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authorrihab kouki <rihab.kouki@st.com>2020-07-28 11:24:49 +0100
committerrihab kouki <rihab.kouki@st.com>2020-07-28 11:24:49 +0100
commit96d6da4e252b06dcfdc041e7df23e86161c33007 (patch)
treea262f59bb1db7ec7819acae435f5049cbe5e2354 /docs/DSP/html/group__BasicNegate.html
parent9f95ff5b6ba01db09552b84a0ab79607060a2666 (diff)
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+<title>CMSIS-DSP: Vector Negate</title>
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+ <div id="projectname">CMSIS-DSP
+ &#160;<span id="projectnumber">Version 1.7.0</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 Negate<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:ga7d9cfa32eafae01d3dbdcaf05052f431"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__BasicNegate.html#ga7d9cfa32eafae01d3dbdcaf05052f431">arm_negate_f32</a> (const <a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> *pSrc, <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:ga7d9cfa32eafae01d3dbdcaf05052f431"><td class="mdescLeft">&#160;</td><td class="mdescRight">Negates the elements of a floating-point vector. <a href="#ga7d9cfa32eafae01d3dbdcaf05052f431">More...</a><br/></td></tr>
+<tr class="separator:ga7d9cfa32eafae01d3dbdcaf05052f431"><td class="memSeparator" colspan="2">&#160;</td></tr>
+<tr class="memitem:ga55b8bbbcd318d5142925bc221db30186"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__BasicNegate.html#ga55b8bbbcd318d5142925bc221db30186">arm_negate_q15</a> (const <a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> *pSrc, <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:ga55b8bbbcd318d5142925bc221db30186"><td class="mdescLeft">&#160;</td><td class="mdescRight">Negates the elements of a Q15 vector. <a href="#ga55b8bbbcd318d5142925bc221db30186">More...</a><br/></td></tr>
+<tr class="separator:ga55b8bbbcd318d5142925bc221db30186"><td class="memSeparator" colspan="2">&#160;</td></tr>
+<tr class="memitem:gad5054d19c205eebab5f2c6e42d8cbb3c"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__BasicNegate.html#gad5054d19c205eebab5f2c6e42d8cbb3c">arm_negate_q31</a> (const <a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> *pSrc, <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:gad5054d19c205eebab5f2c6e42d8cbb3c"><td class="mdescLeft">&#160;</td><td class="mdescRight">Negates the elements of a Q31 vector. <a href="#gad5054d19c205eebab5f2c6e42d8cbb3c">More...</a><br/></td></tr>
+<tr class="separator:gad5054d19c205eebab5f2c6e42d8cbb3c"><td class="memSeparator" colspan="2">&#160;</td></tr>
+<tr class="memitem:gaea178c9f486ed4704f8723a2efee271c"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__BasicNegate.html#gaea178c9f486ed4704f8723a2efee271c">arm_negate_q7</a> (const <a class="el" href="arm__math_8h.html#ae541b6f232c305361e9b416fc9eed263">q7_t</a> *pSrc, <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:gaea178c9f486ed4704f8723a2efee271c"><td class="mdescLeft">&#160;</td><td class="mdescRight">Negates the elements of a Q7 vector. <a href="#gaea178c9f486ed4704f8723a2efee271c">More...</a><br/></td></tr>
+<tr class="separator:gaea178c9f486ed4704f8723a2efee271c"><td class="memSeparator" colspan="2">&#160;</td></tr>
+</table>
+<a name="details" id="details"></a><h2 class="groupheader">Description</h2>
+<p>Negates the elements of a vector.</p>
+<pre>
+ pDst[n] = -pSrc[n], 0 &lt;= n &lt; blockSize.
+</pre><p>The functions support in-place computation allowing the source and destination pointers to reference the same memory buffer. There are separate functions for floating-point, Q7, Q15, and Q31 data types. </p>
+<h2 class="groupheader">Function Documentation</h2>
+<a class="anchor" id="ga7d9cfa32eafae01d3dbdcaf05052f431"></a>
+<div class="memitem">
+<div class="memproto">
+ <table class="memname">
+ <tr>
+ <td class="memname">void arm_negate_f32 </td>
+ <td>(</td>
+ <td class="paramtype">const <a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> *&#160;</td>
+ <td class="paramname"><em>pSrc</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">pSrc</td><td>points to input vector. </td></tr>
+ <tr><td class="paramdir">[out]</td><td class="paramname">pDst</td><td>points to 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>
+
+</div>
+</div>
+<a class="anchor" id="ga55b8bbbcd318d5142925bc221db30186"></a>
+<div class="memitem">
+<div class="memproto">
+ <table class="memname">
+ <tr>
+ <td class="memname">void arm_negate_q15 </td>
+ <td>(</td>
+ <td class="paramtype">const <a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> *&#160;</td>
+ <td class="paramname"><em>pSrc</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">pSrc</td><td>points to the 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>
+<dl class="section user"><dt>Conditions for optimum performance</dt><dd>Input and output buffers should be aligned by 32-bit </dd></dl>
+<dl class="section user"><dt>Scaling and Overflow Behavior</dt><dd>The function uses saturating arithmetic. The Q15 value -1 (0x8000) is saturated to the maximum allowable positive value 0x7FFF. </dd></dl>
+
+</div>
+</div>
+<a class="anchor" id="gad5054d19c205eebab5f2c6e42d8cbb3c"></a>
+<div class="memitem">
+<div class="memproto">
+ <table class="memname">
+ <tr>
+ <td class="memname">void arm_negate_q31 </td>
+ <td>(</td>
+ <td class="paramtype">const <a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> *&#160;</td>
+ <td class="paramname"><em>pSrc</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">pSrc</td><td>points to the 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>
+<dl class="section user"><dt>Scaling and Overflow Behavior</dt><dd>The function uses saturating arithmetic. The Q31 value -1 (0x80000000) is saturated to the maximum allowable positive value 0x7FFFFFFF. </dd></dl>
+
+</div>
+</div>
+<a class="anchor" id="gaea178c9f486ed4704f8723a2efee271c"></a>
+<div class="memitem">
+<div class="memproto">
+ <table class="memname">
+ <tr>
+ <td class="memname">void arm_negate_q7 </td>
+ <td>(</td>
+ <td class="paramtype">const <a class="el" href="arm__math_8h.html#ae541b6f232c305361e9b416fc9eed263">q7_t</a> *&#160;</td>
+ <td class="paramname"><em>pSrc</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">pSrc</td><td>points to the 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>
+<dl class="section user"><dt>Scaling and Overflow Behavior</dt><dd>The function uses saturating arithmetic. The Q7 value -1 (0x80) is saturated to the maximum allowable positive value 0x7F. </dd></dl>
+
+</div>
+</div>
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