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| <h1>arm_cfft_radix4_f32.c File Reference</h1> </div> |
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| <code>#include "<a class="el" href="arm__math_8h_source.html">arm_math.h</a>"</code><br/> |
| |
| <p><a href="arm__cfft__radix4__f32_8c_source.html">Go to the source code of this file.</a></p> |
| <table class="memberdecls"> |
| <tr><td colspan="2"><h2><a name="func-members"></a> |
| Functions</h2></td></tr> |
| <tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="group___c_f_f_t___c_i_f_f_t.html#ga521f670cd9c571bc61aff9bec89f4c26">arm_cfft_radix4_f32</a> (const <a class="el" href="structarm__cfft__radix4__instance__f32.html">arm_cfft_radix4_instance_f32</a> *S, <a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> *pSrc)</td></tr> |
| <tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="arm__cfft__radix4__f32_8c.html#ae239ddf995d1607115f9e84d5c069b9c">arm_radix4_butterfly_f32</a> (<a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> *pSrc, uint16_t fftLen, <a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> *pCoef, uint16_t twidCoefModifier)</td></tr> |
| <tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="arm__cfft__radix4__f32_8c.html#a2a78df6e4bbf080624f2b6349224ec93">arm_radix4_butterfly_inverse_f32</a> (<a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> *pSrc, uint16_t fftLen, <a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> *pCoef, uint16_t twidCoefModifier, <a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> onebyfftLen)</td></tr> |
| <tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="arm__cfft__radix4__f32_8c.html#a3d4062fdfa6aaa3f51f41cab868e508b">arm_bitreversal_f32</a> (<a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> *pSrc, uint16_t <a class="el" href="arm__fft__bin__example__f32_8c.html#a9b500899c581f6df3ffc0a9f3a9ef6aa">fftSize</a>, uint16_t bitRevFactor, uint16_t *pBitRevTab)</td></tr> |
| </table> |
| <hr/><h2>Function Documentation</h2> |
| <a class="anchor" id="ae239ddf995d1607115f9e84d5c069b9c"></a><!-- doxytag: member="arm_cfft_radix4_f32.c::arm_radix4_butterfly_f32" ref="ae239ddf995d1607115f9e84d5c069b9c" args="(float32_t *pSrc, uint16_t fftLen, float32_t *pCoef, uint16_t twidCoefModifier)" --> |
| <div class="memitem"> |
| <div class="memproto"> |
| <table class="memname"> |
| <tr> |
| <td class="memname">void arm_radix4_butterfly_f32 </td> |
| <td>(</td> |
| <td class="paramtype"><a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> * </td> |
| <td class="paramname"> <em>pSrc</em>, </td> |
| </tr> |
| <tr> |
| <td class="paramkey"></td> |
| <td></td> |
| <td class="paramtype">uint16_t </td> |
| <td class="paramname"> <em>fftLen</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> * </td> |
| <td class="paramname"> <em>pCoef</em>, </td> |
| </tr> |
| <tr> |
| <td class="paramkey"></td> |
| <td></td> |
| <td class="paramtype">uint16_t </td> |
| <td class="paramname"> <em>twidCoefModifier</em> </td> |
| </tr> |
| <tr> |
| <td></td> |
| <td>)</td> |
| <td></td><td></td> |
| </tr> |
| </table> |
| </div> |
| <div class="memdoc"> |
| |
| <p>Core function for the floating-point CFFT butterfly process. </p> |
| <p>end of CFFT_CIFFT group </p> |
| |
| <p>Definition at line <a class="el" href="arm__cfft__radix4__f32_8c_source.html#l00223">223</a> of file <a class="el" href="arm__cfft__radix4__f32_8c_source.html">arm_cfft_radix4_f32.c</a>.</p> |
| |
| </div> |
| </div> |
| <a class="anchor" id="a2a78df6e4bbf080624f2b6349224ec93"></a><!-- doxytag: member="arm_cfft_radix4_f32.c::arm_radix4_butterfly_inverse_f32" ref="a2a78df6e4bbf080624f2b6349224ec93" args="(float32_t *pSrc, uint16_t fftLen, float32_t *pCoef, uint16_t twidCoefModifier, float32_t onebyfftLen)" --> |
| <div class="memitem"> |
| <div class="memproto"> |
| <table class="memname"> |
| <tr> |
| <td class="memname">void arm_radix4_butterfly_inverse_f32 </td> |
| <td>(</td> |
| <td class="paramtype"><a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> * </td> |
| <td class="paramname"> <em>pSrc</em>, </td> |
| </tr> |
| <tr> |
| <td class="paramkey"></td> |
| <td></td> |
| <td class="paramtype">uint16_t </td> |
| <td class="paramname"> <em>fftLen</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> * </td> |
| <td class="paramname"> <em>pCoef</em>, </td> |
| </tr> |
| <tr> |
| <td class="paramkey"></td> |
| <td></td> |
| <td class="paramtype">uint16_t </td> |
| <td class="paramname"> <em>twidCoefModifier</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> </td> |
| <td class="paramname"> <em>onebyfftLen</em> </td> |
| </tr> |
| <tr> |
| <td></td> |
| <td>)</td> |
| <td></td><td></td> |
| </tr> |
| </table> |
| </div> |
| <div class="memdoc"> |
| |
| <p>Core function for the floating-point CIFFT butterfly process. </p> |
| <dl><dt><b>Parameters:</b></dt><dd> |
| <table class="params"> |
| <tr><td class="paramdir">[in,out]</td><td class="paramname">*pSrc</td><td>points to the in-place buffer of floating-point data type. </td></tr> |
| <tr><td class="paramdir">[in]</td><td class="paramname">fftLen</td><td>length of the FFT. </td></tr> |
| <tr><td class="paramdir">[in]</td><td class="paramname">*pCoef</td><td>points to twiddle coefficient buffer. </td></tr> |
| <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> |
| <tr><td class="paramdir">[in]</td><td class="paramname">onebyfftLen</td><td>value of 1/fftLen. </td></tr> |
| </table> |
| </dd> |
| </dl> |
| <dl class="return"><dt><b>Returns:</b></dt><dd>none. </dd></dl> |
| |
| <p>Definition at line <a class="el" href="arm__cfft__radix4__f32_8c_source.html#l00660">660</a> of file <a class="el" href="arm__cfft__radix4__f32_8c_source.html">arm_cfft_radix4_f32.c</a>.</p> |
| |
| </div> |
| </div> |
| <a class="anchor" id="a3d4062fdfa6aaa3f51f41cab868e508b"></a><!-- doxytag: member="arm_cfft_radix4_f32.c::arm_bitreversal_f32" ref="a3d4062fdfa6aaa3f51f41cab868e508b" args="(float32_t *pSrc, uint16_t fftSize, uint16_t bitRevFactor, uint16_t *pBitRevTab)" --> |
| <div class="memitem"> |
| <div class="memproto"> |
| <table class="memname"> |
| <tr> |
| <td class="memname">void arm_bitreversal_f32 </td> |
| <td>(</td> |
| <td class="paramtype"><a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> * </td> |
| <td class="paramname"> <em>pSrc</em>, </td> |
| </tr> |
| <tr> |
| <td class="paramkey"></td> |
| <td></td> |
| <td class="paramtype">uint16_t </td> |
| <td class="paramname"> <em>fftSize</em>, </td> |
| </tr> |
| <tr> |
| <td class="paramkey"></td> |
| <td></td> |
| <td class="paramtype">uint16_t </td> |
| <td class="paramname"> <em>bitRevFactor</em>, </td> |
| </tr> |
| <tr> |
| <td class="paramkey"></td> |
| <td></td> |
| <td class="paramtype">uint16_t * </td> |
| <td class="paramname"> <em>pBitRevTab</em> </td> |
| </tr> |
| <tr> |
| <td></td> |
| <td>)</td> |
| <td></td><td></td> |
| </tr> |
| </table> |
| </div> |
| <div class="memdoc"> |
| |
| <p>In-place bit reversal function. </p> |
| <dl><dt><b>Parameters:</b></dt><dd> |
| <table class="params"> |
| <tr><td class="paramdir">[in,out]</td><td class="paramname">*pSrc</td><td>points to the in-place buffer of floating-point data type. </td></tr> |
| <tr><td class="paramdir">[in]</td><td class="paramname">fftSize</td><td>length of the FFT. </td></tr> |
| <tr><td class="paramdir">[in]</td><td class="paramname">bitRevFactor</td><td>bit reversal modifier that supports different size FFTs with the same bit reversal table. </td></tr> |
| <tr><td class="paramdir">[in]</td><td class="paramname">*pBitRevTab</td><td>points to the bit reversal table. </td></tr> |
| </table> |
| </dd> |
| </dl> |
| <dl class="return"><dt><b>Returns:</b></dt><dd>none. </dd></dl> |
| |
| <p>Definition at line <a class="el" href="arm__cfft__radix4__f32_8c_source.html#l01177">1177</a> of file <a class="el" href="arm__cfft__radix4__f32_8c_source.html">arm_cfft_radix4_f32.c</a>.</p> |
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