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  117. <tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="func-members"></a>
    118. 

  118. Functions</h2></td></tr>
    119. 

  119. <tr class="memitem:ac00819467b00656801a5f6a9a5e6d824"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="arm__rfft__f32_8c.html#ac00819467b00656801a5f6a9a5e6d824">arm_radix4_butterfly_f32</a> (<a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> *pSrc, uint16_t fftLen, const <a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> *pCoef, uint16_t twidCoefModifier)</td></tr>
    120. 

  120. <tr class="separator:ac00819467b00656801a5f6a9a5e6d824"><td class="memSeparator" colspan="2">&#160;</td></tr>
    121. 

  121. <tr class="memitem:ab3c001e14852633e343079f97cd96f44"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="arm__rfft__f32_8c.html#ab3c001e14852633e343079f97cd96f44">arm_radix4_butterfly_inverse_f32</a> (<a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> *pSrc, uint16_t fftLen, const <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>
    122. 

  122. <tr class="separator:ab3c001e14852633e343079f97cd96f44"><td class="memSeparator" colspan="2">&#160;</td></tr>
    123. 

  123. <tr class="memitem:a81008b023cbc9d37b3ff849877d1eb52"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="arm__rfft__f32_8c.html#a81008b023cbc9d37b3ff849877d1eb52">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, const uint16_t *pBitRevTab)</td></tr>
    124. 

  124. <tr class="memdesc:a81008b023cbc9d37b3ff849877d1eb52"><td class="mdescLeft">&#160;</td><td class="mdescRight">In-place floating-point bit reversal function.  <a href="#a81008b023cbc9d37b3ff849877d1eb52">More...</a><br/></td></tr>
    125. 

  125. <tr class="separator:a81008b023cbc9d37b3ff849877d1eb52"><td class="memSeparator" colspan="2">&#160;</td></tr>
    126. 

  126. <tr class="memitem:afe1ca79cba2ffb718de94d57af948c9c"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="arm__rfft__f32_8c.html#afe1ca79cba2ffb718de94d57af948c9c">arm_split_rfft_f32</a> (<a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> *pSrc, uint32_t fftLen, const <a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> *pATable, const <a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> *pBTable, <a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> *pDst, uint32_t modifier)</td></tr>
    127. 

  127. <tr class="memdesc:afe1ca79cba2ffb718de94d57af948c9c"><td class="mdescLeft">&#160;</td><td class="mdescRight">Core Real FFT process.  <a href="#afe1ca79cba2ffb718de94d57af948c9c">More...</a><br/></td></tr>
    128. 

  128. <tr class="separator:afe1ca79cba2ffb718de94d57af948c9c"><td class="memSeparator" colspan="2">&#160;</td></tr>
    129. 

  129. <tr class="memitem:a522656f688f96b46d74ecced3d641ba7"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="arm__rfft__f32_8c.html#a522656f688f96b46d74ecced3d641ba7">arm_split_rifft_f32</a> (<a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> *pSrc, uint32_t fftLen, const <a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> *pATable, const <a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> *pBTable, <a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> *pDst, uint32_t modifier)</td></tr>
    130. 

  130. <tr class="memdesc:a522656f688f96b46d74ecced3d641ba7"><td class="mdescLeft">&#160;</td><td class="mdescRight">Core Real IFFT process.  <a href="#a522656f688f96b46d74ecced3d641ba7">More...</a><br/></td></tr>
    131. 

  131. <tr class="separator:a522656f688f96b46d74ecced3d641ba7"><td class="memSeparator" colspan="2">&#160;</td></tr>
    132. 

  132. <tr class="memitem:ga3df1766d230532bc068fc4ed69d0fcdc"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group__RealFFT.html#ga3df1766d230532bc068fc4ed69d0fcdc">arm_rfft_f32</a> (const <a class="el" href="structarm__rfft__instance__f32.html">arm_rfft_instance_f32</a> *<a class="el" href="arm__bayes__example__f32_8c.html#ad5af783c9e1eb1514dec0a59dac35eb7">S</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)</td></tr>
    133. 

  133. <tr class="memdesc:ga3df1766d230532bc068fc4ed69d0fcdc"><td class="mdescLeft">&#160;</td><td class="mdescRight">Processing function for the floating-point RFFT/RIFFT. Source buffer is modified by this function.  <a href="group__RealFFT.html#ga3df1766d230532bc068fc4ed69d0fcdc">More...</a><br/></td></tr>
    134. 

  134. <tr class="separator:ga3df1766d230532bc068fc4ed69d0fcdc"><td class="memSeparator" colspan="2">&#160;</td></tr>
    135. 

  135. </table>
    136. 

  136. <h2 class="groupheader">Function Documentation</h2>
    137. 

  137. <a class="anchor" id="a81008b023cbc9d37b3ff849877d1eb52"></a>
    138. 

  138. <div class="memitem">
    139. 

  139. <div class="memproto">
    140. 

  140.       <table class="memname">
    141. 

  141.         <tr>
    142. 

  142.           <td class="memname">void arm_bitreversal_f32 </td>
    143. 

  143.           <td>(</td>
    144. 

  144.           <td class="paramtype"><a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> *&#160;</td>
    145. 

  145.           <td class="paramname"><em>pSrc</em>, </td>
    146. 

  146.         </tr>
    147. 

  147.         <tr>
    148. 

  148.           <td class="paramkey"></td>
    149. 

  149.           <td></td>
    150. 

  150.           <td class="paramtype">uint16_t&#160;</td>
    151. 

  151.           <td class="paramname"><em>fftSize</em>, </td>
    152. 

  152.         </tr>
    153. 

  153.         <tr>
    154. 

  154.           <td class="paramkey"></td>
    155. 

  155.           <td></td>
    156. 

  156.           <td class="paramtype">uint16_t&#160;</td>
    157. 

  157.           <td class="paramname"><em>bitRevFactor</em>, </td>
    158. 

  158.         </tr>
    159. 

  159.         <tr>
    160. 

  160.           <td class="paramkey"></td>
    161. 

  161.           <td></td>
    162. 

  162.           <td class="paramtype">const uint16_t *&#160;</td>
    163. 

  163.           <td class="paramname"><em>pBitRevTab</em>&#160;</td>
    164. 

  164.         </tr>
    165. 

  165.         <tr>
    166. 

  166.           <td></td>
    167. 

  167.           <td>)</td>
    168. 

  168.           <td></td><td></td>
    169. 

  169.         </tr>
    170. 

  170.       </table>
    171. 

  171. </div><div class="memdoc">
    172. 

  172. <dl class="params"><dt>Parameters</dt><dd>
    173. 

  173.   <table class="params">
    174. 

  174.     <tr><td class="paramdir">[in,out]</td><td class="paramname">pSrc</td><td>points to in-place floating-point data buffer </td></tr>
    175. 

  175.     <tr><td class="paramdir">[in]</td><td class="paramname">fftSize</td><td>length of FFT </td></tr>
    176. 

  176.     <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>
    177. 

  177.     <tr><td class="paramdir">[in]</td><td class="paramname">pBitRevTab</td><td>points to bit reversal table </td></tr>
    178. 

  178.   </table>
    179. 

  179.   </dd>
    180. 

  180. </dl>
    181. 

  181. <dl class="section return"><dt>Returns</dt><dd>none </dd></dl>
    182. 

  182. 

  183. </div>
    184. 

  184. </div>
    185. 

  185. <a class="anchor" id="ac00819467b00656801a5f6a9a5e6d824"></a>
    186. 

  186. <div class="memitem">
    187. 

  187. <div class="memproto">
    188. 

  188.       <table class="memname">
    189. 

  189.         <tr>
    190. 

  190.           <td class="memname">void arm_radix4_butterfly_f32 </td>
    191. 

  191.           <td>(</td>
    192. 

  192.           <td class="paramtype"><a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> *&#160;</td>
    193. 

  193.           <td class="paramname"><em>pSrc</em>, </td>
    194. 

  194.         </tr>
    195. 

  195.         <tr>
    196. 

  196.           <td class="paramkey"></td>
    197. 

  197.           <td></td>
    198. 

  198.           <td class="paramtype">uint16_t&#160;</td>
    199. 

  199.           <td class="paramname"><em>fftLen</em>, </td>
    200. 

  200.         </tr>
    201. 

  201.         <tr>
    202. 

  202.           <td class="paramkey"></td>
    203. 

  203.           <td></td>
    204. 

  204.           <td class="paramtype">const <a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> *&#160;</td>
    205. 

  205.           <td class="paramname"><em>pCoef</em>, </td>
    206. 

  206.         </tr>
    207. 

  207.         <tr>
    208. 

  208.           <td class="paramkey"></td>
    209. 

  209.           <td></td>
    210. 

  210.           <td class="paramtype">uint16_t&#160;</td>
    211. 

  211.           <td class="paramname"><em>twidCoefModifier</em>&#160;</td>
    212. 

  212.         </tr>
    213. 

  213.         <tr>
    214. 

  214.           <td></td>
    215. 

  215.           <td>)</td>
    216. 

  216.           <td></td><td></td>
    217. 

  217.         </tr>
    218. 

  218.       </table>
    219. 

  219. </div><div class="memdoc">
    220. 

  220. <p>end of ComplexFFT group brief Core function for the floating-point CFFT butterfly process. param[in,out] pSrc points to the in-place buffer of floating-point data type param[in] fftLen length of the FFT param[in] pCoef points to the twiddle coefficient buffer param[in] twidCoefModifier twiddle coefficient modifier that supports different size FFTs with the same twiddle factor table return none </p>
    221. 

  221. 

  222. </div>
    223. 

  223. </div>
    224. 

  224. <a class="anchor" id="ab3c001e14852633e343079f97cd96f44"></a>
    225. 

  225. <div class="memitem">
    226. 

  226. <div class="memproto">
    227. 

  227.       <table class="memname">
    228. 

  228.         <tr>
    229. 

  229.           <td class="memname">void arm_radix4_butterfly_inverse_f32 </td>
    230. 

  230.           <td>(</td>
    231. 

  231.           <td class="paramtype"><a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> *&#160;</td>
    232. 

  232.           <td class="paramname"><em>pSrc</em>, </td>
    233. 

  233.         </tr>
    234. 

  234.         <tr>
    235. 

  235.           <td class="paramkey"></td>
    236. 

  236.           <td></td>
    237. 

  237.           <td class="paramtype">uint16_t&#160;</td>
    238. 

  238.           <td class="paramname"><em>fftLen</em>, </td>
    239. 

  239.         </tr>
    240. 

  240.         <tr>
    241. 

  241.           <td class="paramkey"></td>
    242. 

  242.           <td></td>
    243. 

  243.           <td class="paramtype">const <a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> *&#160;</td>
    244. 

  244.           <td class="paramname"><em>pCoef</em>, </td>
    245. 

  245.         </tr>
    246. 

  246.         <tr>
    247. 

  247.           <td class="paramkey"></td>
    248. 

  248.           <td></td>
    249. 

  249.           <td class="paramtype">uint16_t&#160;</td>
    250. 

  250.           <td class="paramname"><em>twidCoefModifier</em>, </td>
    251. 

  251.         </tr>
    252. 

  252.         <tr>
    253. 

  253.           <td class="paramkey"></td>
    254. 

  254.           <td></td>
    255. 

  255.           <td class="paramtype"><a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a>&#160;</td>
    256. 

  256.           <td class="paramname"><em>onebyfftLen</em>&#160;</td>
    257. 

  257.         </tr>
    258. 

  258.         <tr>
    259. 

  259.           <td></td>
    260. 

  260.           <td>)</td>
    261. 

  261.           <td></td><td></td>
    262. 

  262.         </tr>
    263. 

  263.       </table>
    264. 

  264. </div><div class="memdoc">
    265. 

  265. <p>brief Core function for the floating-point CIFFT butterfly process. param[in,out] pSrc points to the in-place buffer of floating-point data type param[in] fftLen length of the FFT param[in] pCoef points to twiddle coefficient buffer param[in] twidCoefModifier twiddle coefficient modifier that supports different size FFTs with the same twiddle factor table. param[in] onebyfftLen value of 1/fftLen return none </p>
    266. 

  266. 

  267. </div>
    268. 

  268. </div>
    269. 

  269. <a class="anchor" id="afe1ca79cba2ffb718de94d57af948c9c"></a>
    270. 

  270. <div class="memitem">
    271. 

  271. <div class="memproto">
    272. 

  272.       <table class="memname">
    273. 

  273.         <tr>
    274. 

  274.           <td class="memname">void arm_split_rfft_f32 </td>
    275. 

  275.           <td>(</td>
    276. 

  276.           <td class="paramtype"><a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> *&#160;</td>
    277. 

  277.           <td class="paramname"><em>pSrc</em>, </td>
    278. 

  278.         </tr>
    279. 

  279.         <tr>
    280. 

  280.           <td class="paramkey"></td>
    281. 

  281.           <td></td>
    282. 

  282.           <td class="paramtype">uint32_t&#160;</td>
    283. 

  283.           <td class="paramname"><em>fftLen</em>, </td>
    284. 

  284.         </tr>
    285. 

  285.         <tr>
    286. 

  286.           <td class="paramkey"></td>
    287. 

  287.           <td></td>
    288. 

  288.           <td class="paramtype">const <a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> *&#160;</td>
    289. 

  289.           <td class="paramname"><em>pATable</em>, </td>
    290. 

  290.         </tr>
    291. 

  291.         <tr>
    292. 

  292.           <td class="paramkey"></td>
    293. 

  293.           <td></td>
    294. 

  294.           <td class="paramtype">const <a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> *&#160;</td>
    295. 

  295.           <td class="paramname"><em>pBTable</em>, </td>
    296. 

  296.         </tr>
    297. 

  297.         <tr>
    298. 

  298.           <td class="paramkey"></td>
    299. 

  299.           <td></td>
    300. 

  300.           <td class="paramtype"><a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> *&#160;</td>
    301. 

  301.           <td class="paramname"><em>pDst</em>, </td>
    302. 

  302.         </tr>
    303. 

  303.         <tr>
    304. 

  304.           <td class="paramkey"></td>
    305. 

  305.           <td></td>
    306. 

  306.           <td class="paramtype">uint32_t&#160;</td>
    307. 

  307.           <td class="paramname"><em>modifier</em>&#160;</td>
    308. 

  308.         </tr>
    309. 

  309.         <tr>
    310. 

  310.           <td></td>
    311. 

  311.           <td>)</td>
    312. 

  312.           <td></td><td></td>
    313. 

  313.         </tr>
    314. 

  314.       </table>
    315. 

  315. </div><div class="memdoc">
    316. 

  316. <p>end of RealFFT group </p>
    317. 

  317. <dl class="params"><dt>Parameters</dt><dd>
    318. 

  318.   <table class="params">
    319. 

  319.     <tr><td class="paramdir">[in]</td><td class="paramname">pSrc</td><td>points to input buffer </td></tr>
    320. 

  320.     <tr><td class="paramdir">[in]</td><td class="paramname">fftLen</td><td>length of FFT </td></tr>
    321. 

  321.     <tr><td class="paramdir">[in]</td><td class="paramname">pATable</td><td>points to twiddle Coef A buffer </td></tr>
    322. 

  322.     <tr><td class="paramdir">[in]</td><td class="paramname">pBTable</td><td>points to twiddle Coef B buffer </td></tr>
    323. 

  323.     <tr><td class="paramdir">[out]</td><td class="paramname">pDst</td><td>points to output buffer </td></tr>
    324. 

  324.     <tr><td class="paramdir">[in]</td><td class="paramname">modifier</td><td>twiddle coefficient modifier that supports different size FFTs with the same twiddle factor table </td></tr>
    325. 

  325.   </table>
    326. 

  326.   </dd>
    327. 

  327. </dl>
    328. 

  328. <dl class="section return"><dt>Returns</dt><dd>none </dd></dl>
    329. 

  329. 

  330. </div>
    331. 

  331. </div>
    332. 

  332. <a class="anchor" id="a522656f688f96b46d74ecced3d641ba7"></a>
    333. 

  333. <div class="memitem">
    334. 

  334. <div class="memproto">
    335. 

  335.       <table class="memname">
    336. 

  336.         <tr>
    337. 

  337.           <td class="memname">void arm_split_rifft_f32 </td>
    338. 

  338.           <td>(</td>
    339. 

  339.           <td class="paramtype"><a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> *&#160;</td>
    340. 

  340.           <td class="paramname"><em>pSrc</em>, </td>
    341. 

  341.         </tr>
    342. 

  342.         <tr>
    343. 

  343.           <td class="paramkey"></td>
    344. 

  344.           <td></td>
    345. 

  345.           <td class="paramtype">uint32_t&#160;</td>
    346. 

  346.           <td class="paramname"><em>fftLen</em>, </td>
    347. 

  347.         </tr>
    348. 

  348.         <tr>
    349. 

  349.           <td class="paramkey"></td>
    350. 

  350.           <td></td>
    351. 

  351.           <td class="paramtype">const <a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> *&#160;</td>
    352. 

  352.           <td class="paramname"><em>pATable</em>, </td>
    353. 

  353.         </tr>
    354. 

  354.         <tr>
    355. 

  355.           <td class="paramkey"></td>
    356. 

  356.           <td></td>
    357. 

  357.           <td class="paramtype">const <a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> *&#160;</td>
    358. 

  358.           <td class="paramname"><em>pBTable</em>, </td>
    359. 

  359.         </tr>
    360. 

  360.         <tr>
    361. 

  361.           <td class="paramkey"></td>
    362. 

  362.           <td></td>
    363. 

  363.           <td class="paramtype"><a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> *&#160;</td>
    364. 

  364.           <td class="paramname"><em>pDst</em>, </td>
    365. 

  365.         </tr>
    366. 

  366.         <tr>
    367. 

  367.           <td class="paramkey"></td>
    368. 

  368.           <td></td>
    369. 

  369.           <td class="paramtype">uint32_t&#160;</td>
    370. 

  370.           <td class="paramname"><em>modifier</em>&#160;</td>
    371. 

  371.         </tr>
    372. 

  372.         <tr>
    373. 

  373.           <td></td>
    374. 

  374.           <td>)</td>
    375. 

  375.           <td></td><td></td>
    376. 

  376.         </tr>
    377. 

  377.       </table>
    378. 

  378. </div><div class="memdoc">
    379. 

  379. <dl class="params"><dt>Parameters</dt><dd>
    380. 

  380.   <table class="params">
    381. 

  381.     <tr><td class="paramdir">[in]</td><td class="paramname">pSrc</td><td>points to input buffer </td></tr>
    382. 

  382.     <tr><td class="paramdir">[in]</td><td class="paramname">fftLen</td><td>length of FFT </td></tr>
    383. 

  383.     <tr><td class="paramdir">[in]</td><td class="paramname">pATable</td><td>points to twiddle Coef A buffer </td></tr>
    384. 

  384.     <tr><td class="paramdir">[in]</td><td class="paramname">pBTable</td><td>points to twiddle Coef B buffer </td></tr>
    385. 

  385.     <tr><td class="paramdir">[out]</td><td class="paramname">pDst</td><td>points to output buffer </td></tr>
    386. 

  386.     <tr><td class="paramdir">[in]</td><td class="paramname">modifier</td><td>twiddle coefficient modifier that supports different size FFTs with the same twiddle factor table </td></tr>
    387. 

  387.   </table>
    388. 

  388.   </dd>
    389. 

  389. </dl>
    390. 

  390. <dl class="section return"><dt>Returns</dt><dd>none </dd></dl>
    391. 

  391. 

  392. </div>
    393. 

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    394. 

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    395. 

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