9.408 ilogb
POSIX specification:
http://www.opengroup.org/onlinepubs/9699919799/functions/ilogb.html
Gnulib module: ilogb
Portability problems fixed by Gnulib:
- This function is missing on some platforms:
Minix 3.1.8, IRIX 5.3, MSVC 9.
- This function returns a wrong result for a zero argument on some platforms:
OpenBSD 4.9, AIX 5.1.
- This function returns a wrong result for an infinite argument on some platforms:
NetBSD 5.1, OpenBSD 4.9.
- This function returns a wrong result for a NaN argument on some platforms:
OpenBSD 4.9.
Portability problems not fixed by Gnulib: