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  50 <h1>arm_matrix_example_f32.c</h1>  </div>
  51 </div>
  52 <div class="contents">
  53 <a href="arm__matrix__example__f32_8c.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/* ---------------------------------------------------------------------- </span>
  54 <a name="l00002"></a>00002 <span class="comment">* Copyright (C) 2010 ARM Limited. All rights reserved.   </span>
  55 <a name="l00003"></a>00003 <span class="comment">*  </span>
  56 <a name="l00004"></a>00004 <span class="comment">* $Date:        29. November 2010  </span>
  57 <a name="l00005"></a>00005 <span class="comment">* $Revision:    V1.0.3</span>
  58 <a name="l00006"></a>00006 <span class="comment">*  </span>
  59 <a name="l00007"></a>00007 <span class="comment">* Project:      CMSIS DSP Library  </span>
  60 <a name="l00008"></a>00008 <span class="comment">* Title:        arm_matrix_example_f32.c          </span>
  61 <a name="l00009"></a>00009 <span class="comment">*  </span>
  62 <a name="l00010"></a>00010 <span class="comment">* Description:  Example code demonstrating least square fit to data  </span>
  63 <a name="l00011"></a>00011 <span class="comment">*               using matrix functions  </span>
  64 <a name="l00012"></a>00012 <span class="comment">*                </span>
  65 <a name="l00013"></a>00013 <span class="comment">* Target Processor: Cortex-M4/Cortex-M3  </span>
  66 <a name="l00014"></a>00014 <span class="comment">*</span>
  67 <a name="l00015"></a>00015 <span class="comment">*</span>
  68 <a name="l00016"></a>00016 <span class="comment">* Version 1.0.3 2010/11/29 </span>
  69 <a name="l00017"></a>00017 <span class="comment">*    Re-organized the CMSIS folders and updated documentation. </span>
  70 <a name="l00018"></a>00018 <span class="comment">* </span>
  71 <a name="l00019"></a>00019 <span class="comment">* Version 1.0.1 2010/10/05 KK </span>
  72 <a name="l00020"></a>00020 <span class="comment">*    Production release and review comments incorporated.  </span>
  73 <a name="l00021"></a>00021 <span class="comment">*</span>
  74 <a name="l00022"></a>00022 <span class="comment">* Version 1.0.0 2010/09/20 KK</span>
  75 <a name="l00023"></a>00023 <span class="comment">*    Production release and review comments incorporated.</span>
  76 <a name="l00024"></a>00024 <span class="comment">* ------------------------------------------------------------------- */</span>
  77 <a name="l00025"></a>00025
  78 <a name="l00077"></a>00077 <span class="preprocessor">#include &quot;<a class="code" href="arm__math_8h.html">arm_math.h</a>&quot;</span>
  79 <a name="l00078"></a>00078 <span class="preprocessor">#include &quot;math_helper.h&quot;</span>
  80 <a name="l00079"></a>00079
  81 <a name="l00080"></a><a class="code" href="arm__matrix__example__f32_8c.html#af08ec3fef897d77c6817638bf0e0c5c6">00080</a> <span class="preprocessor">#define SNR_THRESHOLD   90 </span>
  82 <a name="l00081"></a>00081 <span class="preprocessor"></span>
  83 <a name="l00082"></a>00082 <span class="comment">/* -------------------------------------------------------------------------------- </span>
  84 <a name="l00083"></a>00083 <span class="comment">* Test input data(Cycles) taken from FIR Q15 module for differant cases of blockSize  </span>
  85 <a name="l00084"></a>00084 <span class="comment">* and tapSize </span>
  86 <a name="l00085"></a>00085 <span class="comment">* --------------------------------------------------------------------------------- */</span>
  87 <a name="l00086"></a>00086
  88 <a name="l00087"></a><a class="code" href="arm__matrix__example__f32_8c.html#a974d5f0aace6a99e29ca767907fb3b9f">00087</a> <span class="keyword">const</span> <a class="code" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715" title="32-bit floating-point type definition.">float32_t</a> <a class="code" href="arm__matrix__example__f32_8c.html#a974d5f0aace6a99e29ca767907fb3b9f">B_f32</a>[4] =
  89 <a name="l00088"></a>00088 {
  90 <a name="l00089"></a>00089     782.0, 7577.0, 470.0, 4505.0
  91 <a name="l00090"></a>00090 };
  92 <a name="l00091"></a>00091
  93 <a name="l00092"></a>00092 <span class="comment">/* -------------------------------------------------------------------------------- </span>
  94 <a name="l00093"></a>00093 <span class="comment">* Formula to fit is  C1 + C2 * numTaps + C3 * blockSize + C4 * numTaps * blockSize </span>
  95 <a name="l00094"></a>00094 <span class="comment">* -------------------------------------------------------------------------------- */</span>
  96 <a name="l00095"></a>00095
  97 <a name="l00096"></a><a class="code" href="arm__matrix__example__f32_8c.html#aed27b92d9847194d9dcce40cecf2b48a">00096</a> <span class="keyword">const</span> <a class="code" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715" title="32-bit floating-point type definition.">float32_t</a> <a class="code" href="arm__matrix__example__f32_8c.html#aed27b92d9847194d9dcce40cecf2b48a">A_f32</a>[16] =
  98 <a name="l00097"></a>00097 {
  99 <a name="l00098"></a>00098     <span class="comment">/* Const,   numTaps,    blockSize,  numTaps*blockSize */</span>
 100 <a name="l00099"></a>00099     1.0,        32.0,       4.0,        128.0,
 101 <a name="l00100"></a>00100     1.0,        32.0,       64.0,       2048.0,
 102 <a name="l00101"></a>00101     1.0,        16.0,       4.0,        64.0,
 103 <a name="l00102"></a>00102     1.0,        16.0,       64.0,       1024.0,
 104 <a name="l00103"></a>00103 };
 105 <a name="l00104"></a>00104
 106 <a name="l00105"></a>00105
 107 <a name="l00106"></a>00106 <span class="comment">/* ---------------------------------------------------------------------- </span>
 108 <a name="l00107"></a>00107 <span class="comment">* Temporary buffers  for storing intermediate values </span>
 109 <a name="l00108"></a>00108 <span class="comment">* ------------------------------------------------------------------- */</span>
 110 <a name="l00109"></a>00109 <span class="comment">/* Transpose of A Buffer */</span>
 111 <a name="l00110"></a><a class="code" href="arm__matrix__example__f32_8c.html#a46dc2aa6dfc692af7b4a1379d7329ccd">00110</a> <a class="code" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715" title="32-bit floating-point type definition.">float32_t</a> <a class="code" href="arm__matrix__example__f32_8c.html#a46dc2aa6dfc692af7b4a1379d7329ccd">AT_f32</a>[16];
 112 <a name="l00111"></a>00111 <span class="comment">/* (Transpose of A * A) Buffer */</span>
 113 <a name="l00112"></a><a class="code" href="arm__matrix__example__f32_8c.html#a867497c6bf86014513bf2ad3551aa896">00112</a> <a class="code" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715" title="32-bit floating-point type definition.">float32_t</a> <a class="code" href="arm__matrix__example__f32_8c.html#a867497c6bf86014513bf2ad3551aa896">ATMA_f32</a>[16];
 114 <a name="l00113"></a>00113 <span class="comment">/* Inverse(Transpose of A * A)  Buffer */</span>
 115 <a name="l00114"></a><a class="code" href="arm__matrix__example__f32_8c.html#a44425c149c52b326a3b7a77676686f00">00114</a> <a class="code" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715" title="32-bit floating-point type definition.">float32_t</a> <a class="code" href="arm__matrix__example__f32_8c.html#a44425c149c52b326a3b7a77676686f00">ATMAI_f32</a>[16];
 116 <a name="l00115"></a>00115 <span class="comment">/* Test Output Buffer */</span>
 117 <a name="l00116"></a><a class="code" href="arm__matrix__example__f32_8c.html#a98c67c0fc0cb5f2df51b21482d31d21c">00116</a> <a class="code" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715" title="32-bit floating-point type definition.">float32_t</a> <a class="code" href="arm__matrix__example__f32_8c.html#a98c67c0fc0cb5f2df51b21482d31d21c">X_f32</a>[4];
 118 <a name="l00117"></a>00117
 119 <a name="l00118"></a>00118 <span class="comment">/* ---------------------------------------------------------------------- </span>
 120 <a name="l00119"></a>00119 <span class="comment">* Reference ouput buffer C1, C2, C3 and C4 taken from MATLAB  </span>
 121 <a name="l00120"></a>00120 <span class="comment">* ------------------------------------------------------------------- */</span>
 122 <a name="l00121"></a><a class="code" href="arm__matrix__example__f32_8c.html#a6184758419722fa16bb883097c2f596b">00121</a> <span class="keyword">const</span> <a class="code" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715" title="32-bit floating-point type definition.">float32_t</a> <a class="code" href="arm__matrix__example__f32_8c.html#a6184758419722fa16bb883097c2f596b">xRef_f32</a>[4] = {73.0, 8.0, 21.25, 2.875};
 123 <a name="l00122"></a>00122
 124 <a name="l00123"></a><a class="code" href="arm__matrix__example__f32_8c.html#af06013f588a7003278de222913c9d819">00123</a> <a class="code" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715" title="32-bit floating-point type definition.">float32_t</a> <a class="code" href="arm__convolution__example__f32_8c.html#af06013f588a7003278de222913c9d819">snr</a>;
 125 <a name="l00124"></a>00124
 126 <a name="l00125"></a>00125
 127 <a name="l00126"></a>00126 <span class="comment">/* ---------------------------------------------------------------------- </span>
 128 <a name="l00127"></a>00127 <span class="comment">* Max magnitude FFT Bin test </span>
 129 <a name="l00128"></a>00128 <span class="comment">* ------------------------------------------------------------------- */</span>
 130 <a name="l00129"></a>00129
 131 <a name="l00130"></a><a class="code" href="arm__matrix__example__f32_8c.html#a52d2cba30e6946c95578be946ac12a65">00130</a> int32_t <a class="code" href="arm__class__marks__example__f32_8c.html#a196718f834091385d38586a0ce4009dc">main</a>(<span class="keywordtype">void</span>)
 132 <a name="l00131"></a>00131 {
 133 <a name="l00132"></a>00132
 134 <a name="l00133"></a>00133     <a class="code" href="structarm__matrix__instance__f32.html" title="Instance structure for the floating-point matrix structure.">arm_matrix_instance_f32</a> A;      <span class="comment">/* Matrix A Instance */</span>
 135 <a name="l00134"></a>00134     <a class="code" href="structarm__matrix__instance__f32.html" title="Instance structure for the floating-point matrix structure.">arm_matrix_instance_f32</a> AT;     <span class="comment">/* Matrix AT(A transpose) instance */</span>
 136 <a name="l00135"></a>00135     <a class="code" href="structarm__matrix__instance__f32.html" title="Instance structure for the floating-point matrix structure.">arm_matrix_instance_f32</a> ATMA;   <span class="comment">/* Matrix ATMA( AT multiply with A) instance */</span>
 137 <a name="l00136"></a>00136     <a class="code" href="structarm__matrix__instance__f32.html" title="Instance structure for the floating-point matrix structure.">arm_matrix_instance_f32</a> ATMAI;  <span class="comment">/* Matrix ATMAI(Inverse of ATMA) instance */</span>
 138 <a name="l00137"></a>00137     <a class="code" href="structarm__matrix__instance__f32.html" title="Instance structure for the floating-point matrix structure.">arm_matrix_instance_f32</a> B;      <span class="comment">/* Matrix B instance */</span>
 139 <a name="l00138"></a>00138     <a class="code" href="structarm__matrix__instance__f32.html" title="Instance structure for the floating-point matrix structure.">arm_matrix_instance_f32</a> X;      <span class="comment">/* Matrix X(Unknown Matrix) instance */</span>
 140 <a name="l00139"></a>00139
 141 <a name="l00140"></a>00140     uint32_t srcRows, srcColumns;   <span class="comment">/* Temporary variables */</span>
 142 <a name="l00141"></a>00141     <a class="code" href="arm__math_8h.html#a5e459c6409dfcd2927bb8a57491d7cf6" title="Error status returned by some functions in the library.">arm_status</a> <a class="code" href="arm__dotproduct__example__f32_8c.html#a88ccb294236ab22b00310c47164c53c3">status</a>;
 143 <a name="l00142"></a>00142
 144 <a name="l00143"></a>00143     <span class="comment">/* Initialise A Matrix Instance with numRows, numCols and data array(A_f32) */</span>
 145 <a name="l00144"></a>00144     srcRows = 4;
 146 <a name="l00145"></a>00145     srcColumns = 4;
 147 <a name="l00146"></a>00146     <a class="code" href="group___matrix_init.html#ga11e3dc41592a6401c13182fef9416a27" title="Floating-point matrix initialization.">arm_mat_init_f32</a>(&amp;A, srcRows, srcColumns, (<a class="code" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715" title="32-bit floating-point type definition.">float32_t</a> *)<a class="code" href="arm__matrix__example__f32_8c.html#aed27b92d9847194d9dcce40cecf2b48a">A_f32</a>);
 148 <a name="l00147"></a>00147
 149 <a name="l00148"></a>00148     <span class="comment">/* Initialise Matrix Instance AT with numRows, numCols and data array(AT_f32) */</span>
 150 <a name="l00149"></a>00149     srcRows = 4;
 151 <a name="l00150"></a>00150     srcColumns = 4;
 152 <a name="l00151"></a>00151     <a class="code" href="group___matrix_init.html#ga11e3dc41592a6401c13182fef9416a27" title="Floating-point matrix initialization.">arm_mat_init_f32</a>(&amp;AT, srcRows, srcColumns, <a class="code" href="arm__matrix__example__f32_8c.html#a46dc2aa6dfc692af7b4a1379d7329ccd">AT_f32</a>);
 153 <a name="l00152"></a>00152
 154 <a name="l00153"></a>00153     <span class="comment">/* calculation of A transpose */</span>
 155 <a name="l00154"></a>00154     status = <a class="code" href="group___matrix_trans.html#gad7dd9f108429da13d3864696ceeec789" title="Floating-point matrix transpose.">arm_mat_trans_f32</a>(&amp;A, &amp;AT);
 156 <a name="l00155"></a>00155
 157 <a name="l00156"></a>00156
 158 <a name="l00157"></a>00157     <span class="comment">/* Initialise ATMA Matrix Instance with numRows, numCols and data array(ATMA_f32) */</span>
 159 <a name="l00158"></a>00158     srcRows = 4;
 160 <a name="l00159"></a>00159     srcColumns = 4;
 161 <a name="l00160"></a>00160     <a class="code" href="group___matrix_init.html#ga11e3dc41592a6401c13182fef9416a27" title="Floating-point matrix initialization.">arm_mat_init_f32</a>(&amp;ATMA, srcRows, srcColumns, <a class="code" href="arm__matrix__example__f32_8c.html#a867497c6bf86014513bf2ad3551aa896">ATMA_f32</a>);
 162 <a name="l00161"></a>00161
 163 <a name="l00162"></a>00162     <span class="comment">/* calculation of AT Multiply with A */</span>
 164 <a name="l00163"></a>00163     status = <a class="code" href="group___matrix_mult.html#ga917bf0270310c1d3f0eda1fc7c0026a0" title="Floating-point matrix multiplication.">arm_mat_mult_f32</a>(&amp;AT, &amp;A, &amp;ATMA);
 165 <a name="l00164"></a>00164
 166 <a name="l00165"></a>00165     <span class="comment">/* Initialise ATMAI Matrix Instance with numRows, numCols and data array(ATMAI_f32) */</span>
 167 <a name="l00166"></a>00166     srcRows = 4;
 168 <a name="l00167"></a>00167     srcColumns = 4;
 169 <a name="l00168"></a>00168     <a class="code" href="group___matrix_init.html#ga11e3dc41592a6401c13182fef9416a27" title="Floating-point matrix initialization.">arm_mat_init_f32</a>(&amp;ATMAI, srcRows, srcColumns, <a class="code" href="arm__matrix__example__f32_8c.html#a44425c149c52b326a3b7a77676686f00">ATMAI_f32</a>);
 170 <a name="l00169"></a>00169
 171 <a name="l00170"></a>00170     <span class="comment">/* calculation of Inverse((Transpose(A) * A) */</span>
 172 <a name="l00171"></a>00171     status = <a class="code" href="group___matrix_inv.html#ga542be7aabbf7a2297a4b62cf212910e3" title="Floating-point matrix inverse.">arm_mat_inverse_f32</a>(&amp;ATMA, &amp;ATMAI);
 173 <a name="l00172"></a>00172
 174 <a name="l00173"></a>00173     <span class="comment">/* calculation of (Inverse((Transpose(A) * A)) *  Transpose(A)) */</span>
 175 <a name="l00174"></a>00174     status = <a class="code" href="group___matrix_mult.html#ga917bf0270310c1d3f0eda1fc7c0026a0" title="Floating-point matrix multiplication.">arm_mat_mult_f32</a>(&amp;ATMAI, &amp;AT, &amp;ATMA);
 176 <a name="l00175"></a>00175
 177 <a name="l00176"></a>00176     <span class="comment">/* Initialise B Matrix Instance with numRows, numCols and data array(B_f32) */</span>
 178 <a name="l00177"></a>00177     srcRows = 4;
 179 <a name="l00178"></a>00178     srcColumns = 1;
 180 <a name="l00179"></a>00179     <a class="code" href="group___matrix_init.html#ga11e3dc41592a6401c13182fef9416a27" title="Floating-point matrix initialization.">arm_mat_init_f32</a>(&amp;B, srcRows, srcColumns, (<a class="code" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715" title="32-bit floating-point type definition.">float32_t</a> *)<a class="code" href="arm__matrix__example__f32_8c.html#a974d5f0aace6a99e29ca767907fb3b9f">B_f32</a>);
 181 <a name="l00180"></a>00180
 182 <a name="l00181"></a>00181     <span class="comment">/* Initialise X Matrix Instance with numRows, numCols and data array(X_f32) */</span>
 183 <a name="l00182"></a>00182     srcRows = 4;
 184 <a name="l00183"></a>00183     srcColumns = 1;
 185 <a name="l00184"></a>00184     <a class="code" href="group___matrix_init.html#ga11e3dc41592a6401c13182fef9416a27" title="Floating-point matrix initialization.">arm_mat_init_f32</a>(&amp;X, srcRows, srcColumns, <a class="code" href="arm__matrix__example__f32_8c.html#a98c67c0fc0cb5f2df51b21482d31d21c">X_f32</a>);
 186 <a name="l00185"></a>00185
 187 <a name="l00186"></a>00186     <span class="comment">/* calculation ((Inverse((Transpose(A) * A)) *  Transpose(A)) * B) */</span>
 188 <a name="l00187"></a>00187     status = <a class="code" href="group___matrix_mult.html#ga917bf0270310c1d3f0eda1fc7c0026a0" title="Floating-point matrix multiplication.">arm_mat_mult_f32</a>(&amp;ATMA, &amp;B, &amp;X);
 189 <a name="l00188"></a>00188
 190 <a name="l00189"></a>00189     <span class="comment">/* Comparison of reference with test output */</span>
 191 <a name="l00190"></a>00190     <a class="code" href="arm__convolution__example__f32_8c.html#af06013f588a7003278de222913c9d819">snr</a> = arm_snr_f32((<a class="code" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715" title="32-bit floating-point type definition.">float32_t</a> *)<a class="code" href="arm__matrix__example__f32_8c.html#a6184758419722fa16bb883097c2f596b">xRef_f32</a>, <a class="code" href="arm__matrix__example__f32_8c.html#a98c67c0fc0cb5f2df51b21482d31d21c">X_f32</a>, 4);
 192 <a name="l00191"></a>00191
 193 <a name="l00192"></a>00192     <span class="comment">/*------------------------------------------------------------------------------ </span>
 194 <a name="l00193"></a>00193 <span class="comment">    *                   Initialise status depending on SNR calculations </span>
 195 <a name="l00194"></a>00194 <span class="comment">    *------------------------------------------------------------------------------*/</span>
 196 <a name="l00195"></a>00195     <span class="keywordflow">if</span>( <a class="code" href="arm__convolution__example__f32_8c.html#af06013f588a7003278de222913c9d819">snr</a> &gt; <a class="code" href="arm__matrix__example__f32_8c.html#af08ec3fef897d77c6817638bf0e0c5c6">SNR_THRESHOLD</a>)
 197 <a name="l00196"></a>00196     {
 198 <a name="l00197"></a>00197         status = <a class="code" href="arm__math_8h.html#a5e459c6409dfcd2927bb8a57491d7cf6a9f8b2a10bd827fb4600e77d455902eb0">ARM_MATH_SUCCESS</a>;
 199 <a name="l00198"></a>00198     }
 200 <a name="l00199"></a>00199     <span class="keywordflow">else</span>
 201 <a name="l00200"></a>00200     {
 202 <a name="l00201"></a>00201         status = <a class="code" href="arm__math_8h.html#a5e459c6409dfcd2927bb8a57491d7cf6a09457f2be656b35015fd6d36202fa376">ARM_MATH_TEST_FAILURE</a>;
 203 <a name="l00202"></a>00202     }
 204 <a name="l00203"></a>00203
 205 <a name="l00204"></a>00204
 206 <a name="l00205"></a>00205     <span class="comment">/* ---------------------------------------------------------------------- </span>
 207 <a name="l00206"></a>00206 <span class="comment">    ** Loop here if the signals fail the PASS check. </span>
 208 <a name="l00207"></a>00207 <span class="comment">    ** This denotes a test failure </span>
 209 <a name="l00208"></a>00208 <span class="comment">    ** ------------------------------------------------------------------- */</span>
 210 <a name="l00209"></a>00209     <span class="keywordflow">if</span>( status != <a class="code" href="arm__math_8h.html#a5e459c6409dfcd2927bb8a57491d7cf6a9f8b2a10bd827fb4600e77d455902eb0">ARM_MATH_SUCCESS</a>)
 211 <a name="l00210"></a>00210     {
 212 <a name="l00211"></a>00211       <span class="keywordflow">while</span>(1);
 213 <a name="l00212"></a>00212     }
 214 <a name="l00213"></a>00213 }
 215 <a name="l00214"></a>00214
 216 </pre></div></div>
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