enhance_composite_SFunction_sigma

定义一个结构体变量（包括年、月、日），计算该日在本年中为第几天？（注意考虑闰年问题），要求写一个函数days，实现上面的计算。由主函数将年月日传递给days函数，计算后将日子传递回主函数输出(Define a structure variable (including the year, month, day), calculated on that day in the middle of this year for the first few days? (Note that the leap to consider the issue), asked to write a function of days, to achieve the above calculations. By the main function will be passed to the days date function to calculate the days will pass back to the main function of the output)

在matlab中用ROMBERG方法求二重积分(Seeking double integral using Romberg method in matlab)

说明：  这是一个伽玛图像校正程序，首先读入原始图像，然后利用事先在matlab中计算得到的对每个灰度值校正后的数值替代原灰度值即可。(this is a gama image revising program. it uses revised grey level obtained from matlab to substitute original image data to fulfill this task.)

将Matlab复杂语言转化成C语言开发,并且将转化的语言进行进一步的优化(To change Matlab into C，and make the change more super and simply)

一段Matlab代码，能够实现Matlab绘制的波形在AutoCAD下绘制出来(A Matlab code, Matlab drawn waveform drawing in AutoCAD)

说明：  MK四轴飞控源代码,MK四轴飞控源代码,MK四轴飞控源代码(Flight control source code of MK quadrotor)

用C编写的数字滤波器源程序，里面包含数字滤波器原理及相关设计文档(Digital filter written in C source code, which includes a digital filter design principles and related documents)

希尔伯特变换的c程序完整代码，可以实现相应功能(Hilbert transform of the c program code integrity, you can realize the corresponding function)

IIR数字滤波器的设计 上学的时候一直不知道如何用C语言来编写IIR滤波器，终于找到了，上传给大家 希望能帮到大家。(IIR digital filter design when the school did not know how to use C language to write IIR filters, and finally found it, upload to hope to help you.)

随机产生一个信源概率空间，并对其进行香农编码，输出码长和编码(shannon coding)