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| author | Ali Labbene <ali.labbene@st.com> | 2019-12-11 08:59:21 +0100 |
|---|---|---|
| committer | Ali Labbene <ali.labbene@st.com> | 2019-12-16 16:35:24 +0100 |
| commit | 9f95ff5b6ba01db09552b84a0ab79607060a2666 (patch) | |
| tree | 8a6e0dda832555c692307869aed49d07ee7facfe /Documentation/DSP/html/group__cos.html | |
| parent | 76177aa280494bb36d7a0bcbda1078d4db717020 (diff) | |
| download | st-cmsis-core-lowfat-9f95ff5b6ba01db09552b84a0ab79607060a2666.tar.gz st-cmsis-core-lowfat-9f95ff5b6ba01db09552b84a0ab79607060a2666.tar.bz2 st-cmsis-core-lowfat-9f95ff5b6ba01db09552b84a0ab79607060a2666.zip | |
Official ARM version: v5.4.0
Add CMSIS V5.4.0, please refer to index.html available under \docs folder.
Note: content of \CMSIS\Core\Include has been copied under \Include to keep the same structure
used in existing projects, and thus avoid projects mass update
Note: the following components have been removed from ARM original delivery (as not used in ST packages)
- CMSIS_EW2018.pdf
- .gitattributes
- .gitignore
- \Device
- \CMSIS
- \CoreValidation
- \DAP
- \Documentation
- \DoxyGen
- \Driver
- \Pack
- \RTOS\CMSIS_RTOS_Tutorial.pdf
- \RTOS\RTX
- \RTOS\Template
- \RTOS2\RTX
- \Utilities
- All ARM/GCC projects files are deleted from \DSP, \RTOS and \RTOS2
Change-Id: Ia026c3f0f0d016627a4fb5a9032852c33d24b4d3
Diffstat (limited to 'Documentation/DSP/html/group__cos.html')
| -rw-r--r-- | Documentation/DSP/html/group__cos.html | 236 |
1 files changed, 0 insertions, 236 deletions
diff --git a/Documentation/DSP/html/group__cos.html b/Documentation/DSP/html/group__cos.html deleted file mode 100644 index 3a14513..0000000 --- a/Documentation/DSP/html/group__cos.html +++ /dev/null @@ -1,236 +0,0 @@ -<!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>Cosine</title> -<title>CMSIS-DSP: Cosine</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__cos.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="#func-members">Functions</a> </div> - <div class="headertitle"> -<div class="title">Cosine</div> </div> -<div class="ingroups"><a class="el" href="group__group_fast_math.html">Fast Math Functions</a></div></div><!--header--> -<div class="contents"> -<table class="memberdecls"> -<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="func-members"></a> -Functions</h2></td></tr> -<tr class="memitem:gace15287f9c64b9b4084d1c797d4c49d8"><td class="memItemLeft" align="right" valign="top"><a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__cos.html#gace15287f9c64b9b4084d1c797d4c49d8">arm_cos_f32</a> (<a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> x)</td></tr> -<tr class="memdesc:gace15287f9c64b9b4084d1c797d4c49d8"><td class="mdescLeft"> </td><td class="mdescRight">Fast approximation to the trigonometric cosine function for floating-point data. <a href="#gace15287f9c64b9b4084d1c797d4c49d8"></a><br/></td></tr> -<tr class="separator:gace15287f9c64b9b4084d1c797d4c49d8"><td class="memSeparator" colspan="2"> </td></tr> -<tr class="memitem:gadfd60c24def501638c0d5db20f4c869b"><td class="memItemLeft" align="right" valign="top"><a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="group__cos.html#gadfd60c24def501638c0d5db20f4c869b">arm_cos_q15</a> (<a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> x)</td></tr> -<tr class="memdesc:gadfd60c24def501638c0d5db20f4c869b"><td class="mdescLeft"> </td><td class="mdescRight">Fast approximation to the trigonometric cosine function for Q15 data. <a href="#gadfd60c24def501638c0d5db20f4c869b"></a><br/></td></tr> -<tr class="separator:gadfd60c24def501638c0d5db20f4c869b"><td class="memSeparator" colspan="2"> </td></tr> -<tr class="memitem:gad80f121949ef885a77d83ab36e002567"><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="group__cos.html#gad80f121949ef885a77d83ab36e002567">arm_cos_q31</a> (<a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> x)</td></tr> -<tr class="memdesc:gad80f121949ef885a77d83ab36e002567"><td class="mdescLeft"> </td><td class="mdescRight">Fast approximation to the trigonometric cosine function for Q31 data. <a href="#gad80f121949ef885a77d83ab36e002567"></a><br/></td></tr> -<tr class="separator:gad80f121949ef885a77d83ab36e002567"><td class="memSeparator" colspan="2"> </td></tr> -</table> -<a name="details" id="details"></a><h2 class="groupheader">Description</h2> -<p>Computes the trigonometric cosine function using a combination of table lookup and linear interpolation. There are separate functions for Q15, Q31, and floating-point data types. The input to the floating-point version is in radians while the fixed-point Q15 and Q31 have a scaled input with the range [0 +0.9999] mapping to [0 2*pi). The fixed-point range is chosen so that a value of 2*pi wraps around to 0.</p> -<p>The implementation is based on table lookup using 256 values together with linear interpolation. The steps used are:</p> -<ol type="1"> -<li>Calculation of the nearest integer table index</li> -<li>Compute the fractional portion (fract) of the table index.</li> -<li>The final result equals <code>(1.0f-fract)*a + fract*b;</code></li> -</ol> -<p>where </p> -<pre> - b=Table[index+0]; - c=Table[index+1]; -</pre> <h2 class="groupheader">Function Documentation</h2> -<a class="anchor" id="gace15287f9c64b9b4084d1c797d4c49d8"></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_cos_f32 </td> - <td>(</td> - <td class="paramtype"><a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> </td> - <td class="paramname"><em>x</em></td><td>)</td> - <td></td> - </tr> - </table> -</div><div class="memdoc"> -<dl class="params"><dt>Parameters</dt><dd> - <table class="params"> - <tr><td class="paramdir">[in]</td><td class="paramname">x</td><td>input value in radians. </td></tr> - </table> - </dd> -</dl> -<dl class="section return"><dt>Returns</dt><dd>cos(x). </dd></dl> -<dl><dt><b>Examples: </b></dt><dd><a class="el" href="arm_sin_cos_example_f32_8c-example.html#a11">arm_sin_cos_example_f32.c</a>.</dd> -</dl> -<p>References <a class="el" href="arm__math_8h.html#afcb9147c96853bea484cfc2dde07463d">FAST_MATH_TABLE_SIZE</a>, and <a class="el" href="arm__common__tables_8c.html#a1dec82d596780f1a66ef4f76f137c1d9">sinTable_f32</a>.</p> - -<p>Referenced by <a class="el" href="arm__sin__cos__example__f32_8c.html#a52d2cba30e6946c95578be946ac12a65">main()</a>.</p> - -</div> -</div> -<a class="anchor" id="gadfd60c24def501638c0d5db20f4c869b"></a> -<div class="memitem"> -<div class="memproto"> - <table class="memname"> - <tr> - <td class="memname"><a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> arm_cos_q15 </td> - <td>(</td> - <td class="paramtype"><a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> </td> - <td class="paramname"><em>x</em></td><td>)</td> - <td></td> - </tr> - </table> -</div><div class="memdoc"> -<dl class="params"><dt>Parameters</dt><dd> - <table class="params"> - <tr><td class="paramdir">[in]</td><td class="paramname">x</td><td>Scaled input value in radians. </td></tr> - </table> - </dd> -</dl> -<dl class="section return"><dt>Returns</dt><dd>cos(x).</dd></dl> -<p>The Q15 input value is in the range [0 +0.9999] and is mapped to a radian value in the range [0 2*pi). </p> - -<p>References <a class="el" href="arm__math_8h.html#a34716b73c631e65e8dd855e08384ecb2">FAST_MATH_Q15_SHIFT</a>, and <a class="el" href="arm__common__tables_8c.html#a9cbcfe313f61add745ebfeddb4fecd55">sinTable_q15</a>.</p> - -</div> -</div> -<a class="anchor" id="gad80f121949ef885a77d83ab36e002567"></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_cos_q31 </td> - <td>(</td> - <td class="paramtype"><a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> </td> - <td class="paramname"><em>x</em></td><td>)</td> - <td></td> - </tr> - </table> -</div><div class="memdoc"> -<dl class="params"><dt>Parameters</dt><dd> - <table class="params"> - <tr><td class="paramdir">[in]</td><td class="paramname">x</td><td>Scaled input value in radians. </td></tr> - </table> - </dd> -</dl> -<dl class="section return"><dt>Returns</dt><dd>cos(x).</dd></dl> -<p>The Q31 input value is in the range [0 +0.9999] and is mapped to a radian value in the range [0 2*pi). </p> - -<p>References <a class="el" href="arm__math_8h.html#a4268f77b1811a0c7fc2532a0bf6108b0">FAST_MATH_Q31_SHIFT</a>, and <a class="el" href="arm__common__tables_8c.html#a8bfccee9e1c0042cf4a765f4b19d097d">sinTable_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="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> |