CMSIS DSP Software Library: arm_class_marks_example_f32.c Source File Main Page Modules Data Structures Files Examples File List Globals arm_class_marks_example_f32.c Go to the documentation of this file.00001 /* ---------------------------------------------------------------------- 00002 * Copyright (C) 2010 ARM Limited. All rights reserved. 00003 * 00004 * $Date: 29. November 2010 00005 * $Revision: V1.0.3 00006 * 00007 * Project: CMSIS DSP Library 00008 * Title: arm_class_marks_example_f32.c 00009 * 00010 * Description: Example code to calculate Minimum, Maximum 00011 * Mean, std and variance of marks obtained in a class 00012 * 00013 * Target Processor: Cortex-M4/Cortex-M3 00014 * 00015 * Version 1.0.3 2010/11/29 00016 * Re-organized the CMSIS folders and updated documentation. 00017 * 00018 * Version 1.0.1 2010/10/05 KK 00019 * Production release and review comments incorporated. 00020 * 00021 * Version 1.0.0 2010/09/20 KK 00022 * Production release and review comments incorporated. 00023 * ------------------------------------------------------------------- */ 00024 00067 #include "arm_math.h" 00068 00069 #define USE_STATIC_INIT 00070 00071 /* ---------------------------------------------------------------------- 00072 ** Global defines 00073 ** ------------------------------------------------------------------- */ 00074 00075 #define TEST_LENGTH_SAMPLES (20*4) 00076 00077 /* ---------------------------------------------------------------------- 00078 ** List of Marks scored by 20 students for 4 subjects 00079 ** ------------------------------------------------------------------- */ 00080 const float32_t testMarks_f32[TEST_LENGTH_SAMPLES] = 00081 { 00082 42.000000, 37.000000, 81.000000, 28.000000, 00083 83.000000, 72.000000, 36.000000, 38.000000, 00084 32.000000, 51.000000, 63.000000, 64.000000, 00085 97.000000, 82.000000, 95.000000, 90.000000, 00086 66.000000, 51.000000, 54.000000, 42.000000, 00087 67.000000, 56.000000, 45.000000, 57.000000, 00088 67.000000, 69.000000, 35.000000, 52.000000, 00089 29.000000, 81.000000, 58.000000, 47.000000, 00090 38.000000, 76.000000, 100.000000, 29.000000, 00091 33.000000, 47.000000, 29.000000, 50.000000, 00092 34.000000, 41.000000, 61.000000, 46.000000, 00093 52.000000, 50.000000, 48.000000, 36.000000, 00094 47.000000, 55.000000, 44.000000, 40.000000, 00095 100.000000, 94.000000, 84.000000, 37.000000, 00096 32.000000, 71.000000, 47.000000, 77.000000, 00097 31.000000, 50.000000, 49.000000, 35.000000, 00098 63.000000, 67.000000, 40.000000, 31.000000, 00099 29.000000, 68.000000, 61.000000, 38.000000, 00100 31.000000, 28.000000, 28.000000, 76.000000, 00101 55.000000, 33.000000, 29.000000, 39.000000 00102 }; 00103 00104 00105 /* ---------------------------------------------------------------------- 00106 * Number of subjects X 1 00107 * ------------------------------------------------------------------- */ 00108 const float32_t testUnity_f32[4] = 00109 { 00110 1.000, 1.000, 1.000, 1.000 00111 }; 00112 00113 00114 /* ---------------------------------------------------------------------- 00115 ** f32 Output buffer 00116 ** ------------------------------------------------------------------- */ 00117 static float32_t testOutput[TEST_LENGTH_SAMPLES]; 00118 00119 00120 /* ------------------------------------------------------------------ 00121 * Global defines 00122 *------------------------------------------------------------------- */ 00123 #define NUMSTUDENTS 20 00124 #define NUMSUBJECTS 4 00125 00126 /* ------------------------------------------------------------------ 00127 * Global variables 00128 *------------------------------------------------------------------- */ 00129 00130 uint32_t numStudents = 20; 00131 uint32_t numSubjects = 4; 00132 float32_t max_marks, min_marks, mean, std, var; 00133 uint32_t student_num; 00134 00135 /* ---------------------------------------------------------------------------------- 00136 * Main f32 test function. It returns maximum marks secured and student number 00137 * ------------------------------------------------------------------------------- */ 00138 00139 int32_t main() 00140 { 00141 00142 #ifndef USE_STATIC_INIT 00143 00144 arm_matrix_instance_f32 srcA; 00145 arm_matrix_instance_f32 srcB; 00146 arm_matrix_instance_f32 dstC; 00147 00148 /* Input and output matrices initializations */ 00149 arm_mat_init_f32(&srcA, numStudents, numSubjects, (float32_t *)testMarks_f32); 00150 arm_mat_init_f32(&srcB, numSubjects, 1, (float32_t *)testUnity_f32); 00151 arm_mat_init_f32(&dstC, numStudents, 1, testOutput); 00152 00153 #else 00154 00155 /* Static Initializations of Input and output matrix sizes and array */ 00156 arm_matrix_instance_f32 srcA = {NUMSTUDENTS, NUMSUBJECTS, (float32_t *)testMarks_f32}; 00157 arm_matrix_instance_f32 srcB = {NUMSUBJECTS, 1, (float32_t *)testUnity_f32}; 00158 arm_matrix_instance_f32 dstC = {NUMSTUDENTS, 1, testOutput}; 00159 00160 #endif 00161 00162 00163 /* ---------------------------------------------------------------------- 00164 *Call the Matrix multiplication process function 00165 * ------------------------------------------------------------------- */ 00166 arm_mat_mult_f32(&srcA, &srcB, &dstC); 00167 00168 /* ---------------------------------------------------------------------- 00169 ** Call the Max function to calculate max marks among numStudents 00170 ** ------------------------------------------------------------------- */ 00171 arm_max_f32(testOutput, numStudents, &max_marks, &student_num); 00172 00173 /* ---------------------------------------------------------------------- 00174 ** Call the Min function to calculate min marks among numStudents 00175 ** ------------------------------------------------------------------- */ 00176 arm_min_f32(testOutput, numStudents, &min_marks, &student_num); 00177 00178 /* ---------------------------------------------------------------------- 00179 ** Call the Mean function to calculate mean 00180 ** ------------------------------------------------------------------- */ 00181 arm_mean_f32(testOutput, numStudents, &mean); 00182 00183 /* ---------------------------------------------------------------------- 00184 ** Call the std function to calculate standard deviation 00185 ** ------------------------------------------------------------------- */ 00186 arm_std_f32(testOutput, numStudents, &std); 00187 00188 /* ---------------------------------------------------------------------- 00189 ** Call the var function to calculate variance 00190 ** ------------------------------------------------------------------- */ 00191 arm_var_f32(testOutput, numStudents, &var); 00192 00193 } 00194 00195  All Data Structures Files Functions Variables Typedefs Enumerations Enumerator Defines Generated on Mon Nov 29 2010 17:19:55 for CMSIS DSP Software Library by  1.7.2