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gh-111545: Add Py_HashDouble() function #113115

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gh-111545: Add Py_HashDouble() function
vstinner Nov 14, 2023
67b4eb8
Fix Sphinx syntax
vstinner Dec 15, 2023
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Fix Sphinx syntax
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@vstinner
vstinner committed Dec 15, 2023
commit 67b4eb8c745c0fda6121d65a9470503663596576
24 changes: 13 additions & 11 deletions Doc/whatsnew/3.13.rst
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Expand Up @@ -1282,17 +1282,19 @@ New Features
(Contributed by Victor Stinner in :gh:`111545`.)

* Add :c:func:`Py_HashDouble` function to hash a C double number. Existing code
using the private ``_Py_HashDouble()`` function can be updated to::

Py_hash_t hash_double(PyObject *obj, double value)
{
if (!Py_IS_NAN(value)) {
return Py_HashDouble(value);
}
else {
return Py_HashPointer(obj);
}
}
using the private ``_Py_HashDouble()`` function can be updated to:

.. code-block:: c

Py_hash_t hash_double(PyObject *obj, double value)
{
if (!Py_IS_NAN(value)) {
return Py_HashDouble(value);
}
else {
return Py_HashPointer(obj);
}
}

(Contributed by Victor Stinner in :gh:`111545`.)

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