@section @code{isfinite}
@findex isfinite
-POSIX specification: @url{http://www.opengroup.org/susv3xsh/isfinite.html}
+POSIX specification: @url{http://www.opengroup.org/onlinepubs/9699919799/functions/isfinite.html}
Gnulib module: isfinite
@item
This macro is missing on some platforms:
MacOS X 10.3, OpenBSD 3.8, AIX 5.1, IRIX 6.5, OSF/1 5.1, Solaris 10, Interix 3.5.
+@item
+This macro incorrectly yields true for some @samp{double} arguments, on some
+platforms:
+Linux/ia64 (signalling NaNs).
+@item
+This macro incorrectly yields true for some @samp{long double} arguments, on
+some platforms:
+x86 (pseudo-zeroes, unnormalized numbers, pseudo-denormals),
+x86_64 (pseudo-denormals),
+ia64 (pseudo-NaN, pseudo-Infinity, pseudo-zeroes, unnormalized numbers, pseudo-denormals).
@end itemize
Portability problems not fixed by Gnulib: