5 POSIX specification:@* @url{https://pubs.opengroup.org/onlinepubs/9699919799/functions/log2f.html}
7 Gnulib module: log2f or log2f-ieee
9 Portability problems fixed by either Gnulib module @code{log2f} or @code{log2f-ieee}:
12 This function is missing on some platforms:
13 FreeBSD 6.0, NetBSD 3.0, OpenBSD 3.8, Minix 3.1.8, AIX 5.1, Solaris 9, MSVC 9, Android 4.2.
15 This function is only provided as a macro on some platforms:
18 This function returns slightly wrong values for exact powers of 2 on some platforms:
22 Portability problems fixed by Gnulib module @code{log2f-ieee}:
25 This function returns a wrong value for a negative argument on some platforms:
26 NetBSD 5.1, Solaris 10/x86_64.
29 Portability problems not fixed by Gnulib: