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Merged revisions 74074,74077,74111,74188,74192-74193,74200,74252-74253,74258-74261 via svnmerge from

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  r74074 | georg.brandl | 2009-07-18 05:03:10 -0400 (Sat, 18 Jul 2009) | 1 line

  #6513: fix example code: warning categories are classes, not instances.
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  r74077 | georg.brandl | 2009-07-18 05:43:40 -0400 (Sat, 18 Jul 2009) | 1 line

  #6489: fix an ambiguity in getiterator() documentation.
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  r74111 | benjamin.peterson | 2009-07-20 09:30:10 -0400 (Mon, 20 Jul 2009) | 1 line

  remove docs for deprecated -p option
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  r74188 | benjamin.peterson | 2009-07-23 10:25:31 -0400 (Thu, 23 Jul 2009) | 1 line

  use bools
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  r74192 | georg.brandl | 2009-07-24 12:28:38 -0400 (Fri, 24 Jul 2009) | 1 line

  Fix arg types of et#.
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  r74193 | georg.brandl | 2009-07-24 12:46:38 -0400 (Fri, 24 Jul 2009) | 1 line

  Dont put "void" in signature for nullary functions.
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  r74200 | georg.brandl | 2009-07-25 09:02:15 -0400 (Sat, 25 Jul 2009) | 1 line

  #6571: add index entries for more operators.
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  r74252 | georg.brandl | 2009-07-29 12:06:31 -0400 (Wed, 29 Jul 2009) | 1 line

  #6593: fix link targets.
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  r74253 | georg.brandl | 2009-07-29 12:09:17 -0400 (Wed, 29 Jul 2009) | 1 line

  #6591: add reference to ioctl in fcntl module for platforms other than Windows.
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  r74258 | georg.brandl | 2009-07-29 12:57:05 -0400 (Wed, 29 Jul 2009) | 1 line

  Add a link to readline, and mention IPython and bpython.
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  r74259 | georg.brandl | 2009-07-29 13:07:21 -0400 (Wed, 29 Jul 2009) | 1 line

  Fix some markup and small factual glitches found by M. Markert.
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  r74260 | georg.brandl | 2009-07-29 13:15:20 -0400 (Wed, 29 Jul 2009) | 1 line

  Fix a few markup glitches.
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  r74261 | georg.brandl | 2009-07-29 13:50:25 -0400 (Wed, 29 Jul 2009) | 1 line

  Rewrite the section about classes a bit; mostly tidbits, and a larger update to the section about "private" variables to reflect the Pythonic consensus better.
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This commit is contained in:
Alexandre Vassalotti 2009-07-29 19:54:39 +00:00
parent fc230e8cfa
commit 6d3dfc3ff2
19 changed files with 167 additions and 149 deletions
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15
Doc/tutorial/stdlib2.rst
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@ -347,12 +347,15 @@ Decimal Floating Point Arithmetic
The :mod:`decimal` module offers a :class:`Decimal` datatype for decimal
floating point arithmetic. Compared to the built-in :class:`float`
implementation of binary floating point, the new class is especially helpful for
financial applications and other uses which require exact decimal
representation, control over precision, control over rounding to meet legal or
regulatory requirements, tracking of significant decimal places, or for
applications where the user expects the results to match calculations done by
hand.
implementation of binary floating point, the class is especially helpful for
* financial applications and other uses which require exact decimal
representation,
* control over precision,
* control over rounding to meet legal or regulatory requirements,
* tracking of significant decimal places, or
* applications where the user expects the results to match calculations done by
hand.
For example, calculating a 5% tax on a 70 cent phone charge gives different
results in decimal floating point and binary floating point. The difference