"Steven G. Johnson" <stev...@alum.mit.edu> wrote in message
news:bunj9a$hts$1@news.fas.harvard.edu...

The best I know of is 912 additions and 240 multiplications; just
figured out how to achieve this result yesterday.  Algorithm is
the same as used for all my computational kernals (heavy use of
real-half-complex DFTs,) just became aware of another possible trick.

The lowest known by anyone is a different question.  The more you
look at DFTs, the more you become uncertain that what you or anyone
else does is optimal, even if you get to write the criteria of
optimality yourself.

--
write(*,*) transfer((/17.392111325966148d0,6.5794487871554595D-85, &
6.0134700243160014d-154/),(/'x'/)); end