Against PEP 240

[Aahz Maruch]

In article <3B1674D8.67690A5A at san.rr.com>, Darren New  <dnew at san.rr.com> wrote:
>
>BCD is good for high precision small range. Float is good for lower
>precision wider range. Science is generally limited by the number of
>significant digits in your real measurements. You can't know how close
>that star is down to the inch. Hence, using binary for FP gives you more
>precision in the same number of bits.

One can have floating-point BCD, which is what I'm currently working on.
It's a real pleasure to write

    1.2e2346257231235019862340987162305961293865 * 2.0

and get

    2.40e2346257231235019862340987162305961293865

Note carefully the mantissa with its trailing zero.
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