diff -r ffa851df0825 -r 2fb8b9db1c86 symbian-qemu-0.9.1-12/python-2.6.1/Doc/c-api/int.rst --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/symbian-qemu-0.9.1-12/python-2.6.1/Doc/c-api/int.rst Fri Jul 31 15:01:17 2009 +0100 @@ -0,0 +1,130 @@ +.. highlightlang:: c + +.. _intobjects: + +Plain Integer Objects +--------------------- + +.. index:: object: integer + + +.. ctype:: PyIntObject + + This subtype of :ctype:`PyObject` represents a Python integer object. + + +.. cvar:: PyTypeObject PyInt_Type + + .. index:: single: IntType (in modules types) + + This instance of :ctype:`PyTypeObject` represents the Python plain integer type. + This is the same object as ``int`` and ``types.IntType``. + + +.. cfunction:: int PyInt_Check(PyObject *o) + + Return true if *o* is of type :cdata:`PyInt_Type` or a subtype of + :cdata:`PyInt_Type`. + + .. versionchanged:: 2.2 + Allowed subtypes to be accepted. + + +.. cfunction:: int PyInt_CheckExact(PyObject *o) + + Return true if *o* is of type :cdata:`PyInt_Type`, but not a subtype of + :cdata:`PyInt_Type`. + + .. versionadded:: 2.2 + + +.. cfunction:: PyObject* PyInt_FromString(char *str, char **pend, int base) + + Return a new :ctype:`PyIntObject` or :ctype:`PyLongObject` based on the string + value in *str*, which is interpreted according to the radix in *base*. If + *pend* is non-*NULL*, ``*pend`` will point to the first character in *str* which + follows the representation of the number. If *base* is ``0``, the radix will be + determined based on the leading characters of *str*: if *str* starts with + ``'0x'`` or ``'0X'``, radix 16 will be used; if *str* starts with ``'0'``, radix + 8 will be used; otherwise radix 10 will be used. If *base* is not ``0``, it + must be between ``2`` and ``36``, inclusive. Leading spaces are ignored. If + there are no digits, :exc:`ValueError` will be raised. If the string represents + a number too large to be contained within the machine's :ctype:`long int` type + and overflow warnings are being suppressed, a :ctype:`PyLongObject` will be + returned. If overflow warnings are not being suppressed, *NULL* will be + returned in this case. + + +.. cfunction:: PyObject* PyInt_FromLong(long ival) + + Create a new integer object with a value of *ival*. + + The current implementation keeps an array of integer objects for all integers + between ``-5`` and ``256``, when you create an int in that range you actually + just get back a reference to the existing object. So it should be possible to + change the value of ``1``. I suspect the behaviour of Python in this case is + undefined. :-) + + +.. cfunction:: PyObject* PyInt_FromSsize_t(Py_ssize_t ival) + + Create a new integer object with a value of *ival*. If the value exceeds + ``LONG_MAX``, a long integer object is returned. + + .. versionadded:: 2.5 + + +.. cfunction:: long PyInt_AsLong(PyObject *io) + + Will first attempt to cast the object to a :ctype:`PyIntObject`, if it is not + already one, and then return its value. If there is an error, ``-1`` is + returned, and the caller should check ``PyErr_Occurred()`` to find out whether + there was an error, or whether the value just happened to be -1. + + +.. cfunction:: long PyInt_AS_LONG(PyObject *io) + + Return the value of the object *io*. No error checking is performed. + + +.. cfunction:: unsigned long PyInt_AsUnsignedLongMask(PyObject *io) + + Will first attempt to cast the object to a :ctype:`PyIntObject` or + :ctype:`PyLongObject`, if it is not already one, and then return its value as + unsigned long. This function does not check for overflow. + + .. versionadded:: 2.3 + + +.. cfunction:: unsigned PY_LONG_LONG PyInt_AsUnsignedLongLongMask(PyObject *io) + + Will first attempt to cast the object to a :ctype:`PyIntObject` or + :ctype:`PyLongObject`, if it is not already one, and then return its value as + unsigned long long, without checking for overflow. + + .. versionadded:: 2.3 + + +.. cfunction:: Py_ssize_t PyInt_AsSsize_t(PyObject *io) + + Will first attempt to cast the object to a :ctype:`PyIntObject` or + :ctype:`PyLongObject`, if it is not already one, and then return its value as + :ctype:`Py_ssize_t`. + + .. versionadded:: 2.5 + + +.. cfunction:: long PyInt_GetMax() + + .. index:: single: LONG_MAX + + Return the system's idea of the largest integer it can handle + (:const:`LONG_MAX`, as defined in the system header files). + + +.. cfunction:: int PyInt_ClearFreeList(void) + + Clear the integer free list. Return the number of items that could not + be freed. + + .. versionadded:: 2.6