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<div class="title">arm_matrix_example_f32.c</div> </div>
</div><!--header-->
<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_matrix_example_f32.c</span></div>
<div class="line"><span class="comment">*</span></div>
<div class="line"><span class="comment">* Description: Example code demonstrating least square fit to data</span></div>
<div class="line"><span class="comment">* using matrix functions</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">* "AS IS" 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 "<a class="code" href="arm__math_8h.html">arm_math.h</a>"</span></div>
<div class="line"><span class="preprocessor">#include "math_helper.h"</span></div>
<div class="line"></div>
<div class="line"><span class="preprocessor">#define SNR_THRESHOLD 90</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(Cycles) taken from FIR Q15 module for differant cases of blockSize</span></div>
<div class="line"><span class="comment">* and tapSize</span></div>
<div class="line"><span class="comment">* --------------------------------------------------------------------------------- */</span></div>
<div class="line"></div>
<div class="line"><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 name="a0"></a><a class="code" href="arm__matrix__example__f32_8c.html#a974d5f0aace6a99e29ca767907fb3b9f">B_f32</a>[4] =</div>
<div class="line">{</div>
<div class="line"> 782.0, 7577.0, 470.0, 4505.0</div>
<div class="line">};</div>
<div class="line"></div>
<div class="line"><span class="comment">/* --------------------------------------------------------------------------------</span></div>
<div class="line"><span class="comment">* Formula to fit is C1 + C2 * numTaps + C3 * blockSize + C4 * numTaps * blockSize</span></div>
<div class="line"><span class="comment">* -------------------------------------------------------------------------------- */</span></div>
<div class="line"></div>
<div class="line"><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 name="a1"></a><a class="code" href="arm__matrix__example__f32_8c.html#aed27b92d9847194d9dcce40cecf2b48a">A_f32</a>[16] =</div>
<div class="line">{</div>
<div class="line"> <span class="comment">/* Const, numTaps, blockSize, numTaps*blockSize */</span></div>
<div class="line"> 1.0, 32.0, 4.0, 128.0,</div>
<div class="line"> 1.0, 32.0, 64.0, 2048.0,</div>
<div class="line"> 1.0, 16.0, 4.0, 64.0,</div>
<div class="line"> 1.0, 16.0, 64.0, 1024.0,</div>
<div class="line">};</div>
<div class="line"></div>
<div class="line"></div>
<div class="line"><span class="comment">/* ----------------------------------------------------------------------</span></div>
<div class="line"><span class="comment">* Temporary buffers for storing intermediate values</span></div>
<div class="line"><span class="comment">* ------------------------------------------------------------------- */</span></div>
<div class="line"><span class="comment">/* Transpose of A Buffer */</span></div>
<div class="line"><a class="code" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715" title="32-bit floating-point type definition.">float32_t</a> <a name="a2"></a><a class="code" href="arm__matrix__example__f32_8c.html#a46dc2aa6dfc692af7b4a1379d7329ccd">AT_f32</a>[16];</div>
<div class="line"><span class="comment">/* (Transpose of A * A) Buffer */</span></div>
<div class="line"><a class="code" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715" title="32-bit floating-point type definition.">float32_t</a> <a name="a3"></a><a class="code" href="arm__matrix__example__f32_8c.html#a867497c6bf86014513bf2ad3551aa896">ATMA_f32</a>[16];</div>
<div class="line"><span class="comment">/* Inverse(Transpose of A * A) Buffer */</span></div>
<div class="line"><a class="code" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715" title="32-bit floating-point type definition.">float32_t</a> <a name="a4"></a><a class="code" href="arm__matrix__example__f32_8c.html#a44425c149c52b326a3b7a77676686f00">ATMAI_f32</a>[16];</div>
<div class="line"><span class="comment">/* Test Output Buffer */</span></div>
<div class="line"><a class="code" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715" title="32-bit floating-point type definition.">float32_t</a> <a name="a5"></a><a class="code" href="arm__matrix__example__f32_8c.html#a98c67c0fc0cb5f2df51b21482d31d21c">X_f32</a>[4];</div>
<div class="line"></div>
<div class="line"><span class="comment">/* ----------------------------------------------------------------------</span></div>
<div class="line"><span class="comment">* Reference ouput buffer C1, C2, C3 and C4 taken from MATLAB</span></div>
<div class="line"><span class="comment">* ------------------------------------------------------------------- */</span></div>
<div class="line"><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 name="a6"></a><a class="code" href="arm__matrix__example__f32_8c.html#a6184758419722fa16bb883097c2f596b">xRef_f32</a>[4] = {73.0, 8.0, 21.25, 2.875};</div>
<div class="line"></div>
<div class="line"><a class="code" href="arm__math_8h.html#a4611b605e45ab401f02cab15c5e38715" title="32-bit floating-point type definition.">float32_t</a> <a name="a7"></a><a class="code" href="_a_r_m_2arm__convolution__example__f32_8c.html#af06013f588a7003278de222913c9d819">snr</a>;</div>
<div class="line"></div>
<div class="line"></div>
<div class="line"><span class="comment">/* ----------------------------------------------------------------------</span></div>
<div class="line"><span class="comment">* Max magnitude FFT Bin test</span></div>
<div class="line"><span class="comment">* ------------------------------------------------------------------- */</span></div>
<div class="line"></div>
<div class="line">int32_t <a name="a8"></a><a class="code" href="_a_r_m_2arm__class__marks__example__f32_8c.html#a196718f834091385d38586a0ce4009dc">main</a>(<span class="keywordtype">void</span>)</div>
<div class="line">{</div>
<div class="line"></div>
<div class="line"> <a name="_a9"></a><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></div>
<div class="line"> <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></div>
<div class="line"> <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></div>
<div class="line"> <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></div>
<div class="line"> <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></div>
<div class="line"> <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></div>
<div class="line"></div>
<div class="line"> uint32_t srcRows, srcColumns; <span class="comment">/* Temporary variables */</span></div>
<div class="line"> <a class="code" href="arm__math_8h.html#a5e459c6409dfcd2927bb8a57491d7cf6" title="Error status returned by some functions in the library.">arm_status</a> <a name="a10"></a><a class="code" href="_a_r_m_2arm__dotproduct__example__f32_8c.html#a88ccb294236ab22b00310c47164c53c3">status</a>;</div>
<div class="line"></div>
<div class="line"> <span class="comment">/* Initialise A Matrix Instance with numRows, numCols and data array(A_f32) */</span></div>
<div class="line"> srcRows = 4;</div>
<div class="line"> srcColumns = 4;</div>
<div class="line"> <a name="a11"></a><a class="code" href="group___matrix_init.html#ga11e3dc41592a6401c13182fef9416a27" title="Floating-point matrix initialization.">arm_mat_init_f32</a>(&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>);</div>
<div class="line"></div>
<div class="line"> <span class="comment">/* Initialise Matrix Instance AT with numRows, numCols and data array(AT_f32) */</span></div>
<div class="line"> srcRows = 4;</div>
<div class="line"> srcColumns = 4;</div>
<div class="line"> <a class="code" href="group___matrix_init.html#ga11e3dc41592a6401c13182fef9416a27" title="Floating-point matrix initialization.">arm_mat_init_f32</a>(&AT, srcRows, srcColumns, <a class="code" href="arm__matrix__example__f32_8c.html#a46dc2aa6dfc692af7b4a1379d7329ccd">AT_f32</a>);</div>
<div class="line"></div>
<div class="line"> <span class="comment">/* calculation of A transpose */</span></div>
<div class="line"> status = <a name="a12"></a><a class="code" href="group___matrix_trans.html#gad7dd9f108429da13d3864696ceeec789" title="Floating-point matrix transpose.">arm_mat_trans_f32</a>(&A, &AT);</div>
<div class="line"></div>
<div class="line"></div>
<div class="line"> <span class="comment">/* Initialise ATMA Matrix Instance with numRows, numCols and data array(ATMA_f32) */</span></div>
<div class="line"> srcRows = 4;</div>
<div class="line"> srcColumns = 4;</div>
<div class="line"> <a class="code" href="group___matrix_init.html#ga11e3dc41592a6401c13182fef9416a27" title="Floating-point matrix initialization.">arm_mat_init_f32</a>(&ATMA, srcRows, srcColumns, <a class="code" href="arm__matrix__example__f32_8c.html#a867497c6bf86014513bf2ad3551aa896">ATMA_f32</a>);</div>
<div class="line"></div>
<div class="line"> <span class="comment">/* calculation of AT Multiply with A */</span></div>
<div class="line"> status = <a name="a13"></a><a class="code" href="group___matrix_mult.html#ga917bf0270310c1d3f0eda1fc7c0026a0" title="Floating-point matrix multiplication.">arm_mat_mult_f32</a>(&AT, &A, &ATMA);</div>
<div class="line"></div>
<div class="line"> <span class="comment">/* Initialise ATMAI Matrix Instance with numRows, numCols and data array(ATMAI_f32) */</span></div>
<div class="line"> srcRows = 4;</div>
<div class="line"> srcColumns = 4;</div>
<div class="line"> <a class="code" href="group___matrix_init.html#ga11e3dc41592a6401c13182fef9416a27" title="Floating-point matrix initialization.">arm_mat_init_f32</a>(&ATMAI, srcRows, srcColumns, <a class="code" href="arm__matrix__example__f32_8c.html#a44425c149c52b326a3b7a77676686f00">ATMAI_f32</a>);</div>
<div class="line"></div>
<div class="line"> <span class="comment">/* calculation of Inverse((Transpose(A) * A) */</span></div>
<div class="line"> status = <a name="a14"></a><a class="code" href="group___matrix_inv.html#ga542be7aabbf7a2297a4b62cf212910e3" title="Floating-point matrix inverse.">arm_mat_inverse_f32</a>(&ATMA, &ATMAI);</div>
<div class="line"></div>
<div class="line"> <span class="comment">/* calculation of (Inverse((Transpose(A) * A)) * Transpose(A)) */</span></div>
<div class="line"> status = <a class="code" href="group___matrix_mult.html#ga917bf0270310c1d3f0eda1fc7c0026a0" title="Floating-point matrix multiplication.">arm_mat_mult_f32</a>(&ATMAI, &AT, &ATMA);</div>
<div class="line"></div>
<div class="line"> <span class="comment">/* Initialise B Matrix Instance with numRows, numCols and data array(B_f32) */</span></div>
<div class="line"> srcRows = 4;</div>
<div class="line"> srcColumns = 1;</div>
<div class="line"> <a class="code" href="group___matrix_init.html#ga11e3dc41592a6401c13182fef9416a27" title="Floating-point matrix initialization.">arm_mat_init_f32</a>(&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>);</div>
<div class="line"></div>
<div class="line"> <span class="comment">/* Initialise X Matrix Instance with numRows, numCols and data array(X_f32) */</span></div>
<div class="line"> srcRows = 4;</div>
<div class="line"> srcColumns = 1;</div>
<div class="line"> <a class="code" href="group___matrix_init.html#ga11e3dc41592a6401c13182fef9416a27" title="Floating-point matrix initialization.">arm_mat_init_f32</a>(&X, srcRows, srcColumns, <a class="code" href="arm__matrix__example__f32_8c.html#a98c67c0fc0cb5f2df51b21482d31d21c">X_f32</a>);</div>
<div class="line"></div>
<div class="line"> <span class="comment">/* calculation ((Inverse((Transpose(A) * A)) * Transpose(A)) * B) */</span></div>
<div class="line"> status = <a class="code" href="group___matrix_mult.html#ga917bf0270310c1d3f0eda1fc7c0026a0" title="Floating-point matrix multiplication.">arm_mat_mult_f32</a>(&ATMA, &B, &X);</div>
<div class="line"></div>
<div class="line"> <span class="comment">/* Comparison of reference with test output */</span></div>
<div class="line"> <a class="code" href="_a_r_m_2arm__convolution__example__f32_8c.html#af06013f588a7003278de222913c9d819">snr</a> = <a name="a15"></a><a class="code" href="arm__convolution__example_2_a_r_m_2math__helper_8c.html#aeea2952e70a1040a6efa555564bbeeab" title="Caluclation of SNR.">arm_snr_f32</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#a6184758419722fa16bb883097c2f596b">xRef_f32</a>, <a class="code" href="arm__matrix__example__f32_8c.html#a98c67c0fc0cb5f2df51b21482d31d21c">X_f32</a>, 4);</div>
<div class="line"></div>
<div class="line"> <span class="comment">/*------------------------------------------------------------------------------</span></div>
<div class="line"><span class="comment"> * Initialise status depending on SNR calculations</span></div>
<div class="line"><span class="comment"> *------------------------------------------------------------------------------*/</span></div>
<div class="line"> <span class="keywordflow">if</span>( <a class="code" href="_a_r_m_2arm__convolution__example__f32_8c.html#af06013f588a7003278de222913c9d819">snr</a> > <a name="a16"></a><a class="code" href="_a_r_m_2arm__convolution__example__f32_8c.html#af08ec3fef897d77c6817638bf0e0c5c6">SNR_THRESHOLD</a>)</div>
<div class="line"> {</div>
<div class="line"> status = <a name="a17"></a><a class="code" href="arm__math_8h.html#a5e459c6409dfcd2927bb8a57491d7cf6a9f8b2a10bd827fb4600e77d455902eb0">ARM_MATH_SUCCESS</a>;</div>
<div class="line"> }</div>
<div class="line"> <span class="keywordflow">else</span></div>
<div class="line"> {</div>
<div class="line"> status = <a name="a18"></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"></div>
<div class="line"> <span class="comment">/* ----------------------------------------------------------------------</span></div>
<div class="line"><span class="comment"> ** Loop here if the signals fail the PASS check.</span></div>
<div class="line"><span class="comment"> ** This denotes a test failure</span></div>
<div class="line"><span class="comment"> ** ------------------------------------------------------------------- */</span></div>
<div class="line"> <span class="keywordflow">if</span>( status != <a class="code" href="arm__math_8h.html#a5e459c6409dfcd2927bb8a57491d7cf6a9f8b2a10bd827fb4600e77d455902eb0">ARM_MATH_SUCCESS</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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