[Ecls-list] Latest fixes

[Waldek Hebisch]

Thanks for fixes and information.  However, it looks that the
latest atan fix may have some bad effects.  Namely, current
version gives me:

> (atan (complex 0.7d0 1.1d0))

#C(0.6954714135012092d0 -0.2240220061391589d0)
> (tan (atan (complex 0.7d0 1.1d0)))

#C(0.7680798004987534d0 -0.36159600997506236d0)

which is incorrect.  Previous version gave:

(atan (complex 0.7d0 1.1d0))

#C(1.0172219678978516d0 0.5705955964191316d0)

which is correct.

-- 
                              Waldek Hebisch
hebisch at math.uni.wroc.pl