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[3.12] gh-102823: Document return type of floor division on floats (GH-102824) #109092

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Sep 8, 2023
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[3.12] gh-102823: Document return type of floor division on floats (GH-102824) #109092

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8 changes: 5 additions & 3 deletions Doc/library/stdtypes.rst
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Expand Up @@ -282,7 +282,7 @@ the operations, see :ref:`operator-summary`):
+---------------------+---------------------------------+---------+--------------------+
| ``x / y`` | quotient of *x* and *y* | | |
+---------------------+---------------------------------+---------+--------------------+
| ``x // y`` | floored quotient of *x* and | \(1) | |
| ``x // y`` | floored quotient of *x* and | \(1)\(2)| |
| | *y* | | |
+---------------------+---------------------------------+---------+--------------------+
| ``x % y`` | remainder of ``x / y`` | \(2) | |
Expand Down Expand Up @@ -319,8 +319,10 @@ the operations, see :ref:`operator-summary`):
Notes:

(1)
Also referred to as integer division. The resultant value is a whole
integer, though the result's type is not necessarily int. The result is
Also referred to as integer division. For operands of type :class:`int`,
the result has type :class:`int`. For operands of type :class:`float`,
the result has type :class:`float`. In general, the result is a whole
integer, though the result's type is not necessarily :class:`int`. The result is
always rounded towards minus infinity: ``1//2`` is ``0``, ``(-1)//2`` is
``-1``, ``1//(-2)`` is ``-1``, and ``(-1)//(-2)`` is ``0``.

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2 changes: 2 additions & 0 deletions Misc/NEWS.d/next/Documentation/2023-03-19-09-39-31.gh-issue-102823.OzsOz0.rst
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@@ -0,0 +1,2 @@
Document the return type of ``x // y`` when ``x`` and ``y`` have type
:class:`float`.