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  50 <h1>arm_dotproduct_example_f32.c</h1>  </div>
  51 </div>
  52 <div class="contents">
  53 <a href="arm__dotproduct__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_dotproduct_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 computing dot product of two vectors. </span>
  63 <a name="l00011"></a>00011 <span class="comment">* </span>
  64 <a name="l00012"></a>00012 <span class="comment">* Target Processor: Cortex-M4/Cortex-M3  </span>
  65 <a name="l00013"></a>00013 <span class="comment">*</span>
  66 <a name="l00014"></a>00014 <span class="comment">*</span>
  67 <a name="l00015"></a>00015 <span class="comment">* Version 1.0.3 2010/11/29 </span>
  68 <a name="l00016"></a>00016 <span class="comment">*    Re-organized the CMSIS folders and updated documentation. </span>
  69 <a name="l00017"></a>00017 <span class="comment">* </span>
  70 <a name="l00018"></a>00018 <span class="comment">* Version 1.0.1 2010/10/05 KK </span>
  71 <a name="l00019"></a>00019 <span class="comment">*    Production release and review comments incorporated.  </span>
  72 <a name="l00020"></a>00020 <span class="comment">*</span>
  73 <a name="l00021"></a>00021 <span class="comment">* Version 1.0.0 2010/09/20 KK</span>
  74 <a name="l00022"></a>00022 <span class="comment">*    Production release and review comments incorporated.</span>
  75 <a name="l00023"></a>00023 <span class="comment">* ------------------------------------------------------------------- */</span>
  76 <a name="l00024"></a>00024
  77 <a name="l00070"></a>00070 <span class="preprocessor">#include &lt;math.h&gt;</span>
  78 <a name="l00071"></a>00071 <span class="preprocessor">#include &quot;<a class="code" href="arm__math_8h.html">arm_math.h</a>&quot;</span>
  79 <a name="l00072"></a>00072
  80 <a name="l00073"></a>00073 <span class="comment">/* ---------------------------------------------------------------------- </span>
  81 <a name="l00074"></a>00074 <span class="comment">* Defines each of the tests performed </span>
  82 <a name="l00075"></a>00075 <span class="comment">* ------------------------------------------------------------------- */</span>
  83 <a name="l00076"></a><a class="code" href="arm__dotproduct__example__f32_8c.html#af8a1d2ed31f7c9a00fec46a798edb61b">00076</a> <span class="preprocessor">#define MAX_BLOCKSIZE   32 </span>
  84 <a name="l00077"></a><a class="code" href="arm__dotproduct__example__f32_8c.html#a3fd2b1bcd7ddcf506237987ad780f495">00077</a> <span class="preprocessor"></span><span class="preprocessor">#define DELTA           (0.000001f) </span>
  85 <a name="l00078"></a>00078 <span class="preprocessor"></span>
  86 <a name="l00079"></a>00079 <span class="comment">/* ---------------------------------------------------------------------- </span>
  87 <a name="l00080"></a>00080 <span class="comment">* Test input data for Floating point Dot Product example for 32-blockSize </span>
  88 <a name="l00081"></a>00081 <span class="comment">* Generated by the MATLAB randn() function </span>
  89 <a name="l00082"></a>00082 <span class="comment">* ------------------------------------------------------------------- */</span>
  90 <a name="l00083"></a>00083 <span class="comment">/* ----------------------------------------------------------------------  </span>
  91 <a name="l00084"></a>00084 <span class="comment">** Test input data of srcA for blockSize 32   </span>
  92 <a name="l00085"></a>00085 <span class="comment">** ------------------------------------------------------------------- */</span>
  93 <a name="l00086"></a><a class="code" href="arm__dotproduct__example__f32_8c.html#a0c248a472fdc0507e4ab7d693e4876b6">00086</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__dotproduct__example__f32_8c.html#a0c248a472fdc0507e4ab7d693e4876b6">srcA_buf_f32</a>[<a class="code" href="arm__dotproduct__example__f32_8c.html#af8a1d2ed31f7c9a00fec46a798edb61b">MAX_BLOCKSIZE</a>] =
  94 <a name="l00087"></a>00087 {
  95 <a name="l00088"></a>00088 -0.4325648115282207,    -1.6655843782380970,    0.1253323064748307,
  96 <a name="l00089"></a>00089  0.2876764203585489,    -1.1464713506814637,    1.1909154656429988,
  97 <a name="l00090"></a>00090  1.1891642016521031,    -0.0376332765933176,    0.3272923614086541,
  98 <a name="l00091"></a>00091  0.1746391428209245,    -0.1867085776814394,    0.7257905482933027,
  99 <a name="l00092"></a>00092 -0.5883165430141887,     2.1831858181971011,   -0.1363958830865957,
 100 <a name="l00093"></a>00093  0.1139313135208096,     1.0667682113591888,    0.0592814605236053,
 101 <a name="l00094"></a>00094 -0.0956484054836690,    -0.8323494636500225,    0.2944108163926404,
 102 <a name="l00095"></a>00095 -1.3361818579378040,     0.7143245518189522,    1.6235620644462707,
 103 <a name="l00096"></a>00096 -0.6917757017022868,     0.8579966728282626,    1.2540014216025324,
 104 <a name="l00097"></a>00097 -1.5937295764474768,    -1.4409644319010200,    0.5711476236581780,
 105 <a name="l00098"></a>00098 -0.3998855777153632,     0.6899973754643451
 106 <a name="l00099"></a>00099 };
 107 <a name="l00100"></a>00100
 108 <a name="l00101"></a>00101 <span class="comment">/* ----------------------------------------------------------------------  </span>
 109 <a name="l00102"></a>00102 <span class="comment">** Test input data of srcB for blockSize 32   </span>
 110 <a name="l00103"></a>00103 <span class="comment">** ------------------------------------------------------------------- */</span>
 111 <a name="l00104"></a><a class="code" href="arm__dotproduct__example__f32_8c.html#a67d9082c1585d4854ae9ca38db170ff5">00104</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__dotproduct__example__f32_8c.html#a67d9082c1585d4854ae9ca38db170ff5">srcB_buf_f32</a>[<a class="code" href="arm__dotproduct__example__f32_8c.html#af8a1d2ed31f7c9a00fec46a798edb61b">MAX_BLOCKSIZE</a>] =
 112 <a name="l00105"></a>00105 {
 113 <a name="l00106"></a>00106  1.7491401329284098,    0.1325982188803279,  0.3252281811989881,
 114 <a name="l00107"></a>00107 -0.7938091410349637,    0.3149236145048914, -0.5272704888029532,
 115 <a name="l00108"></a>00108  0.9322666565031119,    1.1646643544607362, -2.0456694357357357,
 116 <a name="l00109"></a>00109 -0.6443728590041911,    1.7410657940825480,  0.4867684246821860,
 117 <a name="l00110"></a>00110  1.0488288293660140,    1.4885752747099299,  1.2705014969484090,
 118 <a name="l00111"></a>00111 -1.8561241921210170,    2.1343209047321410,  1.4358467535865909,
 119 <a name="l00112"></a>00112 -0.9173023332875400,   -1.1060770780029008,  0.8105708062681296,
 120 <a name="l00113"></a>00113  0.6985430696369063,   -0.4015827425012831,  1.2687512030669628,
 121 <a name="l00114"></a>00114 -0.7836083053674872,    0.2132664971465569,  0.7878984786088954,
 122 <a name="l00115"></a>00115  0.8966819356782295,   -0.1869172943544062,  1.0131816724341454,
 123 <a name="l00116"></a>00116  0.2484350696132857,    0.0596083377937976
 124 <a name="l00117"></a>00117 };
 125 <a name="l00118"></a>00118
 126 <a name="l00119"></a>00119 <span class="comment">/* Reference dot product output */</span>
 127 <a name="l00120"></a><a class="code" href="arm__dotproduct__example__f32_8c.html#ad57c1f9ad68d098d79b15ec6844a26fc">00120</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__dotproduct__example__f32_8c.html#ad57c1f9ad68d098d79b15ec6844a26fc">refDotProdOut</a> = 5.9273644806352142;
 128 <a name="l00121"></a>00121
 129 <a name="l00122"></a>00122 <span class="comment">/* ---------------------------------------------------------------------- </span>
 130 <a name="l00123"></a>00123 <span class="comment">* Declare Global variables  </span>
 131 <a name="l00124"></a>00124 <span class="comment">* ------------------------------------------------------------------- */</span>
 132 <a name="l00125"></a><a class="code" href="arm__dotproduct__example__f32_8c.html#ad0bfd425dfe1ff2bda80fb957e464098">00125</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__dotproduct__example__f32_8c.html#ad0bfd425dfe1ff2bda80fb957e464098">multOutput</a>[<a class="code" href="arm__dotproduct__example__f32_8c.html#af8a1d2ed31f7c9a00fec46a798edb61b">MAX_BLOCKSIZE</a>];  <span class="comment">/* Intermediate output */</span>
 133 <a name="l00126"></a><a class="code" href="arm__dotproduct__example__f32_8c.html#a324833b61eae796082e07d078a67c34f">00126</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__class__marks__example__f32_8c.html#afd4d61aad5f35a4e42d580004e2f9a1d">testOutput</a>;  <span class="comment">/* Final ouput */</span>
 134 <a name="l00127"></a>00127
 135 <a name="l00128"></a><a class="code" href="arm__dotproduct__example__f32_8c.html#a88ccb294236ab22b00310c47164c53c3">00128</a> <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>;   <span class="comment">/* Status of the example */</span>
 136 <a name="l00129"></a>00129
 137 <a name="l00130"></a><a class="code" href="arm__dotproduct__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>)
 138 <a name="l00131"></a>00131 {
 139 <a name="l00132"></a>00132     uint32_t i;          <span class="comment">/* Loop counter */</span>
 140 <a name="l00133"></a>00133     <a class="code" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715" title="32-bit floating-point type definition.">float32_t</a> diff;      <span class="comment">/* Difference between reference and test outputs */</span>
 141 <a name="l00134"></a>00134
 142 <a name="l00135"></a>00135     <span class="comment">/* Multiplication of two input buffers */</span>
 143 <a name="l00136"></a>00136     <a class="code" href="group___basic_mult.html#gaca3f0b8227da431ab29225b88888aa32" title="Floating-point vector multiplication.">arm_mult_f32</a>(<a class="code" href="arm__dotproduct__example__f32_8c.html#a0c248a472fdc0507e4ab7d693e4876b6">srcA_buf_f32</a>, <a class="code" href="arm__dotproduct__example__f32_8c.html#a67d9082c1585d4854ae9ca38db170ff5">srcB_buf_f32</a>, <a class="code" href="arm__dotproduct__example__f32_8c.html#ad0bfd425dfe1ff2bda80fb957e464098">multOutput</a>, <a class="code" href="arm__dotproduct__example__f32_8c.html#af8a1d2ed31f7c9a00fec46a798edb61b">MAX_BLOCKSIZE</a>);
 144 <a name="l00137"></a>00137
 145 <a name="l00138"></a>00138     <span class="comment">/* Accumulate the multiplication output values to  </span>
 146 <a name="l00139"></a>00139 <span class="comment">       get the dot product of the two inputs */</span>
 147 <a name="l00140"></a>00140     <span class="keywordflow">for</span>(i=0; i&lt; <a class="code" href="arm__dotproduct__example__f32_8c.html#af8a1d2ed31f7c9a00fec46a798edb61b">MAX_BLOCKSIZE</a>; i++)
 148 <a name="l00141"></a>00141     {
 149 <a name="l00142"></a>00142         <a class="code" href="group___basic_add.html#ga6a904a547413b10565dd1d251c6bafbd" title="Floating-point vector addition.">arm_add_f32</a>(&amp;<a class="code" href="arm__class__marks__example__f32_8c.html#afd4d61aad5f35a4e42d580004e2f9a1d">testOutput</a>, &amp;<a class="code" href="arm__dotproduct__example__f32_8c.html#ad0bfd425dfe1ff2bda80fb957e464098">multOutput</a>[i], &amp;<a class="code" href="arm__class__marks__example__f32_8c.html#afd4d61aad5f35a4e42d580004e2f9a1d">testOutput</a>, 1);
 150 <a name="l00143"></a>00143     }
 151 <a name="l00144"></a>00144
 152 <a name="l00145"></a>00145     <span class="comment">/* absolute value of difference between ref and test */</span>
 153 <a name="l00146"></a>00146     diff = fabsf(<a class="code" href="arm__dotproduct__example__f32_8c.html#ad57c1f9ad68d098d79b15ec6844a26fc">refDotProdOut</a> - <a class="code" href="arm__class__marks__example__f32_8c.html#afd4d61aad5f35a4e42d580004e2f9a1d">testOutput</a>);
 154 <a name="l00147"></a>00147
 155 <a name="l00148"></a>00148     <span class="comment">/* Comparison of dot product value with reference */</span>
 156 <a name="l00149"></a>00149     <span class="keywordflow">if</span>(diff &gt; <a class="code" href="arm__dotproduct__example__f32_8c.html#a3fd2b1bcd7ddcf506237987ad780f495">DELTA</a>)
 157 <a name="l00150"></a>00150     {
 158 <a name="l00151"></a>00151         <a class="code" href="arm__dotproduct__example__f32_8c.html#a88ccb294236ab22b00310c47164c53c3">status</a> = <a class="code" href="arm__math_8h.html#a5e459c6409dfcd2927bb8a57491d7cf6a09457f2be656b35015fd6d36202fa376">ARM_MATH_TEST_FAILURE</a>;
 159 <a name="l00152"></a>00152     }
 160 <a name="l00153"></a>00153
 161 <a name="l00154"></a>00154     <span class="keywordflow">if</span>( <a class="code" href="arm__dotproduct__example__f32_8c.html#a88ccb294236ab22b00310c47164c53c3">status</a> == <a class="code" href="arm__math_8h.html#a5e459c6409dfcd2927bb8a57491d7cf6a09457f2be656b35015fd6d36202fa376">ARM_MATH_TEST_FAILURE</a>)
 162 <a name="l00155"></a>00155     {
 163 <a name="l00156"></a>00156       <span class="keywordflow">while</span>(1);
 164 <a name="l00157"></a>00157     }
 165 <a name="l00158"></a>00158 }
 166 <a name="l00159"></a>00159
 167 </pre></div></div>
 168 </div>
 169 <!--- window showing the filter options -->
 170 <div id="MSearchSelectWindow"
 171      onmouseover="return searchBox.OnSearchSelectShow()"
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