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<div class="header">
  <div class="summary">
<a href="#func-members">Functions</a>  </div>
  <div class="headertitle">
<div class="title">Complex-by-Real Multiplication</div>  </div>
<div class="ingroups"><a class="el" href="group__group_cmplx_math.html">Complex Math Functions</a></div></div><!--header-->
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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:ga9c18616f56cb4d3c0889ce0b339221ca"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group___cmplx_by_real_mult.html#ga9c18616f56cb4d3c0889ce0b339221ca">arm_cmplx_mult_real_f32</a> (<a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> *pSrcCmplx, <a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> *pSrcReal, <a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> *pCmplxDst, uint32_t numSamples)</td></tr>
<tr class="memdesc:ga9c18616f56cb4d3c0889ce0b339221ca"><td class="mdescLeft">&#160;</td><td class="mdescRight">Floating-point complex-by-real multiplication.  <a href="#ga9c18616f56cb4d3c0889ce0b339221ca"></a><br/></td></tr>
<tr class="separator:ga9c18616f56cb4d3c0889ce0b339221ca"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ga3bd8889dcb45980e1d3e53344df54e85"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group___cmplx_by_real_mult.html#ga3bd8889dcb45980e1d3e53344df54e85">arm_cmplx_mult_real_q15</a> (<a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> *pSrcCmplx, <a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> *pSrcReal, <a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> *pCmplxDst, uint32_t numSamples)</td></tr>
<tr class="memdesc:ga3bd8889dcb45980e1d3e53344df54e85"><td class="mdescLeft">&#160;</td><td class="mdescRight">Q15 complex-by-real multiplication.  <a href="#ga3bd8889dcb45980e1d3e53344df54e85"></a><br/></td></tr>
<tr class="separator:ga3bd8889dcb45980e1d3e53344df54e85"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ga715e4bb8e945b8ca51ec5237611697ce"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group___cmplx_by_real_mult.html#ga715e4bb8e945b8ca51ec5237611697ce">arm_cmplx_mult_real_q31</a> (<a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> *pSrcCmplx, <a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> *pSrcReal, <a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> *pCmplxDst, uint32_t numSamples)</td></tr>
<tr class="memdesc:ga715e4bb8e945b8ca51ec5237611697ce"><td class="mdescLeft">&#160;</td><td class="mdescRight">Q31 complex-by-real multiplication.  <a href="#ga715e4bb8e945b8ca51ec5237611697ce"></a><br/></td></tr>
<tr class="separator:ga715e4bb8e945b8ca51ec5237611697ce"><td class="memSeparator" colspan="2">&#160;</td></tr>
</table>
<a name="details" id="details"></a><h2 class="groupheader">Description</h2>
<p>Multiplies a complex vector by a real vector and generates a complex result. The data in the complex arrays is stored in an interleaved fashion (real, imag, real, imag, ...). The parameter <code>numSamples</code> represents the number of complex samples processed. The complex arrays have a total of <code>2*numSamples</code> real values while the real array has a total of <code>numSamples</code> real values.</p>
<p>The underlying algorithm is used:</p>
<pre>        
for(n=0; n&lt;numSamples; n++) {        
    pCmplxDst[(2*n)+0] = pSrcCmplx[(2*n)+0] * pSrcReal[n];        
    pCmplxDst[(2*n)+1] = pSrcCmplx[(2*n)+1] * pSrcReal[n];        
}        
</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="ga9c18616f56cb4d3c0889ce0b339221ca"></a>
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          <td class="memname">void arm_cmplx_mult_real_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>pSrcCmplx</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>pSrcReal</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>pCmplxDst</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">*pSrcCmplx</td><td>points to the complex input vector </td></tr>
    <tr><td class="paramdir">[in]</td><td class="paramname">*pSrcReal</td><td>points to the real input vector </td></tr>
    <tr><td class="paramdir">[out]</td><td class="paramname">*pCmplxDst</td><td>points to the complex output vector </td></tr>
    <tr><td class="paramdir">[in]</td><td class="paramname">numSamples</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="ga3bd8889dcb45980e1d3e53344df54e85"></a>
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<div class="memproto">
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        <tr>
          <td class="memname">void arm_cmplx_mult_real_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>pSrcCmplx</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>pSrcReal</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>pCmplxDst</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">*pSrcCmplx</td><td>points to the complex input vector </td></tr>
    <tr><td class="paramdir">[in]</td><td class="paramname">*pSrcReal</td><td>points to the real input vector </td></tr>
    <tr><td class="paramdir">[out]</td><td class="paramname">*pCmplxDst</td><td>points to the complex output vector </td></tr>
    <tr><td class="paramdir">[in]</td><td class="paramname">numSamples</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#a9de2e0a5785be82866bcb96012282248">__SIMD32</a>.</p>

</div>
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<a class="anchor" id="ga715e4bb8e945b8ca51ec5237611697ce"></a>
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          <td class="memname">void arm_cmplx_mult_real_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>pSrcCmplx</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>pSrcReal</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>pCmplxDst</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">*pSrcCmplx</td><td>points to the complex input vector </td></tr>
    <tr><td class="paramdir">[in]</td><td class="paramname">*pSrcReal</td><td>points to the real input vector </td></tr>
    <tr><td class="paramdir">[out]</td><td class="paramname">*pCmplxDst</td><td>points to the complex output vector </td></tr>
    <tr><td class="paramdir">[in]</td><td class="paramname">numSamples</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__math_8h.html#ad7373e53d3c2e1adfeafc8c2e9720b5c">clip_q63_to_q31()</a>.</p>

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