库函数的源代码，该函数集省略了不少TC标准头文件，读者使用时要自行添加。而且由于该函数集内部函数间有的有调用关系，读者拆卸时要谨慎。-Library function source code, the function sets omit a lot of TC standard header file, and readers use to add their own. And because the function sets the internal function has called the relationship between some readers to be careful when demolition.