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arm__convolution__example_2math__helper_8h.html 36 KB
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  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:aeea2952e70a1040a6efa555564bbeeab"><td class="memItemLeft" align="right" valign="top">float&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="arm__convolution__example_2math__helper_8h.html#aeea2952e70a1040a6efa555564bbeeab">arm_snr_f32</a> (float *pRef, float *pTest, uint32_t buffSize)</td></tr>
    120. 

  120. <tr class="memdesc:aeea2952e70a1040a6efa555564bbeeab"><td class="mdescLeft">&#160;</td><td class="mdescRight">Caluclation of SNR.  <a href="#aeea2952e70a1040a6efa555564bbeeab">More...</a><br/></td></tr>
    121. 

  121. <tr class="separator:aeea2952e70a1040a6efa555564bbeeab"><td class="memSeparator" colspan="2">&#160;</td></tr>
    122. 

  122. <tr class="memitem:a23f94b0fbfed6d620f38e26bc64cf2f8"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="arm__convolution__example_2math__helper_8h.html#a23f94b0fbfed6d620f38e26bc64cf2f8">arm_float_to_q12_20</a> (float *pIn, <a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> *pOut, uint32_t numSamples)</td></tr>
    123. 

  123. <tr class="memdesc:a23f94b0fbfed6d620f38e26bc64cf2f8"><td class="mdescLeft">&#160;</td><td class="mdescRight">Converts float to fixed in q12.20 format.  <a href="#a23f94b0fbfed6d620f38e26bc64cf2f8">More...</a><br/></td></tr>
    124. 

  124. <tr class="separator:a23f94b0fbfed6d620f38e26bc64cf2f8"><td class="memSeparator" colspan="2">&#160;</td></tr>
    125. 

  125. <tr class="memitem:ac8209be1b8081e833c3ec2e85ad2255b"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="arm__convolution__example_2math__helper_8h.html#ac8209be1b8081e833c3ec2e85ad2255b">arm_provide_guard_bits_q15</a> (<a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> *input_buf, uint32_t <a class="el" href="arm__variance__example__f32_8c.html#ab6558f40a619c2502fbc24c880fd4fb0">blockSize</a>, uint32_t guard_bits)</td></tr>
    126. 

  126. <tr class="memdesc:ac8209be1b8081e833c3ec2e85ad2255b"><td class="mdescLeft">&#160;</td><td class="mdescRight">Provide guard bits for Input buffer.  <a href="#ac8209be1b8081e833c3ec2e85ad2255b">More...</a><br/></td></tr>
    127. 

  127. <tr class="separator:ac8209be1b8081e833c3ec2e85ad2255b"><td class="memSeparator" colspan="2">&#160;</td></tr>
    128. 

  128. <tr class="memitem:aead320f821f927000386d9d7d5ad6d27"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="arm__convolution__example_2math__helper_8h.html#aead320f821f927000386d9d7d5ad6d27">arm_provide_guard_bits_q31</a> (<a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> *input_buf, uint32_t <a class="el" href="arm__variance__example__f32_8c.html#ab6558f40a619c2502fbc24c880fd4fb0">blockSize</a>, uint32_t guard_bits)</td></tr>
    129. 

  129. <tr class="memdesc:aead320f821f927000386d9d7d5ad6d27"><td class="mdescLeft">&#160;</td><td class="mdescRight">Provide guard bits for Input buffer.  <a href="#aead320f821f927000386d9d7d5ad6d27">More...</a><br/></td></tr>
    130. 

  130. <tr class="separator:aead320f821f927000386d9d7d5ad6d27"><td class="memSeparator" colspan="2">&#160;</td></tr>
    131. 

  131. <tr class="memitem:a23cdb5202efd9233f4e92b5f22287eac"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="arm__convolution__example_2math__helper_8h.html#a23cdb5202efd9233f4e92b5f22287eac">arm_float_to_q14</a> (float *pIn, <a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> *pOut, uint32_t numSamples)</td></tr>
    132. 

  132. <tr class="memdesc:a23cdb5202efd9233f4e92b5f22287eac"><td class="mdescLeft">&#160;</td><td class="mdescRight">Converts float to fixed q14.  <a href="#a23cdb5202efd9233f4e92b5f22287eac">More...</a><br/></td></tr>
    133. 

  133. <tr class="separator:a23cdb5202efd9233f4e92b5f22287eac"><td class="memSeparator" colspan="2">&#160;</td></tr>
    134. 

  134. <tr class="memitem:a098c587b93469a7a6bcc521d42fdf6f9"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="arm__convolution__example_2math__helper_8h.html#a098c587b93469a7a6bcc521d42fdf6f9">arm_float_to_q29</a> (float *pIn, <a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> *pOut, uint32_t numSamples)</td></tr>
    135. 

  135. <tr class="memdesc:a098c587b93469a7a6bcc521d42fdf6f9"><td class="mdescLeft">&#160;</td><td class="mdescRight">Converts float to fixed q30 format.  <a href="#a098c587b93469a7a6bcc521d42fdf6f9">More...</a><br/></td></tr>
    136. 

  136. <tr class="separator:a098c587b93469a7a6bcc521d42fdf6f9"><td class="memSeparator" colspan="2">&#160;</td></tr>
    137. 

  137. <tr class="memitem:aa1049b3adb14331612bb762237391625"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="arm__convolution__example_2math__helper_8h.html#aa1049b3adb14331612bb762237391625">arm_float_to_q28</a> (float *pIn, <a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> *pOut, uint32_t numSamples)</td></tr>
    138. 

  138. <tr class="memdesc:aa1049b3adb14331612bb762237391625"><td class="mdescLeft">&#160;</td><td class="mdescRight">Converts float to fixed q28 format.  <a href="#aa1049b3adb14331612bb762237391625">More...</a><br/></td></tr>
    139. 

  139. <tr class="separator:aa1049b3adb14331612bb762237391625"><td class="memSeparator" colspan="2">&#160;</td></tr>
    140. 

  140. <tr class="memitem:a16764fdbc174a79f04b07032cf902079"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="arm__convolution__example_2math__helper_8h.html#a16764fdbc174a79f04b07032cf902079">arm_float_to_q30</a> (float *pIn, <a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> *pOut, uint32_t numSamples)</td></tr>
    141. 

  141. <tr class="memdesc:a16764fdbc174a79f04b07032cf902079"><td class="mdescLeft">&#160;</td><td class="mdescRight">Converts float to fixed q30 format.  <a href="#a16764fdbc174a79f04b07032cf902079">More...</a><br/></td></tr>
    142. 

  142. <tr class="separator:a16764fdbc174a79f04b07032cf902079"><td class="memSeparator" colspan="2">&#160;</td></tr>
    143. 

  143. <tr class="memitem:ab9768d92bb94894d8294047bdf76a16a"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="arm__convolution__example_2math__helper_8h.html#ab9768d92bb94894d8294047bdf76a16a">arm_clip_f32</a> (float *pIn, uint32_t numSamples)</td></tr>
    144. 

  144. <tr class="memdesc:ab9768d92bb94894d8294047bdf76a16a"><td class="mdescLeft">&#160;</td><td class="mdescRight">Clip the float values to +/- 1.  <a href="#ab9768d92bb94894d8294047bdf76a16a">More...</a><br/></td></tr>
    145. 

  145. <tr class="separator:ab9768d92bb94894d8294047bdf76a16a"><td class="memSeparator" colspan="2">&#160;</td></tr>
    146. 

  146. <tr class="memitem:a60ff6e0b31a5e9105c7280797e457742"><td class="memItemLeft" align="right" valign="top">uint32_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="arm__convolution__example_2math__helper_8h.html#a60ff6e0b31a5e9105c7280797e457742">arm_calc_guard_bits</a> (uint32_t num_adds)</td></tr>
    147. 

  147. <tr class="memdesc:a60ff6e0b31a5e9105c7280797e457742"><td class="mdescLeft">&#160;</td><td class="mdescRight">Caluclates number of guard bits.  <a href="#a60ff6e0b31a5e9105c7280797e457742">More...</a><br/></td></tr>
    148. 

  148. <tr class="separator:a60ff6e0b31a5e9105c7280797e457742"><td class="memSeparator" colspan="2">&#160;</td></tr>
    149. 

  149. <tr class="memitem:a13580a6ff7a8a68146de727bdf8fba88"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="arm__convolution__example_2math__helper_8h.html#a13580a6ff7a8a68146de727bdf8fba88">arm_apply_guard_bits</a> (<a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> *pIn, uint32_t numSamples, uint32_t guard_bits)</td></tr>
    150. 

  150. <tr class="memdesc:a13580a6ff7a8a68146de727bdf8fba88"><td class="mdescLeft">&#160;</td><td class="mdescRight">Apply guard bits to buffer.  <a href="#a13580a6ff7a8a68146de727bdf8fba88">More...</a><br/></td></tr>
    151. 

  151. <tr class="separator:a13580a6ff7a8a68146de727bdf8fba88"><td class="memSeparator" colspan="2">&#160;</td></tr>
    152. 

  152. <tr class="memitem:a64d5207c035db13cddde479317dd131e"><td class="memItemLeft" align="right" valign="top">uint32_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="arm__convolution__example_2math__helper_8h.html#a64d5207c035db13cddde479317dd131e">arm_compare_fixed_q15</a> (<a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> *pIn, <a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> *pOut, uint32_t numSamples)</td></tr>
    153. 

  153. <tr class="memdesc:a64d5207c035db13cddde479317dd131e"><td class="mdescLeft">&#160;</td><td class="mdescRight">Compare MATLAB Reference Output and ARM Test output.  <a href="#a64d5207c035db13cddde479317dd131e">More...</a><br/></td></tr>
    154. 

  154. <tr class="separator:a64d5207c035db13cddde479317dd131e"><td class="memSeparator" colspan="2">&#160;</td></tr>
    155. 

  155. <tr class="memitem:a32f9f3d19e53161382c5bd39e3df50fb"><td class="memItemLeft" align="right" valign="top">uint32_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="arm__convolution__example_2math__helper_8h.html#a32f9f3d19e53161382c5bd39e3df50fb">arm_compare_fixed_q31</a> (<a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> *pIn, <a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> *pOut, uint32_t numSamples)</td></tr>
    156. 

  156. <tr class="memdesc:a32f9f3d19e53161382c5bd39e3df50fb"><td class="mdescLeft">&#160;</td><td class="mdescRight">Compare MATLAB Reference Output and ARM Test output.  <a href="#a32f9f3d19e53161382c5bd39e3df50fb">More...</a><br/></td></tr>
    157. 

  157. <tr class="separator:a32f9f3d19e53161382c5bd39e3df50fb"><td class="memSeparator" colspan="2">&#160;</td></tr>
    158. 

  158. <tr class="memitem:a7c94faac575a175e824d5f9879c97c68"><td class="memItemLeft" align="right" valign="top">uint32_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="arm__convolution__example_2math__helper_8h.html#a7c94faac575a175e824d5f9879c97c68">arm_calc_2pow</a> (uint32_t guard_bits)</td></tr>
    159. 

  159. <tr class="memdesc:a7c94faac575a175e824d5f9879c97c68"><td class="mdescLeft">&#160;</td><td class="mdescRight">Calculates pow(2, numShifts)  <a href="#a7c94faac575a175e824d5f9879c97c68">More...</a><br/></td></tr>
    160. 

  160. <tr class="separator:a7c94faac575a175e824d5f9879c97c68"><td class="memSeparator" colspan="2">&#160;</td></tr>
    161. 

  161. </table>
    162. 

  162. <h2 class="groupheader">Function Documentation</h2>
    163. 

  163. <a class="anchor" id="a13580a6ff7a8a68146de727bdf8fba88"></a>
    164. 

  164. <div class="memitem">
    165. 

  165. <div class="memproto">
    166. 

  166.       <table class="memname">
    167. 

  167.         <tr>
    168. 

  168.           <td class="memname">void arm_apply_guard_bits </td>
    169. 

  169.           <td>(</td>
    170. 

  170.           <td class="paramtype"><a class="el" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> *&#160;</td>
    171. 

  171.           <td class="paramname"><em>pIn</em>, </td>
    172. 

  172.         </tr>
    173. 

  173.         <tr>
    174. 

  174.           <td class="paramkey"></td>
    175. 

  175.           <td></td>
    176. 

  176.           <td class="paramtype">uint32_t&#160;</td>
    177. 

  177.           <td class="paramname"><em>numSamples</em>, </td>
    178. 

  178.         </tr>
    179. 

  179.         <tr>
    180. 

  180.           <td class="paramkey"></td>
    181. 

  181.           <td></td>
    182. 

  182.           <td class="paramtype">uint32_t&#160;</td>
    183. 

  183.           <td class="paramname"><em>guard_bits</em>&#160;</td>
    184. 

  184.         </tr>
    185. 

  185.         <tr>
    186. 

  186.           <td></td>
    187. 

  187.           <td>)</td>
    188. 

  188.           <td></td><td></td>
    189. 

  189.         </tr>
    190. 

  190.       </table>
    191. 

  191. </div><div class="memdoc">
    192. 

  192. <dl class="params"><dt>Parameters</dt><dd>
    193. 

  193.   <table class="params">
    194. 

  194.     <tr><td class="paramdir">[in,out]</td><td class="paramname">pIn</td><td>pointer to input buffer </td></tr>
    195. 

  195.     <tr><td class="paramdir">[in]</td><td class="paramname">numSamples</td><td>number of samples in the input buffer </td></tr>
    196. 

  196.     <tr><td class="paramdir">[in]</td><td class="paramname">guard_bits</td><td>guard bits </td></tr>
    197. 

  197.   </table>
    198. 

  198.   </dd>
    199. 

  199. </dl>
    200. 

  200. <dl class="section return"><dt>Returns</dt><dd>none </dd></dl>
    201. 

  201. 

  202. </div>
    203. 

  203. </div>
    204. 

  204. <a class="anchor" id="a7c94faac575a175e824d5f9879c97c68"></a>
    205. 

  205. <div class="memitem">
    206. 

  206. <div class="memproto">
    207. 

  207.       <table class="memname">
    208. 

  208.         <tr>
    209. 

  209.           <td class="memname">uint32_t arm_calc_2pow </td>
    210. 

  210.           <td>(</td>
    211. 

  211.           <td class="paramtype">uint32_t&#160;</td>
    212. 

  212.           <td class="paramname"><em>numShifts</em></td><td>)</td>
    213. 

  213.           <td></td>
    214. 

  214.         </tr>
    215. 

  215.       </table>
    216. 

  216. </div><div class="memdoc">
    217. 

  217. <dl class="params"><dt>Parameters</dt><dd>
    218. 

  218.   <table class="params">
    219. 

  219.     <tr><td class="paramdir">[in]</td><td class="paramname">numShifts</td><td>number of shifts </td></tr>
    220. 

  220.   </table>
    221. 

  221.   </dd>
    222. 

  222. </dl>
    223. 

  223. <dl class="section return"><dt>Returns</dt><dd>pow(2, numShifts) </dd></dl>
    224. 

  224. 

  225. </div>
    226. 

  226. </div>
    227. 

  227. <a class="anchor" id="a60ff6e0b31a5e9105c7280797e457742"></a>
    228. 

  228. <div class="memitem">
    229. 

  229. <div class="memproto">
    230. 

  230.       <table class="memname">
    231. 

  231.         <tr>
    232. 

  232.           <td class="memname">uint32_t arm_calc_guard_bits </td>
    233. 

  233.           <td>(</td>
    234. 

  234.           <td class="paramtype">uint32_t&#160;</td>
    235. 

  235.           <td class="paramname"><em>num_adds</em></td><td>)</td>
    236. 

  236.           <td></td>
    237. 

  237.         </tr>
    238. 

  238.       </table>
    239. 

  239. </div><div class="memdoc">
    240. 

  240. <dl class="params"><dt>Parameters</dt><dd>
    241. 

  241.   <table class="params">
    242. 

  242.     <tr><td class="paramdir">[in]</td><td class="paramname">num_adds</td><td>number of additions </td></tr>
    243. 

  243.   </table>
    244. 

  244.   </dd>
    245. 

  245. </dl>
    246. 

  246. <dl class="section return"><dt>Returns</dt><dd>guard bits The function Caluclates the number of guard bits depending on the numtaps </dd></dl>
    247. 

  247. 

  248. </div>
    249. 

  249. </div>
    250. 

  250. <a class="anchor" id="ab9768d92bb94894d8294047bdf76a16a"></a>
    251. 

  251. <div class="memitem">
    252. 

  252. <div class="memproto">
    253. 

  253.       <table class="memname">
    254. 

  254.         <tr>
    255. 

  255.           <td class="memname">void arm_clip_f32 </td>
    256. 

  256.           <td>(</td>
    257. 

  257.           <td class="paramtype">float *&#160;</td>
    258. 

  258.           <td class="paramname"><em>pIn</em>, </td>
    259. 

  259.         </tr>
    260. 

  260.         <tr>
    261. 

  261.           <td class="paramkey"></td>
    262. 

  262.           <td></td>
    263. 

  263.           <td class="paramtype">uint32_t&#160;</td>
    264. 

  264.           <td class="paramname"><em>numSamples</em>&#160;</td>
    265. 

  265.         </tr>
    266. 

  266.         <tr>
    267. 

  267.           <td></td>
    268. 

  268.           <td>)</td>
    269. 

  269.           <td></td><td></td>
    270. 

  270.         </tr>
    271. 

  271.       </table>
    272. 

  272. </div><div class="memdoc">
    273. 

  273. <dl class="params"><dt>Parameters</dt><dd>
    274. 

  274.   <table class="params">
    275. 

  275.     <tr><td class="paramdir">[in,out]</td><td class="paramname">pIn</td><td>input buffer </td></tr>
    276. 

  276.     <tr><td class="paramdir">[in]</td><td class="paramname">numSamples</td><td>number of samples in the buffer </td></tr>
    277. 

  277.   </table>
    278. 

  278.   </dd>
    279. 

  279. </dl>
    280. 

  280. <dl class="section return"><dt>Returns</dt><dd>none The function converts floating point values to fixed point values </dd></dl>
    281. 

  281. 

  282. </div>
    283. 

  283. </div>
    284. 

  284. <a class="anchor" id="a64d5207c035db13cddde479317dd131e"></a>
    285. 

  285. <div class="memitem">
    286. 

  286. <div class="memproto">
    287. 

  287.       <table class="memname">
    288. 

  288.         <tr>
    289. 

  289.           <td class="memname">uint32_t arm_compare_fixed_q15 </td>
    290. 

  290.           <td>(</td>
    291. 

  291.           <td class="paramtype"><a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> *&#160;</td>
    292. 

  292.           <td class="paramname"><em>pIn</em>, </td>
    293. 

  293.         </tr>
    294. 

  294.         <tr>
    295. 

  295.           <td class="paramkey"></td>
    296. 

  296.           <td></td>
    297. 

  297.           <td class="paramtype"><a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> *&#160;</td>
    298. 

  298.           <td class="paramname"><em>pOut</em>, </td>
    299. 

  299.         </tr>
    300. 

  300.         <tr>
    301. 

  301.           <td class="paramkey"></td>
    302. 

  302.           <td></td>
    303. 

  303.           <td class="paramtype">uint32_t&#160;</td>
    304. 

  304.           <td class="paramname"><em>numSamples</em>&#160;</td>
    305. 

  305.         </tr>
    306. 

  306.         <tr>
    307. 

  307.           <td></td>
    308. 

  308.           <td>)</td>
    309. 

  309.           <td></td><td></td>
    310. 

  310.         </tr>
    311. 

  311.       </table>
    312. 

  312. </div><div class="memdoc">
    313. 

  313. <dl class="params"><dt>Parameters</dt><dd>
    314. 

  314.   <table class="params">
    315. 

  315.     <tr><td class="paramdir">[in]</td><td class="paramname">pIn</td><td>Pointer to Ref buffer </td></tr>
    316. 

  316.     <tr><td class="paramdir">[in]</td><td class="paramname">pOut</td><td>Pointer to Test buffer </td></tr>
    317. 

  317.     <tr><td class="paramdir">[in]</td><td class="paramname">numSamples</td><td>number of samples in the buffer </td></tr>
    318. 

  318.   </table>
    319. 

  319.   </dd>
    320. 

  320. </dl>
    321. 

  321. <dl class="section return"><dt>Returns</dt><dd>maximum difference </dd></dl>
    322. 

  322. 

  323. </div>
    324. 

  324. </div>
    325. 

  325. <a class="anchor" id="a32f9f3d19e53161382c5bd39e3df50fb"></a>
    326. 

  326. <div class="memitem">
    327. 

  327. <div class="memproto">
    328. 

  328.       <table class="memname">
    329. 

  329.         <tr>
    330. 

  330.           <td class="memname">uint32_t arm_compare_fixed_q31 </td>
    331. 

  331.           <td>(</td>
    332. 

  332.           <td class="paramtype"><a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> *&#160;</td>
    333. 

  333.           <td class="paramname"><em>pIn</em>, </td>
    334. 

  334.         </tr>
    335. 

  335.         <tr>
    336. 

  336.           <td class="paramkey"></td>
    337. 

  337.           <td></td>
    338. 

  338.           <td class="paramtype"><a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> *&#160;</td>
    339. 

  339.           <td class="paramname"><em>pOut</em>, </td>
    340. 

  340.         </tr>
    341. 

  341.         <tr>
    342. 

  342.           <td class="paramkey"></td>
    343. 

  343.           <td></td>
    344. 

  344.           <td class="paramtype">uint32_t&#160;</td>
    345. 

  345.           <td class="paramname"><em>numSamples</em>&#160;</td>
    346. 

  346.         </tr>
    347. 

  347.         <tr>
    348. 

  348.           <td></td>
    349. 

  349.           <td>)</td>
    350. 

  350.           <td></td><td></td>
    351. 

  351.         </tr>
    352. 

  352.       </table>
    353. 

  353. </div><div class="memdoc">
    354. 

  354. <dl class="params"><dt>Parameters</dt><dd>
    355. 

  355.   <table class="params">
    356. 

  356.     <tr><td class="paramdir">[in]</td><td class="paramname">pIn</td><td>Pointer to Ref buffer </td></tr>
    357. 

  357.     <tr><td class="paramdir">[in]</td><td class="paramname">pOut</td><td>Pointer to Test buffer </td></tr>
    358. 

  358.     <tr><td class="paramdir">[in]</td><td class="paramname">numSamples</td><td>number of samples in the buffer </td></tr>
    359. 

  359.   </table>
    360. 

  360.   </dd>
    361. 

  361. </dl>
    362. 

  362. <dl class="section return"><dt>Returns</dt><dd>maximum difference </dd></dl>
    363. 

  363. 

  364. </div>
    365. 

  365. </div>
    366. 

  366. <a class="anchor" id="a23f94b0fbfed6d620f38e26bc64cf2f8"></a>
    367. 

  367. <div class="memitem">
    368. 

  368. <div class="memproto">
    369. 

  369.       <table class="memname">
    370. 

  370.         <tr>
    371. 

  371.           <td class="memname">void arm_float_to_q12_20 </td>
    372. 

  372.           <td>(</td>
    373. 

  373.           <td class="paramtype">float *&#160;</td>
    374. 

  374.           <td class="paramname"><em>pIn</em>, </td>
    375. 

  375.         </tr>
    376. 

  376.         <tr>
    377. 

  377.           <td class="paramkey"></td>
    378. 

  378.           <td></td>
    379. 

  379.           <td class="paramtype"><a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> *&#160;</td>
    380. 

  380.           <td class="paramname"><em>pOut</em>, </td>
    381. 

  381.         </tr>
    382. 

  382.         <tr>
    383. 

  383.           <td class="paramkey"></td>
    384. 

  384.           <td></td>
    385. 

  385.           <td class="paramtype">uint32_t&#160;</td>
    386. 

  386.           <td class="paramname"><em>numSamples</em>&#160;</td>
    387. 

  387.         </tr>
    388. 

  388.         <tr>
    389. 

  389.           <td></td>
    390. 

  390.           <td>)</td>
    391. 

  391.           <td></td><td></td>
    392. 

  392.         </tr>
    393. 

  393.       </table>
    394. 

  394. </div><div class="memdoc">
    395. 

  395. <dl class="params"><dt>Parameters</dt><dd>
    396. 

  396.   <table class="params">
    397. 

  397.     <tr><td class="paramdir">[in]</td><td class="paramname">pIn</td><td>pointer to input buffer </td></tr>
    398. 

  398.     <tr><td class="paramdir">[out]</td><td class="paramname">pOut</td><td>pointer to outputbuffer </td></tr>
    399. 

  399.     <tr><td class="paramdir">[in]</td><td class="paramname">numSamples</td><td>number of samples in the input buffer </td></tr>
    400. 

  400.   </table>
    401. 

  401.   </dd>
    402. 

  402. </dl>
    403. 

  403. <dl class="section return"><dt>Returns</dt><dd>none The function converts floating point values to fixed point(q12.20) values </dd></dl>
    404. 

  404. 

  405. </div>
    406. 

  406. </div>
    407. 

  407. <a class="anchor" id="a23cdb5202efd9233f4e92b5f22287eac"></a>
    408. 

  408. <div class="memitem">
    409. 

  409. <div class="memproto">
    410. 

  410.       <table class="memname">
    411. 

  411.         <tr>
    412. 

  412.           <td class="memname">void arm_float_to_q14 </td>
    413. 

  413.           <td>(</td>
    414. 

  414.           <td class="paramtype">float *&#160;</td>
    415. 

  415.           <td class="paramname"><em>pIn</em>, </td>
    416. 

  416.         </tr>
    417. 

  417.         <tr>
    418. 

  418.           <td class="paramkey"></td>
    419. 

  419.           <td></td>
    420. 

  420.           <td class="paramtype"><a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> *&#160;</td>
    421. 

  421.           <td class="paramname"><em>pOut</em>, </td>
    422. 

  422.         </tr>
    423. 

  423.         <tr>
    424. 

  424.           <td class="paramkey"></td>
    425. 

  425.           <td></td>
    426. 

  426.           <td class="paramtype">uint32_t&#160;</td>
    427. 

  427.           <td class="paramname"><em>numSamples</em>&#160;</td>
    428. 

  428.         </tr>
    429. 

  429.         <tr>
    430. 

  430.           <td></td>
    431. 

  431.           <td>)</td>
    432. 

  432.           <td></td><td></td>
    433. 

  433.         </tr>
    434. 

  434.       </table>
    435. 

  435. </div><div class="memdoc">
    436. 

  436. <dl class="params"><dt>Parameters</dt><dd>
    437. 

  437.   <table class="params">
    438. 

  438.     <tr><td class="paramdir">[in]</td><td class="paramname">pIn</td><td>pointer to input buffer </td></tr>
    439. 

  439.     <tr><td class="paramdir">[out]</td><td class="paramname">pOut</td><td>pointer to output buffer </td></tr>
    440. 

  440.     <tr><td class="paramdir">[in]</td><td class="paramname">numSamples</td><td>number of samples in the buffer </td></tr>
    441. 

  441.   </table>
    442. 

  442.   </dd>
    443. 

  443. </dl>
    444. 

  444. <dl class="section return"><dt>Returns</dt><dd>none The function converts floating point values to fixed point values </dd></dl>
    445. 

  445. 

  446. </div>
    447. 

  447. </div>
    448. 

  448. <a class="anchor" id="aa1049b3adb14331612bb762237391625"></a>
    449. 

  449. <div class="memitem">
    450. 

  450. <div class="memproto">
    451. 

  451.       <table class="memname">
    452. 

  452.         <tr>
    453. 

  453.           <td class="memname">void arm_float_to_q28 </td>
    454. 

  454.           <td>(</td>
    455. 

  455.           <td class="paramtype">float *&#160;</td>
    456. 

  456.           <td class="paramname"><em>pIn</em>, </td>
    457. 

  457.         </tr>
    458. 

  458.         <tr>
    459. 

  459.           <td class="paramkey"></td>
    460. 

  460.           <td></td>
    461. 

  461.           <td class="paramtype"><a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> *&#160;</td>
    462. 

  462.           <td class="paramname"><em>pOut</em>, </td>
    463. 

  463.         </tr>
    464. 

  464.         <tr>
    465. 

  465.           <td class="paramkey"></td>
    466. 

  466.           <td></td>
    467. 

  467.           <td class="paramtype">uint32_t&#160;</td>
    468. 

  468.           <td class="paramname"><em>numSamples</em>&#160;</td>
    469. 

  469.         </tr>
    470. 

  470.         <tr>
    471. 

  471.           <td></td>
    472. 

  472.           <td>)</td>
    473. 

  473.           <td></td><td></td>
    474. 

  474.         </tr>
    475. 

  475.       </table>
    476. 

  476. </div><div class="memdoc">
    477. 

  477. <dl class="params"><dt>Parameters</dt><dd>
    478. 

  478.   <table class="params">
    479. 

  479.     <tr><td class="paramdir">[in]</td><td class="paramname">pIn</td><td>pointer to input buffer </td></tr>
    480. 

  480.     <tr><td class="paramdir">[out]</td><td class="paramname">pOut</td><td>pointer to output buffer </td></tr>
    481. 

  481.     <tr><td class="paramdir">[in]</td><td class="paramname">numSamples</td><td>number of samples in the buffer </td></tr>
    482. 

  482.   </table>
    483. 

  483.   </dd>
    484. 

  484. </dl>
    485. 

  485. <dl class="section return"><dt>Returns</dt><dd>none The function converts floating point values to fixed point values </dd></dl>
    486. 

  486. 

  487. </div>
    488. 

  488. </div>
    489. 

  489. <a class="anchor" id="a098c587b93469a7a6bcc521d42fdf6f9"></a>
    490. 

  490. <div class="memitem">
    491. 

  491. <div class="memproto">
    492. 

  492.       <table class="memname">
    493. 

  493.         <tr>
    494. 

  494.           <td class="memname">void arm_float_to_q29 </td>
    495. 

  495.           <td>(</td>
    496. 

  496.           <td class="paramtype">float *&#160;</td>
    497. 

  497.           <td class="paramname"><em>pIn</em>, </td>
    498. 

  498.         </tr>
    499. 

  499.         <tr>
    500. 

  500.           <td class="paramkey"></td>
    501. 

  501.           <td></td>
    502. 

  502.           <td class="paramtype"><a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> *&#160;</td>
    503. 

  503.           <td class="paramname"><em>pOut</em>, </td>
    504. 

  504.         </tr>
    505. 

  505.         <tr>
    506. 

  506.           <td class="paramkey"></td>
    507. 

  507.           <td></td>
    508. 

  508.           <td class="paramtype">uint32_t&#160;</td>
    509. 

  509.           <td class="paramname"><em>numSamples</em>&#160;</td>
    510. 

  510.         </tr>
    511. 

  511.         <tr>
    512. 

  512.           <td></td>
    513. 

  513.           <td>)</td>
    514. 

  514.           <td></td><td></td>
    515. 

  515.         </tr>
    516. 

  516.       </table>
    517. 

  517. </div><div class="memdoc">
    518. 

  518. <dl class="params"><dt>Parameters</dt><dd>
    519. 

  519.   <table class="params">
    520. 

  520.     <tr><td class="paramdir">[in]</td><td class="paramname">pIn</td><td>pointer to input buffer </td></tr>
    521. 

  521.     <tr><td class="paramdir">[out]</td><td class="paramname">pOut</td><td>pointer to output buffer </td></tr>
    522. 

  522.     <tr><td class="paramdir">[in]</td><td class="paramname">numSamples</td><td>number of samples in the buffer </td></tr>
    523. 

  523.   </table>
    524. 

  524.   </dd>
    525. 

  525. </dl>
    526. 

  526. <dl class="section return"><dt>Returns</dt><dd>none The function converts floating point values to fixed point values </dd></dl>
    527. 

  527. 

  528. </div>
    529. 

  529. </div>
    530. 

  530. <a class="anchor" id="a16764fdbc174a79f04b07032cf902079"></a>
    531. 

  531. <div class="memitem">
    532. 

  532. <div class="memproto">
    533. 

  533.       <table class="memname">
    534. 

  534.         <tr>
    535. 

  535.           <td class="memname">void arm_float_to_q30 </td>
    536. 

  536.           <td>(</td>
    537. 

  537.           <td class="paramtype">float *&#160;</td>
    538. 

  538.           <td class="paramname"><em>pIn</em>, </td>
    539. 

  539.         </tr>
    540. 

  540.         <tr>
    541. 

  541.           <td class="paramkey"></td>
    542. 

  542.           <td></td>
    543. 

  543.           <td class="paramtype"><a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> *&#160;</td>
    544. 

  544.           <td class="paramname"><em>pOut</em>, </td>
    545. 

  545.         </tr>
    546. 

  546.         <tr>
    547. 

  547.           <td class="paramkey"></td>
    548. 

  548.           <td></td>
    549. 

  549.           <td class="paramtype">uint32_t&#160;</td>
    550. 

  550.           <td class="paramname"><em>numSamples</em>&#160;</td>
    551. 

  551.         </tr>
    552. 

  552.         <tr>
    553. 

  553.           <td></td>
    554. 

  554.           <td>)</td>
    555. 

  555.           <td></td><td></td>
    556. 

  556.         </tr>
    557. 

  557.       </table>
    558. 

  558. </div><div class="memdoc">
    559. 

  559. <dl class="params"><dt>Parameters</dt><dd>
    560. 

  560.   <table class="params">
    561. 

  561.     <tr><td class="paramdir">[in]</td><td class="paramname">pIn</td><td>pointer to input buffer </td></tr>
    562. 

  562.     <tr><td class="paramdir">[out]</td><td class="paramname">pOut</td><td>pointer to output buffer </td></tr>
    563. 

  563.     <tr><td class="paramdir">[in]</td><td class="paramname">numSamples</td><td>number of samples in the buffer </td></tr>
    564. 

  564.   </table>
    565. 

  565.   </dd>
    566. 

  566. </dl>
    567. 

  567. <dl class="section return"><dt>Returns</dt><dd>none The function converts floating point values to fixed point values </dd></dl>
    568. 

  568. 

  569. </div>
    570. 

  570. </div>
    571. 

  571. <a class="anchor" id="ac8209be1b8081e833c3ec2e85ad2255b"></a>
    572. 

  572. <div class="memitem">
    573. 

  573. <div class="memproto">
    574. 

  574.       <table class="memname">
    575. 

  575.         <tr>
    576. 

  576.           <td class="memname">void arm_provide_guard_bits_q15 </td>
    577. 

  577.           <td>(</td>
    578. 

  578.           <td class="paramtype"><a class="el" href="arm__math_8h.html#ab5a8fb21a5b3b983d5f54f31614052ea">q15_t</a> *&#160;</td>
    579. 

  579.           <td class="paramname"><em>input_buf</em>, </td>
    580. 

  580.         </tr>
    581. 

  581.         <tr>
    582. 

  582.           <td class="paramkey"></td>
    583. 

  583.           <td></td>
    584. 

  584.           <td class="paramtype">uint32_t&#160;</td>
    585. 

  585.           <td class="paramname"><em>blockSize</em>, </td>
    586. 

  586.         </tr>
    587. 

  587.         <tr>
    588. 

  588.           <td class="paramkey"></td>
    589. 

  589.           <td></td>
    590. 

  590.           <td class="paramtype">uint32_t&#160;</td>
    591. 

  591.           <td class="paramname"><em>guard_bits</em>&#160;</td>
    592. 

  592.         </tr>
    593. 

  593.         <tr>
    594. 

  594.           <td></td>
    595. 

  595.           <td>)</td>
    596. 

  596.           <td></td><td></td>
    597. 

  597.         </tr>
    598. 

  598.       </table>
    599. 

  599. </div><div class="memdoc">
    600. 

  600. <dl class="params"><dt>Parameters</dt><dd>
    601. 

  601.   <table class="params">
    602. 

  602.     <tr><td class="paramdir">[in,out]</td><td class="paramname">input_buf</td><td>Pointer to input buffer </td></tr>
    603. 

  603.     <tr><td class="paramdir">[in]</td><td class="paramname">blockSize</td><td>block Size </td></tr>
    604. 

  604.     <tr><td class="paramdir">[in]</td><td class="paramname">guard_bits</td><td>guard bits </td></tr>
    605. 

  605.   </table>
    606. 

  606.   </dd>
    607. 

  607. </dl>
    608. 

  608. <dl class="section return"><dt>Returns</dt><dd>none The function Provides the guard bits for the buffer to avoid overflow </dd></dl>
    609. 

  609. 

  610. </div>
    611. 

  611. </div>
    612. 

  612. <a class="anchor" id="aead320f821f927000386d9d7d5ad6d27"></a>
    613. 

  613. <div class="memitem">
    614. 

  614. <div class="memproto">
    615. 

  615.       <table class="memname">
    616. 

  616.         <tr>
    617. 

  617.           <td class="memname">void arm_provide_guard_bits_q31 </td>
    618. 

  618.           <td>(</td>
    619. 

  619.           <td class="paramtype"><a class="el" href="arm__math_8h.html#adc89a3547f5324b7b3b95adec3806bc0">q31_t</a> *&#160;</td>
    620. 

  620.           <td class="paramname"><em>input_buf</em>, </td>
    621. 

  621.         </tr>
    622. 

  622.         <tr>
    623. 

  623.           <td class="paramkey"></td>
    624. 

  624.           <td></td>
    625. 

  625.           <td class="paramtype">uint32_t&#160;</td>
    626. 

  626.           <td class="paramname"><em>blockSize</em>, </td>
    627. 

  627.         </tr>
    628. 

  628.         <tr>
    629. 

  629.           <td class="paramkey"></td>
    630. 

  630.           <td></td>
    631. 

  631.           <td class="paramtype">uint32_t&#160;</td>
    632. 

  632.           <td class="paramname"><em>guard_bits</em>&#160;</td>
    633. 

  633.         </tr>
    634. 

  634.         <tr>
    635. 

  635.           <td></td>
    636. 

  636.           <td>)</td>
    637. 

  637.           <td></td><td></td>
    638. 

  638.         </tr>
    639. 

  639.       </table>
    640. 

  640. </div><div class="memdoc">
    641. 

  641. <dl class="params"><dt>Parameters</dt><dd>
    642. 

  642.   <table class="params">
    643. 

  643.     <tr><td class="paramdir">[in,out]</td><td class="paramname">input_buf</td><td>Pointer to input buffer </td></tr>
    644. 

  644.     <tr><td class="paramdir">[in]</td><td class="paramname">blockSize</td><td>block Size </td></tr>
    645. 

  645.     <tr><td class="paramdir">[in]</td><td class="paramname">guard_bits</td><td>guard bits </td></tr>
    646. 

  646.   </table>
    647. 

  647.   </dd>
    648. 

  648. </dl>
    649. 

  649. <dl class="section return"><dt>Returns</dt><dd>none The function Provides the guard bits for the buffer to avoid overflow </dd></dl>
    650. 

  650. 

  651. </div>
    652. 

  652. </div>
    653. 

  653. <a class="anchor" id="aeea2952e70a1040a6efa555564bbeeab"></a>
    654. 

  654. <div class="memitem">
    655. 

  655. <div class="memproto">
    656. 

  656.       <table class="memname">
    657. 

  657.         <tr>
    658. 

  658.           <td class="memname">float arm_snr_f32 </td>
    659. 

  659.           <td>(</td>
    660. 

  660.           <td class="paramtype">float *&#160;</td>
    661. 

  661.           <td class="paramname"><em>pRef</em>, </td>
    662. 

  662.         </tr>
    663. 

  663.         <tr>
    664. 

  664.           <td class="paramkey"></td>
    665. 

  665.           <td></td>
    666. 

  666.           <td class="paramtype">float *&#160;</td>
    667. 

  667.           <td class="paramname"><em>pTest</em>, </td>
    668. 

  668.         </tr>
    669. 

  669.         <tr>
    670. 

  670.           <td class="paramkey"></td>
    671. 

  671.           <td></td>
    672. 

  672.           <td class="paramtype">uint32_t&#160;</td>
    673. 

  673.           <td class="paramname"><em>buffSize</em>&#160;</td>
    674. 

  674.         </tr>
    675. 

  675.         <tr>
    676. 

  676.           <td></td>
    677. 

  677.           <td>)</td>
    678. 

  678.           <td></td><td></td>
    679. 

  679.         </tr>
    680. 

  680.       </table>
    681. 

  681. </div><div class="memdoc">
    682. 

  682. <dl class="params"><dt>Parameters</dt><dd>
    683. 

  683.   <table class="params">
    684. 

  684.     <tr><td class="paramdir">[in]</td><td class="paramname">pRef</td><td>Pointer to the reference buffer </td></tr>
    685. 

  685.     <tr><td class="paramdir">[in]</td><td class="paramname">pTest</td><td>Pointer to the test buffer </td></tr>
    686. 

  686.     <tr><td class="paramdir">[in]</td><td class="paramname">buffSize</td><td>total number of samples </td></tr>
    687. 

  687.   </table>
    688. 

  688.   </dd>
    689. 

  689. </dl>
    690. 

  690. <dl class="section return"><dt>Returns</dt><dd>SNR The function Caluclates signal to noise ratio for the reference output and test output </dd></dl>
    691. 

  691. 

  692. </div>
    693. 

  693. </div>
    694. 

  694. </div><!-- contents -->
    695. 

  695. </div><!-- doc-content -->
    696. 

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    699. 

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    700. 

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