Toom-4.5 (aka Toom-5x4, Toom-6x3, Toom-7x2)

[Torbjorn Granlund]

nisse at lysator.liu.se (Niels Möller) writes:

  And one could still use two calls to mpn_bdiv_dbm1c for the special
  divisors where that works, which if I got your numbers right would be
  one or two cycles faster per limb.
  
In order to determine whether that would be beneficial, we would need to
add measurements to tuneup of these alternatives.

-- 
Torbjörn