| <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> |
| <html xmlns="http://www.w3.org/1999/xhtml"> |
| <head> |
| <meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/> |
| <title>CMSIS DSP Software Library: arm_cmplx_mult_real_q31.c Source File</title> |
| <link href="tabs.css" rel="stylesheet" type="text/css"/> |
| <link href="search/search.css" rel="stylesheet" type="text/css"/> |
| <script type="text/javaScript" src="search/search.js"></script> |
| <link href="doxygen.css" rel="stylesheet" type="text/css"/> |
| </head> |
| <body onload='searchBox.OnSelectItem(0);'> |
| <!-- Generated by Doxygen 1.7.2 --> |
| <script type="text/javascript"><!-- |
| var searchBox = new SearchBox("searchBox", "search",false,'Search'); |
| --></script> |
| <div class="navigation" id="top"> |
| <div class="tabs"> |
| <ul class="tablist"> |
| <li><a href="index.html"><span>Main Page</span></a></li> |
| <li><a href="modules.html"><span>Modules</span></a></li> |
| <li><a href="annotated.html"><span>Data Structures</span></a></li> |
| <li class="current"><a href="files.html"><span>Files</span></a></li> |
| <li><a href="examples.html"><span>Examples</span></a></li> |
| <li id="searchli"> |
| <div id="MSearchBox" class="MSearchBoxInactive"> |
| <span class="left"> |
| <img id="MSearchSelect" src="search/mag_sel.png" |
| onmouseover="return searchBox.OnSearchSelectShow()" |
| onmouseout="return searchBox.OnSearchSelectHide()" |
| alt=""/> |
| <input type="text" id="MSearchField" value="Search" accesskey="S" |
| onfocus="searchBox.OnSearchFieldFocus(true)" |
| onblur="searchBox.OnSearchFieldFocus(false)" |
| onkeyup="searchBox.OnSearchFieldChange(event)"/> |
| </span><span class="right"> |
| <a id="MSearchClose" href="javascript:searchBox.CloseResultsWindow()"><img id="MSearchCloseImg" border="0" src="search/close.png" alt=""/></a> |
| </span> |
| </div> |
| </li> |
| </ul> |
| </div> |
| <div class="tabs2"> |
| <ul class="tablist"> |
| <li><a href="files.html"><span>File List</span></a></li> |
| <li><a href="globals.html"><span>Globals</span></a></li> |
| </ul> |
| </div> |
| <div class="header"> |
| <div class="headertitle"> |
| <h1>arm_cmplx_mult_real_q31.c</h1> </div> |
| </div> |
| <div class="contents"> |
| <a href="arm__cmplx__mult__real__q31_8c.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/* ---------------------------------------------------------------------- </span> |
| <a name="l00002"></a>00002 <span class="comment">* Copyright (C) 2010 ARM Limited. All rights reserved. </span> |
| <a name="l00003"></a>00003 <span class="comment">* </span> |
| <a name="l00004"></a>00004 <span class="comment">* $Date: 15. July 2011 </span> |
| <a name="l00005"></a>00005 <span class="comment">* $Revision: V1.0.10 </span> |
| <a name="l00006"></a>00006 <span class="comment">* </span> |
| <a name="l00007"></a>00007 <span class="comment">* Project: CMSIS DSP Library </span> |
| <a name="l00008"></a>00008 <span class="comment">* Title: arm_cmplx_mult_real_q31.c </span> |
| <a name="l00009"></a>00009 <span class="comment">* </span> |
| <a name="l00010"></a>00010 <span class="comment">* Description: Q31 complex by real multiplication </span> |
| <a name="l00011"></a>00011 <span class="comment">* </span> |
| <a name="l00012"></a>00012 <span class="comment">* Target Processor: Cortex-M4/Cortex-M3/Cortex-M0</span> |
| <a name="l00013"></a>00013 <span class="comment">* </span> |
| <a name="l00014"></a>00014 <span class="comment">* Version 1.0.10 2011/7/15 </span> |
| <a name="l00015"></a>00015 <span class="comment">* Big Endian support added and Merged M0 and M3/M4 Source code. </span> |
| <a name="l00016"></a>00016 <span class="comment">* </span> |
| <a name="l00017"></a>00017 <span class="comment">* Version 1.0.3 2010/11/29 </span> |
| <a name="l00018"></a>00018 <span class="comment">* Re-organized the CMSIS folders and updated documentation. </span> |
| <a name="l00019"></a>00019 <span class="comment">* </span> |
| <a name="l00020"></a>00020 <span class="comment">* Version 1.0.2 2010/11/11 </span> |
| <a name="l00021"></a>00021 <span class="comment">* Documentation updated. </span> |
| <a name="l00022"></a>00022 <span class="comment">* </span> |
| <a name="l00023"></a>00023 <span class="comment">* Version 1.0.1 2010/10/05 </span> |
| <a name="l00024"></a>00024 <span class="comment">* Production release and review comments incorporated. </span> |
| <a name="l00025"></a>00025 <span class="comment">* </span> |
| <a name="l00026"></a>00026 <span class="comment">* Version 1.0.0 2010/09/20 </span> |
| <a name="l00027"></a>00027 <span class="comment">* Production release and review comments incorporated. </span> |
| <a name="l00028"></a>00028 <span class="comment">* -------------------------------------------------------------------- */</span> |
| <a name="l00029"></a>00029 |
| <a name="l00030"></a>00030 <span class="preprocessor">#include "<a class="code" href="arm__math_8h.html">arm_math.h</a>"</span> |
| <a name="l00031"></a>00031 |
| <a name="l00056"></a><a class="code" href="group___cmplx_by_real_mult.html#ga715e4bb8e945b8ca51ec5237611697ce">00056</a> <span class="keywordtype">void</span> <a class="code" href="group___cmplx_by_real_mult.html#ga715e4bb8e945b8ca51ec5237611697ce" title="Q31 complex-by-real multiplication.">arm_cmplx_mult_real_q31</a>( |
| <a name="l00057"></a>00057 <a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a> * pSrcCmplx, |
| <a name="l00058"></a>00058 <a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a> * pSrcReal, |
| <a name="l00059"></a>00059 <a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a> * pCmplxDst, |
| <a name="l00060"></a>00060 uint32_t numSamples) |
| <a name="l00061"></a>00061 { |
| <a name="l00062"></a>00062 <a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a> in; <span class="comment">/* Temporary variable to store input value */</span> |
| <a name="l00063"></a>00063 |
| <a name="l00064"></a>00064 <span class="preprocessor">#ifndef ARM_MATH_CM0</span> |
| <a name="l00065"></a>00065 <span class="preprocessor"></span> |
| <a name="l00066"></a>00066 <span class="comment">/* Run the below code for Cortex-M4 and Cortex-M3 */</span> |
| <a name="l00067"></a>00067 uint32_t blkCnt; <span class="comment">/* loop counters */</span> |
| <a name="l00068"></a>00068 |
| <a name="l00069"></a>00069 <span class="comment">/* loop Unrolling */</span> |
| <a name="l00070"></a>00070 blkCnt = numSamples >> 2u; |
| <a name="l00071"></a>00071 |
| <a name="l00072"></a>00072 <span class="comment">/* First part of the processing with loop unrolling. Compute 4 outputs at a time. </span> |
| <a name="l00073"></a>00073 <span class="comment"> ** a second loop below computes the remaining 1 to 3 samples. */</span> |
| <a name="l00074"></a>00074 <span class="keywordflow">while</span>(blkCnt > 0u) |
| <a name="l00075"></a>00075 { |
| <a name="l00076"></a>00076 <span class="comment">/* C[2 * i] = A[2 * i] * B[i]. */</span> |
| <a name="l00077"></a>00077 <span class="comment">/* C[2 * i + 1] = A[2 * i + 1] * B[i]. */</span> |
| <a name="l00078"></a>00078 in = *pSrcReal++; |
| <a name="l00079"></a>00079 <span class="comment">/* store the result in the destination buffer. */</span> |
| <a name="l00080"></a>00080 *pCmplxDst++ = |
| <a name="l00081"></a>00081 (<a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a>) <a class="code" href="arm__math_8h.html#ad7373e53d3c2e1adfeafc8c2e9720b5c" title="Clips Q63 to Q31 values.">clip_q63_to_q31</a>(((<a class="code" href="arm__math_8h.html#a5aea1cb12fc02d9d44c8abf217eaa5c6" title="64-bit fractional data type in 1.63 format.">q63_t</a>) * pSrcCmplx++ * in) >> 31); |
| <a name="l00082"></a>00082 *pCmplxDst++ = |
| <a name="l00083"></a>00083 (<a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a>) <a class="code" href="arm__math_8h.html#ad7373e53d3c2e1adfeafc8c2e9720b5c" title="Clips Q63 to Q31 values.">clip_q63_to_q31</a>(((<a class="code" href="arm__math_8h.html#a5aea1cb12fc02d9d44c8abf217eaa5c6" title="64-bit fractional data type in 1.63 format.">q63_t</a>) * pSrcCmplx++ * in) >> 31); |
| <a name="l00084"></a>00084 |
| <a name="l00085"></a>00085 in = *pSrcReal++; |
| <a name="l00086"></a>00086 *pCmplxDst++ = |
| <a name="l00087"></a>00087 (<a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a>) <a class="code" href="arm__math_8h.html#ad7373e53d3c2e1adfeafc8c2e9720b5c" title="Clips Q63 to Q31 values.">clip_q63_to_q31</a>(((<a class="code" href="arm__math_8h.html#a5aea1cb12fc02d9d44c8abf217eaa5c6" title="64-bit fractional data type in 1.63 format.">q63_t</a>) * pSrcCmplx++ * in) >> 31); |
| <a name="l00088"></a>00088 *pCmplxDst++ = |
| <a name="l00089"></a>00089 (<a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a>) <a class="code" href="arm__math_8h.html#ad7373e53d3c2e1adfeafc8c2e9720b5c" title="Clips Q63 to Q31 values.">clip_q63_to_q31</a>(((<a class="code" href="arm__math_8h.html#a5aea1cb12fc02d9d44c8abf217eaa5c6" title="64-bit fractional data type in 1.63 format.">q63_t</a>) * pSrcCmplx++ * in) >> 31); |
| <a name="l00090"></a>00090 |
| <a name="l00091"></a>00091 in = *pSrcReal++; |
| <a name="l00092"></a>00092 *pCmplxDst++ = |
| <a name="l00093"></a>00093 (<a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a>) <a class="code" href="arm__math_8h.html#ad7373e53d3c2e1adfeafc8c2e9720b5c" title="Clips Q63 to Q31 values.">clip_q63_to_q31</a>(((<a class="code" href="arm__math_8h.html#a5aea1cb12fc02d9d44c8abf217eaa5c6" title="64-bit fractional data type in 1.63 format.">q63_t</a>) * pSrcCmplx++ * in) >> 31); |
| <a name="l00094"></a>00094 *pCmplxDst++ = |
| <a name="l00095"></a>00095 (<a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a>) <a class="code" href="arm__math_8h.html#ad7373e53d3c2e1adfeafc8c2e9720b5c" title="Clips Q63 to Q31 values.">clip_q63_to_q31</a>(((<a class="code" href="arm__math_8h.html#a5aea1cb12fc02d9d44c8abf217eaa5c6" title="64-bit fractional data type in 1.63 format.">q63_t</a>) * pSrcCmplx++ * in) >> 31); |
| <a name="l00096"></a>00096 |
| <a name="l00097"></a>00097 in = *pSrcReal++; |
| <a name="l00098"></a>00098 *pCmplxDst++ = |
| <a name="l00099"></a>00099 (<a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a>) <a class="code" href="arm__math_8h.html#ad7373e53d3c2e1adfeafc8c2e9720b5c" title="Clips Q63 to Q31 values.">clip_q63_to_q31</a>(((<a class="code" href="arm__math_8h.html#a5aea1cb12fc02d9d44c8abf217eaa5c6" title="64-bit fractional data type in 1.63 format.">q63_t</a>) * pSrcCmplx++ * in) >> 31); |
| <a name="l00100"></a>00100 *pCmplxDst++ = |
| <a name="l00101"></a>00101 (<a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a>) <a class="code" href="arm__math_8h.html#ad7373e53d3c2e1adfeafc8c2e9720b5c" title="Clips Q63 to Q31 values.">clip_q63_to_q31</a>(((<a class="code" href="arm__math_8h.html#a5aea1cb12fc02d9d44c8abf217eaa5c6" title="64-bit fractional data type in 1.63 format.">q63_t</a>) * pSrcCmplx++ * in) >> 31); |
| <a name="l00102"></a>00102 |
| <a name="l00103"></a>00103 <span class="comment">/* Decrement the numSamples loop counter */</span> |
| <a name="l00104"></a>00104 blkCnt--; |
| <a name="l00105"></a>00105 } |
| <a name="l00106"></a>00106 |
| <a name="l00107"></a>00107 <span class="comment">/* If the numSamples is not a multiple of 4, compute any remaining output samples here. </span> |
| <a name="l00108"></a>00108 <span class="comment"> ** No loop unrolling is used. */</span> |
| <a name="l00109"></a>00109 blkCnt = numSamples % 0x4u; |
| <a name="l00110"></a>00110 |
| <a name="l00111"></a>00111 <span class="keywordflow">while</span>(blkCnt > 0u) |
| <a name="l00112"></a>00112 { |
| <a name="l00113"></a>00113 <span class="comment">/* C[2 * i] = A[2 * i] * B[i]. */</span> |
| <a name="l00114"></a>00114 <span class="comment">/* C[2 * i + 1] = A[2 * i + 1] * B[i]. */</span> |
| <a name="l00115"></a>00115 in = *pSrcReal++; |
| <a name="l00116"></a>00116 <span class="comment">/* store the result in the destination buffer. */</span> |
| <a name="l00117"></a>00117 *pCmplxDst++ = |
| <a name="l00118"></a>00118 (<a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a>) <a class="code" href="arm__math_8h.html#ad7373e53d3c2e1adfeafc8c2e9720b5c" title="Clips Q63 to Q31 values.">clip_q63_to_q31</a>(((<a class="code" href="arm__math_8h.html#a5aea1cb12fc02d9d44c8abf217eaa5c6" title="64-bit fractional data type in 1.63 format.">q63_t</a>) * pSrcCmplx++ * in) >> 31); |
| <a name="l00119"></a>00119 *pCmplxDst++ = |
| <a name="l00120"></a>00120 (<a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a>) <a class="code" href="arm__math_8h.html#ad7373e53d3c2e1adfeafc8c2e9720b5c" title="Clips Q63 to Q31 values.">clip_q63_to_q31</a>(((<a class="code" href="arm__math_8h.html#a5aea1cb12fc02d9d44c8abf217eaa5c6" title="64-bit fractional data type in 1.63 format.">q63_t</a>) * pSrcCmplx++ * in) >> 31); |
| <a name="l00121"></a>00121 |
| <a name="l00122"></a>00122 <span class="comment">/* Decrement the numSamples loop counter */</span> |
| <a name="l00123"></a>00123 blkCnt--; |
| <a name="l00124"></a>00124 } |
| <a name="l00125"></a>00125 |
| <a name="l00126"></a>00126 <span class="preprocessor">#else</span> |
| <a name="l00127"></a>00127 <span class="preprocessor"></span> |
| <a name="l00128"></a>00128 <span class="comment">/* Run the below code for Cortex-M0 */</span> |
| <a name="l00129"></a>00129 |
| <a name="l00130"></a>00130 <span class="keywordflow">while</span>(numSamples > 0u) |
| <a name="l00131"></a>00131 { |
| <a name="l00132"></a>00132 <span class="comment">/* realOut = realA * realB. */</span> |
| <a name="l00133"></a>00133 <span class="comment">/* imagReal = imagA * realB. */</span> |
| <a name="l00134"></a>00134 in = *pSrcReal++; |
| <a name="l00135"></a>00135 <span class="comment">/* store the result in the destination buffer. */</span> |
| <a name="l00136"></a>00136 *pCmplxDst++ = |
| <a name="l00137"></a>00137 (<a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a>) <a class="code" href="arm__math_8h.html#ad7373e53d3c2e1adfeafc8c2e9720b5c" title="Clips Q63 to Q31 values.">clip_q63_to_q31</a>(((<a class="code" href="arm__math_8h.html#a5aea1cb12fc02d9d44c8abf217eaa5c6" title="64-bit fractional data type in 1.63 format.">q63_t</a>) * pSrcCmplx++ * in) >> 31); |
| <a name="l00138"></a>00138 *pCmplxDst++ = |
| <a name="l00139"></a>00139 (<a class="code" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0" title="32-bit fractional data type in 1.31 format.">q31_t</a>) <a class="code" href="arm__math_8h.html#ad7373e53d3c2e1adfeafc8c2e9720b5c" title="Clips Q63 to Q31 values.">clip_q63_to_q31</a>(((<a class="code" href="arm__math_8h.html#a5aea1cb12fc02d9d44c8abf217eaa5c6" title="64-bit fractional data type in 1.63 format.">q63_t</a>) * pSrcCmplx++ * in) >> 31); |
| <a name="l00140"></a>00140 |
| <a name="l00141"></a>00141 <span class="comment">/* Decrement the numSamples loop counter */</span> |
| <a name="l00142"></a>00142 numSamples--; |
| <a name="l00143"></a>00143 } |
| <a name="l00144"></a>00144 |
| <a name="l00145"></a>00145 <span class="preprocessor">#endif </span><span class="comment">/* #ifndef ARM_MATH_CM0 */</span> |
| <a name="l00146"></a>00146 |
| <a name="l00147"></a>00147 } |
| <a name="l00148"></a>00148 |
| </pre></div></div> |
| </div> |
| <!--- window showing the filter options --> |
| <div id="MSearchSelectWindow" |
| onmouseover="return searchBox.OnSearchSelectShow()" |
| onmouseout="return searchBox.OnSearchSelectHide()" |
| onkeydown="return searchBox.OnSearchSelectKey(event)"> |
| <a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(0)"><span class="SelectionMark"> </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>Defines</a></div> |
| |
| <!-- iframe showing the search results (closed by default) --> |
| <div id="MSearchResultsWindow"> |
| <iframe src="" frameborder="0" |
| name="MSearchResults" id="MSearchResults"> |
| </iframe> |
| </div> |
| |
| <hr class="footer"/><address class="footer"><small>Generated on Fri Jul 15 2011 13:16:15 for CMSIS DSP Software Library by  |
| <a href="http://www.doxygen.org/index.html"> |
| <img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.7.2 </small></address> |
| </body> |
| </html> |
