A perfect power, and then?

[Niels Möller]

Torbjorn Granlund <tg at gmplib.org> writes:

> Do you have a proposal for two separate functions?

I'll think about it...

> Perhaps broot.c should use Niels' function instead, I cannot recall
> the differences, if any.

My bsqrt uses an iteration converging to a^{-1/2}, and broot uses an
iteration converging to a^{1/n - 1}. Both division free.

They should use mulmod_bnm1 rather than mullo for larger sizes, but they
currently don't. I haven't done any serious benchmarking.

/Niels

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