汇编语句，用于分段函数的计算。并进行一些改进。-Assembler statements for the calculation of the piecewise function. And some improvements.

一个简单的绘制分段函数图象的程序，可以根据自己的需要进行对应的参数修改。-A simple drawing of the image of the piecewise function, you can modify the corresponding parameters according to their needs.