9.399 hypotf

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

Gnulib module: hypotf or hypotf-ieee

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

• This function is missing on some platforms: Minix 3.1.8, AIX 5.1, HP-UX 11, Solaris 9, MSVC 9.
• This function produces wrong values on some platforms: NetBSD 5.1, OpenBSD 4.9.

Portability problems fixed by Gnulib module hypot-ieee:

• When the arguments are mixed NaN and Infinity, this function returns a wrong value on some platforms: OSF/1 5.1, mingw, MSVC 9.

Portability problems not fixed by Gnulib: