arm__cfft__radix4__q31_8c.html 16 KB

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  109. <a href="#func-members">Functions</a> </div>
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  111. <div class="title">arm_cfft_radix4_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:ac9c7c553114c1201a3a987a11b8a6d01"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="arm__cfft__radix4__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>
  118. <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>
  119. <tr class="separator:ac9c7c553114c1201a3a987a11b8a6d01"><td class="memSeparator" colspan="2">&#160;</td></tr>
  120. <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__radix4__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>
  121. <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>
  122. <tr class="separator:ac12f1e7f159d5741358cdc36830a0395"><td class="memSeparator" colspan="2">&#160;</td></tr>
  123. <tr class="memitem:a3fab577d25c3a517973c8c214f66f268"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="arm__cfft__radix4__q31_8c.html#a3fab577d25c3a517973c8c214f66f268">arm_bitreversal_q31</a> (<a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> *pSrc, uint32_t fftLen, uint16_t bitRevFactor, uint16_t *pBitRevTab)</td></tr>
  124. <tr class="separator:a3fab577d25c3a517973c8c214f66f268"><td class="memSeparator" colspan="2">&#160;</td></tr>
  125. <tr class="memitem:gafde3ee1f58cf393b45a9073174fff548"><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#gafde3ee1f58cf393b45a9073174fff548">arm_cfft_radix4_q31</a> (const <a class="el" href="structarm__cfft__radix4__instance__q31.html">arm_cfft_radix4_instance_q31</a> *S, <a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> *pSrc)</td></tr>
  126. <tr class="memdesc:gafde3ee1f58cf393b45a9073174fff548"><td class="mdescLeft">&#160;</td><td class="mdescRight">Processing function for the Q31 CFFT/CIFFT. <a href="group___complex_f_f_t.html#gafde3ee1f58cf393b45a9073174fff548"></a><br/></td></tr>
  127. <tr class="separator:gafde3ee1f58cf393b45a9073174fff548"><td class="memSeparator" colspan="2">&#160;</td></tr>
  128. </table>
  129. <h2 class="groupheader">Function Documentation</h2>
  130. <a class="anchor" id="a3fab577d25c3a517973c8c214f66f268"></a>
  131. <div class="memitem">
  132. <div class="memproto">
  133. <table class="memname">
  134. <tr>
  135. <td class="memname">void arm_bitreversal_q31 </td>
  136. <td>(</td>
  137. <td class="paramtype"><a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> *&#160;</td>
  138. <td class="paramname"><em>pSrc</em>, </td>
  139. </tr>
  140. <tr>
  141. <td class="paramkey"></td>
  142. <td></td>
  143. <td class="paramtype">uint32_t&#160;</td>
  144. <td class="paramname"><em>fftLen</em>, </td>
  145. </tr>
  146. <tr>
  147. <td class="paramkey"></td>
  148. <td></td>
  149. <td class="paramtype">uint16_t&#160;</td>
  150. <td class="paramname"><em>bitRevFactor</em>, </td>
  151. </tr>
  152. <tr>
  153. <td class="paramkey"></td>
  154. <td></td>
  155. <td class="paramtype">uint16_t *&#160;</td>
  156. <td class="paramname"><em>pBitRevTab</em>&#160;</td>
  157. </tr>
  158. <tr>
  159. <td></td>
  160. <td>)</td>
  161. <td></td><td></td>
  162. </tr>
  163. </table>
  164. </div><div class="memdoc">
  165. <p>Referenced by <a class="el" href="group___complex_f_f_t.html#ga6321f703ec87a274aedaab33d3e766b4">arm_cfft_radix2_q31()</a>, and <a class="el" href="group___complex_f_f_t.html#gafde3ee1f58cf393b45a9073174fff548">arm_cfft_radix4_q31()</a>.</p>
  166. </div>
  167. </div>
  168. <a class="anchor" id="ac9c7c553114c1201a3a987a11b8a6d01"></a>
  169. <div class="memitem">
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  172. <tr>
  173. <td class="memname">void arm_radix4_butterfly_inverse_q31 </td>
  174. <td>(</td>
  175. <td class="paramtype"><a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> *&#160;</td>
  176. <td class="paramname"><em>pSrc</em>, </td>
  177. </tr>
  178. <tr>
  179. <td class="paramkey"></td>
  180. <td></td>
  181. <td class="paramtype">uint32_t&#160;</td>
  182. <td class="paramname"><em>fftLen</em>, </td>
  183. </tr>
  184. <tr>
  185. <td class="paramkey"></td>
  186. <td></td>
  187. <td class="paramtype"><a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> *&#160;</td>
  188. <td class="paramname"><em>pCoef</em>, </td>
  189. </tr>
  190. <tr>
  191. <td class="paramkey"></td>
  192. <td></td>
  193. <td class="paramtype">uint32_t&#160;</td>
  194. <td class="paramname"><em>twidCoefModifier</em>&#160;</td>
  195. </tr>
  196. <tr>
  197. <td></td>
  198. <td>)</td>
  199. <td></td><td></td>
  200. </tr>
  201. </table>
  202. </div><div class="memdoc">
  203. <dl class="params"><dt>Parameters</dt><dd>
  204. <table class="params">
  205. <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>
  206. <tr><td class="paramdir">[in]</td><td class="paramname">fftLen</td><td>length of the FFT. </td></tr>
  207. <tr><td class="paramdir">[in]</td><td class="paramname">*pCoef</td><td>points to twiddle coefficient buffer. </td></tr>
  208. <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>
  209. </table>
  210. </dd>
  211. </dl>
  212. <dl class="section return"><dt>Returns</dt><dd>none. </dd></dl>
  213. <p>References <a class="el" href="arm__math_8h.html#ad1b053da364f9fd82ca1a381df7590b6">__SIMD64</a>.</p>
  214. <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>
  215. </div>
  216. </div>
  217. <a class="anchor" id="ac12f1e7f159d5741358cdc36830a0395"></a>
  218. <div class="memitem">
  219. <div class="memproto">
  220. <table class="memname">
  221. <tr>
  222. <td class="memname">void arm_radix4_butterfly_q31 </td>
  223. <td>(</td>
  224. <td class="paramtype"><a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> *&#160;</td>
  225. <td class="paramname"><em>pSrc</em>, </td>
  226. </tr>
  227. <tr>
  228. <td class="paramkey"></td>
  229. <td></td>
  230. <td class="paramtype">uint32_t&#160;</td>
  231. <td class="paramname"><em>fftLen</em>, </td>
  232. </tr>
  233. <tr>
  234. <td class="paramkey"></td>
  235. <td></td>
  236. <td class="paramtype"><a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> *&#160;</td>
  237. <td class="paramname"><em>pCoef</em>, </td>
  238. </tr>
  239. <tr>
  240. <td class="paramkey"></td>
  241. <td></td>
  242. <td class="paramtype">uint32_t&#160;</td>
  243. <td class="paramname"><em>twidCoefModifier</em>&#160;</td>
  244. </tr>
  245. <tr>
  246. <td></td>
  247. <td>)</td>
  248. <td></td><td></td>
  249. </tr>
  250. </table>
  251. </div><div class="memdoc">
  252. <p>end of ComplexFFT group </p>
  253. <dl class="params"><dt>Parameters</dt><dd>
  254. <table class="params">
  255. <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>
  256. <tr><td class="paramdir">[in]</td><td class="paramname">fftLen</td><td>length of the FFT. </td></tr>
  257. <tr><td class="paramdir">[in]</td><td class="paramname">*pCoef</td><td>points to twiddle coefficient buffer. </td></tr>
  258. <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>
  259. </table>
  260. </dd>
  261. </dl>
  262. <dl class="section return"><dt>Returns</dt><dd>none. </dd></dl>
  263. <p>References <a class="el" href="arm__math_8h.html#ad1b053da364f9fd82ca1a381df7590b6">__SIMD64</a>.</p>
  264. <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>
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