@itemize
@item
This function is missing on some platforms:
-FreeBSD 5.2.1, OpenBSD 3.8, AIX 5.1, HP-UX 11, IRIX 6.5, OSF/1 4.0, Solaris 9, Cygwin, Interix 3.5.
+FreeBSD 5.2.1, OpenBSD 3.8, AIX 5.1, HP-UX 11, IRIX 6.5, OSF/1 4.0,
+Solaris 9, Cygwin 1.5.x, Interix 3.5.
@end itemize