Declares the functions
Gnulib module: —
Portability problems fixed by Gnulib:
- This header file is missing on some platforms:
FreeBSD 6.0, NetBSD 5.0, OpenBSD 6.7, Minix 3.1.8, AIX 5.1, HP-UX 11, IRIX 6.5, Solaris 10, Cygwin, mingw, MSVC 14, Android 9.0.
Portability problems not fixed by Gnulib:
- On platforms where the header file is missing,
the Gnulib substitute implementation is just a stub,
and does nothing.