dengzhihao
/
CMSIS-DSP
0
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
You cannot select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
hotfix
gh-pages
main
v1.14.4
v1.14.3
v1.14.2
v1.14.1
v1.14.0
v1.13.0
v1.12.0
v1.11.0
v1.10.1
Branches Tags
${ item.name }
Create tag ${ searchTerm }
Create branch ${ searchTerm }
from '8dcf55f7ee'
${ noResults }
CMSIS-DSP/v1.14.3/arm_variance_example_f32_8c...

310 lines
26 KiB
HTML
Raw Blame History

<!-- HTML header for doxygen 1.9.2-->
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "https://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=11"/>
<meta name="viewport" content="width=device-width, initial-scale=1"/>
<title>CMSIS-DSP: arm_variance_example_f32.c</title>
<link href="tabs.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="footer.js"></script>
<link href="navtree.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="resize.js"></script>
<script type="text/javascript" src="navtreedata.js"></script>
<script type="text/javascript" src="navtree.js"></script>
<link href="search/search.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="search/searchdata.js"></script>
<script type="text/javascript" src="search/search.js"></script>
<script type="text/javascript">
/* @license magnet:?xt=urn:btih:d3d9a9a6595521f9666a5e94cc830dab83b65699&amp;dn=expat.txt MIT */
$(document).ready(function() { init_search(); });
/* @license-end */
</script>
<script type="text/x-mathjax-config">
MathJax.Hub.Config({
extensions: ["tex2jax.js", "TeX/AMSmath.js", "TeX/AMSsymbols.js"],
jax: ["input/TeX","output/HTML-CSS"],
});
</script>
<script type="text/javascript" async="async" src="https://cdn.jsdelivr.net/npm/mathjax@2/MathJax.js"></script>
<link href="$extra_stylesheet" rel="stylesheet" type="text/css" />
<link href="extra_stylesheet.css" rel="stylesheet" type="text/css"/>
<link href="version.css" rel="stylesheet" type="text/css" />
<script type="text/javascript" src="../version.js"></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: 55px;">
<td id="projectlogo" style="padding: 1.5em;"><img alt="Logo" src="cmsis_logo_white_small.png"/></td>
<td style="padding-left: 1em; padding-bottom: 1em;padding-top: 1em;">
<div id="projectname">CMSIS-DSP
&#160;<span id="projectnumber"><script type="text/javascript">
<!--
writeHeader.call(this);
writeVersionDropdown(this);
//-->
</script>
</span>
</div>
<div id="projectbrief">CMSIS DSP Software Library</div>
</td>
<!--END !PROJECT_NAME-->
</tr>
</tbody>
</table>
</div>
<!-- end header part -->
<!-- Generated by Doxygen 1.9.2 -->
<script type="text/javascript">
/* @license magnet:?xt=urn:btih:d3d9a9a6595521f9666a5e94cc830dab83b65699&amp;dn=expat.txt MIT */
var searchBox = new SearchBox("searchBox", "search",'Search','.html');
/* @license-end */
</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>&#160;API&#160;Reference</span></a></li>
<li>
<div id="MSearchBox" class="MSearchBoxInactive">
<span class="left">
<img id="MSearchSelect" src="search/mag_sel.svg"
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.svg" 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">
/* @license magnet:?xt=urn:btih:d3d9a9a6595521f9666a5e94cc830dab83b65699&amp;dn=expat.txt MIT */
$(document).ready(function(){initNavTree('arm_variance_example_f32_8c-example.html',''); initResizable(); });
/* @license-end */
</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)">
</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="headertitle"><div class="title">arm_variance_example_f32.c</div></div>
</div><!--header-->
<div class="contents">
<div class="fragment"><div class="line"><span class="comment">/* ----------------------------------------------------------------------</span></div>
<div class="line"><span class="comment">* Copyright (C) 2010-2012 ARM Limited. All rights reserved.</span></div>
<div class="line"><span class="comment">*</span></div>
<div class="line"><span class="comment">* $Date: 17. January 2013</span></div>
<div class="line"><span class="comment">* $Revision: V1.4.0</span></div>
<div class="line"><span class="comment">*</span></div>
<div class="line"><span class="comment">* Project: CMSIS DSP Library</span></div>
<div class="line"><span class="comment">* Title: arm_variance_example_f32.c</span></div>
<div class="line"><span class="comment">*</span></div>
<div class="line"><span class="comment">* Description: Example code demonstrating variance calculation of input sequence.</span></div>
<div class="line"><span class="comment">*</span></div>
<div class="line"><span class="comment">* Target Processor: Cortex-M4/Cortex-M3</span></div>
<div class="line"><span class="comment">*</span></div>
<div class="line"><span class="comment">* Redistribution and use in source and binary forms, with or without</span></div>
<div class="line"><span class="comment">* modification, are permitted provided that the following conditions</span></div>
<div class="line"><span class="comment">* are met:</span></div>
<div class="line"><span class="comment">* - Redistributions of source code must retain the above copyright</span></div>
<div class="line"><span class="comment">* notice, this list of conditions and the following disclaimer.</span></div>
<div class="line"><span class="comment">* - Redistributions in binary form must reproduce the above copyright</span></div>
<div class="line"><span class="comment">* notice, this list of conditions and the following disclaimer in</span></div>
<div class="line"><span class="comment">* the documentation and/or other materials provided with the</span></div>
<div class="line"><span class="comment">* distribution.</span></div>
<div class="line"><span class="comment">* - Neither the name of ARM LIMITED nor the names of its contributors</span></div>
<div class="line"><span class="comment">* may be used to endorse or promote products derived from this</span></div>
<div class="line"><span class="comment">* software without specific prior written permission.</span></div>
<div class="line"><span class="comment">*</span></div>
<div class="line"><span class="comment">* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS</span></div>
<div class="line"><span class="comment">* &quot;AS IS&quot; AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT</span></div>
<div class="line"><span class="comment">* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS</span></div>
<div class="line"><span class="comment">* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE</span></div>
<div class="line"><span class="comment">* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,</span></div>
<div class="line"><span class="comment">* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,</span></div>
<div class="line"><span class="comment">* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;</span></div>
<div class="line"><span class="comment">* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER</span></div>
<div class="line"><span class="comment">* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT</span></div>
<div class="line"><span class="comment">* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN</span></div>
<div class="line"><span class="comment">* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE</span></div>
<div class="line"><span class="comment">* POSSIBILITY OF SUCH DAMAGE.</span></div>
<div class="line"><span class="comment">* -------------------------------------------------------------------- */</span></div>
<div class="line"> </div>
<div class="line"><span class="preprocessor">#include &lt;math.h&gt;</span></div>
<div class="line"><span class="preprocessor">#include &quot;<a class="code" href="arm__math_8h.html">arm_math.h</a>&quot;</span></div>
<div class="line"> </div>
<div class="line"><span class="preprocessor">#if defined(SEMIHOSTING)</span></div>
<div class="line"><span class="preprocessor">#include &lt;stdio.h&gt;</span></div>
<div class="line"><span class="preprocessor">#endif</span></div>
<div class="line"> </div>
<div class="line"><span class="comment">/* ----------------------------------------------------------------------</span></div>
<div class="line"><span class="comment">* Defines each of the tests performed</span></div>
<div class="line"><span class="comment">* ------------------------------------------------------------------- */</span></div>
<div class="line"><span class="preprocessor">#define MAX_BLOCKSIZE 32</span></div>
<div class="line"><span class="preprocessor">#define DELTA (0.000001f)</span></div>
<div class="line"> </div>
<div class="line"> </div>
<div class="line"><span class="comment">/* ----------------------------------------------------------------------</span></div>
<div class="line"><span class="comment">* Declare I/O buffers</span></div>
<div class="line"><span class="comment">* ------------------------------------------------------------------- */</span></div>
<div class="line"><a class="code hl_typedef" href="arm__math__types_8h.html#a4611b605e45ab401f02cab15c5e38715" title="32-bit floating-point type definition.">float32_t</a> <a id="a0" name="a0"></a><a class="code hl_variable" href="arm__variance__example__f32_8c.html#a5a30747a6e123c736fa224035daaf922">wire1</a>[<a id="a1" name="a1"></a><a class="code hl_define" href="arm__variance__example__f32_8c.html#af8a1d2ed31f7c9a00fec46a798edb61b">MAX_BLOCKSIZE</a>];</div>
<div class="line"><a class="code hl_typedef" href="arm__math__types_8h.html#a4611b605e45ab401f02cab15c5e38715" title="32-bit floating-point type definition.">float32_t</a> <a id="a2" name="a2"></a><a class="code hl_variable" href="arm__variance__example__f32_8c.html#a43c9789725f5802e9d9d53e3ba9ea6ad">wire2</a>[<a class="code hl_define" href="arm__variance__example__f32_8c.html#af8a1d2ed31f7c9a00fec46a798edb61b">MAX_BLOCKSIZE</a>];</div>
<div class="line"><a class="code hl_typedef" href="arm__math__types_8h.html#a4611b605e45ab401f02cab15c5e38715" title="32-bit floating-point type definition.">float32_t</a> <a id="a3" name="a3"></a><a class="code hl_variable" href="arm__variance__example__f32_8c.html#a01ed82c471c44bf07d53fe32ba3d1fcc">wire3</a>[<a class="code hl_define" href="arm__variance__example__f32_8c.html#af8a1d2ed31f7c9a00fec46a798edb61b">MAX_BLOCKSIZE</a>];</div>
<div class="line"> </div>
<div class="line"><span class="comment">/* ----------------------------------------------------------------------</span></div>
<div class="line"><span class="comment">* Test input data for Floating point Variance example for 32-blockSize</span></div>
<div class="line"><span class="comment">* Generated by the MATLAB randn() function</span></div>
<div class="line"><span class="comment">* ------------------------------------------------------------------- */</span></div>
<div class="line"> </div>
<div class="line"><a class="code hl_typedef" href="arm__math__types_8h.html#a4611b605e45ab401f02cab15c5e38715" title="32-bit floating-point type definition.">float32_t</a> <a id="a4" name="a4"></a><a class="code hl_variable" href="arm__variance__example__f32_8c.html#a9170ec9e681e2b519fe9c46a30455841">testInput_f32</a>[32] =</div>
<div class="line">{</div>
<div class="line"> -0.432564811528221, -1.665584378238097, 0.125332306474831, 0.287676420358549,</div>
<div class="line"> -1.146471350681464, 1.190915465642999, 1.189164201652103, -0.037633276593318,</div>
<div class="line"> 0.327292361408654, 0.174639142820925, -0.186708577681439, 0.725790548293303,</div>
<div class="line"> -0.588316543014189, 2.183185818197101, -0.136395883086596, 0.113931313520810,</div>
<div class="line"> 1.066768211359189, 0.059281460523605, -0.095648405483669, -0.832349463650022,</div>
<div class="line"> 0.294410816392640, -1.336181857937804, 0.714324551818952, 1.623562064446271,</div>
<div class="line"> -0.691775701702287, 0.857996672828263, 1.254001421602532, -1.593729576447477,</div>
<div class="line"> -1.440964431901020, 0.571147623658178, -0.399885577715363, 0.689997375464345</div>
<div class="line"> </div>
<div class="line">};</div>
<div class="line"> </div>
<div class="line"><span class="comment">/* ----------------------------------------------------------------------</span></div>
<div class="line"><span class="comment">* Declare Global variables</span></div>
<div class="line"><span class="comment">* ------------------------------------------------------------------- */</span></div>
<div class="line">uint32_t <a id="a5" name="a5"></a><a class="code hl_variable" href="arm__variance__example__f32_8c.html#ab6558f40a619c2502fbc24c880fd4fb0">blockSize</a> = 32;</div>
<div class="line"><a class="code hl_typedef" href="arm__math__types_8h.html#a4611b605e45ab401f02cab15c5e38715" title="32-bit floating-point type definition.">float32_t</a> <a id="a6" name="a6"></a><a class="code hl_variable" href="arm__variance__example__f32_8c.html#a26cbbfe2a7905669e8440159465050df">refVarianceOut</a> = 0.903941793931839;</div>
<div class="line"> </div>
<div class="line"><span class="comment">/* ----------------------------------------------------------------------</span></div>
<div class="line"><span class="comment">* Variance calculation test</span></div>
<div class="line"><span class="comment">* ------------------------------------------------------------------- */</span></div>
<div class="line"> </div>
<div class="line">int32_t <a id="a7" name="a7"></a><a class="code hl_function" href="arm__variance__example__f32_8c.html#a52d2cba30e6946c95578be946ac12a65">main</a>(<span class="keywordtype">void</span>)</div>
<div class="line">{</div>
<div class="line"> <a class="code hl_enumeration" href="arm__math__types_8h.html#a5e459c6409dfcd2927bb8a57491d7cf6" title="Error status returned by some functions in the library.">arm_status</a> <a id="a8" name="a8"></a><a class="code hl_variable" href="arm__dotproduct__example__f32_8c.html#a88ccb294236ab22b00310c47164c53c3">status</a>;</div>
<div class="line"> <a class="code hl_typedef" href="arm__math__types_8h.html#a4611b605e45ab401f02cab15c5e38715" title="32-bit floating-point type definition.">float32_t</a> <a id="a9" name="a9"></a><a class="code hl_variable" href="arm__class__marks__example__f32_8c.html#acc9290716b3c97381ce52d14b4b01681">mean</a>, oneByBlockSize;</div>
<div class="line"> <a class="code hl_typedef" href="arm__math__types_8h.html#a4611b605e45ab401f02cab15c5e38715" title="32-bit floating-point type definition.">float32_t</a> variance;</div>
<div class="line"> <a class="code hl_typedef" href="arm__math__types_8h.html#a4611b605e45ab401f02cab15c5e38715" title="32-bit floating-point type definition.">float32_t</a> diff;</div>
<div class="line"> </div>
<div class="line"> <a class="code hl_variable" href="arm__dotproduct__example__f32_8c.html#a88ccb294236ab22b00310c47164c53c3">status</a> = <a id="a10" name="a10"></a><a class="code hl_enumvalue" href="arm__math__types_8h.html#a5e459c6409dfcd2927bb8a57491d7cf6a9f8b2a10bd827fb4600e77d455902eb0">ARM_MATH_SUCCESS</a>;</div>
<div class="line"> </div>
<div class="line"><span class="preprocessor">#if defined(SEMIHOSTING)</span></div>
<div class="line"> printf(<span class="stringliteral">&quot;START\n&quot;</span>);</div>
<div class="line"><span class="preprocessor">#endif</span></div>
<div class="line"> </div>
<div class="line"> </div>
<div class="line"> <span class="comment">/* Calculation of mean value of input */</span></div>
<div class="line"> </div>
<div class="line"> <span class="comment">/* x&#39; = 1/blockSize * (x(0)* 1 + x(1) * 1 + ... + x(n-1) * 1) */</span></div>
<div class="line"> </div>
<div class="line"> <span class="comment">/* Fill wire1 buffer with 1.0 value */</span></div>
<div class="line"> <a id="a11" name="a11"></a><a class="code hl_function" href="group__Fill.html#ga2248e8d3901b4afb7827163132baad94" title="Fills a constant value into a floating-point vector.">arm_fill_f32</a>(1.0, <a class="code hl_variable" href="arm__variance__example__f32_8c.html#a5a30747a6e123c736fa224035daaf922">wire1</a>, <a class="code hl_variable" href="arm__variance__example__f32_8c.html#ab6558f40a619c2502fbc24c880fd4fb0">blockSize</a>);</div>
<div class="line"> </div>
<div class="line"> <span class="comment">/* Calculate the dot product of wire1 and wire2 */</span></div>
<div class="line"> <span class="comment">/* (x(0)* 1 + x(1) * 1 + ...+ x(n-1) * 1) */</span></div>
<div class="line"> <a id="a12" name="a12"></a><a class="code hl_function" href="group__BasicDotProd.html#gadf26f6bc62d6416528663ad3e46fbf67" title="Dot product of floating-point vectors.">arm_dot_prod_f32</a>(<a class="code hl_variable" href="arm__variance__example__f32_8c.html#a9170ec9e681e2b519fe9c46a30455841">testInput_f32</a>, <a class="code hl_variable" href="arm__variance__example__f32_8c.html#a5a30747a6e123c736fa224035daaf922">wire1</a>, <a class="code hl_variable" href="arm__variance__example__f32_8c.html#ab6558f40a619c2502fbc24c880fd4fb0">blockSize</a>, &amp;<a class="code hl_variable" href="arm__class__marks__example__f32_8c.html#acc9290716b3c97381ce52d14b4b01681">mean</a>);</div>
<div class="line"> </div>
<div class="line"> <span class="comment">/* Calculation of 1/blockSize */</span></div>
<div class="line"> oneByBlockSize = 1.0 / (<a class="code hl_variable" href="arm__variance__example__f32_8c.html#ab6558f40a619c2502fbc24c880fd4fb0">blockSize</a>);</div>
<div class="line"> </div>
<div class="line"> <span class="comment">/* 1/blockSize * (x(0)* 1 + x(1) * 1 + ... + x(n-1) * 1) */</span></div>
<div class="line"> <a id="a13" name="a13"></a><a class="code hl_function" href="group__BasicMult.html#gacf950935141cad927bea886e88fd9e9b" title="Floating-point vector multiplication.">arm_mult_f32</a>(&amp;<a class="code hl_variable" href="arm__class__marks__example__f32_8c.html#acc9290716b3c97381ce52d14b4b01681">mean</a>, &amp;oneByBlockSize, &amp;<a class="code hl_variable" href="arm__class__marks__example__f32_8c.html#acc9290716b3c97381ce52d14b4b01681">mean</a>, 1);</div>
<div class="line"> </div>
<div class="line"> </div>
<div class="line"> <span class="comment">/* Calculation of variance value of input */</span></div>
<div class="line"> </div>
<div class="line"> <span class="comment">/* (1/blockSize) * (x(0) - x&#39;) * (x(0) - x&#39;) + (x(1) - x&#39;) * (x(1) - x&#39;) + ... + (x(n-1) - x&#39;) * (x(n-1) - x&#39;) */</span></div>
<div class="line"> </div>
<div class="line"> <span class="comment">/* Fill wire2 with mean value x&#39; */</span></div>
<div class="line"> <a class="code hl_function" href="group__Fill.html#ga2248e8d3901b4afb7827163132baad94" title="Fills a constant value into a floating-point vector.">arm_fill_f32</a>(<a class="code hl_variable" href="arm__class__marks__example__f32_8c.html#acc9290716b3c97381ce52d14b4b01681">mean</a>, <a class="code hl_variable" href="arm__variance__example__f32_8c.html#a43c9789725f5802e9d9d53e3ba9ea6ad">wire2</a>, <a class="code hl_variable" href="arm__variance__example__f32_8c.html#ab6558f40a619c2502fbc24c880fd4fb0">blockSize</a>);</div>
<div class="line"> </div>
<div class="line"> <span class="comment">/* wire3 contains (x-x&#39;) */</span></div>
<div class="line"> <a id="a14" name="a14"></a><a class="code hl_function" href="group__BasicSub.html#ga76b8b2aec34269c6de0b090cab00fb33" title="Floating-point vector subtraction.">arm_sub_f32</a>(<a class="code hl_variable" href="arm__variance__example__f32_8c.html#a9170ec9e681e2b519fe9c46a30455841">testInput_f32</a>, <a class="code hl_variable" href="arm__variance__example__f32_8c.html#a43c9789725f5802e9d9d53e3ba9ea6ad">wire2</a>, <a class="code hl_variable" href="arm__variance__example__f32_8c.html#a01ed82c471c44bf07d53fe32ba3d1fcc">wire3</a>, <a class="code hl_variable" href="arm__variance__example__f32_8c.html#ab6558f40a619c2502fbc24c880fd4fb0">blockSize</a>);</div>
<div class="line"> </div>
<div class="line"> <span class="comment">/* wire2 contains (x-x&#39;) */</span></div>
<div class="line"> <a id="a15" name="a15"></a><a class="code hl_function" href="group__copy.html#gaa6dfe9554ca61eb3d1eee498396bce88" title="Copies the elements of a floating-point vector.">arm_copy_f32</a>(<a class="code hl_variable" href="arm__variance__example__f32_8c.html#a01ed82c471c44bf07d53fe32ba3d1fcc">wire3</a>, <a class="code hl_variable" href="arm__variance__example__f32_8c.html#a43c9789725f5802e9d9d53e3ba9ea6ad">wire2</a>, <a class="code hl_variable" href="arm__variance__example__f32_8c.html#ab6558f40a619c2502fbc24c880fd4fb0">blockSize</a>);</div>
<div class="line"> </div>
<div class="line"> <span class="comment">/* (x(0) - x&#39;) * (x(0) - x&#39;) + (x(1) - x&#39;) * (x(1) - x&#39;) + ... + (x(n-1) - x&#39;) * (x(n-1) - x&#39;) */</span></div>
<div class="line"> <a class="code hl_function" href="group__BasicDotProd.html#gadf26f6bc62d6416528663ad3e46fbf67" title="Dot product of floating-point vectors.">arm_dot_prod_f32</a>(<a class="code hl_variable" href="arm__variance__example__f32_8c.html#a43c9789725f5802e9d9d53e3ba9ea6ad">wire2</a>, <a class="code hl_variable" href="arm__variance__example__f32_8c.html#a01ed82c471c44bf07d53fe32ba3d1fcc">wire3</a>, <a class="code hl_variable" href="arm__variance__example__f32_8c.html#ab6558f40a619c2502fbc24c880fd4fb0">blockSize</a>, &amp;variance);</div>
<div class="line"> </div>
<div class="line"> <span class="comment">/* Calculation of 1/blockSize */</span></div>
<div class="line"> oneByBlockSize = 1.0 / (<a class="code hl_variable" href="arm__variance__example__f32_8c.html#ab6558f40a619c2502fbc24c880fd4fb0">blockSize</a> - 1);</div>
<div class="line"> </div>
<div class="line"> <span class="comment">/* Calculation of variance */</span></div>
<div class="line"> <a class="code hl_function" href="group__BasicMult.html#gacf950935141cad927bea886e88fd9e9b" title="Floating-point vector multiplication.">arm_mult_f32</a>(&amp;variance, &amp;oneByBlockSize, &amp;variance, 1);</div>
<div class="line"> </div>
<div class="line"> <span class="comment">/* absolute value of difference between ref and test */</span></div>
<div class="line"> diff = fabsf(<a class="code hl_variable" href="arm__variance__example__f32_8c.html#a26cbbfe2a7905669e8440159465050df">refVarianceOut</a> - variance);</div>
<div class="line"> </div>
<div class="line"> <span class="comment">/* Comparison of variance value with reference */</span></div>
<div class="line"> <a class="code hl_variable" href="arm__dotproduct__example__f32_8c.html#a88ccb294236ab22b00310c47164c53c3">status</a> = (diff &gt; <a id="a16" name="a16"></a><a class="code hl_define" href="arm__variance__example__f32_8c.html#a3fd2b1bcd7ddcf506237987ad780f495">DELTA</a>) ? <a id="a17" name="a17"></a><a class="code hl_enumvalue" href="arm__math__types_8h.html#a5e459c6409dfcd2927bb8a57491d7cf6a09457f2be656b35015fd6d36202fa376">ARM_MATH_TEST_FAILURE</a> : <a class="code hl_enumvalue" href="arm__math__types_8h.html#a5e459c6409dfcd2927bb8a57491d7cf6a9f8b2a10bd827fb4600e77d455902eb0">ARM_MATH_SUCCESS</a>;</div>
<div class="line"> </div>
<div class="line"> <span class="keywordflow">if</span> (<a class="code hl_variable" href="arm__dotproduct__example__f32_8c.html#a88ccb294236ab22b00310c47164c53c3">status</a> != <a class="code hl_enumvalue" href="arm__math__types_8h.html#a5e459c6409dfcd2927bb8a57491d7cf6a9f8b2a10bd827fb4600e77d455902eb0">ARM_MATH_SUCCESS</a>)</div>
<div class="line"> {</div>
<div class="line"><span class="preprocessor">#if defined (SEMIHOSTING)</span></div>
<div class="line"> printf(<span class="stringliteral">&quot;FAILURE\n&quot;</span>);</div>
<div class="line"><span class="preprocessor">#else</span></div>
<div class="line"> <span class="keywordflow">while</span> (1); <span class="comment">/* main function does not return */</span></div>
<div class="line"><span class="preprocessor">#endif</span></div>
<div class="line"> }</div>
<div class="line"> <span class="keywordflow">else</span></div>
<div class="line"> {</div>
<div class="line"><span class="preprocessor">#if defined (SEMIHOSTING)</span></div>
<div class="line"> printf(<span class="stringliteral">&quot;SUCCESS\n&quot;</span>);</div>
<div class="line"><span class="preprocessor">#else</span></div>
<div class="line"> <span class="keywordflow">while</span> (1); <span class="comment">/* main function does not return */</span></div>
<div class="line"><span class="preprocessor">#endif</span></div>
<div class="line"> }</div>
<div class="line"> </div>
<div class="line">}</div>
<div class="line"> </div>
</div><!-- fragment --> </div><!-- contents -->
</div><!-- doc-content -->
<!-- start footer part -->
<div id="nav-path" class="navpath"><!-- id is needed for treeview function! -->
<ul>
<li class="footer">
<script type="text/javascript">
<!--
writeFooter.call(this);
//-->
</script>
</li>
</ul>
</div>
</body>
</html>
Reference in New Issue View Git Blame Copy Permalink