@itemize
@item
This function is missing on some platforms:
-Minix 3.1.8, AIX 5.1, HP-UX 11, Solaris 9, MSVC 9.
+Minix 3.1.8, AIX 5.1, HP-UX 11, Solaris 9.
+@item
+This function is only defined as a macro with arguments on some platforms:
+MSVC 9.
@end itemize
Portability problems fixed by Gnulib module @code{ceilf-ieee}: