csky_class_marks_example

/* ----------------------------------------------------------------------
* Copyright (C) 2016-2016 CSKY Limited. All rights reserved.
*
* Project:       CSI DSP Library
* Title:         csky_class_marks_example_f32.c
*
* Description:   Example code to calculate Minimum, Maximum
*                Mean, std and variance of marks obtained in a class
*
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*   - Redistributions of source code must retain the above copyright
*     notice, this list of conditions and the following disclaimer.
*   - Redistributions in binary form must reproduce the above copyright
*     notice, this list of conditions and the following disclaimer in
*     the documentation and/or other materials provided with the
*     distribution.
*   - Neither the name of CSKY LIMITED nor the names of its contributors
*     may be used to endorse or promote products derived from this
*     software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
* -------------------------------------------------------------------- */
#include "csky_math.h"
#define USE_STATIC_INIT
 /* ----------------------------------------------------------------------
** 全局定义
** ------------------------------------------------------------------- */
#define TEST_LENGTH_SAMPLES   (20*4)
/* ----------------------------------------------------------------------
** 罗列了20名学生4门课的成绩
** ------------------------------------------------------------------- */
const float32_t testMarks_f32[TEST_LENGTH_SAMPLES] =
{
  42.000000,  37.000000,  81.000000,  28.000000,
  83.000000,  72.000000,  36.000000,  38.000000,
  32.000000,  51.000000,  63.000000,  64.000000,
  97.000000,  82.000000,  95.000000,  90.000000,
  66.000000,  51.000000,  54.000000,  42.000000,
  67.000000,  56.000000,  45.000000,  57.000000,
  67.000000,  69.000000,  35.000000,  52.000000,
  29.000000,  81.000000,  58.000000,  47.000000,
  38.000000,  76.000000, 100.000000,  29.000000,
  33.000000,  47.000000,  29.000000,  50.000000,
  34.000000,  41.000000,  61.000000,  46.000000,
  52.000000,  50.000000,  48.000000,  36.000000,
  47.000000,  55.000000,  44.000000,  40.000000,
 100.000000,  94.000000,  84.000000,  37.000000,
  32.000000,  71.000000,  47.000000,  77.000000,
  31.000000,  50.000000,  49.000000,  35.000000,
  63.000000,  67.000000,  40.000000,  31.000000,
  29.000000,  68.000000,  61.000000,  38.000000,
  31.000000,  28.000000,  28.000000,  76.000000,
  55.000000,  33.000000,  29.000000,  39.000000
};
/* ----------------------------------------------------------------------
* 测试的学科数量 X 1
* ------------------------------------------------------------------- */
const float32_t testUnity_f32[4] =
{
  1.000,  1.000,   1.000,  1.000
};
/* ----------------------------------------------------------------------
** f32 输出缓存
** ------------------------------------------------------------------- */
static float32_t testOutput[TEST_LENGTH_SAMPLES];
/* ------------------------------------------------------------------
* 全局定义
*------------------------------------------------------------------- */
#define   NUMSTUDENTS  20
#define     NUMSUBJECTS  4
/* ------------------------------------------------------------------
* 全局变量
*------------------------------------------------------------------- */
 uint32_t    numStudents = 20;
 uint32_t    numSubjects = 4;
float32_t    max_marks, min_marks, mean, std, var;
 uint32_t    student_num;
/* ----------------------------------------------------------------------------------
* 测试f32类型的函数
* ------------------------------------------------------------------------------- */
int32_t main()
{
#ifndef  USE_STATIC_INIT
  csky_matrix_instance_f32 srcA;
  csky_matrix_instance_f32 srcB;
  csky_matrix_instance_f32 dstC;
  /* 初始化输入输出矩阵 */
  csky_mat_init_f32(&srcA, numStudents, numSubjects, (float32_t *)testMarks_f32);
  csky_mat_init_f32(&srcB, numSubjects, 1, (float32_t *)testUnity_f32);
  csky_mat_init_f32(&dstC, numStudents, 1, testOutput);
#else
  /* 静态初始化输入输出矩阵大小和数组 */
  csky_matrix_instance_f32 srcA = {NUMSTUDENTS, NUMSUBJECTS, (float32_t *)testMarks_f32};
  csky_matrix_instance_f32 srcB = {NUMSUBJECTS, 1, (float32_t *)testUnity_f32};
  csky_matrix_instance_f32 dstC = {NUMSTUDENTS, 1, testOutput};
#endif
  /* ----------------------------------------------------------------------
  * 调用矩阵乘法处理函数
  * ------------------------------------------------------------------- */
  csky_mat_mult_f32(&srcA, &srcB, &dstC);
  /* ----------------------------------------------------------------------
  ** 调用最大值函数计算最高分
  ** ------------------------------------------------------------------- */
  csky_max_f32(testOutput, numStudents, &max_marks, &student_num);
  /* ----------------------------------------------------------------------
  ** 调用最小值函数计算最低分
  ** ------------------------------------------------------------------- */
  csky_min_f32(testOutput, numStudents, &min_marks, &student_num);
  /* ----------------------------------------------------------------------
  ** 调用平均值函数取平均值
  ** ------------------------------------------------------------------- */
  csky_mean_f32(testOutput, numStudents, &mean);
  /* ----------------------------------------------------------------------
  ** 调用标准差函数求标准差
  ** ------------------------------------------------------------------- */
  csky_std_f32(testOutput, numStudents, &std);
  /* ----------------------------------------------------------------------
  ** 调用方差函数求方差
  ** ------------------------------------------------------------------- */
  csky_var_f32(testOutput, numStudents, &var);
  while(1);                             /* main函数不会返回 */
}