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Update decimal docs for the new floating point repr().

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Raymond Hettinger 2009-04-23 22:06:12 +00:00
parent 4a16e3a764
commit d258d1e7e8
1 changed files with 3 additions and 3 deletions
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Doc/library/decimal.rst
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@ -30,9 +30,9 @@ arithmetic. It offers several advantages over the :class:`float` datatype:
people learn at school." -- excerpt from the decimal arithmetic specification.
* Decimal numbers can be represented exactly. In contrast, numbers like
:const:`1.1` do not have an exact representation in binary floating point. End
users typically would not expect :const:`1.1` to display as
:const:`1.1000000000000001` as it does with binary floating point.
:const:`1.1` and :const:`2.2` do not have an exact representations in binary
floating point. End users typically would not expect ``1.1 + 2.2`` to display
as :const:`3.3000000000000003` as it does with binary floating point.
* The exactness carries over into arithmetic. In decimal floating point, ``0.1
+ 0.1 + 0.1 - 0.3`` is exactly equal to zero. In binary floating point, the result