missing inet_pton in ws2tcpip.h

Hi, while trying to compile a C program, I noticed that inet_pton() is not present in ws2tcpip.h.

The documentation from Microsoft is here:
http://msdn.microsoft.com/en-us/library/windows/desktop/cc805844\(v=vs.85).aspx

INT WSAAPI inet_pton(
__in INT Family,
__in PCTSTR pszAddrString,
__out PVOID pAddrBuf
);

Could this and similar functions be added to ws2tcpip.h?

Thank you for your help.