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<a href="#func-members">Functions</a> </div>
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<div class="headertitle"><div class="title">Complex-by-Real Multiplication<div class="ingroups"><a class="el" href="group__groupCmplxMath.html">Complex Math Functions</a></div></div></div>
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</div><!--header-->
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<div class="contents">
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<table class="memberdecls">
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a id="func-members" name="func-members"></a>
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Functions</h2></td></tr>
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<tr class="memitem:ga5acdd76b2d888d8f5889cad56b6c0217"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__CmplxByRealMult.html#ga5acdd76b2d888d8f5889cad56b6c0217">arm_cmplx_mult_real_f16</a> (const float16_t *pSrcCmplx, const float16_t *pSrcReal, float16_t *pCmplxDst, uint32_t numSamples)</td></tr>
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<tr class="memdesc:ga5acdd76b2d888d8f5889cad56b6c0217"><td class="mdescLeft"> </td><td class="mdescRight">Floating-point complex-by-real multiplication. <a href="group__CmplxByRealMult.html#ga5acdd76b2d888d8f5889cad56b6c0217">More...</a><br /></td></tr>
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<tr class="separator:ga5acdd76b2d888d8f5889cad56b6c0217"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ga903eb30a02343574e46cb123b52232f4"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__CmplxByRealMult.html#ga903eb30a02343574e46cb123b52232f4">arm_cmplx_mult_real_f32</a> (const <a class="el" href="arm__math__types_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> *pSrcCmplx, const <a class="el" href="arm__math__types_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> *pSrcReal, <a class="el" href="arm__math__types_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> *pCmplxDst, uint32_t numSamples)</td></tr>
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<tr class="memdesc:ga903eb30a02343574e46cb123b52232f4"><td class="mdescLeft"> </td><td class="mdescRight">Floating-point complex-by-real multiplication. <a href="group__CmplxByRealMult.html#ga903eb30a02343574e46cb123b52232f4">More...</a><br /></td></tr>
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<tr class="separator:ga903eb30a02343574e46cb123b52232f4"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:gaa41d60a567652bf6a783b916931bf20b"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__CmplxByRealMult.html#gaa41d60a567652bf6a783b916931bf20b">arm_cmplx_mult_real_q15</a> (const <a class="el" href="arm__math__types_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> *pSrcCmplx, const <a class="el" href="arm__math__types_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> *pSrcReal, <a class="el" href="arm__math__types_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> *pCmplxDst, uint32_t numSamples)</td></tr>
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<tr class="memdesc:gaa41d60a567652bf6a783b916931bf20b"><td class="mdescLeft"> </td><td class="mdescRight">Q15 complex-by-real multiplication. <a href="group__CmplxByRealMult.html#gaa41d60a567652bf6a783b916931bf20b">More...</a><br /></td></tr>
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<tr class="separator:gaa41d60a567652bf6a783b916931bf20b"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ga0fe1cd71d35b4481f8ab69d502c96ace"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__CmplxByRealMult.html#ga0fe1cd71d35b4481f8ab69d502c96ace">arm_cmplx_mult_real_q31</a> (const <a class="el" href="arm__math__types_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> *pSrcCmplx, const <a class="el" href="arm__math__types_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> *pSrcReal, <a class="el" href="arm__math__types_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> *pCmplxDst, uint32_t numSamples)</td></tr>
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<tr class="memdesc:ga0fe1cd71d35b4481f8ab69d502c96ace"><td class="mdescLeft"> </td><td class="mdescRight">Q31 complex-by-real multiplication. <a href="group__CmplxByRealMult.html#ga0fe1cd71d35b4481f8ab69d502c96ace">More...</a><br /></td></tr>
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<tr class="separator:ga0fe1cd71d35b4481f8ab69d502c96ace"><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 >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>
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<p >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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pCmplxDst[(2*n)+0] = pSrcCmplx[(2*n)+0] * pSrcReal[n];
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pCmplxDst[(2*n)+1] = pSrcCmplx[(2*n)+1] * pSrcReal[n];
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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 id="ga5acdd76b2d888d8f5889cad56b6c0217" name="ga5acdd76b2d888d8f5889cad56b6c0217"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#ga5acdd76b2d888d8f5889cad56b6c0217">◆ </a></span>arm_cmplx_mult_real_f16()</h2>
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<div class="memitem">
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<td class="memname">void arm_cmplx_mult_real_f16 </td>
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<td>(</td>
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<td class="paramtype">const float16_t * </td>
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<td class="paramname"><em>pSrcCmplx</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">const float16_t * </td>
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<td class="paramname"><em>pSrcReal</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">float16_t * </td>
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<td class="paramname"><em>pCmplxDst</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">pSrcCmplx</td><td>points to complex input vector </td></tr>
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<tr><td class="paramdir">[in]</td><td class="paramname">pSrcReal</td><td>points to real input vector </td></tr>
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<tr><td class="paramdir">[out]</td><td class="paramname">pCmplxDst</td><td>points to complex output vector </td></tr>
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<tr><td class="paramdir">[in]</td><td class="paramname">numSamples</td><td>number of samples in each 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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</div>
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</div>
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<a id="ga903eb30a02343574e46cb123b52232f4" name="ga903eb30a02343574e46cb123b52232f4"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#ga903eb30a02343574e46cb123b52232f4">◆ </a></span>arm_cmplx_mult_real_f32()</h2>
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<div class="memitem">
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<div class="memproto">
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<table class="memname">
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<tr>
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<td class="memname">void arm_cmplx_mult_real_f32 </td>
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<td>(</td>
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<td class="paramtype">const <a class="el" href="arm__math__types_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> * </td>
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<td class="paramname"><em>pSrcCmplx</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">const <a class="el" href="arm__math__types_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> * </td>
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<td class="paramname"><em>pSrcReal</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__types_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> * </td>
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<td class="paramname"><em>pCmplxDst</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">pSrcCmplx</td><td>points to complex input vector </td></tr>
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<tr><td class="paramdir">[in]</td><td class="paramname">pSrcReal</td><td>points to real input vector </td></tr>
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<tr><td class="paramdir">[out]</td><td class="paramname">pCmplxDst</td><td>points to complex output vector </td></tr>
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<tr><td class="paramdir">[in]</td><td class="paramname">numSamples</td><td>number of samples in each 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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</div>
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</div>
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<a id="gaa41d60a567652bf6a783b916931bf20b" name="gaa41d60a567652bf6a783b916931bf20b"></a>
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<h2 class="memtitle"><span class="permalink"><a href="#gaa41d60a567652bf6a783b916931bf20b">◆ </a></span>arm_cmplx_mult_real_q15()</h2>
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<div class="memitem">
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<tr>
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<td class="memname">void arm_cmplx_mult_real_q15 </td>
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<td>(</td>
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<td class="paramtype">const <a class="el" href="arm__math__types_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> * </td>
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<td class="paramname"><em>pSrcCmplx</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">const <a class="el" href="arm__math__types_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> * </td>
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<td class="paramname"><em>pSrcReal</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__types_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> * </td>
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<td class="paramname"><em>pCmplxDst</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">pSrcCmplx</td><td>points to complex input vector </td></tr>
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<tr><td class="paramdir">[in]</td><td class="paramname">pSrcReal</td><td>points to real input vector </td></tr>
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<tr><td class="paramdir">[out]</td><td class="paramname">pCmplxDst</td><td>points to complex output vector </td></tr>
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<tr><td class="paramdir">[in]</td><td class="paramname">numSamples</td><td>number of samples in each 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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<dl class="section user"><dt>Scaling and Overflow Behavior</dt><dd>The function uses saturating arithmetic. Results outside of the allowable Q15 range [0x8000 0x7FFF] are saturated. </dd></dl>
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</div>
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</div>
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<h2 class="memtitle"><span class="permalink"><a href="#ga0fe1cd71d35b4481f8ab69d502c96ace">◆ </a></span>arm_cmplx_mult_real_q31()</h2>
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<td class="memname">void arm_cmplx_mult_real_q31 </td>
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<td>(</td>
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<td class="paramtype">const <a class="el" href="arm__math__types_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> * </td>
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<td class="paramname"><em>pSrcCmplx</em>, </td>
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<td class="paramkey"></td>
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<td></td>
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<td class="paramtype">const <a class="el" href="arm__math__types_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> * </td>
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<td class="paramname"><em>pSrcReal</em>, </td>
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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__types_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> * </td>
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<td class="paramname"><em>pCmplxDst</em>, </td>
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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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<td></td>
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<td>)</td>
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<td></td><td></td>
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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">pSrcCmplx</td><td>points to complex input vector </td></tr>
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<tr><td class="paramdir">[in]</td><td class="paramname">pSrcReal</td><td>points to real input vector </td></tr>
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<tr><td class="paramdir">[out]</td><td class="paramname">pCmplxDst</td><td>points to complex output vector </td></tr>
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<tr><td class="paramdir">[in]</td><td class="paramname">numSamples</td><td>number of samples in each 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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<dl class="section user"><dt>Scaling and Overflow Behavior</dt><dd>The function uses saturating arithmetic. Results outside of the allowable Q31 range[0x80000000 0x7FFFFFFF] are saturated. </dd></dl>
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