arm__cfft__q31_8c.html 20 KB

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  109. <a href="#func-members">Functions</a> </div>
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  111. <div class="title">arm_cfft_q31.c File Reference</div> </div>
  112. </div><!--header-->
  113. <div class="contents">
  114. <table class="memberdecls">
  115. <tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="func-members"></a>
  116. Functions</h2></td></tr>
  117. <tr class="memitem:ac12f1e7f159d5741358cdc36830a0395"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="arm__cfft__q31_8c.html#ac12f1e7f159d5741358cdc36830a0395">arm_radix4_butterfly_q31</a> (<a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> *pSrc, uint32_t fftLen, <a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> *pCoef, uint32_t twidCoefModifier)</td></tr>
  118. <tr class="memdesc:ac12f1e7f159d5741358cdc36830a0395"><td class="mdescLeft">&#160;</td><td class="mdescRight">Core function for the Q31 CFFT butterfly process. <a href="#ac12f1e7f159d5741358cdc36830a0395"></a><br/></td></tr>
  119. <tr class="separator:ac12f1e7f159d5741358cdc36830a0395"><td class="memSeparator" colspan="2">&#160;</td></tr>
  120. <tr class="memitem:ac9c7c553114c1201a3a987a11b8a6d01"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="arm__cfft__q31_8c.html#ac9c7c553114c1201a3a987a11b8a6d01">arm_radix4_butterfly_inverse_q31</a> (<a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> *pSrc, uint32_t fftLen, <a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> *pCoef, uint32_t twidCoefModifier)</td></tr>
  121. <tr class="memdesc:ac9c7c553114c1201a3a987a11b8a6d01"><td class="mdescLeft">&#160;</td><td class="mdescRight">Core function for the Q31 CIFFT butterfly process. <a href="#ac9c7c553114c1201a3a987a11b8a6d01"></a><br/></td></tr>
  122. <tr class="separator:ac9c7c553114c1201a3a987a11b8a6d01"><td class="memSeparator" colspan="2">&#160;</td></tr>
  123. <tr class="memitem:ac8e7ebe1cb131a5b0f55d0464640591f"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="arm__cfft__q31_8c.html#ac8e7ebe1cb131a5b0f55d0464640591f">arm_bitreversal_32</a> (uint32_t *pSrc, const uint16_t bitRevLen, const uint16_t *pBitRevTable)</td></tr>
  124. <tr class="separator:ac8e7ebe1cb131a5b0f55d0464640591f"><td class="memSeparator" colspan="2">&#160;</td></tr>
  125. <tr class="memitem:af6df8bf714c30d44e6b871ea87d22b30"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="arm__cfft__q31_8c.html#af6df8bf714c30d44e6b871ea87d22b30">arm_cfft_radix4by2_q31</a> (<a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> *pSrc, uint32_t fftLen, const <a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> *pCoef)</td></tr>
  126. <tr class="separator:af6df8bf714c30d44e6b871ea87d22b30"><td class="memSeparator" colspan="2">&#160;</td></tr>
  127. <tr class="memitem:a3f3ae10bc2057cc1360abfa25f224c8c"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="arm__cfft__q31_8c.html#a3f3ae10bc2057cc1360abfa25f224c8c">arm_cfft_radix4by2_inverse_q31</a> (<a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> *pSrc, uint32_t fftLen, const <a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> *pCoef)</td></tr>
  128. <tr class="separator:a3f3ae10bc2057cc1360abfa25f224c8c"><td class="memSeparator" colspan="2">&#160;</td></tr>
  129. <tr class="memitem:ga5a0008bd997ab6e2e299ef2fb272fb4b"><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#ga5a0008bd997ab6e2e299ef2fb272fb4b">arm_cfft_q31</a> (const <a class="el" href="structarm__cfft__instance__q31.html">arm_cfft_instance_q31</a> *S, <a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> *p1, uint8_t <a class="el" href="_g_c_c_2arm__fft__bin__example__f32_8c.html#a379ccb99013d369a41b49619083c16ef">ifftFlag</a>, uint8_t bitReverseFlag)</td></tr>
  130. <tr class="memdesc:ga5a0008bd997ab6e2e299ef2fb272fb4b"><td class="mdescLeft">&#160;</td><td class="mdescRight">Processing function for the floating-point complex FFT. <a href="group___complex_f_f_t.html#ga5a0008bd997ab6e2e299ef2fb272fb4b"></a><br/></td></tr>
  131. <tr class="separator:ga5a0008bd997ab6e2e299ef2fb272fb4b"><td class="memSeparator" colspan="2">&#160;</td></tr>
  132. </table>
  133. <h2 class="groupheader">Function Documentation</h2>
  134. <a class="anchor" id="ac8e7ebe1cb131a5b0f55d0464640591f"></a>
  135. <div class="memitem">
  136. <div class="memproto">
  137. <table class="memname">
  138. <tr>
  139. <td class="memname">void arm_bitreversal_32 </td>
  140. <td>(</td>
  141. <td class="paramtype">uint32_t *&#160;</td>
  142. <td class="paramname"><em>pSrc</em>, </td>
  143. </tr>
  144. <tr>
  145. <td class="paramkey"></td>
  146. <td></td>
  147. <td class="paramtype">const uint16_t&#160;</td>
  148. <td class="paramname"><em>bitRevLen</em>, </td>
  149. </tr>
  150. <tr>
  151. <td class="paramkey"></td>
  152. <td></td>
  153. <td class="paramtype">const uint16_t *&#160;</td>
  154. <td class="paramname"><em>pBitRevTable</em>&#160;</td>
  155. </tr>
  156. <tr>
  157. <td></td>
  158. <td>)</td>
  159. <td></td><td></td>
  160. </tr>
  161. </table>
  162. </div><div class="memdoc">
  163. </div>
  164. </div>
  165. <a class="anchor" id="a3f3ae10bc2057cc1360abfa25f224c8c"></a>
  166. <div class="memitem">
  167. <div class="memproto">
  168. <table class="memname">
  169. <tr>
  170. <td class="memname">void arm_cfft_radix4by2_inverse_q31 </td>
  171. <td>(</td>
  172. <td class="paramtype"><a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> *&#160;</td>
  173. <td class="paramname"><em>pSrc</em>, </td>
  174. </tr>
  175. <tr>
  176. <td class="paramkey"></td>
  177. <td></td>
  178. <td class="paramtype">uint32_t&#160;</td>
  179. <td class="paramname"><em>fftLen</em>, </td>
  180. </tr>
  181. <tr>
  182. <td class="paramkey"></td>
  183. <td></td>
  184. <td class="paramtype">const <a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> *&#160;</td>
  185. <td class="paramname"><em>pCoef</em>&#160;</td>
  186. </tr>
  187. <tr>
  188. <td></td>
  189. <td>)</td>
  190. <td></td><td></td>
  191. </tr>
  192. </table>
  193. </div><div class="memdoc">
  194. <p>References <a class="el" href="arm__cfft__q31_8c.html#ac9c7c553114c1201a3a987a11b8a6d01">arm_radix4_butterfly_inverse_q31()</a>, <a class="el" href="arm__math_8h.html#a960f210642058d2b3d5368729a6e8375">mult_32x32_keep32_R</a>, <a class="el" href="arm__math_8h.html#aba3e538352fc7f9d6d15f9a18d469399">multAcc_32x32_keep32_R</a>, and <a class="el" href="arm__math_8h.html#a668fbf1cd1c3bc8faf1b1c83964ade23">multSub_32x32_keep32_R</a>.</p>
  195. <p>Referenced by <a class="el" href="group___complex_f_f_t.html#ga5a0008bd997ab6e2e299ef2fb272fb4b">arm_cfft_q31()</a>.</p>
  196. </div>
  197. </div>
  198. <a class="anchor" id="af6df8bf714c30d44e6b871ea87d22b30"></a>
  199. <div class="memitem">
  200. <div class="memproto">
  201. <table class="memname">
  202. <tr>
  203. <td class="memname">void arm_cfft_radix4by2_q31 </td>
  204. <td>(</td>
  205. <td class="paramtype"><a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> *&#160;</td>
  206. <td class="paramname"><em>pSrc</em>, </td>
  207. </tr>
  208. <tr>
  209. <td class="paramkey"></td>
  210. <td></td>
  211. <td class="paramtype">uint32_t&#160;</td>
  212. <td class="paramname"><em>fftLen</em>, </td>
  213. </tr>
  214. <tr>
  215. <td class="paramkey"></td>
  216. <td></td>
  217. <td class="paramtype">const <a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> *&#160;</td>
  218. <td class="paramname"><em>pCoef</em>&#160;</td>
  219. </tr>
  220. <tr>
  221. <td></td>
  222. <td>)</td>
  223. <td></td><td></td>
  224. </tr>
  225. </table>
  226. </div><div class="memdoc">
  227. <p>end of ComplexFFT group </p>
  228. <p>References <a class="el" href="arm__cfft__q31_8c.html#ac12f1e7f159d5741358cdc36830a0395">arm_radix4_butterfly_q31()</a>, <a class="el" href="arm__math_8h.html#a960f210642058d2b3d5368729a6e8375">mult_32x32_keep32_R</a>, <a class="el" href="arm__math_8h.html#aba3e538352fc7f9d6d15f9a18d469399">multAcc_32x32_keep32_R</a>, and <a class="el" href="arm__math_8h.html#a668fbf1cd1c3bc8faf1b1c83964ade23">multSub_32x32_keep32_R</a>.</p>
  229. <p>Referenced by <a class="el" href="group___complex_f_f_t.html#ga5a0008bd997ab6e2e299ef2fb272fb4b">arm_cfft_q31()</a>.</p>
  230. </div>
  231. </div>
  232. <a class="anchor" id="ac9c7c553114c1201a3a987a11b8a6d01"></a>
  233. <div class="memitem">
  234. <div class="memproto">
  235. <table class="memname">
  236. <tr>
  237. <td class="memname">void arm_radix4_butterfly_inverse_q31 </td>
  238. <td>(</td>
  239. <td class="paramtype"><a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> *&#160;</td>
  240. <td class="paramname"><em>pSrc</em>, </td>
  241. </tr>
  242. <tr>
  243. <td class="paramkey"></td>
  244. <td></td>
  245. <td class="paramtype">uint32_t&#160;</td>
  246. <td class="paramname"><em>fftLen</em>, </td>
  247. </tr>
  248. <tr>
  249. <td class="paramkey"></td>
  250. <td></td>
  251. <td class="paramtype"><a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> *&#160;</td>
  252. <td class="paramname"><em>pCoef</em>, </td>
  253. </tr>
  254. <tr>
  255. <td class="paramkey"></td>
  256. <td></td>
  257. <td class="paramtype">uint32_t&#160;</td>
  258. <td class="paramname"><em>twidCoefModifier</em>&#160;</td>
  259. </tr>
  260. <tr>
  261. <td></td>
  262. <td>)</td>
  263. <td></td><td></td>
  264. </tr>
  265. </table>
  266. </div><div class="memdoc">
  267. <dl class="params"><dt>Parameters</dt><dd>
  268. <table class="params">
  269. <tr><td class="paramdir">[in,out]</td><td class="paramname">*pSrc</td><td>points to the in-place buffer of Q31 data type. </td></tr>
  270. <tr><td class="paramdir">[in]</td><td class="paramname">fftLen</td><td>length of the FFT. </td></tr>
  271. <tr><td class="paramdir">[in]</td><td class="paramname">*pCoef</td><td>points to twiddle coefficient buffer. </td></tr>
  272. <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>
  273. </table>
  274. </dd>
  275. </dl>
  276. <dl class="section return"><dt>Returns</dt><dd>none. </dd></dl>
  277. <p>References <a class="el" href="arm__math_8h.html#ad1b053da364f9fd82ca1a381df7590b6">__SIMD64</a>.</p>
  278. <p>Referenced by <a class="el" href="group___complex_f_f_t.html#ga5a0008bd997ab6e2e299ef2fb272fb4b">arm_cfft_q31()</a>, <a class="el" href="group___complex_f_f_t.html#gafde3ee1f58cf393b45a9073174fff548">arm_cfft_radix4_q31()</a>, and <a class="el" href="arm__cfft__q31_8c.html#a3f3ae10bc2057cc1360abfa25f224c8c">arm_cfft_radix4by2_inverse_q31()</a>.</p>
  279. </div>
  280. </div>
  281. <a class="anchor" id="ac12f1e7f159d5741358cdc36830a0395"></a>
  282. <div class="memitem">
  283. <div class="memproto">
  284. <table class="memname">
  285. <tr>
  286. <td class="memname">void arm_radix4_butterfly_q31 </td>
  287. <td>(</td>
  288. <td class="paramtype"><a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> *&#160;</td>
  289. <td class="paramname"><em>pSrc</em>, </td>
  290. </tr>
  291. <tr>
  292. <td class="paramkey"></td>
  293. <td></td>
  294. <td class="paramtype">uint32_t&#160;</td>
  295. <td class="paramname"><em>fftLen</em>, </td>
  296. </tr>
  297. <tr>
  298. <td class="paramkey"></td>
  299. <td></td>
  300. <td class="paramtype"><a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> *&#160;</td>
  301. <td class="paramname"><em>pCoef</em>, </td>
  302. </tr>
  303. <tr>
  304. <td class="paramkey"></td>
  305. <td></td>
  306. <td class="paramtype">uint32_t&#160;</td>
  307. <td class="paramname"><em>twidCoefModifier</em>&#160;</td>
  308. </tr>
  309. <tr>
  310. <td></td>
  311. <td>)</td>
  312. <td></td><td></td>
  313. </tr>
  314. </table>
  315. </div><div class="memdoc">
  316. <p>end of ComplexFFT group </p>
  317. <dl class="params"><dt>Parameters</dt><dd>
  318. <table class="params">
  319. <tr><td class="paramdir">[in,out]</td><td class="paramname">*pSrc</td><td>points to the in-place buffer of Q31 data type. </td></tr>
  320. <tr><td class="paramdir">[in]</td><td class="paramname">fftLen</td><td>length of the FFT. </td></tr>
  321. <tr><td class="paramdir">[in]</td><td class="paramname">*pCoef</td><td>points to twiddle coefficient buffer. </td></tr>
  322. <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>
  323. </table>
  324. </dd>
  325. </dl>
  326. <dl class="section return"><dt>Returns</dt><dd>none. </dd></dl>
  327. <p>References <a class="el" href="arm__math_8h.html#ad1b053da364f9fd82ca1a381df7590b6">__SIMD64</a>.</p>
  328. <p>Referenced by <a class="el" href="group___complex_f_f_t.html#ga5a0008bd997ab6e2e299ef2fb272fb4b">arm_cfft_q31()</a>, <a class="el" href="group___complex_f_f_t.html#gafde3ee1f58cf393b45a9073174fff548">arm_cfft_radix4_q31()</a>, and <a class="el" href="arm__cfft__q31_8c.html#af6df8bf714c30d44e6b871ea87d22b30">arm_cfft_radix4by2_q31()</a>.</p>
  329. </div>
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  337. <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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