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[3.13] gh-141004: Document Py_HUGE_VAL/IS_FINITE/IS_INFINITE/IS_NAN (GH-141544) by skirpichev · Pull Request #141700 · python/cpython · GitHub

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[3.13] gh-141004: Document Py_HUGE_VAL/IS_FINITE/IS_INFINITE/IS_NAN (GH-141544) #141700

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[3.13] gh-141004: Document Py_HUGE_VAL/IS_FINITE/IS_INFINITE/IS_NAN (GH-141544) #141700

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36 changes: 36 additions & 0 deletions Doc/c-api/float.rst
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Expand Up @@ -96,6 +96,14 @@ Floating-Point Objects
the C11 standard ``<math.h>`` header.


.. c:macro:: Py_HUGE_VAL

Equivalent to :c:macro:`!INFINITY`.

.. deprecated:: 3.14
The macro is :term:`soft deprecated`.


.. c:macro:: Py_MATH_E

The definition (accurate for a :c:expr:`double` type) of the :data:`math.e` constant.
Expand Down Expand Up @@ -140,6 +148,34 @@ Floating-Point Objects
return PyFloat_FromDouble(copysign(INFINITY, sign));


.. c:macro:: Py_IS_FINITE(X)

Return ``1`` if the given floating-point number *X* is finite,
that is, it is normal, subnormal or zero, but not infinite or NaN.
Return ``0`` otherwise.

.. deprecated:: 3.14
The macro is :term:`soft deprecated`. Use :c:macro:`!isfinite` instead.


.. c:macro:: Py_IS_INFINITY(X)

Return ``1`` if the given floating-point number *X* is positive or negative
infinity. Return ``0`` otherwise.

.. deprecated:: 3.14
The macro is :term:`soft deprecated`. Use :c:macro:`!isinf` instead.


.. c:macro:: Py_IS_NAN(X)

Return ``1`` if the given floating-point number *X* is a not-a-number (NaN)
value. Return ``0`` otherwise.

.. deprecated:: 3.14
The macro is :term:`soft deprecated`. Use :c:macro:`!isnan` instead.


Pack and Unpack functions
-------------------------

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