HI Alex,

> larger "digits". So I rewrote it, so that a single BCD digit is no
> longer a byte, but a complete word, holding 9 BCD digits on 32 bits, and
> 18 digits on 64 bits.
>
> This helped a lot! The 634 seconds reduced to 37 seconds, a 17-fold
> speed improvement :-)

great!  Does it mean that the speed is proportional to the number of
digits processed in one go, i.e. about 9 times faster on a 32 system and
about 18 times faster on a 64 bit system?  I guess there must be other
trick as the printing time was negligible using gmp.

Cheers,

Tomas
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