exp2
====

POSIX specification:
 https://pubs.opengroup.org/onlinepubs/9699919799/functions/exp2.html

Gnulib module: exp2

Portability problems fixed by Gnulib:

  * This function is missing on some platforms: FreeBSD 5.2.1, NetBSD 5.0, OpenBSD 3.8, Minix 3.1.8, AIX 5.1, older IRIX 6.5, Solaris 9, MSVC 9.

  * This function is not declared on some platforms: IRIX 6.5.

  * This function returns grossly wrong results on some platforms: OpenBSD 4.9.

Portability problems not fixed by Gnulib: