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<div class="header">
  <div class="summary">
<a href="#func-members">Functions</a>  </div>
  <div class="headertitle">
<div class="title">Complex Magnitude Squared</div>  </div>
<div class="ingroups"><a class="el" href="group__group_cmplx_math.html">Complex Math Functions</a></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:gaa7faccc0d96b061d8b7d0d7d82045074"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__cmplx__mag__squared.html#gaa7faccc0d96b061d8b7d0d7d82045074">arm_cmplx_mag_squared_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 numSamples)</td></tr>
<tr class="memdesc:gaa7faccc0d96b061d8b7d0d7d82045074"><td class="mdescLeft">&#160;</td><td class="mdescRight">Floating-point complex magnitude squared.  <a href="#gaa7faccc0d96b061d8b7d0d7d82045074"></a><br/></td></tr>
<tr class="separator:gaa7faccc0d96b061d8b7d0d7d82045074"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ga45537f576102d960d467eb722b8431f2"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__cmplx__mag__squared.html#ga45537f576102d960d467eb722b8431f2">arm_cmplx_mag_squared_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 numSamples)</td></tr>
<tr class="memdesc:ga45537f576102d960d467eb722b8431f2"><td class="mdescLeft">&#160;</td><td class="mdescRight">Q15 complex magnitude squared.  <a href="#ga45537f576102d960d467eb722b8431f2"></a><br/></td></tr>
<tr class="separator:ga45537f576102d960d467eb722b8431f2"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ga384b0538101e8c03fa4fa14271e63b04"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__cmplx__mag__squared.html#ga384b0538101e8c03fa4fa14271e63b04">arm_cmplx_mag_squared_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 numSamples)</td></tr>
<tr class="memdesc:ga384b0538101e8c03fa4fa14271e63b04"><td class="mdescLeft">&#160;</td><td class="mdescRight">Q31 complex magnitude squared.  <a href="#ga384b0538101e8c03fa4fa14271e63b04"></a><br/></td></tr>
<tr class="separator:ga384b0538101e8c03fa4fa14271e63b04"><td class="memSeparator" colspan="2">&#160;</td></tr>
</table>
<a name="details" id="details"></a><h2 class="groupheader">Description</h2>
<p>Computes the magnitude squared of the elements of a complex data vector.</p>
<p>The <code>pSrc</code> points to the source data and <code>pDst</code> points to the where the result should be written. <code>numSamples</code> specifies the number of complex samples in the input array and the data is stored in an interleaved fashion (real, imag, real, imag, ...). The input array has a total of <code>2*numSamples</code> values; the output array has a total of <code>numSamples</code> values.</p>
<p>The underlying algorithm is used:</p>
<pre>        
for(n=0; n&lt;numSamples; n++) {        
    pDst[n] = pSrc[(2*n)+0]^2 + pSrc[(2*n)+1]^2;        
}        
</pre><p>There are separate functions for floating-point, Q15, and Q31 data types. </p>
<h2 class="groupheader">Function Documentation</h2>
<a class="anchor" id="gaa7faccc0d96b061d8b7d0d7d82045074"></a>
<div class="memitem">
<div class="memproto">
      <table class="memname">
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          <td class="memname">void arm_cmplx_mag_squared_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>numSamples</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 complex input vector </td></tr>
    <tr><td class="paramdir">[out]</td><td class="paramname">*pDst</td><td>points to the real output vector </td></tr>
    <tr><td class="paramdir">[in]</td><td class="paramname">numSamples</td><td>number of complex samples in the input vector </td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>none. </dd></dl>

</div>
</div>
<a class="anchor" id="ga45537f576102d960d467eb722b8431f2"></a>
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<div class="memproto">
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          <td class="memname">void arm_cmplx_mag_squared_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>
        </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>numSamples</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="paramname">*pSrc</td><td>points to the complex input vector </td></tr>
    <tr><td class="paramname">*pDst</td><td>points to the real output vector </td></tr>
    <tr><td class="paramname">numSamples</td><td>number of complex samples in the input 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 implements 1.15 by 1.15 multiplications and finally output is converted into 3.13 format. </dd></dl>

<p>References <a class="el" href="arm__math_8h.html#a9de2e0a5785be82866bcb96012282248">__SIMD32</a>.</p>

</div>
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<a class="anchor" id="ga384b0538101e8c03fa4fa14271e63b04"></a>
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<div class="memproto">
      <table class="memname">
        <tr>
          <td class="memname">void arm_cmplx_mag_squared_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>numSamples</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="paramname">*pSrc</td><td>points to the complex input vector </td></tr>
    <tr><td class="paramname">*pDst</td><td>points to the real output vector </td></tr>
    <tr><td class="paramname">numSamples</td><td>number of complex samples in the input 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 implements 1.31 by 1.31 multiplications and finally output is converted into 3.29 format. Input down scaling is not required. </dd></dl>

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