-point Twiddle factors Generation: </dd></dl> +<dl class="section user"><dt></dt><dd><pre>for(i = 0; i< N/; i++) +{ + twiddleCoef[2*i]= cos(i * 2*PI/(float)N); + twiddleCoef[2*i+1]= sin(i * 2*PI/(float)N); +} </pre> </dd></dl> +<dl class="section user"><dt></dt><dd>where N = 16 and PI = 3.14159265358979 </dd></dl> +<dl class="section user"><dt></dt><dd>Cos and Sin values are in interleaved fashion </dd></dl> + +<p>Referenced by <a class="el" href="group___real_f_f_t.html#gac5fceb172551e7c11eb4d0e17ef15aa3">arm_rfft_fast_init_f32()</a>.</p> + +</div> +</div> +<a class="anchor" id="ga8e4e2e05f4a3112184c96cb3308d6c39"></a> +<div class="memitem"> +<div class="memproto"> + <table class="memname"> + <tr> + <td class="memname">const <a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> twiddleCoef_16_q15[24]</td> + </tr> + </table> +</div><div class="memdoc"> +<dl class="section user"><dt></dt><dd>Example code for q15 Twiddle factors Generation:: </dd></dl> +<dl class="section user"><dt></dt><dd><pre>for(i = 0; i< 3N/4; i++) +{ + twiddleCoefq15[2*i]= cos(i * 2*PI/(float)N); + twiddleCoefq15[2*i+1]= sin(i * 2*PI/(float)N); +} </pre> </dd></dl> +<dl class="section user"><dt></dt><dd>where N = 16 and PI = 3.14159265358979 </dd></dl> +<dl class="section user"><dt></dt><dd>Cos and Sin values are interleaved fashion </dd></dl> +<dl class="section user"><dt></dt><dd>Convert Floating point to q15(Fixed point 1.15): round(twiddleCoefq15(i) * pow(2, 15)) </dd></dl> + +</div> +</div> +<a class="anchor" id="gaef4697e1ba348c4ac9358f2b9e279e93"></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> twiddleCoef_16_q31[24]</td> + </tr> + </table> +</div><div class="memdoc"> +<dl class="section user"><dt></dt><dd>Example code for Q31 Twiddle factors Generation:: </dd></dl> +<dl class="section user"><dt></dt><dd><pre>for(i = 0; i< 3N/4; i++) +{ + twiddleCoefQ31[2*i]= cos(i * 2*PI/(float)N); + twiddleCoefQ31[2*i+1]= sin(i * 2*PI/(float)N); +} </pre> </dd></dl> +<dl class="section user"><dt></dt><dd>where N = 16 and PI = 3.14159265358979 </dd></dl> +<dl class="section user"><dt></dt><dd>Cos and Sin values are interleaved fashion </dd></dl> +<dl class="section user"><dt></dt><dd>Convert Floating point to Q31(Fixed point 1.31): round(twiddleCoefQ31(i) * pow(2, 31)) </dd></dl> + +</div> +</div> +<a class="anchor" id="ga23e7f30421a7905b21c2015429779633"></a> +<div class="memitem"> +<div class="memproto"> + <table class="memname"> + <tr> + <td class="memname">const <a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> twiddleCoef_2048[4096]</td> + </tr> + </table> +</div><div class="memdoc"> +<dl class="section user"><dt></dt><dd>Example code for Floating-point Twiddle factors Generation: </dd></dl> +<dl class="section user"><dt></dt><dd><pre>for(i = 0; i< N/; i++) +{ + twiddleCoef[2*i]= cos(i * 2*PI/(float)N); + twiddleCoef[2*i+1]= sin(i * 2*PI/(float)N); +} </pre> </dd></dl> +<dl class="section user"><dt></dt><dd>where N = 2048 and PI = 3.14159265358979 </dd></dl> +<dl class="section user"><dt></dt><dd>Cos and Sin values are in interleaved fashion </dd></dl> + +<p>Referenced by <a class="el" href="group___real_f_f_t.html#gac5fceb172551e7c11eb4d0e17ef15aa3">arm_rfft_fast_init_f32()</a>.</p> + +</div> +</div> +<a class="anchor" id="gadd16ce08ffd1048c385e0534a3b19cbb"></a> +<div class="memitem"> +<div class="memproto"> + <table class="memname"> + <tr> + <td class="memname">const <a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> twiddleCoef_2048_q15[3072]</td> + </tr> + </table> +</div><div class="memdoc"> +<dl class="section user"><dt></dt><dd>Example code for q15 Twiddle factors Generation:: </dd></dl> +<dl class="section user"><dt></dt><dd><pre>for(i = 0; i< 3N/4; i++) +{ + twiddleCoefq15[2*i]= cos(i * 2*PI/(float)N); + twiddleCoefq15[2*i+1]= sin(i * 2*PI/(float)N); +} </pre> </dd></dl> +<dl class="section user"><dt></dt><dd>where N = 2048 and PI = 3.14159265358979 </dd></dl> +<dl class="section user"><dt></dt><dd>Cos and Sin values are interleaved fashion </dd></dl> +<dl class="section user"><dt></dt><dd>Convert Floating point to q15(Fixed point 1.15): round(twiddleCoefq15(i) * pow(2, 15)) </dd></dl> + +</div> +</div> +<a class="anchor" id="ga9c5767de9f5a409fd0c2027e6ac67179"></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> twiddleCoef_2048_q31[3072]</td> + </tr> + </table> +</div><div class="memdoc"> +<dl class="section user"><dt></dt><dd>Example code for Q31 Twiddle factors Generation:: </dd></dl> +<dl class="section user"><dt></dt><dd><pre>for(i = 0; i< 3N/4; i++) +{ + twiddleCoefQ31[2*i]= cos(i * 2*PI/(float)N); + twiddleCoefQ31[2*i+1]= sin(i * 2*PI/(float)N); +} </pre> </dd></dl> +<dl class="section user"><dt></dt><dd>where N = 2048 and PI = 3.14159265358979 </dd></dl> +<dl class="section user"><dt></dt><dd>Cos and Sin values are interleaved fashion </dd></dl> +<dl class="section user"><dt></dt><dd>Convert Floating point to Q31(Fixed point 1.31): round(twiddleCoefQ31(i) * pow(2, 31)) </dd></dl> + +</div> +</div> +<a class="anchor" id="gafe813758a03a798e972359a092315be4"></a> +<div class="memitem"> +<div class="memproto"> + <table class="memname"> + <tr> + <td class="memname">const <a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> twiddleCoef_256[512]</td> + </tr> + </table> +</div><div class="memdoc"> +<dl class="section user"><dt></dt><dd>Example code for Floating-point Twiddle factors Generation: </dd></dl> +<dl class="section user"><dt></dt><dd><pre>for(i = 0; i< N/; i++) +{ + twiddleCoef[2*i]= cos(i * 2*PI/(float)N); + twiddleCoef[2*i+1]= sin(i * 2*PI/(float)N); +} </pre> </dd></dl> +<dl class="section user"><dt></dt><dd>where N = 256 and PI = 3.14159265358979 </dd></dl> +<dl class="section user"><dt></dt><dd>Cos and Sin values are in interleaved fashion </dd></dl> + +<p>Referenced by <a class="el" href="group___real_f_f_t.html#gac5fceb172551e7c11eb4d0e17ef15aa3">arm_rfft_fast_init_f32()</a>.</p> + +</div> +</div> +<a class="anchor" id="ga6099ae5262a0a3a8d9ce1e6da02f0c2e"></a> +<div class="memitem"> +<div class="memproto"> + <table class="memname"> + <tr> + <td class="memname">const <a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> twiddleCoef_256_q15[384]</td> + </tr> + </table> +</div><div class="memdoc"> +<dl class="section user"><dt></dt><dd>Example code for q15 Twiddle factors Generation:: </dd></dl> +<dl class="section user"><dt></dt><dd><pre>for(i = 0; i< 3N/4; i++) +{ + twiddleCoefq15[2*i]= cos(i * 2*PI/(float)N); + twiddleCoefq15[2*i+1]= sin(i * 2*PI/(float)N); +} </pre> </dd></dl> +<dl class="section user"><dt></dt><dd>where N = 256 and PI = 3.14159265358979 </dd></dl> +<dl class="section user"><dt></dt><dd>Cos and Sin values are interleaved fashion </dd></dl> +<dl class="section user"><dt></dt><dd>Convert Floating point to q15(Fixed point 1.15): round(twiddleCoefq15(i) * pow(2, 15)) </dd></dl> + +</div> +</div> +<a class="anchor" id="gaef1ea005053b715b851cf5f908168ede"></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> twiddleCoef_256_q31[384]</td> + </tr> + </table> +</div><div class="memdoc"> +<dl class="section user"><dt></dt><dd>Example code for Q31 Twiddle factors Generation:: </dd></dl> +<dl class="section user"><dt></dt><dd><pre>for(i = 0; i< 3N/4; i++) +{ + twiddleCoefQ31[2*i]= cos(i * 2*PI/(float)N); + twiddleCoefQ31[2*i+1]= sin(i * 2*PI/(float)N); +} </pre> </dd></dl> +<dl class="section user"><dt></dt><dd>where N = 256 and PI = 3.14159265358979 </dd></dl> +<dl class="section user"><dt></dt><dd>Cos and Sin values are interleaved fashion </dd></dl> +<dl class="section user"><dt></dt><dd>Convert Floating point to Q31(Fixed point 1.31): round(twiddleCoefQ31(i) * pow(2, 31)) </dd></dl> + +</div> +</div> +<a class="anchor" id="ga78a72c85d88185de98050c930cfc76e3"></a> +<div class="memitem"> +<div class="memproto"> + <table class="memname"> + <tr> + <td class="memname">const <a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> twiddleCoef_32[64]</td> + </tr> + </table> +</div><div class="memdoc"> +<dl class="section user"><dt></dt><dd>Example code for Floating-point Twiddle factors Generation: </dd></dl> +<dl class="section user"><dt></dt><dd><pre>for(i = 0; i< N/; i++) +{ + twiddleCoef[2*i]= cos(i * 2*PI/(float)N); + twiddleCoef[2*i+1]= sin(i * 2*PI/(float)N); +} </pre> </dd></dl> +<dl class="section user"><dt></dt><dd>where N = 32 and PI = 3.14159265358979 </dd></dl> +<dl class="section user"><dt></dt><dd>Cos and Sin values are in interleaved fashion </dd></dl> + +<p>Referenced by <a class="el" href="group___real_f_f_t.html#gac5fceb172551e7c11eb4d0e17ef15aa3">arm_rfft_fast_init_f32()</a>.</p> + +</div> +</div> +<a class="anchor" id="gac194a4fe04a19051ae1811f69c6e5df2"></a> +<div class="memitem"> +<div class="memproto"> + <table class="memname"> + <tr> + <td class="memname">const <a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> twiddleCoef_32_q15[48]</td> + </tr> + </table> +</div><div class="memdoc"> +<dl class="section user"><dt></dt><dd>Example code for q15 Twiddle factors Generation:: </dd></dl> +<dl class="section user"><dt></dt><dd><pre>for(i = 0; i< 3N/4; i++) +{ + twiddleCoefq15[2*i]= cos(i * 2*PI/(float)N); + twiddleCoefq15[2*i+1]= sin(i * 2*PI/(float)N); +} </pre> </dd></dl> +<dl class="section user"><dt></dt><dd>where N = 32 and PI = 3.14159265358979 </dd></dl> +<dl class="section user"><dt></dt><dd>Cos and Sin values are interleaved fashion </dd></dl> +<dl class="section user"><dt></dt><dd>Convert Floating point to q15(Fixed point 1.15): round(twiddleCoefq15(i) * pow(2, 15)) </dd></dl> + +</div> +</div> +<a class="anchor" id="ga8ba78d5e6ef4bdc58e8f0044e0664a0a"></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> twiddleCoef_32_q31[48]</td> + </tr> + </table> +</div><div class="memdoc"> +<dl class="section user"><dt></dt><dd>Example code for Q31 Twiddle factors Generation:: </dd></dl> +<dl class="section user"><dt></dt><dd><pre>for(i = 0; i< 3N/4; i++) +{ + twiddleCoefQ31[2*i]= cos(i * 2*PI/(float)N); + twiddleCoefQ31[2*i+1]= sin(i * 2*PI/(float)N); +} </pre> </dd></dl> +<dl class="section user"><dt></dt><dd>where N = 32 and PI = 3.14159265358979 </dd></dl> +<dl class="section user"><dt></dt><dd>Cos and Sin values are interleaved fashion </dd></dl> +<dl class="section user"><dt></dt><dd>Convert Floating point to Q31(Fixed point 1.31): round(twiddleCoefQ31(i) * pow(2, 31)) </dd></dl> + +</div> +</div> +<a class="anchor" id="gae0182d1dd3b2f21aad4e38a815a0bd40"></a> +<div class="memitem"> +<div class="memproto"> + <table class="memname"> + <tr> + <td class="memname">const <a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> twiddleCoef_4096[8192]</td> + </tr> + </table> +</div><div class="memdoc"> +<dl class="section user"><dt></dt><dd>Example code for Floating-point Twiddle factors Generation: </dd></dl> +<dl class="section user"><dt></dt><dd><pre>for(i = 0; i< N/; i++) +{ + twiddleCoef[2*i]= cos(i * 2*PI/(float)N); + twiddleCoef[2*i+1]= sin(i * 2*PI/(float)N); +} </pre> </dd></dl> +<dl class="section user"><dt></dt><dd>where N = 4096 and PI = 3.14159265358979 </dd></dl> +<dl class="section user"><dt></dt><dd>Cos and Sin values are in interleaved fashion </dd></dl> + +</div> +</div> +<a class="anchor" id="ga9b409d6995eab17805b1d1881d4bc652"></a> +<div class="memitem"> +<div class="memproto"> + <table class="memname"> + <tr> + <td class="memname">const <a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> twiddleCoef_4096_q15[6144]</td> + </tr> + </table> +</div><div class="memdoc"> +<dl class="section user"><dt></dt><dd>Example code for q15 Twiddle factors Generation:: </dd></dl> +<dl class="section user"><dt></dt><dd><pre>for(i = 0; i< 3N/4; i++) +{ + twiddleCoefq15[2*i]= cos(i * 2*PI/(float)N); + twiddleCoefq15[2*i+1]= sin(i * 2*PI/(float)N); +} </pre> </dd></dl> +<dl class="section user"><dt></dt><dd>where N = 4096 and PI = 3.14159265358979 </dd></dl> +<dl class="section user"><dt></dt><dd>Cos and Sin values are interleaved fashion </dd></dl> +<dl class="section user"><dt></dt><dd>Convert Floating point to q15(Fixed point 1.15): round(twiddleCoefq15(i) * pow(2, 15)) </dd></dl> + +<p>Referenced by <a class="el" href="group___complex_f_f_t.html#ga5c5b2127b3c4ea2d03692127f8543858">arm_cfft_radix2_init_q15()</a>, and <a class="el" href="group___complex_f_f_t.html#ga0c2acfda3126c452e75b81669e8ad9ef">arm_cfft_radix4_init_q15()</a>.</p> + +</div> +</div> +<a class="anchor" id="ga67c0890317deab3391e276f22c1fc400"></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> twiddleCoef_4096_q31[6144]</td> + </tr> + </table> +</div><div class="memdoc"> +<dl class="section user"><dt></dt><dd>Example code for Q31 Twiddle factors Generation:: </dd></dl> +<dl class="section user"><dt></dt><dd><pre>for(i = 0; i< 3N/4; i++) +{ + twiddleCoefQ31[2*i]= cos(i * 2*PI/(float)N); + twiddleCoefQ31[2*i+1]= sin(i * 2*PI/(float)N); +} </pre> </dd></dl> +<dl class="section user"><dt></dt><dd>where N = 4096 and PI = 3.14159265358979 </dd></dl> +<dl class="section user"><dt></dt><dd>Cos and Sin values are interleaved fashion </dd></dl> +<dl class="section user"><dt></dt><dd>Convert Floating point to Q31(Fixed point 1.31): round(twiddleCoefQ31(i) * pow(2, 31)) </dd></dl> + +<p>Referenced by <a class="el" href="group___complex_f_f_t.html#gabec9611e77382f31e152668bf6b4b638">arm_cfft_radix2_init_q31()</a>, and <a class="el" href="group___complex_f_f_t.html#gad5caaafeec900c8ff72321c01bbd462c">arm_cfft_radix4_init_q31()</a>.</p> + +</div> +</div> +<a class="anchor" id="gad8830f0c068ab2cc19f2f87d220fa148"></a> +<div class="memitem"> +<div class="memproto"> + <table class="memname"> + <tr> + <td class="memname">const <a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> twiddleCoef_512[1024]</td> + </tr> + </table> +</div><div class="memdoc"> +<dl class="section user"><dt></dt><dd>Example code for Floating-point Twiddle factors Generation: </dd></dl> +<dl class="section user"><dt></dt><dd><pre>for(i = 0; i< N/; i++) +{ + twiddleCoef[2*i]= cos(i * 2*PI/(float)N); + twiddleCoef[2*i+1]= sin(i * 2*PI/(float)N); +} </pre> </dd></dl> +<dl class="section user"><dt></dt><dd>where N = 512 and PI = 3.14159265358979 </dd></dl> +<dl class="section user"><dt></dt><dd>Cos and Sin values are in interleaved fashion </dd></dl> + +<p>Referenced by <a class="el" href="group___real_f_f_t.html#gac5fceb172551e7c11eb4d0e17ef15aa3">arm_rfft_fast_init_f32()</a>.</p> + +</div> +</div> +<a class="anchor" id="ga6152621af210f847128c6f38958fa385"></a> +<div class="memitem"> +<div class="memproto"> + <table class="memname"> + <tr> + <td class="memname">const <a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> twiddleCoef_512_q15[768]</td> + </tr> + </table> +</div><div class="memdoc"> +<dl class="section user"><dt></dt><dd>Example code for q15 Twiddle factors Generation:: </dd></dl> +<dl class="section user"><dt></dt><dd><pre>for(i = 0; i< 3N/4; i++) +{ + twiddleCoefq15[2*i]= cos(i * 2*PI/(float)N); + twiddleCoefq15[2*i+1]= sin(i * 2*PI/(float)N); +} </pre> </dd></dl> +<dl class="section user"><dt></dt><dd>where N = 512 and PI = 3.14159265358979 </dd></dl> +<dl class="section user"><dt></dt><dd>Cos and Sin values are interleaved fashion </dd></dl> +<dl class="section user"><dt></dt><dd>Convert Floating point to q15(Fixed point 1.15): round(twiddleCoefq15(i) * pow(2, 15)) </dd></dl> + +</div> +</div> +<a class="anchor" id="ga416c61b2f08542a39111e06b0378bebe"></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> twiddleCoef_512_q31[768]</td> + </tr> + </table> +</div><div class="memdoc"> +<dl class="section user"><dt></dt><dd>Example code for Q31 Twiddle factors Generation:: </dd></dl> +<dl class="section user"><dt></dt><dd><pre>for(i = 0; i< 3N/4; i++) +{ + twiddleCoefQ31[2*i]= cos(i * 2*PI/(float)N); + twiddleCoefQ31[2*i+1]= sin(i * 2*PI/(float)N); +} </pre> </dd></dl> +<dl class="section user"><dt></dt><dd>where N = 512 and PI = 3.14159265358979 </dd></dl> +<dl class="section user"><dt></dt><dd>Cos and Sin values are interleaved fashion </dd></dl> +<dl class="section user"><dt></dt><dd>Convert Floating point to Q31(Fixed point 1.31): round(twiddleCoefQ31(i) * pow(2, 31)) </dd></dl> + +</div> +</div> +<a class="anchor" id="ga4f3c6d98c7e66393b4ef3ac63746e43d"></a> +<div class="memitem"> +<div class="memproto"> + <table class="memname"> + <tr> + <td class="memname">const <a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> twiddleCoef_64[128]</td> + </tr> + </table> +</div><div class="memdoc"> +<dl class="section user"><dt></dt><dd>Example code for Floating-point Twiddle factors Generation: </dd></dl> +<dl class="section user"><dt></dt><dd><pre>for(i = 0; i< N/; i++) +{ + twiddleCoef[2*i]= cos(i * 2*PI/(float)N); + twiddleCoef[2*i+1]= sin(i * 2*PI/(float)N); +} </pre> </dd></dl> +<dl class="section user"><dt></dt><dd>where N = 64 and PI = 3.14159265358979 </dd></dl> +<dl class="section user"><dt></dt><dd>Cos and Sin values are in interleaved fashion </dd></dl> + +<p>Referenced by <a class="el" href="group___real_f_f_t.html#gac5fceb172551e7c11eb4d0e17ef15aa3">arm_rfft_fast_init_f32()</a>.</p> + +</div> +</div> +<a class="anchor" id="gaa0cc411e0b3c82078e85cfdf1b84290f"></a> +<div class="memitem"> +<div class="memproto"> + <table class="memname"> + <tr> + <td class="memname">const <a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> twiddleCoef_64_q15[96]</td> + </tr> + </table> +</div><div class="memdoc"> +<dl class="section user"><dt></dt><dd>Example code for q15 Twiddle factors Generation:: </dd></dl> +<dl class="section user"><dt></dt><dd><pre>for(i = 0; i< 3N/4; i++) +{ + twiddleCoefq15[2*i]= cos(i * 2*PI/(float)N); + twiddleCoefq15[2*i+1]= sin(i * 2*PI/(float)N); +} </pre> </dd></dl> +<dl class="section user"><dt></dt><dd>where N = 64 and PI = 3.14159265358979 </dd></dl> +<dl class="section user"><dt></dt><dd>Cos and Sin values are interleaved fashion </dd></dl> +<dl class="section user"><dt></dt><dd>Convert Floating point to q15(Fixed point 1.15): round(twiddleCoefq15(i) * pow(2, 15)) </dd></dl> + +</div> +</div> +<a class="anchor" id="ga6e0a7e941a25a0d74b2e6590307de47e"></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> twiddleCoef_64_q31[96]</td> + </tr> + </table> +</div><div class="memdoc"> +<dl class="section user"><dt></dt><dd>Example code for Q31 Twiddle factors Generation:: </dd></dl> +<dl class="section user"><dt></dt><dd><pre>for(i = 0; i< 3N/4; i++) +{ + twiddleCoefQ31[2*i]= cos(i * 2*PI/(float)N); + twiddleCoefQ31[2*i+1]= sin(i * 2*PI/(float)N); +} </pre> </dd></dl> +<dl class="section user"><dt></dt><dd>where N = 64 and PI = 3.14159265358979 </dd></dl> +<dl class="section user"><dt></dt><dd>Cos and Sin values are interleaved fashion </dd></dl> +<dl class="section user"><dt></dt><dd>Convert Floating point to Q31(Fixed point 1.31): round(twiddleCoefQ31(i) * pow(2, 31)) </dd></dl> + +</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="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> |