---

10.237 exp2l

POSIX specification:
https://pubs.opengroup.org/onlinepubs/9699919799/functions/exp2l.html

Gnulib module: exp2l or exp2l-ieee

Portability problems fixed by either Gnulib module exp2l or exp2l-ieee:

• This function is missing on some platforms: FreeBSD 6.0, NetBSD 5.0, OpenBSD 3.8, Minix 3.1.8, AIX 5.1, HP-UX 11, Solaris 9, Cygwin 1.7.x, MSVC 9, Android 4.4.
• This function returns Infinity instead of large finite values on some platforms: NetBSD 10.0/i386.
• This function produces results which are accurate to only 16 digits on some platforms: NetBSD 10.0/x86_64.

Portability problems fixed by Gnulib module exp2l-ieee:

• This function returns a wrong value for a NaN argument on some platforms: OpenBSD 4.9.

Portability problems not fixed by Gnulib: