NAG and NEC have had agreements for many years to make the NAG Fortran Library available on the latest NEC supercomputers. The latest agreement makes multiple versions of the Fortran Library available on the SX-4 and SX-5 (and hence SX-6) series.
If the software you want does not appear to be available for your computer, please contact NAG. A version may be planned or nearly ready. If not, registering your interest helps NAG plan future versions and may ensure future availability.