important change in mpfr

[Torbjorn Granlund]

Paul.Zimmermann at loria.fr (Paul Zimmermann) writes:

  We strongly request the GMP developers to anticipate that decimal change too.
  This will boost all applications of GMP and MPFR to bank accounting.
  
I must say that I think is a very serious mistake.  Decimal
arithmetic is known to be very inefficient!

For GMP 5, we will use base-100 arithmetic throughout (except in
the input an doutput functions that will accept binary numbers).
Base-100 will be ten times faster than base-10, of course.

-- 
Torbjörn