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| -rw-r--r-- | Doc/c-api/long.rst | 29 |
1 files changed, 16 insertions, 13 deletions
diff --git a/Doc/c-api/long.rst b/Doc/c-api/long.rst index b2295e0..526a87d 100644 --- a/Doc/c-api/long.rst +++ b/Doc/c-api/long.rst @@ -108,26 +108,29 @@ All integers are implemented as "long" integer objects of arbitrary size. .. XXX alias PyLong_AS_LONG (for now) -.. c:function:: long PyLong_AsLong(PyObject *pylong) +.. c:function:: long PyLong_AsLong(PyObject *obj) .. index:: single: LONG_MAX single: OverflowError (built-in exception) - Return a C :c:type:`long` representation of the contents of *pylong*. If - *pylong* is greater than :const:`LONG_MAX`, raise an :exc:`OverflowError`, - and return -1. Convert non-long objects automatically to long first, - and return -1 if that raises exceptions. + Return a C :c:type:`long` representation of *obj*. If *obj* is not an + instance of :c:type:`PyLongObject`, first call its :meth:`__int__` method + (if present) to convert it to a :c:type:`PyLongObject`. -.. c:function:: long PyLong_AsLongAndOverflow(PyObject *pylong, int *overflow) + Raise :exc:`OverflowError` if the value of *obj* is out of range for a + :c:type:`long`. - Return a C :c:type:`long` representation of the contents of - *pylong*. If *pylong* is greater than :const:`LONG_MAX` or less - than :const:`LONG_MIN`, set *\*overflow* to ``1`` or ``-1``, - respectively, and return ``-1``; otherwise, set *\*overflow* to - ``0``. If any other exception occurs (for example a TypeError or - MemoryError), then ``-1`` will be returned and *\*overflow* will - be ``0``. +.. c:function:: long PyLong_AsLongAndOverflow(PyObject *obj, int *overflow) + + Return a C :c:type:`long` representation of *obj*. If *obj* is not an + instance of :c:type:`PyLongObject`, first call its :meth:`__int__` method + (if present) to convert it to a :c:type:`PyLongObject`. + + If the value of *obj* is greater than :const:`LONG_MAX` or less than + :const:`LONG_MIN`, set *\*overflow* to ``1`` or ``-1``, respectively, and + return ``-1``; otherwise, set *\*overflow* to ``0``. If any other exception + occurs set *\*overflow* to ``0`` and return ``-1`` as usual. .. c:function:: PY_LONG_LONG PyLong_AsLongLongAndOverflow(PyObject *pylong, int *overflow) |