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authorAli Labbene <ali.labbene@st.com>2019-12-11 08:59:21 +0100
committerAli Labbene <ali.labbene@st.com>2019-12-16 16:35:24 +0100
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tree8a6e0dda832555c692307869aed49d07ee7facfe /docs/DSP/html/group__BasicMult.html
parent76177aa280494bb36d7a0bcbda1078d4db717020 (diff)
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Official ARM version: v5.4.0
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+ <div id="projectname">CMSIS-DSP
+ &#160;<span id="projectnumber">Version 1.5.2</span>
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+ <div id="projectbrief">CMSIS DSP Software Library</div>
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+<a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(0)"><span class="SelectionMark">&#160;</span>All</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(1)"><span class="SelectionMark">&#160;</span>Data Structures</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(2)"><span class="SelectionMark">&#160;</span>Files</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(3)"><span class="SelectionMark">&#160;</span>Functions</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(4)"><span class="SelectionMark">&#160;</span>Variables</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(5)"><span class="SelectionMark">&#160;</span>Typedefs</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(6)"><span class="SelectionMark">&#160;</span>Enumerations</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(7)"><span class="SelectionMark">&#160;</span>Enumerator</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(8)"><span class="SelectionMark">&#160;</span>Macros</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(9)"><span class="SelectionMark">&#160;</span>Groups</a><a class="SelectItem" href="javascript:void(0)" onclick="searchBox.OnSelectItem(10)"><span class="SelectionMark">&#160;</span>Pages</a></div>
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+<div class="header">
+ <div class="summary">
+<a href="#func-members">Functions</a> </div>
+ <div class="headertitle">
+<div class="title">Vector Multiplication<div class="ingroups"><a class="el" href="group__groupMath.html">Basic Math Functions</a></div></div> </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:gaca3f0b8227da431ab29225b88888aa32"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__BasicMult.html#gaca3f0b8227da431ab29225b88888aa32">arm_mult_f32</a> (<a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> *pSrcA, <a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> *pSrcB, <a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> *pDst, uint32_t <a class="el" href="arm__variance__example__f32_8c.html#ab6558f40a619c2502fbc24c880fd4fb0">blockSize</a>)</td></tr>
+<tr class="memdesc:gaca3f0b8227da431ab29225b88888aa32"><td class="mdescLeft">&#160;</td><td class="mdescRight">Floating-point vector multiplication. <a href="#gaca3f0b8227da431ab29225b88888aa32">More...</a><br/></td></tr>
+<tr class="separator:gaca3f0b8227da431ab29225b88888aa32"><td class="memSeparator" colspan="2">&#160;</td></tr>
+<tr class="memitem:gafb0778d27ed98a2a6f2ecb7d48cc8c75"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__BasicMult.html#gafb0778d27ed98a2a6f2ecb7d48cc8c75">arm_mult_q15</a> (<a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> *pSrcA, <a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> *pSrcB, <a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> *pDst, uint32_t <a class="el" href="arm__variance__example__f32_8c.html#ab6558f40a619c2502fbc24c880fd4fb0">blockSize</a>)</td></tr>
+<tr class="memdesc:gafb0778d27ed98a2a6f2ecb7d48cc8c75"><td class="mdescLeft">&#160;</td><td class="mdescRight">Q15 vector multiplication. <a href="#gafb0778d27ed98a2a6f2ecb7d48cc8c75">More...</a><br/></td></tr>
+<tr class="separator:gafb0778d27ed98a2a6f2ecb7d48cc8c75"><td class="memSeparator" colspan="2">&#160;</td></tr>
+<tr class="memitem:ga3528c0f54a0607acc603f0490d3ca6c6"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__BasicMult.html#ga3528c0f54a0607acc603f0490d3ca6c6">arm_mult_q31</a> (<a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> *pSrcA, <a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> *pSrcB, <a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> *pDst, uint32_t <a class="el" href="arm__variance__example__f32_8c.html#ab6558f40a619c2502fbc24c880fd4fb0">blockSize</a>)</td></tr>
+<tr class="memdesc:ga3528c0f54a0607acc603f0490d3ca6c6"><td class="mdescLeft">&#160;</td><td class="mdescRight">Q31 vector multiplication. <a href="#ga3528c0f54a0607acc603f0490d3ca6c6">More...</a><br/></td></tr>
+<tr class="separator:ga3528c0f54a0607acc603f0490d3ca6c6"><td class="memSeparator" colspan="2">&#160;</td></tr>
+<tr class="memitem:ga16677275ed83ff0878da531e875c27ef"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__BasicMult.html#ga16677275ed83ff0878da531e875c27ef">arm_mult_q7</a> (<a class="el" href="arm__math_8h.html#ae541b6f232c305361e9b416fc9eed263">q7_t</a> *pSrcA, <a class="el" href="arm__math_8h.html#ae541b6f232c305361e9b416fc9eed263">q7_t</a> *pSrcB, <a class="el" href="arm__math_8h.html#ae541b6f232c305361e9b416fc9eed263">q7_t</a> *pDst, uint32_t <a class="el" href="arm__variance__example__f32_8c.html#ab6558f40a619c2502fbc24c880fd4fb0">blockSize</a>)</td></tr>
+<tr class="memdesc:ga16677275ed83ff0878da531e875c27ef"><td class="mdescLeft">&#160;</td><td class="mdescRight">Q7 vector multiplication. <a href="#ga16677275ed83ff0878da531e875c27ef">More...</a><br/></td></tr>
+<tr class="separator:ga16677275ed83ff0878da531e875c27ef"><td class="memSeparator" colspan="2">&#160;</td></tr>
+</table>
+<a name="details" id="details"></a><h2 class="groupheader">Description</h2>
+<p>Element-by-element multiplication of two vectors.</p>
+<pre>
+ pDst[n] = pSrcA[n] * pSrcB[n], 0 &lt;= n &lt; blockSize.
+</pre><p>There are separate functions for floating-point, Q7, Q15, and Q31 data types. </p>
+<h2 class="groupheader">Function Documentation</h2>
+<a class="anchor" id="gaca3f0b8227da431ab29225b88888aa32"></a>
+<div class="memitem">
+<div class="memproto">
+ <table class="memname">
+ <tr>
+ <td class="memname">void arm_mult_f32 </td>
+ <td>(</td>
+ <td class="paramtype"><a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> *&#160;</td>
+ <td class="paramname"><em>pSrcA</em>, </td>
+ </tr>
+ <tr>
+ <td class="paramkey"></td>
+ <td></td>
+ <td class="paramtype"><a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> *&#160;</td>
+ <td class="paramname"><em>pSrcB</em>, </td>
+ </tr>
+ <tr>
+ <td class="paramkey"></td>
+ <td></td>
+ <td class="paramtype"><a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> *&#160;</td>
+ <td class="paramname"><em>pDst</em>, </td>
+ </tr>
+ <tr>
+ <td class="paramkey"></td>
+ <td></td>
+ <td class="paramtype">uint32_t&#160;</td>
+ <td class="paramname"><em>blockSize</em>&#160;</td>
+ </tr>
+ <tr>
+ <td></td>
+ <td>)</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">*pSrcA</td><td>points to the first input vector </td></tr>
+ <tr><td class="paramdir">[in]</td><td class="paramname">*pSrcB</td><td>points to the second input vector </td></tr>
+ <tr><td class="paramdir">[out]</td><td class="paramname">*pDst</td><td>points to the output vector </td></tr>
+ <tr><td class="paramdir">[in]</td><td class="paramname">blockSize</td><td>number of samples in each vector </td></tr>
+ </table>
+ </dd>
+</dl>
+<dl class="section return"><dt>Returns</dt><dd>none. </dd></dl>
+
+<p>References <a class="el" href="arm__fir__example__f32_8c.html#ab6558f40a619c2502fbc24c880fd4fb0">blockSize</a>.</p>
+
+<p>Referenced by <a class="el" href="group__DCT4__IDCT4.html#gafd538d68886848bc090ec2b0d364cc81">arm_dct4_f32()</a>, and <a class="el" href="arm__dotproduct__example__f32_8c.html#a52d2cba30e6946c95578be946ac12a65">main()</a>.</p>
+
+</div>
+</div>
+<a class="anchor" id="gafb0778d27ed98a2a6f2ecb7d48cc8c75"></a>
+<div class="memitem">
+<div class="memproto">
+ <table class="memname">
+ <tr>
+ <td class="memname">void arm_mult_q15 </td>
+ <td>(</td>
+ <td class="paramtype"><a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> *&#160;</td>
+ <td class="paramname"><em>pSrcA</em>, </td>
+ </tr>
+ <tr>
+ <td class="paramkey"></td>
+ <td></td>
+ <td class="paramtype"><a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> *&#160;</td>
+ <td class="paramname"><em>pSrcB</em>, </td>
+ </tr>
+ <tr>
+ <td class="paramkey"></td>
+ <td></td>
+ <td class="paramtype"><a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> *&#160;</td>
+ <td class="paramname"><em>pDst</em>, </td>
+ </tr>
+ <tr>
+ <td class="paramkey"></td>
+ <td></td>
+ <td class="paramtype">uint32_t&#160;</td>
+ <td class="paramname"><em>blockSize</em>&#160;</td>
+ </tr>
+ <tr>
+ <td></td>
+ <td>)</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">*pSrcA</td><td>points to the first input vector </td></tr>
+ <tr><td class="paramdir">[in]</td><td class="paramname">*pSrcB</td><td>points to the second input vector </td></tr>
+ <tr><td class="paramdir">[out]</td><td class="paramname">*pDst</td><td>points to the output vector </td></tr>
+ <tr><td class="paramdir">[in]</td><td class="paramname">blockSize</td><td>number of samples in each vector </td></tr>
+ </table>
+ </dd>
+</dl>
+<dl class="section return"><dt>Returns</dt><dd>none.</dd></dl>
+<p><b>Scaling and Overflow Behavior:</b> </p>
+<dl class="section user"><dt></dt><dd>The function uses saturating arithmetic. Results outside of the allowable Q15 range [0x8000 0x7FFF] will be saturated. </dd></dl>
+
+<p>References <a class="el" href="arm__math_8h.html#aa505179349146cf6186640b4c8b47714">__PKHBT</a>, <a class="el" href="arm__math_8h.html#a9de2e0a5785be82866bcb96012282248">__SIMD32</a>, and <a class="el" href="arm__fir__example__f32_8c.html#ab6558f40a619c2502fbc24c880fd4fb0">blockSize</a>.</p>
+
+<p>Referenced by <a class="el" href="group__DCT4__IDCT4.html#ga114cb9635059f678df291fcc887aaf2b">arm_dct4_q15()</a>.</p>
+
+</div>
+</div>
+<a class="anchor" id="ga3528c0f54a0607acc603f0490d3ca6c6"></a>
+<div class="memitem">
+<div class="memproto">
+ <table class="memname">
+ <tr>
+ <td class="memname">void arm_mult_q31 </td>
+ <td>(</td>
+ <td class="paramtype"><a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> *&#160;</td>
+ <td class="paramname"><em>pSrcA</em>, </td>
+ </tr>
+ <tr>
+ <td class="paramkey"></td>
+ <td></td>
+ <td class="paramtype"><a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> *&#160;</td>
+ <td class="paramname"><em>pSrcB</em>, </td>
+ </tr>
+ <tr>
+ <td class="paramkey"></td>
+ <td></td>
+ <td class="paramtype"><a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> *&#160;</td>
+ <td class="paramname"><em>pDst</em>, </td>
+ </tr>
+ <tr>
+ <td class="paramkey"></td>
+ <td></td>
+ <td class="paramtype">uint32_t&#160;</td>
+ <td class="paramname"><em>blockSize</em>&#160;</td>
+ </tr>
+ <tr>
+ <td></td>
+ <td>)</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">*pSrcA</td><td>points to the first input vector </td></tr>
+ <tr><td class="paramdir">[in]</td><td class="paramname">*pSrcB</td><td>points to the second input vector </td></tr>
+ <tr><td class="paramdir">[out]</td><td class="paramname">*pDst</td><td>points to the output vector </td></tr>
+ <tr><td class="paramdir">[in]</td><td class="paramname">blockSize</td><td>number of samples in each vector </td></tr>
+ </table>
+ </dd>
+</dl>
+<dl class="section return"><dt>Returns</dt><dd>none.</dd></dl>
+<p><b>Scaling and Overflow Behavior:</b> </p>
+<dl class="section user"><dt></dt><dd>The function uses saturating arithmetic. Results outside of the allowable Q31 range[0x80000000 0x7FFFFFFF] will be saturated. </dd></dl>
+
+<p>References <a class="el" href="arm__fir__example__f32_8c.html#ab6558f40a619c2502fbc24c880fd4fb0">blockSize</a>, and <a class="el" href="arm__math_8h.html#a9a94b78de0f083bd8fadf3c3abe40431">clip_q63_to_q31()</a>.</p>
+
+<p>Referenced by <a class="el" href="group__DCT4__IDCT4.html#gad04d0baab6ed081d8e8afe02538eb80b">arm_dct4_q31()</a>.</p>
+
+</div>
+</div>
+<a class="anchor" id="ga16677275ed83ff0878da531e875c27ef"></a>
+<div class="memitem">
+<div class="memproto">
+ <table class="memname">
+ <tr>
+ <td class="memname">void arm_mult_q7 </td>
+ <td>(</td>
+ <td class="paramtype"><a class="el" href="arm__math_8h.html#ae541b6f232c305361e9b416fc9eed263">q7_t</a> *&#160;</td>
+ <td class="paramname"><em>pSrcA</em>, </td>
+ </tr>
+ <tr>
+ <td class="paramkey"></td>
+ <td></td>
+ <td class="paramtype"><a class="el" href="arm__math_8h.html#ae541b6f232c305361e9b416fc9eed263">q7_t</a> *&#160;</td>
+ <td class="paramname"><em>pSrcB</em>, </td>
+ </tr>
+ <tr>
+ <td class="paramkey"></td>
+ <td></td>
+ <td class="paramtype"><a class="el" href="arm__math_8h.html#ae541b6f232c305361e9b416fc9eed263">q7_t</a> *&#160;</td>
+ <td class="paramname"><em>pDst</em>, </td>
+ </tr>
+ <tr>
+ <td class="paramkey"></td>
+ <td></td>
+ <td class="paramtype">uint32_t&#160;</td>
+ <td class="paramname"><em>blockSize</em>&#160;</td>
+ </tr>
+ <tr>
+ <td></td>
+ <td>)</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">*pSrcA</td><td>points to the first input vector </td></tr>
+ <tr><td class="paramdir">[in]</td><td class="paramname">*pSrcB</td><td>points to the second input vector </td></tr>
+ <tr><td class="paramdir">[out]</td><td class="paramname">*pDst</td><td>points to the output vector </td></tr>
+ <tr><td class="paramdir">[in]</td><td class="paramname">blockSize</td><td>number of samples in each vector </td></tr>
+ </table>
+ </dd>
+</dl>
+<dl class="section return"><dt>Returns</dt><dd>none.</dd></dl>
+<p><b>Scaling and Overflow Behavior:</b> </p>
+<dl class="section user"><dt></dt><dd>The function uses saturating arithmetic. Results outside of the allowable Q7 range [0x80 0x7F] will be saturated. </dd></dl>
+
+<p>References <a class="el" href="arm__math_8h.html#a3ebff224ad44c217fde9f530342e2960">__PACKq7</a>, <a class="el" href="arm__math_8h.html#a9de2e0a5785be82866bcb96012282248">__SIMD32</a>, and <a class="el" href="arm__fir__example__f32_8c.html#ab6558f40a619c2502fbc24c880fd4fb0">blockSize</a>.</p>
+
+</div>
+</div>
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