bpo-46906: Mention native endian in PyFloat_Pack8() doc (GH-31866)

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Victor Stinner 2022-03-14 16:51:51 +01:00 committed by GitHub
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1 changed files with 6 additions and 2 deletions

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@ -109,7 +109,9 @@ Pack functions
The pack routines write 2, 4 or 8 bytes, starting at *p*. *le* is an
:c:type:`int` argument, non-zero if you want the bytes string in little-endian
format (exponent last, at ``p+1``, ``p+3``, or ``p+6`` ``p+7``), zero if you
want big-endian format (exponent first, at *p*).
want big-endian format (exponent first, at *p*). The :c:data:`PY_BIG_ENDIAN`
constant can be used to use the native endian: it is equal to ``1`` on big
endian processor, or ``0`` on little endian processor.
Return value: ``0`` if all is OK, ``-1`` if error (and an exception is set,
most likely :exc:`OverflowError`).
@ -138,7 +140,9 @@ Unpack functions
The unpack routines read 2, 4 or 8 bytes, starting at *p*. *le* is an
:c:type:`int` argument, non-zero if the bytes string is in little-endian format
(exponent last, at ``p+1``, ``p+3`` or ``p+6`` and ``p+7``), zero if big-endian
(exponent first, at *p*).
(exponent first, at *p*). The :c:data:`PY_BIG_ENDIAN` constant can be used to
use the native endian: it is equal to ``1`` on big endian processor, or ``0``
on little endian processor.
Return value: The unpacked double. On error, this is ``-1.0`` and
:c:func:`PyErr_Occurred` is true (and an exception is set, most likely