What is the history of the IEEE POSIX 1003.1 System Application Interface (C API) ?
Historically, POSIX 1003.1 has been the base standard upon which the POSIX family of standards has been built. In keeping with its original focus on the UNIX system, it is aimed at interactive timesharing computing environments. The first edition of IEEE Std 1003.1 was published in 1988. Subsequent editions were published in 1990, 1996 and 2001. The 1990 edition was a revision to the 1988 edition and became the stable base standard onto which further amendments were added. The 1990 edition was also approved as an international standard, ISO/IEC 9945-1:1990. The 1996 edition added the IEEE Std 1003.1b-1993, IEEE Std 1003.1c-1995, and 1003.1i-1995 amendments to the base standard, keeping the stable core text unchanged. The 1996 edition of IEEE Std 1003.1 was also approved as an international standard, ISO/IEC 9945-1:1996. In 1998 the first real-time profile standard, IEEE Std 1003.
