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+<h1>arm_dotproduct_example_f32.c</h1> </div>
+</div>
+<div class="contents">
+<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>
+<a name="l00002"></a>00002 <span class="comment">* Copyright (C) 2010 ARM Limited. All rights reserved. </span>
+<a name="l00003"></a>00003 <span class="comment">* </span>
+<a name="l00004"></a>00004 <span class="comment">* $Date: 29. November 2010 </span>
+<a name="l00005"></a>00005 <span class="comment">* $Revision: V1.0.3 </span>
+<a name="l00006"></a>00006 <span class="comment">* </span>
+<a name="l00007"></a>00007 <span class="comment">* Project: CMSIS DSP Library </span>
+<a name="l00008"></a>00008 <span class="comment">* Title: arm_dotproduct_example_f32.c </span>
+<a name="l00009"></a>00009 <span class="comment">* </span>
+<a name="l00010"></a>00010 <span class="comment">* Description: Example code computing dot product of two vectors. </span>
+<a name="l00011"></a>00011 <span class="comment">* </span>
+<a name="l00012"></a>00012 <span class="comment">* Target Processor: Cortex-M4/Cortex-M3 </span>
+<a name="l00013"></a>00013 <span class="comment">*</span>
+<a name="l00014"></a>00014 <span class="comment">*</span>
+<a name="l00015"></a>00015 <span class="comment">* Version 1.0.3 2010/11/29 </span>
+<a name="l00016"></a>00016 <span class="comment">* Re-organized the CMSIS folders and updated documentation. </span>
+<a name="l00017"></a>00017 <span class="comment">* </span>
+<a name="l00018"></a>00018 <span class="comment">* Version 1.0.1 2010/10/05 KK </span>
+<a name="l00019"></a>00019 <span class="comment">* Production release and review comments incorporated. </span>
+<a name="l00020"></a>00020 <span class="comment">*</span>
+<a name="l00021"></a>00021 <span class="comment">* Version 1.0.0 2010/09/20 KK</span>
+<a name="l00022"></a>00022 <span class="comment">* Production release and review comments incorporated.</span>
+<a name="l00023"></a>00023 <span class="comment">* ------------------------------------------------------------------- */</span>
+<a name="l00024"></a>00024
+<a name="l00070"></a>00070 <span class="preprocessor">#include <math.h></span>
+<a name="l00071"></a>00071 <span class="preprocessor">#include "<a class="code" href="arm__math_8h.html">arm_math.h</a>"</span>
+<a name="l00072"></a>00072
+<a name="l00073"></a>00073 <span class="comment">/* ---------------------------------------------------------------------- </span>
+<a name="l00074"></a>00074 <span class="comment">* Defines each of the tests performed </span>
+<a name="l00075"></a>00075 <span class="comment">* ------------------------------------------------------------------- */</span>
+<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>
+<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>
+<a name="l00078"></a>00078 <span class="preprocessor"></span>
+<a name="l00079"></a>00079 <span class="comment">/* ---------------------------------------------------------------------- </span>
+<a name="l00080"></a>00080 <span class="comment">* Test input data for Floating point Dot Product example for 32-blockSize </span>
+<a name="l00081"></a>00081 <span class="comment">* Generated by the MATLAB randn() function </span>
+<a name="l00082"></a>00082 <span class="comment">* ------------------------------------------------------------------- */</span>
+<a name="l00083"></a>00083 <span class="comment">/* ---------------------------------------------------------------------- </span>
+<a name="l00084"></a>00084 <span class="comment">** Test input data of srcA for blockSize 32 </span>
+<a name="l00085"></a>00085 <span class="comment">** ------------------------------------------------------------------- */</span>
+<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>] =
+<a name="l00087"></a>00087 {
+<a name="l00088"></a>00088 -0.4325648115282207, -1.6655843782380970, 0.1253323064748307,
+<a name="l00089"></a>00089 0.2876764203585489, -1.1464713506814637, 1.1909154656429988,
+<a name="l00090"></a>00090 1.1891642016521031, -0.0376332765933176, 0.3272923614086541,
+<a name="l00091"></a>00091 0.1746391428209245, -0.1867085776814394, 0.7257905482933027,
+<a name="l00092"></a>00092 -0.5883165430141887, 2.1831858181971011, -0.1363958830865957,
+<a name="l00093"></a>00093 0.1139313135208096, 1.0667682113591888, 0.0592814605236053,
+<a name="l00094"></a>00094 -0.0956484054836690, -0.8323494636500225, 0.2944108163926404,
+<a name="l00095"></a>00095 -1.3361818579378040, 0.7143245518189522, 1.6235620644462707,
+<a name="l00096"></a>00096 -0.6917757017022868, 0.8579966728282626, 1.2540014216025324,
+<a name="l00097"></a>00097 -1.5937295764474768, -1.4409644319010200, 0.5711476236581780,
+<a name="l00098"></a>00098 -0.3998855777153632, 0.6899973754643451
+<a name="l00099"></a>00099 };
+<a name="l00100"></a>00100
+<a name="l00101"></a>00101 <span class="comment">/* ---------------------------------------------------------------------- </span>
+<a name="l00102"></a>00102 <span class="comment">** Test input data of srcB for blockSize 32 </span>
+<a name="l00103"></a>00103 <span class="comment">** ------------------------------------------------------------------- */</span>
+<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>] =
+<a name="l00105"></a>00105 {
+<a name="l00106"></a>00106 1.7491401329284098, 0.1325982188803279, 0.3252281811989881,
+<a name="l00107"></a>00107 -0.7938091410349637, 0.3149236145048914, -0.5272704888029532,
+<a name="l00108"></a>00108 0.9322666565031119, 1.1646643544607362, -2.0456694357357357,
+<a name="l00109"></a>00109 -0.6443728590041911, 1.7410657940825480, 0.4867684246821860,
+<a name="l00110"></a>00110 1.0488288293660140, 1.4885752747099299, 1.2705014969484090,
+<a name="l00111"></a>00111 -1.8561241921210170, 2.1343209047321410, 1.4358467535865909,
+<a name="l00112"></a>00112 -0.9173023332875400, -1.1060770780029008, 0.8105708062681296,
+<a name="l00113"></a>00113 0.6985430696369063, -0.4015827425012831, 1.2687512030669628,
+<a name="l00114"></a>00114 -0.7836083053674872, 0.2132664971465569, 0.7878984786088954,
+<a name="l00115"></a>00115 0.8966819356782295, -0.1869172943544062, 1.0131816724341454,
+<a name="l00116"></a>00116 0.2484350696132857, 0.0596083377937976
+<a name="l00117"></a>00117 };
+<a name="l00118"></a>00118
+<a name="l00119"></a>00119 <span class="comment">/* Reference dot product output */</span>
+<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;
+<a name="l00121"></a>00121
+<a name="l00122"></a>00122 <span class="comment">/* ---------------------------------------------------------------------- </span>
+<a name="l00123"></a>00123 <span class="comment">* Declare Global variables </span>
+<a name="l00124"></a>00124 <span class="comment">* ------------------------------------------------------------------- */</span>
+<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>
+<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>
+<a name="l00127"></a>00127
+<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>
+<a name="l00129"></a>00129
+<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>)
+<a name="l00131"></a>00131 {
+<a name="l00132"></a>00132 uint32_t i; <span class="comment">/* Loop counter */</span>
+<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>
+<a name="l00134"></a>00134
+<a name="l00135"></a>00135 <span class="comment">/* Multiplication of two input buffers */</span>
+<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>);
+<a name="l00137"></a>00137
+<a name="l00138"></a>00138 <span class="comment">/* Accumulate the multiplication output values to </span>
+<a name="l00139"></a>00139 <span class="comment"> get the dot product of the two inputs */</span>
+<a name="l00140"></a>00140 <span class="keywordflow">for</span>(i=0; i< <a class="code" href="arm__dotproduct__example__f32_8c.html#af8a1d2ed31f7c9a00fec46a798edb61b">MAX_BLOCKSIZE</a>; i++)
+<a name="l00141"></a>00141 {
+<a name="l00142"></a>00142 <a class="code" href="group___basic_add.html#ga6a904a547413b10565dd1d251c6bafbd" title="Floating-point vector addition.">arm_add_f32</a>(&<a class="code" href="arm__class__marks__example__f32_8c.html#afd4d61aad5f35a4e42d580004e2f9a1d">testOutput</a>, &<a class="code" href="arm__dotproduct__example__f32_8c.html#ad0bfd425dfe1ff2bda80fb957e464098">multOutput</a>[i], &<a class="code" href="arm__class__marks__example__f32_8c.html#afd4d61aad5f35a4e42d580004e2f9a1d">testOutput</a>, 1);
+<a name="l00143"></a>00143 }
+<a name="l00144"></a>00144
+<a name="l00145"></a>00145 <span class="comment">/* absolute value of difference between ref and test */</span>
+<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>);
+<a name="l00147"></a>00147
+<a name="l00148"></a>00148 <span class="comment">/* Comparison of dot product value with reference */</span>
+<a name="l00149"></a>00149 <span class="keywordflow">if</span>(diff > <a class="code" href="arm__dotproduct__example__f32_8c.html#a3fd2b1bcd7ddcf506237987ad780f495">DELTA</a>)
+<a name="l00150"></a>00150 {
+<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>;
+<a name="l00152"></a>00152 }
+<a name="l00153"></a>00153
+<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>)
+<a name="l00155"></a>00155 {
+<a name="l00156"></a>00156 <span class="keywordflow">while</span>(1);
+<a name="l00157"></a>00157 }
+<a name="l00158"></a>00158 }
+<a name="l00159"></a>00159
+</pre></div></div>
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