@itemize
@item
This function is missing on some platforms:
-FreeBSD 5.2.1, NetBSD 5.0, OpenBSD 3.8, AIX 5.1, HP-UX 11, IRIX 6.5, Solaris 9, Cygwin, Interix 3.5, BeOS.
+FreeBSD 5.2.1, NetBSD 5.0, OpenBSD 3.8, Minix 3.1.8, AIX 5.1, HP-UX 11, IRIX 6.5, Solaris 9, Cygwin, MSVC 9, Interix 3.5, BeOS.
@item
This function is not declared (without @code{-D_GNU_SOURCE}) on some platforms:
glibc 2.8.
Portability problems fixed by Gnulib module @code{truncl-ieee}:
@itemize
@item
-This function returns a positive zero for an argument between -1 and 0
+This function returns a positive zero for an argument between @minus{}1 and 0
on some platforms:
OSF/1 5.1.
@end itemize