@node ceill
@subsection @code{ceill}
@findex ceill

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

Gnulib module: ceill or ceill-ieee
@mindex ceill
@mindex ceill-ieee

Portability problems fixed by either Gnulib module @code{ceill} or @code{ceill-ieee}:
@itemize
@item
This function is missing on some platforms:
FreeBSD 5.2.1, NetBSD 5.0, OpenBSD 3.8, Minix 3.1.8, HP-UX 11, Solaris 9, Cygwin 1.7.x.
@item
This function is only defined as a macro with arguments on some platforms:
MSVC 14.
@item
This function returns a wrong result for small arguments on some platforms:
OpenBSD 5.6.
@end itemize

Portability problems fixed by Gnulib module @code{ceill-ieee}:
@itemize
@end itemize

Portability problems not fixed by Gnulib:
@itemize
@end itemize
