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<div class="title">arm_dotproduct_example_f32.c</div> </div>
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<div class="contents">
<div class="fragment"><div class="line"><span class="comment">/* ----------------------------------------------------------------------</span></div>
<div class="line"><span class="comment">* Copyright (C) 2010-2012 ARM Limited. All rights reserved.</span></div>
<div class="line"><span class="comment">*</span></div>
<div class="line"><span class="comment">* $Date: 17. January 2013</span></div>
<div class="line"><span class="comment">* $Revision: V1.4.0</span></div>
<div class="line"><span class="comment">*</span></div>
<div class="line"><span class="comment">* Project: CMSIS DSP Library</span></div>
<div class="line"><span class="comment">* Title: arm_dotproduct_example_f32.c</span></div>
<div class="line"><span class="comment">*</span></div>
<div class="line"><span class="comment">* Description: Example code computing dot product of two vectors.</span></div>
<div class="line"><span class="comment">*</span></div>
<div class="line"><span class="comment">* Target Processor: Cortex-M4/Cortex-M3</span></div>
<div class="line"><span class="comment">*</span></div>
<div class="line"><span class="comment">* Redistribution and use in source and binary forms, with or without</span></div>
<div class="line"><span class="comment">* modification, are permitted provided that the following conditions</span></div>
<div class="line"><span class="comment">* are met:</span></div>
<div class="line"><span class="comment">* - Redistributions of source code must retain the above copyright</span></div>
<div class="line"><span class="comment">* notice, this list of conditions and the following disclaimer.</span></div>
<div class="line"><span class="comment">* - Redistributions in binary form must reproduce the above copyright</span></div>
<div class="line"><span class="comment">* notice, this list of conditions and the following disclaimer in</span></div>
<div class="line"><span class="comment">* the documentation and/or other materials provided with the</span></div>
<div class="line"><span class="comment">* distribution.</span></div>
<div class="line"><span class="comment">* - Neither the name of ARM LIMITED nor the names of its contributors</span></div>
<div class="line"><span class="comment">* may be used to endorse or promote products derived from this</span></div>
<div class="line"><span class="comment">* software without specific prior written permission.</span></div>
<div class="line"><span class="comment">*</span></div>
<div class="line"><span class="comment">* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS</span></div>
<div class="line"><span class="comment">* &quot;AS IS&quot; AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT</span></div>
<div class="line"><span class="comment">* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS</span></div>
<div class="line"><span class="comment">* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE</span></div>
<div class="line"><span class="comment">* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,</span></div>
<div class="line"><span class="comment">* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,</span></div>
<div class="line"><span class="comment">* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;</span></div>
<div class="line"><span class="comment">* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER</span></div>
<div class="line"><span class="comment">* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT</span></div>
<div class="line"><span class="comment">* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN</span></div>
<div class="line"><span class="comment">* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE</span></div>
<div class="line"><span class="comment">* POSSIBILITY OF SUCH DAMAGE.</span></div>
<div class="line"><span class="comment"> * -------------------------------------------------------------------- */</span></div>
<div class="line"></div>
<div class="line"><span class="preprocessor">#include &lt;math.h&gt;</span></div>
<div class="line"><span class="preprocessor">#include &quot;<a class="code" href="arm__math_8h.html">arm_math.h</a>&quot;</span></div>
<div class="line"></div>
<div class="line"><span class="comment">/* ----------------------------------------------------------------------</span></div>
<div class="line"><span class="comment">* Defines each of the tests performed</span></div>
<div class="line"><span class="comment">* ------------------------------------------------------------------- */</span></div>
<div class="line"><span class="preprocessor">#define MAX_BLOCKSIZE 32</span></div>
<div class="line"><span class="preprocessor"></span><span class="preprocessor">#define DELTA (0.000001f)</span></div>
<div class="line"><span class="preprocessor"></span></div>
<div class="line"><span class="comment">/* ----------------------------------------------------------------------</span></div>
<div class="line"><span class="comment">* Test input data for Floating point Dot Product example for 32-blockSize</span></div>
<div class="line"><span class="comment">* Generated by the MATLAB randn() function</span></div>
<div class="line"><span class="comment">* ------------------------------------------------------------------- */</span></div>
<div class="line"><span class="comment">/* ----------------------------------------------------------------------</span></div>
<div class="line"><span class="comment">** Test input data of srcA for blockSize 32</span></div>
<div class="line"><span class="comment">** ------------------------------------------------------------------- */</span></div>
<div class="line"><a class="code" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> <a name="a0"></a><a class="code" href="arm__dotproduct__example__f32_8c.html#a0c248a472fdc0507e4ab7d693e4876b6">srcA_buf_f32</a>[<a name="a1"></a><a class="code" href="arm__dotproduct__example__f32_8c.html#af8a1d2ed31f7c9a00fec46a798edb61b">MAX_BLOCKSIZE</a>] =</div>
<div class="line">{</div>
<div class="line"> -0.4325648115282207, -1.6655843782380970, 0.1253323064748307,</div>
<div class="line"> 0.2876764203585489, -1.1464713506814637, 1.1909154656429988,</div>
<div class="line"> 1.1891642016521031, -0.0376332765933176, 0.3272923614086541,</div>
<div class="line"> 0.1746391428209245, -0.1867085776814394, 0.7257905482933027,</div>
<div class="line"> -0.5883165430141887, 2.1831858181971011, -0.1363958830865957,</div>
<div class="line"> 0.1139313135208096, 1.0667682113591888, 0.0592814605236053,</div>
<div class="line"> -0.0956484054836690, -0.8323494636500225, 0.2944108163926404,</div>
<div class="line"> -1.3361818579378040, 0.7143245518189522, 1.6235620644462707,</div>
<div class="line"> -0.6917757017022868, 0.8579966728282626, 1.2540014216025324,</div>
<div class="line"> -1.5937295764474768, -1.4409644319010200, 0.5711476236581780,</div>
<div class="line"> -0.3998855777153632, 0.6899973754643451</div>
<div class="line">};</div>
<div class="line"></div>
<div class="line"><span class="comment">/* ----------------------------------------------------------------------</span></div>
<div class="line"><span class="comment">** Test input data of srcB for blockSize 32</span></div>
<div class="line"><span class="comment">** ------------------------------------------------------------------- */</span></div>
<div class="line"><a class="code" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> <a name="a2"></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>] =</div>
<div class="line">{</div>
<div class="line"> 1.7491401329284098, 0.1325982188803279, 0.3252281811989881,</div>
<div class="line"> -0.7938091410349637, 0.3149236145048914, -0.5272704888029532,</div>
<div class="line"> 0.9322666565031119, 1.1646643544607362, -2.0456694357357357,</div>
<div class="line"> -0.6443728590041911, 1.7410657940825480, 0.4867684246821860,</div>
<div class="line"> 1.0488288293660140, 1.4885752747099299, 1.2705014969484090,</div>
<div class="line"> -1.8561241921210170, 2.1343209047321410, 1.4358467535865909,</div>
<div class="line"> -0.9173023332875400, -1.1060770780029008, 0.8105708062681296,</div>
<div class="line"> 0.6985430696369063, -0.4015827425012831, 1.2687512030669628,</div>
<div class="line"> -0.7836083053674872, 0.2132664971465569, 0.7878984786088954,</div>
<div class="line"> 0.8966819356782295, -0.1869172943544062, 1.0131816724341454,</div>
<div class="line"> 0.2484350696132857, 0.0596083377937976</div>
<div class="line">};</div>
<div class="line"></div>
<div class="line"><span class="comment">/* Reference dot product output */</span></div>
<div class="line"><a class="code" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> <a name="a3"></a><a class="code" href="arm__dotproduct__example__f32_8c.html#ad57c1f9ad68d098d79b15ec6844a26fc">refDotProdOut</a> = 5.9273644806352142;</div>
<div class="line"></div>
<div class="line"><span class="comment">/* ----------------------------------------------------------------------</span></div>
<div class="line"><span class="comment">* Declare Global variables</span></div>
<div class="line"><span class="comment">* ------------------------------------------------------------------- */</span></div>
<div class="line"><a class="code" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> <a name="a4"></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></div>
<div class="line"><a class="code" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> <a name="a5"></a><a class="code" href="arm__dotproduct__example__f32_8c.html#a324833b61eae796082e07d078a67c34f">testOutput</a>; <span class="comment">/* Final ouput */</span></div>
<div class="line"></div>
<div class="line"><a class="code" href="arm__math_8h.html#a5e459c6409dfcd2927bb8a57491d7cf6">arm_status</a> <a name="a6"></a><a class="code" href="arm__dotproduct__example__f32_8c.html#a88ccb294236ab22b00310c47164c53c3">status</a>; <span class="comment">/* Status of the example */</span></div>
<div class="line"></div>
<div class="line">int32_t <a name="a7"></a><a class="code" href="arm__dotproduct__example__f32_8c.html#a52d2cba30e6946c95578be946ac12a65">main</a>(<span class="keywordtype">void</span>)</div>
<div class="line">{</div>
<div class="line"> uint32_t i; <span class="comment">/* Loop counter */</span></div>
<div class="line"> <a class="code" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715">float32_t</a> diff; <span class="comment">/* Difference between reference and test outputs */</span></div>
<div class="line"></div>
<div class="line"> <span class="comment">/* Multiplication of two input buffers */</span></div>
<div class="line"> <a name="a8"></a><a class="code" href="group__BasicMult.html#gacf950935141cad927bea886e88fd9e9b">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>);</div>
<div class="line"></div>
<div class="line"> <span class="comment">/* Accumulate the multiplication output values to</span></div>
<div class="line"><span class="comment"> get the dot product of the two inputs */</span></div>
<div class="line"> <span class="keywordflow">for</span>(i=0; i&lt; <a class="code" href="arm__dotproduct__example__f32_8c.html#af8a1d2ed31f7c9a00fec46a798edb61b">MAX_BLOCKSIZE</a>; i++)</div>
<div class="line"> {</div>
<div class="line"> <a name="a9"></a><a class="code" href="group__BasicAdd.html#gabfef1e86e458314a61f4baa441d9765e">arm_add_f32</a>(&amp;<a class="code" href="arm__dotproduct__example__f32_8c.html#a324833b61eae796082e07d078a67c34f">testOutput</a>, &amp;<a class="code" href="arm__dotproduct__example__f32_8c.html#ad0bfd425dfe1ff2bda80fb957e464098">multOutput</a>[i], &amp;<a class="code" href="arm__dotproduct__example__f32_8c.html#a324833b61eae796082e07d078a67c34f">testOutput</a>, 1);</div>
<div class="line"> }</div>
<div class="line"></div>
<div class="line"> <span class="comment">/* absolute value of difference between ref and test */</span></div>
<div class="line"> diff = fabsf(<a class="code" href="arm__dotproduct__example__f32_8c.html#ad57c1f9ad68d098d79b15ec6844a26fc">refDotProdOut</a> - <a class="code" href="arm__dotproduct__example__f32_8c.html#a324833b61eae796082e07d078a67c34f">testOutput</a>);</div>
<div class="line"></div>
<div class="line"> <span class="comment">/* Comparison of dot product value with reference */</span></div>
<div class="line"> <span class="keywordflow">if</span> (diff &gt; <a name="a10"></a><a class="code" href="arm__dotproduct__example__f32_8c.html#a3fd2b1bcd7ddcf506237987ad780f495">DELTA</a>)</div>
<div class="line"> {</div>
<div class="line"> <a class="code" href="arm__dotproduct__example__f32_8c.html#a88ccb294236ab22b00310c47164c53c3">status</a> = <a name="a11"></a><a class="code" href="arm__math_8h.html#a5e459c6409dfcd2927bb8a57491d7cf6a09457f2be656b35015fd6d36202fa376">ARM_MATH_TEST_FAILURE</a>;</div>
<div class="line"> }</div>
<div class="line"></div>
<div class="line"> <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>)</div>
<div class="line"> {</div>
<div class="line"> <span class="keywordflow">while</span> (1);</div>
<div class="line"> }</div>
<div class="line"></div>
<div class="line"> <span class="keywordflow">while</span> (1); <span class="comment">/* main function does not return */</span></div>
<div class="line">}</div>
<div class="line"></div>
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