292 lines
18 KiB
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292 lines
18 KiB
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<a href="#func-members">Functions</a> </div>
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<div class="title">arm_cfft_radix4_q15.c File Reference</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 name="func-members"></a>
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Functions</h2></td></tr>
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<tr class="memitem:a2d01d2045f280c32036da97d33c52440"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="arm__cfft__radix4__q15_8c.html#a2d01d2045f280c32036da97d33c52440">arm_radix4_butterfly_q15</a> (<a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> *pSrc16, uint32_t fftLen, <a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> *pCoef16, uint32_t twidCoefModifier)</td></tr>
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<tr class="memdesc:a2d01d2045f280c32036da97d33c52440"><td class="mdescLeft"> </td><td class="mdescRight">Core function for the Q15 CFFT butterfly process. <a href="#a2d01d2045f280c32036da97d33c52440">More...</a><br/></td></tr>
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<tr class="separator:a2d01d2045f280c32036da97d33c52440"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:aad04e8439d17dab5617bf1be268bb391"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="arm__cfft__radix4__q15_8c.html#aad04e8439d17dab5617bf1be268bb391">arm_radix4_butterfly_inverse_q15</a> (<a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> *pSrc16, uint32_t fftLen, <a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> *pCoef16, uint32_t twidCoefModifier)</td></tr>
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<tr class="memdesc:aad04e8439d17dab5617bf1be268bb391"><td class="mdescLeft"> </td><td class="mdescRight">Core function for the Q15 CIFFT butterfly process. <a href="#aad04e8439d17dab5617bf1be268bb391">More...</a><br/></td></tr>
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<tr class="separator:aad04e8439d17dab5617bf1be268bb391"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:a73f48eaea9297605705ae25d3405343e"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="arm__cfft__radix4__q15_8c.html#a73f48eaea9297605705ae25d3405343e">arm_bitreversal_q15</a> (<a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> *pSrc, uint32_t fftLen, uint16_t bitRevFactor, uint16_t *pBitRevTab)</td></tr>
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<tr class="separator:a73f48eaea9297605705ae25d3405343e"><td class="memSeparator" colspan="2"> </td></tr>
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<tr class="memitem:ga8d66cdac41b8bf6cefdb895456eee84a"><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group__ComplexFFT.html#ga8d66cdac41b8bf6cefdb895456eee84a">arm_cfft_radix4_q15</a> (const <a class="el" href="structarm__cfft__radix4__instance__q15.html">arm_cfft_radix4_instance_q15</a> *S, <a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> *pSrc)</td></tr>
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<tr class="memdesc:ga8d66cdac41b8bf6cefdb895456eee84a"><td class="mdescLeft"> </td><td class="mdescRight">Processing function for the Q15 CFFT/CIFFT. <a href="group__ComplexFFT.html#ga8d66cdac41b8bf6cefdb895456eee84a">More...</a><br/></td></tr>
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<tr class="separator:ga8d66cdac41b8bf6cefdb895456eee84a"><td class="memSeparator" colspan="2"> </td></tr>
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</table>
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<h2 class="groupheader">Function Documentation</h2>
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<a class="anchor" id="a73f48eaea9297605705ae25d3405343e"></a>
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<td class="memname">void arm_bitreversal_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">uint32_t </td>
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<td class="paramname"><em>fftLen</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">uint16_t </td>
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<td class="paramname"><em>bitRevFactor</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">uint16_t * </td>
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<td class="paramname"><em>pBitRevTab</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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<p>Referenced by <a class="el" href="group__ComplexFFT.html#ga8d66cdac41b8bf6cefdb895456eee84a">arm_cfft_radix4_q15()</a>.</p>
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</div>
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</div>
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<a class="anchor" id="aad04e8439d17dab5617bf1be268bb391"></a>
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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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<td class="memname">void arm_radix4_butterfly_inverse_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>pSrc16</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>fftLen</em>, </td>
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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>pCoef16</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>twidCoefModifier</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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</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,out]</td><td class="paramname">*pSrc16</td><td>points to the in-place buffer of Q15 data type. </td></tr>
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<tr><td class="paramdir">[in]</td><td class="paramname">fftLen</td><td>length of the FFT. </td></tr>
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<tr><td class="paramdir">[in]</td><td class="paramname">*pCoef16</td><td>points to twiddle coefficient buffer. </td></tr>
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<tr><td class="paramdir">[in]</td><td class="paramname">twidCoefModifier</td><td>twiddle coefficient modifier that supports different size FFTs with the same twiddle factor table. </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="arm__math_8h.html#a08bea9cb2c311d925224c0d6829edb8c">__QADD16()</a>, <a class="el" href="arm__math_8h.html#aad6f7afa72d784b95e6357c215a919bb">__QASX()</a>, <a class="el" href="arm__math_8h.html#a391f5f1d2e7cefaccfece0a49141ad47">__QSAX()</a>, <a class="el" href="arm__math_8h.html#a6e4703dc08d1b82eab7f5ef96edb59bb">__QSUB16()</a>, <a class="el" href="arm__math_8h.html#af3d7aff37a4472f1f2bc88eb3b97b526">__SHADD16()</a>, <a class="el" href="arm__math_8h.html#af60f220d422ebc524411f712544feecf">__SHASX()</a>, <a class="el" href="arm__math_8h.html#abbfbf3cfac1971b4b380c0cde120a85b">__SHSAX()</a>, <a class="el" href="arm__math_8h.html#a0987d147320a596bbdb537d70b23de73">__SHSUB16()</a>, <a class="el" href="arm__math_8h.html#a9de2e0a5785be82866bcb96012282248">__SIMD32</a>, <a class="el" href="arm__math_8h.html#a9c58d7b4648a973d91e27544bc190e60">__SMUADX()</a>, <a class="el" href="arm__math_8h.html#a6b293f62ad7eb225fa9ce0f39458eba3">__SMUSD()</a>, and <a class="el" href="arm__math_8h.html#af0d54ec57b936994a34f073d0049ea3f">_SIMD32_OFFSET</a>.</p>
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<p>Referenced by <a class="el" href="group__ComplexFFT.html#ga68cdacd2267a2967955e40e6b7ec1229">arm_cfft_q15()</a>, <a class="el" href="group__ComplexFFT.html#ga8d66cdac41b8bf6cefdb895456eee84a">arm_cfft_radix4_q15()</a>, and <a class="el" href="arm__cfft__q15_8c.html#abe669acc8db57d1fb9b1e2bba30f2224">arm_cfft_radix4by2_inverse_q15()</a>.</p>
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</div>
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</div>
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<a class="anchor" id="a2d01d2045f280c32036da97d33c52440"></a>
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<div class="memitem">
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<td class="memname">void arm_radix4_butterfly_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>pSrc16</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>fftLen</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>pCoef16</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>twidCoefModifier</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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</div><div class="memdoc">
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<p>end of ComplexFFT group </p>
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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,out]</td><td class="paramname">*pSrc16</td><td>points to the in-place buffer of Q15 data type. </td></tr>
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<tr><td class="paramdir">[in]</td><td class="paramname">fftLen</td><td>length of the FFT. </td></tr>
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<tr><td class="paramdir">[in]</td><td class="paramname">*pCoef16</td><td>points to twiddle coefficient buffer. </td></tr>
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<tr><td class="paramdir">[in]</td><td class="paramname">twidCoefModifier</td><td>twiddle coefficient modifier that supports different size FFTs with the same twiddle factor table. </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="arm__math_8h.html#a08bea9cb2c311d925224c0d6829edb8c">__QADD16()</a>, <a class="el" href="arm__math_8h.html#aad6f7afa72d784b95e6357c215a919bb">__QASX()</a>, <a class="el" href="arm__math_8h.html#a391f5f1d2e7cefaccfece0a49141ad47">__QSAX()</a>, <a class="el" href="arm__math_8h.html#a6e4703dc08d1b82eab7f5ef96edb59bb">__QSUB16()</a>, <a class="el" href="arm__math_8h.html#af3d7aff37a4472f1f2bc88eb3b97b526">__SHADD16()</a>, <a class="el" href="arm__math_8h.html#af60f220d422ebc524411f712544feecf">__SHASX()</a>, <a class="el" href="arm__math_8h.html#abbfbf3cfac1971b4b380c0cde120a85b">__SHSAX()</a>, <a class="el" href="arm__math_8h.html#a0987d147320a596bbdb537d70b23de73">__SHSUB16()</a>, <a class="el" href="arm__math_8h.html#a9de2e0a5785be82866bcb96012282248">__SIMD32</a>, <a class="el" href="arm__math_8h.html#a2eed05660fedbe3fbd0b6dbb1315cfc3">__SMUAD()</a>, <a class="el" href="arm__math_8h.html#a7375d1deba32929dc97008bfa7085d46">__SMUSDX()</a>, and <a class="el" href="arm__math_8h.html#af0d54ec57b936994a34f073d0049ea3f">_SIMD32_OFFSET</a>.</p>
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<p>Referenced by <a class="el" href="group__ComplexFFT.html#ga68cdacd2267a2967955e40e6b7ec1229">arm_cfft_q15()</a>, <a class="el" href="group__ComplexFFT.html#ga8d66cdac41b8bf6cefdb895456eee84a">arm_cfft_radix4_q15()</a>, and <a class="el" href="arm__cfft__q15_8c.html#af1d4a751153857c173511e0c77ab4fa9">arm_cfft_radix4by2_q15()</a>.</p>
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