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    115. 

  115. <div class="contents">
    116. 

  116. <table class="memberdecls">
    117. 

  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:a2d01d2045f280c32036da97d33c52440"><td class="memItemLeft" align="right" valign="top">void&#160;</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>
    120. 

  120. <tr class="memdesc:a2d01d2045f280c32036da97d33c52440"><td class="mdescLeft">&#160;</td><td class="mdescRight">Core function for the Q15 CFFT butterfly process.  <a href="#a2d01d2045f280c32036da97d33c52440"></a><br/></td></tr>
    121. 

  121. <tr class="separator:a2d01d2045f280c32036da97d33c52440"><td class="memSeparator" colspan="2">&#160;</td></tr>
    122. 

  122. <tr class="memitem:aad04e8439d17dab5617bf1be268bb391"><td class="memItemLeft" align="right" valign="top">void&#160;</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>
    123. 

  123. <tr class="memdesc:aad04e8439d17dab5617bf1be268bb391"><td class="mdescLeft">&#160;</td><td class="mdescRight">Core function for the Q15 CIFFT butterfly process.  <a href="#aad04e8439d17dab5617bf1be268bb391"></a><br/></td></tr>
    124. 

  124. <tr class="separator:aad04e8439d17dab5617bf1be268bb391"><td class="memSeparator" colspan="2">&#160;</td></tr>
    125. 

  125. <tr class="memitem:a73f48eaea9297605705ae25d3405343e"><td class="memItemLeft" align="right" valign="top">void&#160;</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>
    126. 

  126. <tr class="separator:a73f48eaea9297605705ae25d3405343e"><td class="memSeparator" colspan="2">&#160;</td></tr>
    127. 

  127. <tr class="memitem:ga8d66cdac41b8bf6cefdb895456eee84a"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group___complex_f_f_t.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>
    128. 

  128. <tr class="memdesc:ga8d66cdac41b8bf6cefdb895456eee84a"><td class="mdescLeft">&#160;</td><td class="mdescRight">Processing function for the Q15 CFFT/CIFFT.  <a href="group___complex_f_f_t.html#ga8d66cdac41b8bf6cefdb895456eee84a"></a><br/></td></tr>
    129. 

  129. <tr class="separator:ga8d66cdac41b8bf6cefdb895456eee84a"><td class="memSeparator" colspan="2">&#160;</td></tr>
    130. 

  130. </table>
    131. 

  131. <h2 class="groupheader">Function Documentation</h2>
    132. 

  132. <a class="anchor" id="a73f48eaea9297605705ae25d3405343e"></a>
    133. 

  133. <div class="memitem">
    134. 

  134. <div class="memproto">
    135. 

  135.       <table class="memname">
    136. 

  136.         <tr>
    137. 

  137.           <td class="memname">void arm_bitreversal_q15 </td>
    138. 

  138.           <td>(</td>
    139. 

  139.           <td class="paramtype"><a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> *&#160;</td>
    140. 

  140.           <td class="paramname"><em>pSrc</em>, </td>
    141. 

  141.         </tr>
    142. 

  142.         <tr>
    143. 

  143.           <td class="paramkey"></td>
    144. 

  144.           <td></td>
    145. 

  145.           <td class="paramtype">uint32_t&#160;</td>
    146. 

  146.           <td class="paramname"><em>fftLen</em>, </td>
    147. 

  147.         </tr>
    148. 

  148.         <tr>
    149. 

  149.           <td class="paramkey"></td>
    150. 

  150.           <td></td>
    151. 

  151.           <td class="paramtype">uint16_t&#160;</td>
    152. 

  152.           <td class="paramname"><em>bitRevFactor</em>, </td>
    153. 

  153.         </tr>
    154. 

  154.         <tr>
    155. 

  155.           <td class="paramkey"></td>
    156. 

  156.           <td></td>
    157. 

  157.           <td class="paramtype">uint16_t *&#160;</td>
    158. 

  158.           <td class="paramname"><em>pBitRevTab</em>&#160;</td>
    159. 

  159.         </tr>
    160. 

  160.         <tr>
    161. 

  161.           <td></td>
    162. 

  162.           <td>)</td>
    163. 

  163.           <td></td><td></td>
    164. 

  164.         </tr>
    165. 

  165.       </table>
    166. 

  166. </div><div class="memdoc">
    167. 

  167. 

  168. <p>Referenced by <a class="el" href="group___complex_f_f_t.html#ga55b424341dc3efd3fa0bcaaff4bdbf40">arm_cfft_radix2_q15()</a>, and <a class="el" href="group___complex_f_f_t.html#ga8d66cdac41b8bf6cefdb895456eee84a">arm_cfft_radix4_q15()</a>.</p>
    169. 

  169. 

  170. </div>
    171. 

  171. </div>
    172. 

  172. <a class="anchor" id="aad04e8439d17dab5617bf1be268bb391"></a>
    173. 

  173. <div class="memitem">
    174. 

  174. <div class="memproto">
    175. 

  175.       <table class="memname">
    176. 

  176.         <tr>
    177. 

  177.           <td class="memname">void arm_radix4_butterfly_inverse_q15 </td>
    178. 

  178.           <td>(</td>
    179. 

  179.           <td class="paramtype"><a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> *&#160;</td>
    180. 

  180.           <td class="paramname"><em>pSrc16</em>, </td>
    181. 

  181.         </tr>
    182. 

  182.         <tr>
    183. 

  183.           <td class="paramkey"></td>
    184. 

  184.           <td></td>
    185. 

  185.           <td class="paramtype">uint32_t&#160;</td>
    186. 

  186.           <td class="paramname"><em>fftLen</em>, </td>
    187. 

  187.         </tr>
    188. 

  188.         <tr>
    189. 

  189.           <td class="paramkey"></td>
    190. 

  190.           <td></td>
    191. 

  191.           <td class="paramtype"><a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> *&#160;</td>
    192. 

  192.           <td class="paramname"><em>pCoef16</em>, </td>
    193. 

  193.         </tr>
    194. 

  194.         <tr>
    195. 

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

  196.           <td></td>
    197. 

  197.           <td class="paramtype">uint32_t&#160;</td>
    198. 

  198.           <td class="paramname"><em>twidCoefModifier</em>&#160;</td>
    199. 

  199.         </tr>
    200. 

  200.         <tr>
    201. 

  201.           <td></td>
    202. 

  202.           <td>)</td>
    203. 

  203.           <td></td><td></td>
    204. 

  204.         </tr>
    205. 

  205.       </table>
    206. 

  206. </div><div class="memdoc">
    207. 

  207. <dl class="params"><dt>Parameters</dt><dd>
    208. 

  208.   <table class="params">
    209. 

  209.     <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>
    210. 

  210.     <tr><td class="paramdir">[in]</td><td class="paramname">fftLen</td><td>length of the FFT. </td></tr>
    211. 

  211.     <tr><td class="paramdir">[in]</td><td class="paramname">*pCoef16</td><td>points to twiddle coefficient buffer. </td></tr>
    212. 

  212.     <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>
    213. 

  213.   </table>
    214. 

  214.   </dd>
    215. 

  215. </dl>
    216. 

  216. <dl class="section return"><dt>Returns</dt><dd>none. </dd></dl>
    217. 

  217. 

  218. <p>References <a class="el" href="arm__math_8h.html#a9de2e0a5785be82866bcb96012282248">__SIMD32</a>, and <a class="el" href="arm__math_8h.html#af0d54ec57b936994a34f073d0049ea3f">_SIMD32_OFFSET</a>.</p>
    219. 

  219. 

  220. <p>Referenced by <a class="el" href="group___complex_f_f_t.html#ga68cdacd2267a2967955e40e6b7ec1229">arm_cfft_q15()</a>, <a class="el" href="group___complex_f_f_t.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>
    221. 

  221. 

  222. </div>
    223. 

  223. </div>
    224. 

  224. <a class="anchor" id="a2d01d2045f280c32036da97d33c52440"></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_q15 </td>
    230. 

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

  231.           <td class="paramtype"><a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> *&#160;</td>
    232. 

  232.           <td class="paramname"><em>pSrc16</em>, </td>
    233. 

  233.         </tr>
    234. 

  234.         <tr>
    235. 

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

  236.           <td></td>
    237. 

  237.           <td class="paramtype">uint32_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"><a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> *&#160;</td>
    244. 

  244.           <td class="paramname"><em>pCoef16</em>, </td>
    245. 

  245.         </tr>
    246. 

  246.         <tr>
    247. 

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

  248.           <td></td>
    249. 

  249.           <td class="paramtype">uint32_t&#160;</td>
    250. 

  250.           <td class="paramname"><em>twidCoefModifier</em>&#160;</td>
    251. 

  251.         </tr>
    252. 

  252.         <tr>
    253. 

  253.           <td></td>
    254. 

  254.           <td>)</td>
    255. 

  255.           <td></td><td></td>
    256. 

  256.         </tr>
    257. 

  257.       </table>
    258. 

  258. </div><div class="memdoc">
    259. 

  259. <p>end of ComplexFFT group </p>
    260. 

  260. <dl class="params"><dt>Parameters</dt><dd>
    261. 

  261.   <table class="params">
    262. 

  262.     <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>
    263. 

  263.     <tr><td class="paramdir">[in]</td><td class="paramname">fftLen</td><td>length of the FFT. </td></tr>
    264. 

  264.     <tr><td class="paramdir">[in]</td><td class="paramname">*pCoef16</td><td>points to twiddle coefficient buffer. </td></tr>
    265. 

  265.     <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>
    266. 

  266.   </table>
    267. 

  267.   </dd>
    268. 

  268. </dl>
    269. 

  269. <dl class="section return"><dt>Returns</dt><dd>none. </dd></dl>
    270. 

  270. 

  271. <p>References <a class="el" href="arm__math_8h.html#a9de2e0a5785be82866bcb96012282248">__SIMD32</a>, and <a class="el" href="arm__math_8h.html#af0d54ec57b936994a34f073d0049ea3f">_SIMD32_OFFSET</a>.</p>
    272. 

  272. 

  273. <p>Referenced by <a class="el" href="group___complex_f_f_t.html#ga68cdacd2267a2967955e40e6b7ec1229">arm_cfft_q15()</a>, <a class="el" href="group___complex_f_f_t.html#ga8d66cdac41b8bf6cefdb895456eee84a">arm_cfft_radix4_q15()</a>, and <a class="el" href="arm__cfft__q15_8c.html#af1d4a751153857c173511e0c77ab4fa9">arm_cfft_radix4by2_q15()</a>.</p>
    274. 

  274. 

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    276. 

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    283. 

  283.     <li class="footer">Generated on Tue Sep 23 2014 18:52:42 for CMSIS-DSP by ARM Ltd. All rights reserved.
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