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  51 <a href="#func-members">Functions</a>  </div>
  52   <div class="headertitle">
  53 <h1>arm_cfft_radix4_f32.c File Reference</h1>  </div>
  54 </div>
  55 <div class="contents">
  56 <code>#include &quot;<a class="el" href="arm__math_8h_source.html">arm_math.h</a>&quot;</code><br/>
  57
  58 <p><a href="arm__cfft__radix4__f32_8c_source.html">Go to the source code of this file.</a></p>
  59 <table class="memberdecls">
  60 <tr><td colspan="2"><h2><a name="func-members"></a>
  61 Functions</h2></td></tr>
  62 <tr><td class="memItemLeft" align="right" valign="top">void&#160;</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>
  63 <tr><td class="memItemLeft" align="right" valign="top">void&#160;</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>
  64 <tr><td class="memItemLeft" align="right" valign="top">void&#160;</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>
  65 <tr><td class="memItemLeft" align="right" valign="top">void&#160;</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>
  66 </table>
  67 <hr/><h2>Function Documentation</h2>
  68 <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)" -->
  69 <div class="memitem">
  70 <div class="memproto">
  71       <table class="memname">
  72         <tr>
  73           <td class="memname">void arm_radix4_butterfly_f32 </td>
  74           <td>(</td>
  75           <td class="paramtype"><a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> *&#160;</td>
  76           <td class="paramname"> <em>pSrc</em>, </td>
  77         </tr>
  78         <tr>
  79           <td class="paramkey"></td>
  80           <td></td>
  81           <td class="paramtype">uint16_t&#160;</td>
  82           <td class="paramname"> <em>fftLen</em>, </td>
  83         </tr>
  84         <tr>
  85           <td class="paramkey"></td>
  86           <td></td>
  87           <td class="paramtype"><a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> *&#160;</td>
  88           <td class="paramname"> <em>pCoef</em>, </td>
  89         </tr>
  90         <tr>
  91           <td class="paramkey"></td>
  92           <td></td>
  93           <td class="paramtype">uint16_t&#160;</td>
  94           <td class="paramname"> <em>twidCoefModifier</em>&#160;</td>
  95         </tr>
  96         <tr>
  97           <td></td>
  98           <td>)</td>
  99           <td></td><td></td>
 100         </tr>
 101       </table>
 102 </div>
 103 <div class="memdoc">
 104
 105 <p>Core function for the floating-point CFFT butterfly process. </p>
 106 <p>end of CFFT_CIFFT group </p>
 107
 108 <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>
 109
 110 </div>
 111 </div>
 112 <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)" -->
 113 <div class="memitem">
 114 <div class="memproto">
 115       <table class="memname">
 116         <tr>
 117           <td class="memname">void arm_radix4_butterfly_inverse_f32 </td>
 118           <td>(</td>
 119           <td class="paramtype"><a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> *&#160;</td>
 120           <td class="paramname"> <em>pSrc</em>, </td>
 121         </tr>
 122         <tr>
 123           <td class="paramkey"></td>
 124           <td></td>
 125           <td class="paramtype">uint16_t&#160;</td>
 126           <td class="paramname"> <em>fftLen</em>, </td>
 127         </tr>
 128         <tr>
 129           <td class="paramkey"></td>
 130           <td></td>
 131           <td class="paramtype"><a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> *&#160;</td>
 132           <td class="paramname"> <em>pCoef</em>, </td>
 133         </tr>
 134         <tr>
 135           <td class="paramkey"></td>
 136           <td></td>
 137           <td class="paramtype">uint16_t&#160;</td>
 138           <td class="paramname"> <em>twidCoefModifier</em>, </td>
 139         </tr>
 140         <tr>
 141           <td class="paramkey"></td>
 142           <td></td>
 143           <td class="paramtype"><a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a>&#160;</td>
 144           <td class="paramname"> <em>onebyfftLen</em>&#160;</td>
 145         </tr>
 146         <tr>
 147           <td></td>
 148           <td>)</td>
 149           <td></td><td></td>
 150         </tr>
 151       </table>
 152 </div>
 153 <div class="memdoc">
 154
 155 <p>Core function for the floating-point CIFFT butterfly process. </p>
 156 <dl><dt><b>Parameters:</b></dt><dd>
 157   <table class="params">
 158     <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>
 159     <tr><td class="paramdir">[in]</td><td class="paramname">fftLen</td><td>length of the FFT. </td></tr>
 160     <tr><td class="paramdir">[in]</td><td class="paramname">*pCoef</td><td>points to twiddle coefficient buffer. </td></tr>
 161     <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>
 162     <tr><td class="paramdir">[in]</td><td class="paramname">onebyfftLen</td><td>value of 1/fftLen. </td></tr>
 163   </table>
 164   </dd>
 165 </dl>
 166 <dl class="return"><dt><b>Returns:</b></dt><dd>none. </dd></dl>
 167
 168 <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>
 169
 170 </div>
 171 </div>
 172 <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)" -->
 173 <div class="memitem">
 174 <div class="memproto">
 175       <table class="memname">
 176         <tr>
 177           <td class="memname">void arm_bitreversal_f32 </td>
 178           <td>(</td>
 179           <td class="paramtype"><a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> *&#160;</td>
 180           <td class="paramname"> <em>pSrc</em>, </td>
 181         </tr>
 182         <tr>
 183           <td class="paramkey"></td>
 184           <td></td>
 185           <td class="paramtype">uint16_t&#160;</td>
 186           <td class="paramname"> <em>fftSize</em>, </td>
 187         </tr>
 188         <tr>
 189           <td class="paramkey"></td>
 190           <td></td>
 191           <td class="paramtype">uint16_t&#160;</td>
 192           <td class="paramname"> <em>bitRevFactor</em>, </td>
 193         </tr>
 194         <tr>
 195           <td class="paramkey"></td>
 196           <td></td>
 197           <td class="paramtype">uint16_t *&#160;</td>
 198           <td class="paramname"> <em>pBitRevTab</em>&#160;</td>
 199         </tr>
 200         <tr>
 201           <td></td>
 202           <td>)</td>
 203           <td></td><td></td>
 204         </tr>
 205       </table>
 206 </div>
 207 <div class="memdoc">
 208
 209 <p>In-place bit reversal function. </p>
 210 <dl><dt><b>Parameters:</b></dt><dd>
 211   <table class="params">
 212     <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>
 213     <tr><td class="paramdir">[in]</td><td class="paramname">fftSize</td><td>length of the FFT. </td></tr>
 214     <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>
 215     <tr><td class="paramdir">[in]</td><td class="paramname">*pBitRevTab</td><td>points to the bit reversal table. </td></tr>
 216   </table>
 217   </dd>
 218 </dl>
 219 <dl class="return"><dt><b>Returns:</b></dt><dd>none. </dd></dl>
 220
 221 <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>
 222
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