[Python-ideas] Decimal literal?
tjreedy at udel.edu
Thu Dec 4 23:09:36 CET 2008
Leif Walsh wrote:
> Coming in to the thread _way_ late, here's my $0.015:
> Sure, it would be great to have an accurate and fast implementation of
> decimal/floating point numbers active by default in the language.
We have one by many definitions of 'accurate'. Being off by a few or
even a hundred parts per quintillion is pretty good by some standards.
> We don't have that yet.
> We have a fast implementation, and we have an
> accurate one, and until we have both, there is a decision to be made:
The notion that decimal is more 'accurate' than float needs a lot of
qualification. Yes, it is intended to give *exactly* the answer to
various financial calculations that various jurisdictions mandate, but
that is a rather specialized meaning of 'accurate'.
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