Why is 2.3 = 2.2999999999999998 ?

Jp Calderone exarkun at intarweb.us
Fri Jan 24 00:56:26 CET 2003


On Fri, Jan 24, 2003 at 12:11:47AM +0100, Arne Koewing wrote:
> my puthon installation seems to ce confused about floats...

  Certain numbers are not exactly representable in base two (short of using
an infinite amount of memory).  Compare this to the decimal representation
of one third.   0.333...   This is a common problem, associated with
floating points in pretty much every programming language (for binary
computers).

  Jp

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