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Merged
mdickinson merged 5 commits into from
Nov 27, 2022
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gh-85988: Change documentation for sys.float_info.rounds #99675

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a724de0
Change documentation for sys.float_info.rounds
tbwolfe Nov 22, 2022
49c9296
Merge branch 'main' into float-info-rounds-documentation
tbwolfe Nov 22, 2022
7031f9f
Correction to previous documentation change
tbwolfe Nov 22, 2022
51a2d35
Merge branch 'float-info-rounds-documentation' of github.com:tbwolfe/…
tbwolfe Nov 22, 2022
4243533
Clarify source for value of FLT_ROUNDS
tbwolfe Nov 22, 2022
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Change documentation for sys.float_info.rounds 
Change the documentation for sys.float_info.rounds to remove
references to C99 section 5.2.4.2.2 and instead place the
available values inline.
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@tbwolfe
tbwolfe committed Nov 22, 2022
commit a724de04c9f2110fb3c463cd45fd51df055248e7
17 changes: 11 additions & 6 deletions Doc/library/sys.rst
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Expand Up @@ -604,12 +604,17 @@ always available.
+---------------------+----------------+--------------------------------------------------+
| :const:`radix` | FLT_RADIX | radix of exponent representation |
+---------------------+----------------+--------------------------------------------------+
| :const:`rounds` | FLT_ROUNDS | integer constant representing the rounding mode |
| | | used for arithmetic operations. This reflects |
| | | the value of the system FLT_ROUNDS macro at |
| | | interpreter startup time. See section 5.2.4.2.2 |
| | | of the C99 standard for an explanation of the |
| | | possible values and their meanings. |
| :const:`rounds` | FLT_ROUNDS | The rounding mode for floating-point addition is |
| | | characterized by the implementation defined value|
| | | of FLT_ROUNDS: |
| | | -1 indeterminable |
| | | 0 toward zero |
| | | 1 to nearest |
| | | 2 toward positive infinity |
| | | 3 toward negative infinity |
| | | |
| | | All other values for FLT_ROUNDS characterize |
| | | implementation-defined rounding behavior. |
+---------------------+----------------+--------------------------------------------------+

The attribute :attr:`sys.float_info.dig` needs further explanation. If
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