What is the POSIX feature according to Microsoft?

Question

I am reading the old C code for dos (1992), in this code I found a call filelength.

I found out about this MSDN feature :

This POSIX feature has been deprecated since Visual C ++ 2005. Use ISO C ++ instead _filelength.

I am trying to find more about this feature in the POSIX documentation, but I have not found anything but the MSDN link.

So:

• What does “POSIX” mean in this context?
• Does this feature exist from Microsoft libraries?

Answer 1

POSIX - " ", , UNIX. , API POSIX , API-, POSIX, , , UNIX, POSIX .

, filelength C, . , , , , , , .

POSIX, , "POSIX.1: Core Services" , , filelength. , Microsoft POSIX , , Microsoft POSIX , . POSIX.1, ( ).

POSIX.1 7. 2008 "IEEE Std 1003.1", . api POSIX.1.

API-, POSIX, stat(char* filename, (struct stat*) s), , st.st_size, , (fseek), ftell.