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<div class="title">Complex Magnitude<div class="ingroups"><a class="el" href="group__groupCmplxMath.html">Complex Math Functions</a></div></div> </div>
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<table class="memberdecls">
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="func-members"></a>
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Functions</h2></td></tr>
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<tr class="memitem:gae45024c497392cde2ae358a76d435213"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__cmplx__mag.html#gae45024c497392cde2ae358a76d435213">arm_cmplx_mag_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>
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<tr class="memdesc:gae45024c497392cde2ae358a76d435213"><td class="mdescLeft"> </td><td class="mdescRight">Floating-point complex magnitude. <a href="#gae45024c497392cde2ae358a76d435213">More...</a><br/></td></tr>
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<tr class="separator:gae45024c497392cde2ae358a76d435213"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ga0a4a8f77a6a51d9b3f3b9d729f85b7a4"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__cmplx__mag.html#ga0a4a8f77a6a51d9b3f3b9d729f85b7a4">arm_cmplx_mag_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>
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<tr class="memdesc:ga0a4a8f77a6a51d9b3f3b9d729f85b7a4"><td class="mdescLeft"> </td><td class="mdescRight">Q15 complex magnitude. <a href="#ga0a4a8f77a6a51d9b3f3b9d729f85b7a4">More...</a><br/></td></tr>
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<tr class="separator:ga0a4a8f77a6a51d9b3f3b9d729f85b7a4"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ga14f82f9230e9d96d5b9774e2fefcb7be"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__cmplx__mag.html#ga14f82f9230e9d96d5b9774e2fefcb7be">arm_cmplx_mag_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>
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<tr class="memdesc:ga14f82f9230e9d96d5b9774e2fefcb7be"><td class="mdescLeft"> </td><td class="mdescRight">Q31 complex magnitude. <a href="#ga14f82f9230e9d96d5b9774e2fefcb7be">More...</a><br/></td></tr>
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<tr class="separator:ga14f82f9230e9d96d5b9774e2fefcb7be"><td class="memSeparator" colspan="2"> </td></tr>
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</table>
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<a name="details" id="details"></a><h2 class="groupheader">Description</h2>
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<p>Computes the magnitude of the elements of a complex data vector.</p>
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<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. The underlying algorithm is used:</p>
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<pre>
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for(n=0; n<numSamples; n++) {
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pDst[n] = sqrt(pSrc[(2*n)+0]^2 + pSrc[(2*n)+1]^2);
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}
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</pre><p>There are separate functions for floating-point, Q15, and Q31 data types. </p>
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<h2 class="groupheader">Function Documentation</h2>
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<a class="anchor" id="gae45024c497392cde2ae358a76d435213"></a>
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<div class="memproto">
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<td class="memname">void arm_cmplx_mag_f32 </td>
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<td>(</td>
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<td class="paramtype"><a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> * </td>
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<td class="paramname"><em>pSrc</em>, </td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype"><a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> * </td>
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<td class="paramname"><em>pDst</em>, </td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">uint32_t </td>
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<td class="paramname"><em>numSamples</em> </td>
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</tr>
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<tr>
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<td></td>
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<td>)</td>
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<td></td><td></td>
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</tr>
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</table>
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</div><div class="memdoc">
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<dl class="params"><dt>Parameters</dt><dd>
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<table class="params">
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<tr><td class="paramdir">[in]</td><td class="paramname">*pSrc</td><td>points to complex input buffer </td></tr>
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<tr><td class="paramdir">[out]</td><td class="paramname">*pDst</td><td>points to real output buffer </td></tr>
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<tr><td class="paramdir">[in]</td><td class="paramname">numSamples</td><td>number of complex samples in the input vector </td></tr>
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</table>
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</dd>
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</dl>
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<dl class="section return"><dt>Returns</dt><dd>none. </dd></dl>
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<p>References <a class="el" href="group__SQRT.html#ga697d82c2747a3302cf44e7c9583da2e8">arm_sqrt_f32()</a>.</p>
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<p>Referenced by <a class="el" href="arm__fft__bin__example__f32_8c.html#a52d2cba30e6946c95578be946ac12a65">main()</a>.</p>
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</div>
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</div>
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<a class="anchor" id="ga0a4a8f77a6a51d9b3f3b9d729f85b7a4"></a>
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<div class="memitem">
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<td class="memname">void arm_cmplx_mag_q15 </td>
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<td>(</td>
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<td class="paramtype"><a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> * </td>
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<td class="paramname"><em>pSrc</em>, </td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype"><a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> * </td>
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<td class="paramname"><em>pDst</em>, </td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">uint32_t </td>
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<td class="paramname"><em>numSamples</em> </td>
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</tr>
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<tr>
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<td></td>
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<td>)</td>
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<td></td><td></td>
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</tr>
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</table>
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</div><div class="memdoc">
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<dl class="params"><dt>Parameters</dt><dd>
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<table class="params">
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<tr><td class="paramname">*pSrc</td><td>points to the complex input vector </td></tr>
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<tr><td class="paramname">*pDst</td><td>points to the real output vector </td></tr>
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<tr><td class="paramname">numSamples</td><td>number of complex samples in the input vector </td></tr>
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</table>
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</dd>
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</dl>
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<dl class="section return"><dt>Returns</dt><dd>none.</dd></dl>
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<p><b>Scaling and Overflow Behavior:</b> </p>
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<dl class="section user"><dt></dt><dd>The function implements 1.15 by 1.15 multiplications and finally output is converted into 2.14 format. </dd></dl>
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<p>References <a class="el" href="arm__math_8h.html#a9de2e0a5785be82866bcb96012282248">__SIMD32</a>, <a class="el" href="arm__math_8h.html#a2eed05660fedbe3fbd0b6dbb1315cfc3">__SMUAD()</a>, and <a class="el" href="group__SQRT.html#ga5abe5ca724f3e15849662b03752c1238">arm_sqrt_q15()</a>.</p>
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</div>
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</div>
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<a class="anchor" id="ga14f82f9230e9d96d5b9774e2fefcb7be"></a>
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<div class="memitem">
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<table class="memname">
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<tr>
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<td class="memname">void arm_cmplx_mag_q31 </td>
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<td>(</td>
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<td class="paramtype"><a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> * </td>
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<td class="paramname"><em>pSrc</em>, </td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype"><a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> * </td>
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<td class="paramname"><em>pDst</em>, </td>
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</tr>
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<tr>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">uint32_t </td>
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<td class="paramname"><em>numSamples</em> </td>
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</tr>
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<tr>
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<td></td>
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<td>)</td>
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<td></td><td></td>
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</tr>
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</table>
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</div><div class="memdoc">
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<dl class="params"><dt>Parameters</dt><dd>
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<table class="params">
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<tr><td class="paramname">*pSrc</td><td>points to the complex input vector </td></tr>
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<tr><td class="paramname">*pDst</td><td>points to the real output vector </td></tr>
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<tr><td class="paramname">numSamples</td><td>number of complex samples in the input vector </td></tr>
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</table>
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</dd>
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</dl>
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<dl class="section return"><dt>Returns</dt><dd>none.</dd></dl>
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<p><b>Scaling and Overflow Behavior:</b> </p>
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<dl class="section user"><dt></dt><dd>The function implements 1.31 by 1.31 multiplications and finally output is converted into 2.30 format. Input down scaling is not required. </dd></dl>
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<p>References <a class="el" href="group__SQRT.html#ga119e25831e141d734d7ef10636670058">arm_sqrt_q31()</a>.</p>
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