[issue27761] Private _nth_root function loses accuracy

[STINNER Victor]

STINNER Victor added the comment:

> floor_nroot does arithmetic with integers of bit-length approximately 54*n.

Oh, I see.

But maybe the Decimal is fast enough for such giant numbers, since we
can control the precision?

----------

_______________________________________
Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue27761>
_______________________________________