arm__rfft__q15_8c.html 15 KB

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  109. <a href="#func-members">Functions</a> </div>
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  111. <div class="title">arm_rfft_q15.c File Reference</div> </div>
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  113. <div class="contents">
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  115. <tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="func-members"></a>
  116. Functions</h2></td></tr>
  117. <tr class="memitem:a7c2a21793586f9a69c42140665550e09"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="arm__rfft__q15_8c.html#a7c2a21793586f9a69c42140665550e09">arm_split_rfft_q15</a> (<a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> *pSrc, uint32_t fftLen, <a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> *pATable, <a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> *pBTable, <a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> *pDst, uint32_t modifier)</td></tr>
  118. <tr class="memdesc:a7c2a21793586f9a69c42140665550e09"><td class="mdescLeft">&#160;</td><td class="mdescRight">Core Real FFT process. <a href="#a7c2a21793586f9a69c42140665550e09"></a><br/></td></tr>
  119. <tr class="separator:a7c2a21793586f9a69c42140665550e09"><td class="memSeparator" colspan="2">&#160;</td></tr>
  120. <tr class="memitem:aa72a531dd15a53570dddaf01b62158f4"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="arm__rfft__q15_8c.html#aa72a531dd15a53570dddaf01b62158f4">arm_split_rifft_q15</a> (<a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> *pSrc, uint32_t fftLen, <a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> *pATable, <a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> *pBTable, <a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> *pDst, uint32_t modifier)</td></tr>
  121. <tr class="memdesc:aa72a531dd15a53570dddaf01b62158f4"><td class="mdescLeft">&#160;</td><td class="mdescRight">Core Real IFFT process. <a href="#aa72a531dd15a53570dddaf01b62158f4"></a><br/></td></tr>
  122. <tr class="separator:aa72a531dd15a53570dddaf01b62158f4"><td class="memSeparator" colspan="2">&#160;</td></tr>
  123. <tr class="memitem:ga00e615f5db21736ad5b27fb6146f3fc5"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group___real_f_f_t.html#ga00e615f5db21736ad5b27fb6146f3fc5">arm_rfft_q15</a> (const <a class="el" href="structarm__rfft__instance__q15.html">arm_rfft_instance_q15</a> *S, <a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> *pSrc, <a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> *pDst)</td></tr>
  124. <tr class="memdesc:ga00e615f5db21736ad5b27fb6146f3fc5"><td class="mdescLeft">&#160;</td><td class="mdescRight">Processing function for the Q15 RFFT/RIFFT. <a href="group___real_f_f_t.html#ga00e615f5db21736ad5b27fb6146f3fc5"></a><br/></td></tr>
  125. <tr class="separator:ga00e615f5db21736ad5b27fb6146f3fc5"><td class="memSeparator" colspan="2">&#160;</td></tr>
  126. </table>
  127. <h2 class="groupheader">Function Documentation</h2>
  128. <a class="anchor" id="a7c2a21793586f9a69c42140665550e09"></a>
  129. <div class="memitem">
  130. <div class="memproto">
  131. <table class="memname">
  132. <tr>
  133. <td class="memname">void arm_split_rfft_q15 </td>
  134. <td>(</td>
  135. <td class="paramtype"><a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> *&#160;</td>
  136. <td class="paramname"><em>pSrc</em>, </td>
  137. </tr>
  138. <tr>
  139. <td class="paramkey"></td>
  140. <td></td>
  141. <td class="paramtype">uint32_t&#160;</td>
  142. <td class="paramname"><em>fftLen</em>, </td>
  143. </tr>
  144. <tr>
  145. <td class="paramkey"></td>
  146. <td></td>
  147. <td class="paramtype"><a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> *&#160;</td>
  148. <td class="paramname"><em>pATable</em>, </td>
  149. </tr>
  150. <tr>
  151. <td class="paramkey"></td>
  152. <td></td>
  153. <td class="paramtype"><a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> *&#160;</td>
  154. <td class="paramname"><em>pBTable</em>, </td>
  155. </tr>
  156. <tr>
  157. <td class="paramkey"></td>
  158. <td></td>
  159. <td class="paramtype"><a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> *&#160;</td>
  160. <td class="paramname"><em>pDst</em>, </td>
  161. </tr>
  162. <tr>
  163. <td class="paramkey"></td>
  164. <td></td>
  165. <td class="paramtype">uint32_t&#160;</td>
  166. <td class="paramname"><em>modifier</em>&#160;</td>
  167. </tr>
  168. <tr>
  169. <td></td>
  170. <td>)</td>
  171. <td></td><td></td>
  172. </tr>
  173. </table>
  174. </div><div class="memdoc">
  175. <p>end of RealFFT group </p>
  176. <dl class="params"><dt>Parameters</dt><dd>
  177. <table class="params">
  178. <tr><td class="paramname">*pSrc</td><td>points to the input buffer. </td></tr>
  179. <tr><td class="paramname">fftLen</td><td>length of FFT. </td></tr>
  180. <tr><td class="paramname">*pATable</td><td>points to the A twiddle Coef buffer. </td></tr>
  181. <tr><td class="paramname">*pBTable</td><td>points to the B twiddle Coef buffer. </td></tr>
  182. <tr><td class="paramname">*pDst</td><td>points to the output buffer. </td></tr>
  183. <tr><td class="paramname">modifier</td><td>twiddle coefficient modifier that supports different size FFTs with the same twiddle factor table. </td></tr>
  184. </table>
  185. </dd>
  186. </dl>
  187. <dl class="section return"><dt>Returns</dt><dd>none. The function implements a Real FFT </dd></dl>
  188. <p>References <a class="el" href="arm__math_8h.html#a9de2e0a5785be82866bcb96012282248">__SIMD32</a>.</p>
  189. <p>Referenced by <a class="el" href="group___real_f_f_t.html#ga00e615f5db21736ad5b27fb6146f3fc5">arm_rfft_q15()</a>.</p>
  190. </div>
  191. </div>
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  193. <div class="memitem">
  194. <div class="memproto">
  195. <table class="memname">
  196. <tr>
  197. <td class="memname">void arm_split_rifft_q15 </td>
  198. <td>(</td>
  199. <td class="paramtype"><a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> *&#160;</td>
  200. <td class="paramname"><em>pSrc</em>, </td>
  201. </tr>
  202. <tr>
  203. <td class="paramkey"></td>
  204. <td></td>
  205. <td class="paramtype">uint32_t&#160;</td>
  206. <td class="paramname"><em>fftLen</em>, </td>
  207. </tr>
  208. <tr>
  209. <td class="paramkey"></td>
  210. <td></td>
  211. <td class="paramtype"><a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> *&#160;</td>
  212. <td class="paramname"><em>pATable</em>, </td>
  213. </tr>
  214. <tr>
  215. <td class="paramkey"></td>
  216. <td></td>
  217. <td class="paramtype"><a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> *&#160;</td>
  218. <td class="paramname"><em>pBTable</em>, </td>
  219. </tr>
  220. <tr>
  221. <td class="paramkey"></td>
  222. <td></td>
  223. <td class="paramtype"><a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> *&#160;</td>
  224. <td class="paramname"><em>pDst</em>, </td>
  225. </tr>
  226. <tr>
  227. <td class="paramkey"></td>
  228. <td></td>
  229. <td class="paramtype">uint32_t&#160;</td>
  230. <td class="paramname"><em>modifier</em>&#160;</td>
  231. </tr>
  232. <tr>
  233. <td></td>
  234. <td>)</td>
  235. <td></td><td></td>
  236. </tr>
  237. </table>
  238. </div><div class="memdoc">
  239. <dl class="params"><dt>Parameters</dt><dd>
  240. <table class="params">
  241. <tr><td class="paramdir">[in]</td><td class="paramname">*pSrc</td><td>points to the input buffer. </td></tr>
  242. <tr><td class="paramdir">[in]</td><td class="paramname">fftLen</td><td>length of FFT. </td></tr>
  243. <tr><td class="paramdir">[in]</td><td class="paramname">*pATable</td><td>points to the twiddle Coef A buffer. </td></tr>
  244. <tr><td class="paramdir">[in]</td><td class="paramname">*pBTable</td><td>points to the twiddle Coef B buffer. </td></tr>
  245. <tr><td class="paramdir">[out]</td><td class="paramname">*pDst</td><td>points to the output buffer. </td></tr>
  246. <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>
  247. </table>
  248. </dd>
  249. </dl>
  250. <dl class="section return"><dt>Returns</dt><dd>none. The function implements a Real IFFT </dd></dl>
  251. <p>References <a class="el" href="arm__math_8h.html#a9de2e0a5785be82866bcb96012282248">__SIMD32</a>.</p>
  252. <p>Referenced by <a class="el" href="group___real_f_f_t.html#ga00e615f5db21736ad5b27fb6146f3fc5">arm_rfft_q15()</a>.</p>
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