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  108. <div class="summary">
  109. <a href="#func-members">Functions</a> </div>
  110. <div class="headertitle">
  111. <div class="title">Vector Multiplication</div> </div>
  112. <div class="ingroups"><a class="el" href="group__group_math.html">Basic Math Functions</a></div></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:gaca3f0b8227da431ab29225b88888aa32"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group___basic_mult.html#gaca3f0b8227da431ab29225b88888aa32">arm_mult_f32</a> (<a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> *pSrcA, <a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> *pSrcB, <a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> *pDst, uint32_t <a class="el" href="arm__variance__example__f32_8c.html#ab6558f40a619c2502fbc24c880fd4fb0">blockSize</a>)</td></tr>
  118. <tr class="memdesc:gaca3f0b8227da431ab29225b88888aa32"><td class="mdescLeft">&#160;</td><td class="mdescRight">Floating-point vector multiplication. <a href="#gaca3f0b8227da431ab29225b88888aa32"></a><br/></td></tr>
  119. <tr class="separator:gaca3f0b8227da431ab29225b88888aa32"><td class="memSeparator" colspan="2">&#160;</td></tr>
  120. <tr class="memitem:gafb0778d27ed98a2a6f2ecb7d48cc8c75"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group___basic_mult.html#gafb0778d27ed98a2a6f2ecb7d48cc8c75">arm_mult_q15</a> (<a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> *pSrcA, <a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> *pSrcB, <a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> *pDst, uint32_t <a class="el" href="arm__variance__example__f32_8c.html#ab6558f40a619c2502fbc24c880fd4fb0">blockSize</a>)</td></tr>
  121. <tr class="memdesc:gafb0778d27ed98a2a6f2ecb7d48cc8c75"><td class="mdescLeft">&#160;</td><td class="mdescRight">Q15 vector multiplication. <a href="#gafb0778d27ed98a2a6f2ecb7d48cc8c75"></a><br/></td></tr>
  122. <tr class="separator:gafb0778d27ed98a2a6f2ecb7d48cc8c75"><td class="memSeparator" colspan="2">&#160;</td></tr>
  123. <tr class="memitem:ga3528c0f54a0607acc603f0490d3ca6c6"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group___basic_mult.html#ga3528c0f54a0607acc603f0490d3ca6c6">arm_mult_q31</a> (<a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> *pSrcA, <a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> *pSrcB, <a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> *pDst, uint32_t <a class="el" href="arm__variance__example__f32_8c.html#ab6558f40a619c2502fbc24c880fd4fb0">blockSize</a>)</td></tr>
  124. <tr class="memdesc:ga3528c0f54a0607acc603f0490d3ca6c6"><td class="mdescLeft">&#160;</td><td class="mdescRight">Q31 vector multiplication. <a href="#ga3528c0f54a0607acc603f0490d3ca6c6"></a><br/></td></tr>
  125. <tr class="separator:ga3528c0f54a0607acc603f0490d3ca6c6"><td class="memSeparator" colspan="2">&#160;</td></tr>
  126. <tr class="memitem:ga16677275ed83ff0878da531e875c27ef"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="group___basic_mult.html#ga16677275ed83ff0878da531e875c27ef">arm_mult_q7</a> (<a class="el" href="arm__math_8h.html#ae541b6f232c305361e9b416fc9eed263">q7_t</a> *pSrcA, <a class="el" href="arm__math_8h.html#ae541b6f232c305361e9b416fc9eed263">q7_t</a> *pSrcB, <a class="el" href="arm__math_8h.html#ae541b6f232c305361e9b416fc9eed263">q7_t</a> *pDst, uint32_t <a class="el" href="arm__variance__example__f32_8c.html#ab6558f40a619c2502fbc24c880fd4fb0">blockSize</a>)</td></tr>
  127. <tr class="memdesc:ga16677275ed83ff0878da531e875c27ef"><td class="mdescLeft">&#160;</td><td class="mdescRight">Q7 vector multiplication. <a href="#ga16677275ed83ff0878da531e875c27ef"></a><br/></td></tr>
  128. <tr class="separator:ga16677275ed83ff0878da531e875c27ef"><td class="memSeparator" colspan="2">&#160;</td></tr>
  129. </table>
  130. <a name="details" id="details"></a><h2 class="groupheader">Description</h2>
  131. <p>Element-by-element multiplication of two vectors.</p>
  132. <pre>
  133. pDst[n] = pSrcA[n] * pSrcB[n], 0 &lt;= n &lt; blockSize.
  134. </pre><p>There are separate functions for floating-point, Q7, Q15, and Q31 data types. </p>
  135. <h2 class="groupheader">Function Documentation</h2>
  136. <a class="anchor" id="gaca3f0b8227da431ab29225b88888aa32"></a>
  137. <div class="memitem">
  138. <div class="memproto">
  139. <table class="memname">
  140. <tr>
  141. <td class="memname">void arm_mult_f32 </td>
  142. <td>(</td>
  143. <td class="paramtype"><a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> *&#160;</td>
  144. <td class="paramname"><em>pSrcA</em>, </td>
  145. </tr>
  146. <tr>
  147. <td class="paramkey"></td>
  148. <td></td>
  149. <td class="paramtype"><a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> *&#160;</td>
  150. <td class="paramname"><em>pSrcB</em>, </td>
  151. </tr>
  152. <tr>
  153. <td class="paramkey"></td>
  154. <td></td>
  155. <td class="paramtype"><a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> *&#160;</td>
  156. <td class="paramname"><em>pDst</em>, </td>
  157. </tr>
  158. <tr>
  159. <td class="paramkey"></td>
  160. <td></td>
  161. <td class="paramtype">uint32_t&#160;</td>
  162. <td class="paramname"><em>blockSize</em>&#160;</td>
  163. </tr>
  164. <tr>
  165. <td></td>
  166. <td>)</td>
  167. <td></td><td></td>
  168. </tr>
  169. </table>
  170. </div><div class="memdoc">
  171. <dl class="params"><dt>Parameters</dt><dd>
  172. <table class="params">
  173. <tr><td class="paramdir">[in]</td><td class="paramname">*pSrcA</td><td>points to the first input vector </td></tr>
  174. <tr><td class="paramdir">[in]</td><td class="paramname">*pSrcB</td><td>points to the second input vector </td></tr>
  175. <tr><td class="paramdir">[out]</td><td class="paramname">*pDst</td><td>points to the output vector </td></tr>
  176. <tr><td class="paramdir">[in]</td><td class="paramname">blockSize</td><td>number of samples in each vector </td></tr>
  177. </table>
  178. </dd>
  179. </dl>
  180. <dl class="section return"><dt>Returns</dt><dd>none. </dd></dl>
  181. <dl><dt><b>Examples: </b></dt><dd><a class="el" href="arm_dotproduct_example_f32_8c-example.html#a8">arm_dotproduct_example_f32.c</a>, <a class="el" href="arm_sin_cos_example_f32_8c-example.html#a13">arm_sin_cos_example_f32.c</a>, and <a class="el" href="arm_variance_example_f32_8c-example.html#a13">arm_variance_example_f32.c</a>.</dd>
  182. </dl>
  183. <p>References <a class="el" href="arm__fir__example__f32_8c.html#ab6558f40a619c2502fbc24c880fd4fb0">blockSize</a>.</p>
  184. <p>Referenced by <a class="el" href="group___d_c_t4___i_d_c_t4.html#gafd538d68886848bc090ec2b0d364cc81">arm_dct4_f32()</a>, and <a class="el" href="_a_r_m_2arm__dotproduct__example__f32_8c.html#a52d2cba30e6946c95578be946ac12a65">main()</a>.</p>
  185. </div>
  186. </div>
  187. <a class="anchor" id="gafb0778d27ed98a2a6f2ecb7d48cc8c75"></a>
  188. <div class="memitem">
  189. <div class="memproto">
  190. <table class="memname">
  191. <tr>
  192. <td class="memname">void arm_mult_q15 </td>
  193. <td>(</td>
  194. <td class="paramtype"><a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> *&#160;</td>
  195. <td class="paramname"><em>pSrcA</em>, </td>
  196. </tr>
  197. <tr>
  198. <td class="paramkey"></td>
  199. <td></td>
  200. <td class="paramtype"><a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> *&#160;</td>
  201. <td class="paramname"><em>pSrcB</em>, </td>
  202. </tr>
  203. <tr>
  204. <td class="paramkey"></td>
  205. <td></td>
  206. <td class="paramtype"><a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> *&#160;</td>
  207. <td class="paramname"><em>pDst</em>, </td>
  208. </tr>
  209. <tr>
  210. <td class="paramkey"></td>
  211. <td></td>
  212. <td class="paramtype">uint32_t&#160;</td>
  213. <td class="paramname"><em>blockSize</em>&#160;</td>
  214. </tr>
  215. <tr>
  216. <td></td>
  217. <td>)</td>
  218. <td></td><td></td>
  219. </tr>
  220. </table>
  221. </div><div class="memdoc">
  222. <dl class="params"><dt>Parameters</dt><dd>
  223. <table class="params">
  224. <tr><td class="paramdir">[in]</td><td class="paramname">*pSrcA</td><td>points to the first input vector </td></tr>
  225. <tr><td class="paramdir">[in]</td><td class="paramname">*pSrcB</td><td>points to the second input vector </td></tr>
  226. <tr><td class="paramdir">[out]</td><td class="paramname">*pDst</td><td>points to the output vector </td></tr>
  227. <tr><td class="paramdir">[in]</td><td class="paramname">blockSize</td><td>number of samples in each vector </td></tr>
  228. </table>
  229. </dd>
  230. </dl>
  231. <dl class="section return"><dt>Returns</dt><dd>none.</dd></dl>
  232. <p><b>Scaling and Overflow Behavior:</b> </p>
  233. <dl class="section user"><dt></dt><dd>The function uses saturating arithmetic. Results outside of the allowable Q15 range [0x8000 0x7FFF] will be saturated. </dd></dl>
  234. <p>References <a class="el" href="arm__math_8h.html#a9de2e0a5785be82866bcb96012282248">__SIMD32</a>, and <a class="el" href="arm__fir__example__f32_8c.html#ab6558f40a619c2502fbc24c880fd4fb0">blockSize</a>.</p>
  235. <p>Referenced by <a class="el" href="group___d_c_t4___i_d_c_t4.html#ga114cb9635059f678df291fcc887aaf2b">arm_dct4_q15()</a>.</p>
  236. </div>
  237. </div>
  238. <a class="anchor" id="ga3528c0f54a0607acc603f0490d3ca6c6"></a>
  239. <div class="memitem">
  240. <div class="memproto">
  241. <table class="memname">
  242. <tr>
  243. <td class="memname">void arm_mult_q31 </td>
  244. <td>(</td>
  245. <td class="paramtype"><a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> *&#160;</td>
  246. <td class="paramname"><em>pSrcA</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>pSrcB</em>, </td>
  253. </tr>
  254. <tr>
  255. <td class="paramkey"></td>
  256. <td></td>
  257. <td class="paramtype"><a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> *&#160;</td>
  258. <td class="paramname"><em>pDst</em>, </td>
  259. </tr>
  260. <tr>
  261. <td class="paramkey"></td>
  262. <td></td>
  263. <td class="paramtype">uint32_t&#160;</td>
  264. <td class="paramname"><em>blockSize</em>&#160;</td>
  265. </tr>
  266. <tr>
  267. <td></td>
  268. <td>)</td>
  269. <td></td><td></td>
  270. </tr>
  271. </table>
  272. </div><div class="memdoc">
  273. <dl class="params"><dt>Parameters</dt><dd>
  274. <table class="params">
  275. <tr><td class="paramdir">[in]</td><td class="paramname">*pSrcA</td><td>points to the first input vector </td></tr>
  276. <tr><td class="paramdir">[in]</td><td class="paramname">*pSrcB</td><td>points to the second input vector </td></tr>
  277. <tr><td class="paramdir">[out]</td><td class="paramname">*pDst</td><td>points to the output vector </td></tr>
  278. <tr><td class="paramdir">[in]</td><td class="paramname">blockSize</td><td>number of samples in each vector </td></tr>
  279. </table>
  280. </dd>
  281. </dl>
  282. <dl class="section return"><dt>Returns</dt><dd>none.</dd></dl>
  283. <p><b>Scaling and Overflow Behavior:</b> </p>
  284. <dl class="section user"><dt></dt><dd>The function uses saturating arithmetic. Results outside of the allowable Q31 range[0x80000000 0x7FFFFFFF] will be saturated. </dd></dl>
  285. <p>References <a class="el" href="arm__fir__example__f32_8c.html#ab6558f40a619c2502fbc24c880fd4fb0">blockSize</a>, and <a class="el" href="arm__math_8h.html#ad7373e53d3c2e1adfeafc8c2e9720b5c">clip_q63_to_q31()</a>.</p>
  286. <p>Referenced by <a class="el" href="group___d_c_t4___i_d_c_t4.html#gad04d0baab6ed081d8e8afe02538eb80b">arm_dct4_q31()</a>.</p>
  287. </div>
  288. </div>
  289. <a class="anchor" id="ga16677275ed83ff0878da531e875c27ef"></a>
  290. <div class="memitem">
  291. <div class="memproto">
  292. <table class="memname">
  293. <tr>
  294. <td class="memname">void arm_mult_q7 </td>
  295. <td>(</td>
  296. <td class="paramtype"><a class="el" href="arm__math_8h.html#ae541b6f232c305361e9b416fc9eed263">q7_t</a> *&#160;</td>
  297. <td class="paramname"><em>pSrcA</em>, </td>
  298. </tr>
  299. <tr>
  300. <td class="paramkey"></td>
  301. <td></td>
  302. <td class="paramtype"><a class="el" href="arm__math_8h.html#ae541b6f232c305361e9b416fc9eed263">q7_t</a> *&#160;</td>
  303. <td class="paramname"><em>pSrcB</em>, </td>
  304. </tr>
  305. <tr>
  306. <td class="paramkey"></td>
  307. <td></td>
  308. <td class="paramtype"><a class="el" href="arm__math_8h.html#ae541b6f232c305361e9b416fc9eed263">q7_t</a> *&#160;</td>
  309. <td class="paramname"><em>pDst</em>, </td>
  310. </tr>
  311. <tr>
  312. <td class="paramkey"></td>
  313. <td></td>
  314. <td class="paramtype">uint32_t&#160;</td>
  315. <td class="paramname"><em>blockSize</em>&#160;</td>
  316. </tr>
  317. <tr>
  318. <td></td>
  319. <td>)</td>
  320. <td></td><td></td>
  321. </tr>
  322. </table>
  323. </div><div class="memdoc">
  324. <dl class="params"><dt>Parameters</dt><dd>
  325. <table class="params">
  326. <tr><td class="paramdir">[in]</td><td class="paramname">*pSrcA</td><td>points to the first input vector </td></tr>
  327. <tr><td class="paramdir">[in]</td><td class="paramname">*pSrcB</td><td>points to the second input vector </td></tr>
  328. <tr><td class="paramdir">[out]</td><td class="paramname">*pDst</td><td>points to the output vector </td></tr>
  329. <tr><td class="paramdir">[in]</td><td class="paramname">blockSize</td><td>number of samples in each vector </td></tr>
  330. </table>
  331. </dd>
  332. </dl>
  333. <dl class="section return"><dt>Returns</dt><dd>none.</dd></dl>
  334. <p><b>Scaling and Overflow Behavior:</b> </p>
  335. <dl class="section user"><dt></dt><dd>The function uses saturating arithmetic. Results outside of the allowable Q7 range [0x80 0x7F] will be saturated. </dd></dl>
  336. <p>References <a class="el" href="arm__math_8h.html#a3ebff224ad44c217fde9f530342e2960">__PACKq7</a>, <a class="el" href="arm__math_8h.html#a9de2e0a5785be82866bcb96012282248">__SIMD32</a>, and <a class="el" href="arm__fir__example__f32_8c.html#ab6558f40a619c2502fbc24c880fd4fb0">blockSize</a>.</p>
  337. </div>
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