@node nan
@subsection @code{nan}
@findex nan

POSIX specification:@* @url{https://pubs.opengroup.org/onlinepubs/9799919799/functions/nan.html}

Gnulib module: ---

Portability problems fixed by Gnulib:
@itemize
@end itemize

Portability problems not fixed by Gnulib:
@itemize
@item
This function is missing on some platforms:
FreeBSD 6.0, NetBSD 3.0, OpenBSD 3.8, Minix 3.1.8, AIX 5.1, Solaris 9, MSVC 9.
@end itemize
