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<title>CMSIS-DSP: Convert 16-bit Integer value</title>
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<div id="projectname">CMSIS-DSP
&#160;<span id="projectnumber">Version 1.5.1</span>
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<div id="projectbrief">CMSIS DSP Software Library</div>
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<div class="title">Convert 16-bit Integer value<div class="ingroups"><a class="el" href="group__groupSupport.html">Support Functions</a></div></div> </div>
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="func-members"></a>
Functions</h2></td></tr>
<tr class="memitem:gaf8b0d2324de273fc430b0e61ad4e9eb2"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__q15__to__x.html#gaf8b0d2324de273fc430b0e61ad4e9eb2">arm_q15_to_float</a> (<a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_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:gaf8b0d2324de273fc430b0e61ad4e9eb2"><td class="mdescLeft">&#160;</td><td class="mdescRight">Converts the elements of the Q15 vector to floating-point vector. <a href="#gaf8b0d2324de273fc430b0e61ad4e9eb2">More...</a><br/></td></tr>
<tr class="separator:gaf8b0d2324de273fc430b0e61ad4e9eb2"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ga7ba2d87366990ad5380439e2b4a4c0a5"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__q15__to__x.html#ga7ba2d87366990ad5380439e2b4a4c0a5">arm_q15_to_q31</a> (<a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_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:ga7ba2d87366990ad5380439e2b4a4c0a5"><td class="mdescLeft">&#160;</td><td class="mdescRight">Converts the elements of the Q15 vector to Q31 vector. <a href="#ga7ba2d87366990ad5380439e2b4a4c0a5">More...</a><br/></td></tr>
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<tr class="memitem:ga8fb31855ff8cce09c2ec9308f48ded69"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__q15__to__x.html#ga8fb31855ff8cce09c2ec9308f48ded69">arm_q15_to_q7</a> (<a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_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:ga8fb31855ff8cce09c2ec9308f48ded69"><td class="mdescLeft">&#160;</td><td class="mdescRight">Converts the elements of the Q15 vector to Q7 vector. <a href="#ga8fb31855ff8cce09c2ec9308f48ded69">More...</a><br/></td></tr>
<tr class="separator:ga8fb31855ff8cce09c2ec9308f48ded69"><td class="memSeparator" colspan="2">&#160;</td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Description</h2>
<h2 class="groupheader">Function Documentation</h2>
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<td class="memname">void arm_q15_to_float </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>
</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 the Q15 input vector </td></tr>
<tr><td class="paramdir">[out]</td><td class="paramname">*pDst</td><td>points to the floating-point output vector </td></tr>
<tr><td class="paramdir">[in]</td><td class="paramname">blockSize</td><td>length of the input vector </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>none.</dd></dl>
<dl class="section user"><dt>Description:</dt><dd></dd></dl>
<p>The equation used for the conversion process is:</p>
<pre>
pDst[n] = (float32_t) pSrc[n] / 32768; 0 &lt;= n &lt; blockSize.
</pre>
<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_q15_to_q31 </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>
</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 Q15 input vector </td></tr>
<tr><td class="paramdir">[out]</td><td class="paramname">*pDst</td><td>points to the Q31 output vector </td></tr>
<tr><td class="paramdir">[in]</td><td class="paramname">blockSize</td><td>length of the input vector </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>none.</dd></dl>
<dl class="section user"><dt>Description:</dt><dd></dd></dl>
<p>The equation used for the conversion process is:</p>
<pre>
pDst[n] = (q31_t) pSrc[n] &lt;&lt; 16; 0 &lt;= n &lt; blockSize.
</pre>
<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>
</div>
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<div class="memproto">
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<td class="memname">void arm_q15_to_q7 </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>
</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 Q15 input vector </td></tr>
<tr><td class="paramdir">[out]</td><td class="paramname">*pDst</td><td>points to the Q7 output vector </td></tr>
<tr><td class="paramdir">[in]</td><td class="paramname">blockSize</td><td>length of the input vector </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>none.</dd></dl>
<dl class="section user"><dt>Description:</dt><dd></dd></dl>
<p>The equation used for the conversion process is:</p>
<pre>
pDst[n] = (q7_t) pSrc[n] &gt;&gt; 8; 0 &lt;= n &lt; blockSize.
</pre>
<p>References <a class="el" href="arm__math_8h.html#aa505179349146cf6186640b4c8b47714">__PKHBT</a>, <a class="el" href="arm__math_8h.html#ac4be483b8d98e977a69baf4a292a76fe">__PKHTB</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>
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