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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 /Documentation/DSP/html/group__negate.html
parent76177aa280494bb36d7a0bcbda1078d4db717020 (diff)
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Official ARM version: v5.4.0
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-<a href="#func-members">Functions</a> </div>
- <div class="headertitle">
-<div class="title">Vector Negate</div> </div>
-<div class="ingroups"><a class="el" href="group__group_math.html">Basic Math Functions</a></div></div><!--header-->
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-Functions</h2></td></tr>
-<tr class="memitem:ga2e169c4de6cc6e3ba4be9473531e6657"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__negate.html#ga2e169c4de6cc6e3ba4be9473531e6657">arm_negate_f32</a> (<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:ga2e169c4de6cc6e3ba4be9473531e6657"><td class="mdescLeft">&#160;</td><td class="mdescRight">Negates the elements of a floating-point vector. <a href="#ga2e169c4de6cc6e3ba4be9473531e6657"></a><br/></td></tr>
-<tr class="separator:ga2e169c4de6cc6e3ba4be9473531e6657"><td class="memSeparator" colspan="2">&#160;</td></tr>
-<tr class="memitem:ga0239a833d72cf00290b9723c394e5042"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__negate.html#ga0239a833d72cf00290b9723c394e5042">arm_negate_q15</a> (<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:ga0239a833d72cf00290b9723c394e5042"><td class="mdescLeft">&#160;</td><td class="mdescRight">Negates the elements of a Q15 vector. <a href="#ga0239a833d72cf00290b9723c394e5042"></a><br/></td></tr>
-<tr class="separator:ga0239a833d72cf00290b9723c394e5042"><td class="memSeparator" colspan="2">&#160;</td></tr>
-<tr class="memitem:ga2784c6887686a73dc7c364e2e41c776c"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__negate.html#ga2784c6887686a73dc7c364e2e41c776c">arm_negate_q31</a> (<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:ga2784c6887686a73dc7c364e2e41c776c"><td class="mdescLeft">&#160;</td><td class="mdescRight">Negates the elements of a Q31 vector. <a href="#ga2784c6887686a73dc7c364e2e41c776c"></a><br/></td></tr>
-<tr class="separator:ga2784c6887686a73dc7c364e2e41c776c"><td class="memSeparator" colspan="2">&#160;</td></tr>
-<tr class="memitem:gaae78fc079a43bdaa3055f9b32e2a1f4c"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__negate.html#gaae78fc079a43bdaa3055f9b32e2a1f4c">arm_negate_q7</a> (<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:gaae78fc079a43bdaa3055f9b32e2a1f4c"><td class="mdescLeft">&#160;</td><td class="mdescRight">Negates the elements of a Q7 vector. <a href="#gaae78fc079a43bdaa3055f9b32e2a1f4c"></a><br/></td></tr>
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-<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="ga2e169c4de6cc6e3ba4be9473531e6657"></a>
-<div class="memitem">
-<div class="memproto">
- <table class="memname">
- <tr>
- <td class="memname">void arm_negate_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>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>
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- <tr>
- <td></td>
- <td>)</td>
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-<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 the 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>
-
-</div>
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-<a class="anchor" id="ga0239a833d72cf00290b9723c394e5042"></a>
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-<div class="memproto">
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- <td class="memname">void arm_negate_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>pSrc</em>, </td>
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- <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>
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-</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 the 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>
-<p><b>Scaling and Overflow Behavior:</b> </p>
-<dl class="section user"><dt></dt><dd>The function uses saturating arithmetic. The Q15 value -1 (0x8000) will be saturated to the maximum allowable positive value 0x7FFF. </dd></dl>
-
-<p>References <a class="el" href="arm__math_8h.html#af0d54ec57b936994a34f073d0049ea3f">_SIMD32_OFFSET</a>, and <a class="el" href="arm__fir__example__f32_8c.html#ab6558f40a619c2502fbc24c880fd4fb0">blockSize</a>.</p>
-
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-<a class="anchor" id="ga2784c6887686a73dc7c364e2e41c776c"></a>
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- <td class="memname">void arm_negate_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>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>
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-</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 the vector </td></tr>
- </table>
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-</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. The Q31 value -1 (0x80000000) will be saturated to the maximum allowable positive value 0x7FFFFFFF. </dd></dl>
-
-<p>References <a class="el" href="arm__fir__example__f32_8c.html#ab6558f40a619c2502fbc24c880fd4fb0">blockSize</a>.</p>
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- <td class="memname">void arm_negate_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>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>
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-</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 the 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. The Q7 value -1 (0x80) will be saturated to the maximum allowable positive value 0x7F. </dd></dl>
-
-<p>References <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>
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