API文档
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.. toctree::
   :maxdepth: 1
   :caption: 目录
   
   api-list/ctype
   api-list/dirent
   api-list/errno
   api-list/fcntl
   api-list/math
   api-list/stdio
   api-list/printf
   api-list/stddef
   api-list/stdlib
   api-list/string
   api-list/time
   api-list/unistd
   
这里是所有libc头文件的集合,在代码里可以这样引用:  
``#include<libc/src/xxx.h>``  
