isinf
=====

POSIX specification:
 http://www.opengroup.org/onlinepubs/9699919799/functions/isinf.html

Gnulib module: isinf

Portability problems fixed by Gnulib:

  * This macro is missing on some platforms: AIX 4.3.2, IRIX 6.5, OSF/1 5.1, Solaris 11 2010-11.

Portability problems not fixed by Gnulib: