mirror of https://github.com/python/cpython
Remove PyInt API from the docs. Extend PyLong docs to cover all public functions in longobject.c.
This commit is contained in:
parent
8d5c39240e
commit
9914dd33c0
|
@ -132,115 +132,6 @@ Numeric Objects
|
||||||
.. index:: object: numeric
|
.. index:: object: numeric
|
||||||
|
|
||||||
|
|
||||||
.. _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`.
|
|
||||||
|
|
||||||
|
|
||||||
.. cfunction:: int PyInt_CheckExact(PyObject *o)
|
|
||||||
|
|
||||||
Return true if *o* is of type :cdata:`PyInt_Type`, but not a subtype of
|
|
||||||
:cdata:`PyInt_Type`.
|
|
||||||
|
|
||||||
|
|
||||||
.. 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.
|
|
||||||
|
|
||||||
|
|
||||||
.. 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.
|
|
||||||
|
|
||||||
|
|
||||||
.. 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.
|
|
||||||
|
|
||||||
|
|
||||||
.. 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`.
|
|
||||||
|
|
||||||
|
|
||||||
.. 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).
|
|
||||||
|
|
||||||
|
|
||||||
.. _boolobjects:
|
.. _boolobjects:
|
||||||
|
|
||||||
Boolean Objects
|
Boolean Objects
|
||||||
|
@ -289,23 +180,23 @@ are available, however.
|
||||||
|
|
||||||
.. _longobjects:
|
.. _longobjects:
|
||||||
|
|
||||||
Long Integer Objects
|
Integer Objects
|
||||||
--------------------
|
---------------
|
||||||
|
|
||||||
.. index:: object: long integer
|
.. index:: object: long integer
|
||||||
|
object: integer
|
||||||
|
|
||||||
|
All integers are implemented as "long" integer objects of arbitrary size.
|
||||||
|
|
||||||
.. ctype:: PyLongObject
|
.. ctype:: PyLongObject
|
||||||
|
|
||||||
This subtype of :ctype:`PyObject` represents a Python long integer object.
|
This subtype of :ctype:`PyObject` represents a Python integer object.
|
||||||
|
|
||||||
|
|
||||||
.. cvar:: PyTypeObject PyLong_Type
|
.. cvar:: PyTypeObject PyLong_Type
|
||||||
|
|
||||||
.. index:: single: LongType (in modules types)
|
This instance of :ctype:`PyTypeObject` represents the Python integer type.
|
||||||
|
This is the same object as ``int``.
|
||||||
This instance of :ctype:`PyTypeObject` represents the Python long integer type.
|
|
||||||
This is the same object as ``long`` and ``types.LongType``.
|
|
||||||
|
|
||||||
|
|
||||||
.. cfunction:: int PyLong_Check(PyObject *p)
|
.. cfunction:: int PyLong_Check(PyObject *p)
|
||||||
|
@ -320,10 +211,20 @@ Long Integer Objects
|
||||||
:ctype:`PyLongObject`.
|
:ctype:`PyLongObject`.
|
||||||
|
|
||||||
|
|
||||||
|
.. XXX cfunction PyInt_CheckExact(PyObject *p) checks if argument is a long
|
||||||
|
object and fits into a C long
|
||||||
|
|
||||||
|
|
||||||
.. cfunction:: PyObject* PyLong_FromLong(long v)
|
.. cfunction:: PyObject* PyLong_FromLong(long v)
|
||||||
|
|
||||||
Return a new :ctype:`PyLongObject` object from *v*, or *NULL* on failure.
|
Return a new :ctype:`PyLongObject` object from *v*, or *NULL* on failure.
|
||||||
|
|
||||||
|
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* PyLong_FromUnsignedLong(unsigned long v)
|
.. cfunction:: PyObject* PyLong_FromUnsignedLong(unsigned long v)
|
||||||
|
|
||||||
|
@ -331,6 +232,18 @@ Long Integer Objects
|
||||||
*NULL* on failure.
|
*NULL* on failure.
|
||||||
|
|
||||||
|
|
||||||
|
.. cfunction:: PyObject* PyLong_FromSsize_t(Py_ssize_t v)
|
||||||
|
|
||||||
|
Return a new :ctype:`PyLongObject` object with a value of *v*, or *NULL*
|
||||||
|
on failure.
|
||||||
|
|
||||||
|
|
||||||
|
.. cfunction:: PyObject* PyLong_FromSize_t(size_t v)
|
||||||
|
|
||||||
|
Return a new :ctype:`PyLongObject` object with a value of *v*, or *NULL*
|
||||||
|
on failure.
|
||||||
|
|
||||||
|
|
||||||
.. cfunction:: PyObject* PyLong_FromLongLong(PY_LONG_LONG v)
|
.. cfunction:: PyObject* PyLong_FromLongLong(PY_LONG_LONG v)
|
||||||
|
|
||||||
Return a new :ctype:`PyLongObject` object from a C :ctype:`long long`, or *NULL*
|
Return a new :ctype:`PyLongObject` object from a C :ctype:`long long`, or *NULL*
|
||||||
|
@ -351,33 +264,32 @@ Long Integer Objects
|
||||||
|
|
||||||
.. cfunction:: PyObject* PyLong_FromString(char *str, char **pend, int base)
|
.. cfunction:: PyObject* PyLong_FromString(char *str, char **pend, int base)
|
||||||
|
|
||||||
Return a new :ctype:`PyLongObject` based on the string value in *str*, which is
|
Return a new :ctype:`PyLongObject` based on the string value in *str*, which
|
||||||
interpreted according to the radix in *base*. If *pend* is non-*NULL*,
|
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
|
``*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
|
representation of the number. If *base* is ``0``, the radix will be
|
||||||
based on the leading characters of *str*: if *str* starts with ``'0x'`` or
|
determined based on the leading characters of *str*: if *str* starts with
|
||||||
``'0X'``, radix 16 will be used; if *str* starts with ``'0'``, radix 8 will be
|
``'0x'`` or ``'0X'``, radix 16 will be used; if *str* starts with ``'0o'`` or
|
||||||
used; otherwise radix 10 will be used. If *base* is not ``0``, it must be
|
``'0O'``, radix 8 will be used; if *str* starts with ``'0b'`` or ``'0B'``,
|
||||||
between ``2`` and ``36``, inclusive. Leading spaces are ignored. If there are
|
radix 2 will be used; otherwise radix 10 will be used. If *base* is not
|
||||||
no digits, :exc:`ValueError` will be raised.
|
``0``, it must be between ``2`` and ``36``, inclusive. Leading spaces are
|
||||||
|
ignored. If there are no digits, :exc:`ValueError` will be raised.
|
||||||
|
|
||||||
|
|
||||||
.. cfunction:: PyObject* PyLong_FromUnicode(Py_UNICODE *u, Py_ssize_t length, int base)
|
.. cfunction:: PyObject* PyLong_FromUnicode(Py_UNICODE *u, Py_ssize_t length, int base)
|
||||||
|
|
||||||
Convert a sequence of Unicode digits to a Python long integer value. The first
|
Convert a sequence of Unicode digits to a Python integer value. The Unicode
|
||||||
parameter, *u*, points to the first character of the Unicode string, *length*
|
string is first encoded to a byte string using :cfunc:`PyUnicode_EncodeDecimal`
|
||||||
gives the number of characters, and *base* is the radix for the conversion. The
|
and then converted using :cfunc:`PyLong_FromString`.
|
||||||
radix must be in the range [2, 36]; if it is out of range, :exc:`ValueError`
|
|
||||||
will be raised.
|
|
||||||
|
|
||||||
|
|
||||||
.. cfunction:: PyObject* PyLong_FromVoidPtr(void *p)
|
.. cfunction:: PyObject* PyLong_FromVoidPtr(void *p)
|
||||||
|
|
||||||
Create a Python integer or long integer from the pointer *p*. The pointer value
|
Create a Python integer from the pointer *p*. The pointer value can be
|
||||||
can be retrieved from the resulting value using :cfunc:`PyLong_AsVoidPtr`.
|
retrieved from the resulting value using :cfunc:`PyLong_AsVoidPtr`.
|
||||||
If the integer is larger than LONG_MAX, a positive long integer is returned.
|
|
||||||
|
|
||||||
|
|
||||||
|
.. XXX alias PyLong_AS_LONG (for now)
|
||||||
.. cfunction:: long PyLong_AsLong(PyObject *pylong)
|
.. cfunction:: long PyLong_AsLong(PyObject *pylong)
|
||||||
|
|
||||||
.. index::
|
.. index::
|
||||||
|
@ -399,15 +311,32 @@ Long Integer Objects
|
||||||
raised.
|
raised.
|
||||||
|
|
||||||
|
|
||||||
|
.. cfunction:: Py_ssize_t PyLong_AsSsize_t(PyObject *pylong)
|
||||||
|
|
||||||
|
.. index::
|
||||||
|
single: PY_SSIZE_T_MAX
|
||||||
|
|
||||||
|
Return a :ctype:`Py_ssize_t` representation of the contents of *pylong*. If
|
||||||
|
*pylong* is greater than :const:`PY_SSIZE_T_MAX`, an :exc:`OverflowError` is
|
||||||
|
raised.
|
||||||
|
|
||||||
|
|
||||||
|
.. cfunction:: size_t PyLong_AsSize_t(PyObject *pylong)
|
||||||
|
|
||||||
|
Return a :ctype:`size_t` representation of the contents of *pylong*. If
|
||||||
|
*pylong* is greater than the maximum value for a :ctype:`size_t`, an
|
||||||
|
:exc:`OverflowError` is raised.
|
||||||
|
|
||||||
|
|
||||||
.. cfunction:: PY_LONG_LONG PyLong_AsLongLong(PyObject *pylong)
|
.. cfunction:: PY_LONG_LONG PyLong_AsLongLong(PyObject *pylong)
|
||||||
|
|
||||||
Return a C :ctype:`long long` from a Python long integer. If *pylong* cannot be
|
Return a C :ctype:`long long` from a Python integer. If *pylong* cannot be
|
||||||
represented as a :ctype:`long long`, an :exc:`OverflowError` will be raised.
|
represented as a :ctype:`long long`, an :exc:`OverflowError` will be raised.
|
||||||
|
|
||||||
|
|
||||||
.. cfunction:: unsigned PY_LONG_LONG PyLong_AsUnsignedLongLong(PyObject *pylong)
|
.. cfunction:: unsigned PY_LONG_LONG PyLong_AsUnsignedLongLong(PyObject *pylong)
|
||||||
|
|
||||||
Return a C :ctype:`unsigned long long` from a Python long integer. If *pylong*
|
Return a C :ctype:`unsigned long long` from a Python integer. If *pylong*
|
||||||
cannot be represented as an :ctype:`unsigned long long`, an :exc:`OverflowError`
|
cannot be represented as an :ctype:`unsigned long long`, an :exc:`OverflowError`
|
||||||
will be raised if the value is positive, or a :exc:`TypeError` will be raised if
|
will be raised if the value is positive, or a :exc:`TypeError` will be raised if
|
||||||
the value is negative.
|
the value is negative.
|
||||||
|
@ -415,13 +344,13 @@ Long Integer Objects
|
||||||
|
|
||||||
.. cfunction:: unsigned long PyLong_AsUnsignedLongMask(PyObject *io)
|
.. cfunction:: unsigned long PyLong_AsUnsignedLongMask(PyObject *io)
|
||||||
|
|
||||||
Return a C :ctype:`unsigned long` from a Python long integer, without checking
|
Return a C :ctype:`unsigned long` from a Python integer, without checking for
|
||||||
for overflow.
|
overflow.
|
||||||
|
|
||||||
|
|
||||||
.. cfunction:: unsigned PY_LONG_LONG PyLong_AsUnsignedLongLongMask(PyObject *io)
|
.. cfunction:: unsigned PY_LONG_LONG PyLong_AsUnsignedLongLongMask(PyObject *io)
|
||||||
|
|
||||||
Return a C :ctype:`unsigned long long` from a Python long integer, without
|
Return a C :ctype:`unsigned long long` from a Python integer, without
|
||||||
checking for overflow.
|
checking for overflow.
|
||||||
|
|
||||||
|
|
||||||
|
@ -434,12 +363,19 @@ Long Integer Objects
|
||||||
|
|
||||||
.. cfunction:: void* PyLong_AsVoidPtr(PyObject *pylong)
|
.. cfunction:: void* PyLong_AsVoidPtr(PyObject *pylong)
|
||||||
|
|
||||||
Convert a Python integer or long integer *pylong* to a C :ctype:`void` pointer.
|
Convert a Python integer *pylong* to a C :ctype:`void` pointer. If *pylong*
|
||||||
If *pylong* cannot be converted, an :exc:`OverflowError` will be raised. This
|
cannot be converted, an :exc:`OverflowError` will be raised. This is only
|
||||||
is only assured to produce a usable :ctype:`void` pointer for values created
|
assured to produce a usable :ctype:`void` pointer for values created with
|
||||||
with :cfunc:`PyLong_FromVoidPtr`.
|
:cfunc:`PyLong_FromVoidPtr`.
|
||||||
|
|
||||||
For values outside 0..LONG_MAX, both signed and unsigned integers are acccepted.
|
|
||||||
|
.. XXX name?
|
||||||
|
.. 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).
|
||||||
|
|
||||||
|
|
||||||
.. _floatobjects:
|
.. _floatobjects:
|
||||||
|
@ -2435,7 +2371,7 @@ change in future releases of Python.
|
||||||
.. cfunction:: int PyObject_AsFileDescriptor(PyObject *p)
|
.. cfunction:: int PyObject_AsFileDescriptor(PyObject *p)
|
||||||
|
|
||||||
Return the file descriptor associated with *p* as an :ctype:`int`. If the
|
Return the file descriptor associated with *p* as an :ctype:`int`. If the
|
||||||
object is an integer or long integer, its value is returned. If not, the
|
object is an integer, its value is returned. If not, the
|
||||||
object's :meth:`fileno` method is called if it exists; the method must return
|
object's :meth:`fileno` method is called if it exists; the method must return
|
||||||
an integer, which is returned as the file descriptor value. Sets an
|
an integer, which is returned as the file descriptor value. Sets an
|
||||||
exception and returns ``-1`` on failure.
|
exception and returns ``-1`` on failure.
|
||||||
|
|
|
@ -165,7 +165,7 @@ error on to the interpreter but wants to handle it completely by itself
|
||||||
Every failing :cfunc:`malloc` call must be turned into an exception --- the
|
Every failing :cfunc:`malloc` call must be turned into an exception --- the
|
||||||
direct caller of :cfunc:`malloc` (or :cfunc:`realloc`) must call
|
direct caller of :cfunc:`malloc` (or :cfunc:`realloc`) must call
|
||||||
:cfunc:`PyErr_NoMemory` and return a failure indicator itself. All the
|
:cfunc:`PyErr_NoMemory` and return a failure indicator itself. All the
|
||||||
object-creating functions (for example, :cfunc:`PyInt_FromLong`) already do
|
object-creating functions (for example, :cfunc:`PyLong_FromLong`) already do
|
||||||
this, so this note is only relevant to those who call :cfunc:`malloc` directly.
|
this, so this note is only relevant to those who call :cfunc:`malloc` directly.
|
||||||
|
|
||||||
Also note that, with the important exception of :cfunc:`PyArg_ParseTuple` and
|
Also note that, with the important exception of :cfunc:`PyArg_ParseTuple` and
|
||||||
|
@ -889,10 +889,10 @@ reference or not.
|
||||||
|
|
||||||
Most functions that return a reference to an object pass on ownership with the
|
Most functions that return a reference to an object pass on ownership with the
|
||||||
reference. In particular, all functions whose function it is to create a new
|
reference. In particular, all functions whose function it is to create a new
|
||||||
object, such as :cfunc:`PyInt_FromLong` and :cfunc:`Py_BuildValue`, pass
|
object, such as :cfunc:`PyLong_FromLong` and :cfunc:`Py_BuildValue`, pass
|
||||||
ownership to the receiver. Even if the object is not actually new, you still
|
ownership to the receiver. Even if the object is not actually new, you still
|
||||||
receive ownership of a new reference to that object. For instance,
|
receive ownership of a new reference to that object. For instance,
|
||||||
:cfunc:`PyInt_FromLong` maintains a cache of popular values and can return a
|
:cfunc:`PyLong_FromLong` maintains a cache of popular values and can return a
|
||||||
reference to a cached item.
|
reference to a cached item.
|
||||||
|
|
||||||
Many functions that extract objects from other objects also transfer ownership
|
Many functions that extract objects from other objects also transfer ownership
|
||||||
|
@ -942,7 +942,7 @@ an unrelated object while borrowing a reference to a list item. For instance::
|
||||||
{
|
{
|
||||||
PyObject *item = PyList_GetItem(list, 0);
|
PyObject *item = PyList_GetItem(list, 0);
|
||||||
|
|
||||||
PyList_SetItem(list, 1, PyInt_FromLong(0L));
|
PyList_SetItem(list, 1, PyLong_FromLong(0L));
|
||||||
PyObject_Print(item, stdout, 0); /* BUG! */
|
PyObject_Print(item, stdout, 0); /* BUG! */
|
||||||
}
|
}
|
||||||
|
|
||||||
|
@ -974,7 +974,7 @@ increment the reference count. The correct version of the function reads::
|
||||||
PyObject *item = PyList_GetItem(list, 0);
|
PyObject *item = PyList_GetItem(list, 0);
|
||||||
|
|
||||||
Py_INCREF(item);
|
Py_INCREF(item);
|
||||||
PyList_SetItem(list, 1, PyInt_FromLong(0L));
|
PyList_SetItem(list, 1, PyLong_FromLong(0L));
|
||||||
PyObject_Print(item, stdout, 0);
|
PyObject_Print(item, stdout, 0);
|
||||||
Py_DECREF(item);
|
Py_DECREF(item);
|
||||||
}
|
}
|
||||||
|
|
Loading…
Reference in New Issue