POSIX specification:@* @url{http://www.opengroup.org/onlinepubs/9699919799/functions/fmodl.html}
-Gnulib module: fmodl
+Gnulib module: fmodl or fmodl-ieee
-Portability problems fixed by Gnulib:
+Portability problems fixed by either Gnulib module @code{fmodl} or @code{fmodl-ieee}:
@itemize
@item
This function is missing on some platforms:
AIX 5.1.
@end itemize
+Portability problems fixed by Gnulib module @code{fmodl-ieee}:
+@itemize
+@item
+This function has problems when the second argument is zero on some platforms:
+OSF/1 5.1.
+@item
+This function has problems when the first argument is minus zero on some
+platforms:
+MSVC 9.
+@end itemize
+
Portability problems not fixed by Gnulib:
@itemize
@end itemize