Commit Graph

497 Commits

Author SHA1 Message Date
Victor Stinner c310185c08
bpo-42161: Remove private _PyLong_Zero and _PyLong_One (GH-23003)
Use PyLong_FromLong(0) and PyLong_FromLong(1) of the public C API
instead. For Python internals, _PyLong_GetZero() and _PyLong_GetOne()
of pycore_long.h can be used.
2020-10-27 21:34:33 +01:00
Victor Stinner 8e3b9f9283
bpo-42161: Add _PyLong_GetZero() and _PyLong_GetOne() (GH-22993)
Add _PyLong_GetZero() and _PyLong_GetOne() functions and a new
internal pycore_long.h header file.

Python cannot be built without small integer singletons anymore.
2020-10-27 00:00:03 +01:00
Raymond Hettinger 4e0ce82058
Revert "bpo-26680: Incorporate is_integer in all built-in and standard library numeric types (GH-6121)" (GH-22584)
This reverts commit 58a7da9e12.
2020-10-07 16:43:44 -07:00
Robert Smallshire 58a7da9e12
bpo-26680: Incorporate is_integer in all built-in and standard library numeric types (GH-6121)
* bpo-26680: Adds support for int.is_integer() for compatibility with float.is_integer().

The int.is_integer() method always returns True.

* bpo-26680: Adds a test to ensure that False.is_integer() and True.is_integer() are always True.

* bpo-26680: Adds Real.is_integer() with a trivial implementation using conversion to int.

This default implementation is intended to reduce the workload for subclass
implementers. It is not robust in the presence of infinities or NaNs and
may have suboptimal performance for other types.

* bpo-26680: Adds Rational.is_integer which returns True if the denominator is one.

This implementation assumes the Rational is represented in it's
lowest form, as required by the class docstring.

* bpo-26680: Adds Integral.is_integer which always returns True.

* bpo-26680: Adds tests for Fraction.is_integer called as an instance method.

The tests for the Rational abstract base class use an unbound
method to sidestep the inability to directly instantiate Rational.
These tests check that everything works correct as an instance method.

* bpo-26680: Updates documentation for Real.is_integer and built-ins int and float.

The call x.is_integer() is now listed in the table of operations
which apply to all numeric types except complex, with a reference
to the full documentation for Real.is_integer().  Mention of
is_integer() has been removed from the section 'Additional Methods
on Float'.

The documentation for Real.is_integer() describes its purpose, and
mentions that it should be overridden for performance reasons, or
to handle special values like NaN.

* bpo-26680: Adds Decimal.is_integer to the Python and C implementations.

The C implementation of Decimal already implements and uses
mpd_isinteger internally, we just expose the existing function to
Python.

The Python implementation uses internal conversion to integer
using to_integral_value().

In both cases, the corresponding context methods are also
implemented.

Tests and documentation are included.

* bpo-26680: Updates the ACKS file.

* bpo-26680: NEWS entries for int, the numeric ABCs and Decimal.

Co-authored-by: Robert Smallshire <rob@sixty-north.com>
2020-10-01 17:30:08 +01:00
Serhiy Storchaka 5a2bac7fe0
bpo-41342: Convert int.__round__ to Argument Clinic (GH-21549) 2020-07-20 15:57:37 +03:00
Inada Naoki e4f1fe6edb
bpo-41123: Remove PyLong_FromUnicode() (GH-21204) 2020-06-29 13:00:43 +09:00
Victor Stinner 04fc4f2a46
bpo-40989: PyObject_INIT() becomes an alias to PyObject_Init() (GH-20901)
The PyObject_INIT() and PyObject_INIT_VAR() macros become aliases to,
respectively, PyObject_Init() and PyObject_InitVar() functions.

Rename _PyObject_INIT() and _PyObject_INIT_VAR() static inline
functions to, respectively, _PyObject_Init() and _PyObject_InitVar(),
and move them to pycore_object.h. Remove their return value:
their return type becomes void.

The _datetime module is now built with the Py_BUILD_CORE_MODULE macro
defined.

Remove an outdated comment on _Py_tracemalloc_config.
2020-06-16 01:28:07 +02:00
Niklas Fiekas 794e7d1ab2
bpo-29782: Consolidate _Py_Bit_Length() (GH-20739)
In GH-2866, _Py_Bit_Length() was added to pymath.h for lack of a better
location. GH-20518 added a more appropriate header file for bit utilities. It
also shows how to properly use intrinsics. This allows reconsidering bpo-29782.

* Move the function to the new header.
* Changed return type to match __builtin_clzl() and reviewed usage.
* Use intrinsics where available.
* Pick a fallback implementation suitable for inlining.
2020-06-15 14:33:48 +02:00
Victor Stinner 1bcc32f062
bpo-39465: Use _PyInterpreterState_GET() (GH-20788)
Replace _PyThreadState_GET() with _PyInterpreterState_GET() in:

* get_small_int()
* gcmodule.c: add also get_gc_state() function
* _PyTrash_deposit_object()
* _PyTrash_destroy_chain()
* warnings_get_state()
* Py_GetRecursionLimit()

Cleanup listnode.c: add 'parser' variable.
2020-06-10 20:08:26 +02:00
Victor Stinner c6b292cdee
bpo-29882: Add _Py_popcount32() function (GH-20518)
* Rename pycore_byteswap.h to pycore_bitutils.h.
* Move popcount_digit() to pycore_bitutils.h as _Py_popcount32().
* _Py_popcount32() uses GCC and clang builtin function if available.
* Add unit tests to _Py_popcount32().
2020-06-08 16:30:33 +02:00
Niklas Fiekas 8bd216dfed
bpo-29882: Add an efficient popcount method for integers (#771)
* bpo-29882: Add an efficient popcount method for integers

* Update 'sign bit' and versionadded in docs

* Add entry to whatsnew document

* Doc: use positive example, mention population count

* Minor cleanups of the core code

* Move popcount_digit closer to where it's used

* Use z instead of self after conversion

* Add 'absolute value' and 'population count' to docstring

* Fix clinic error about missing summary line

* Ensure popcount_digit is portable with 64-bit ints

Co-authored-by: Mark Dickinson <dickinsm@gmail.com>
2020-05-29 17:28:02 +01:00
Serhiy Storchaka 5f4b229df7
bpo-40792: Make the result of PyNumber_Index() always having exact type int. (GH-20443)
Previously, the result could have been an instance of a subclass of int.

Also revert bpo-26202 and make attributes start, stop and step of the range
object having exact type int.

Add private function _PyNumber_Index() which preserves the old behavior
of PyNumber_Index() for performance to use it in the conversion functions
like PyLong_AsLong().
2020-05-28 10:33:45 +03:00
Mark Dickinson 20941de0dd
bpo-37999: Fix outdated __int__ and nb_int references in comments (GH-20449)
* Fix outdated __int__ and nb_int references in comments

* Also update C-API documentation

* Add back missing 'method' word

* Remove .. deprecated notices
2020-05-27 13:43:17 +01:00
Serhiy Storchaka 578c3955e0
bpo-37999: No longer use __int__ in implicit integer conversions. (GH-15636)
Only __index__ should be used to make integer conversions lossless.
2020-05-26 18:43:38 +03:00
Sergey Fedoseev 86a93fddf7
bpo-37986: Improve perfomance of PyLong_FromDouble() (GH-15611)
* bpo-37986: Improve perfomance of PyLong_FromDouble()

* Use strict bound check for safety and symmetry

* Remove possibly outdated performance claims

Co-authored-by: Mark Dickinson <dickinsm@gmail.com>
2020-05-10 10:15:57 +01:00
Dong-hee Na b88cd585d3
bpo-40455: Remove gcc10 warning about x_digits (#19852)
* bpo-40455: Remove gcc10 warning about x_digits

* bpo-40455: nit

* bpo-40455: fix logic error
2020-05-04 22:32:42 +09:00
Victor Stinner 4a3fe08353
bpo-40268: Include explicitly pycore_interp.h (GH-19505)
pycore_pystate.h no longer includes pycore_interp.h:
it's now included explicitly in files accessing PyInterpreterState.
2020-04-14 14:26:24 +02:00
Serhiy Storchaka 8f87eefe7f
bpo-39943: Add the const qualifier to pointers on non-mutable PyBytes data. (GH-19472) 2020-04-12 14:58:27 +03:00
Petr Viktorin ffd9753a94
bpo-39245: Switch to public API for Vectorcall (GH-18460)
The bulk of this patch was generated automatically with:

    for name in \
        PyObject_Vectorcall \
        Py_TPFLAGS_HAVE_VECTORCALL \
        PyObject_VectorcallMethod \
        PyVectorcall_Function \
        PyObject_CallOneArg \
        PyObject_CallMethodNoArgs \
        PyObject_CallMethodOneArg \
    ;
    do
        echo $name
        git grep -lwz _$name | xargs -0 sed -i "s/\b_$name\b/$name/g"
    done

    old=_PyObject_FastCallDict
    new=PyObject_VectorcallDict
    git grep -lwz $old | xargs -0 sed -i "s/\b$old\b/$new/g"

and then cleaned up:

- Revert changes to in docs & news
- Revert changes to backcompat defines in headers
- Nudge misaligned comments
2020-02-11 17:46:57 +01:00
Victor Stinner 60ac6ed557
bpo-39573: Use Py_SET_SIZE() function (GH-18402)
Replace direct acccess to PyVarObject.ob_size with usage of
the Py_SET_SIZE() function.
2020-02-07 23:18:08 +01:00
Victor Stinner 58ac700fb0
bpo-39573: Use Py_TYPE() macro in Objects directory (GH-18392)
Replace direct access to PyObject.ob_type with Py_TYPE().
2020-02-07 03:04:21 +01:00
Victor Stinner c6e5c1123b
bpo-39489: Remove COUNT_ALLOCS special build (GH-18259)
Remove:

* COUNT_ALLOCS macro
* sys.getcounts() function
* SHOW_ALLOC_COUNT code in listobject.c
* SHOW_TRACK_COUNT code in tupleobject.c
* PyConfig.show_alloc_count field
* -X showalloccount command line option
* @test.support.requires_type_collecting decorator
2020-02-03 15:17:15 +01:00
Dong-hee Na 0d5eac8c32 closes bpo-39415: Remove unused codes from longobject.c complexobject.c floatobject.c. (GH-18105) 2020-01-21 18:49:30 -08:00
Niklas Fiekas c5b79003f5 bpo-31031: Unify duplicate bits_in_digit and bit_length (GH-2866)
Add _Py_bit_length() to unify duplicate bits_in_digit() and bit_length().
2020-01-16 15:09:19 +01:00
Victor Stinner 630c8df5cf
bpo-38858: Small integer per interpreter (GH-17315)
Each Python subinterpreter now has its own "small integer
singletons": numbers in [-5; 257] range.

It is no longer possible to change the number of small integers at
build time by overriding NSMALLNEGINTS and NSMALLPOSINTS macros:
macros should now be modified manually in pycore_pystate.h header
file.

For now, continue to share _PyLong_Zero and _PyLong_One singletons
between all subinterpreters.
2019-12-17 13:02:18 +01:00
Sergey Fedoseev 1f9f69dd4c bpo-27961: Replace PY_LLONG_MAX, PY_LLONG_MIN and PY_ULLONG_MAX with standard macros (GH-15385)
Use standard constants LLONG_MIN, LLONG_MAX and ULLONG_MAX.
2019-12-05 15:55:28 +01:00
HongWeipeng 036fe85bd3 bpo-27145: small_ints[x] could be returned in long_add and long_sub (GH-15716) 2019-11-26 16:54:49 +09:00
Victor Stinner 5dcc06f6e0
bpo-38858: Allocate small integers on the heap (GH-17301)
Allocate small Python integers (small_ints of longobject.c) on the
heap, rather than using static objects.
2019-11-21 08:51:59 +01:00
Victor Stinner 6314abcc08
bpo-37802: Fix a compiler warning in longobject.c (GH-16517)
bpo-37802, bpo-38321: Fix the following warnings:

    longobject.c(420): warning C4244: 'function': conversion from
    'unsigned __int64' to 'sdigit', possible loss of data

    longobject.c(428): warning C4267: 'function': conversion from
    'size_t' to 'sdigit', possible loss of data
2019-10-01 13:29:53 +02:00
HongWeipeng 42acb7b8d2 bpo-35696: Simplify long_compare() (GH-16146) 2019-09-19 00:10:15 +09:00
Sergey Fedoseev c6734ee7c5 bpo-37802: Slightly improve perfomance of PyLong_FromUnsigned*() (GH-15192) 2019-09-12 15:41:14 +01:00
Raymond Hettinger 7117074410 bpo-38096: Clean up the "struct sequence" / "named tuple" docs (GH-15895)
* bpo-38096: Clean up the "struct sequence" / "named tuple" docs

* Fix remaining occurrences of "struct sequence"

* Repair a user visible docstring
2019-09-11 15:17:32 +01:00
Jordon Xu 2ec7010206 bpo-37752: Delete redundant Py_CHARMASK in normalizestring() (GH-15095) 2019-09-10 17:04:08 +01:00
animalize 6b519985d2 replace inline function `is_small_int` with a macro version (GH-15710) 2019-09-05 23:00:56 -07:00
Victor Stinner bed4817d52
Make PyXXX_Fini() functions private (GH-15531)
For example, rename PyTuple_Fini() to _PyTuple_Fini().

These functions are only declared in the internal C API.
2019-08-27 00:12:32 +02:00
Greg Price 5e63ab05f1 bpo-37812: Convert CHECK_SMALL_INT macro to a function so the return is explicit. (GH-15216) 2019-08-24 10:19:37 -07:00
Jeroen Demeyer 196a530e00 bpo-37483: add _PyObject_CallOneArg() function (#14558) 2019-07-04 19:31:34 +09:00
Zackery Spytz dc2476500d bpo-37170: Fix the cast on error in PyLong_AsUnsignedLongLongMask() (GH-13860) 2019-06-06 22:39:23 +02:00
Petr Viktorin 1e375c6269
bpo-36027: Really fix "incompatible pointer type" compiler warning (GH-13761)
Apologies for the earlier hasty attempt.
2019-06-03 02:28:29 +02:00
Petr Viktorin e584cbff1e
bpo-36027 bpo-36974: Fix "incompatible pointer type" compiler warnings (GH-13758) 2019-06-03 01:08:14 +02:00
Mark Dickinson c52996785a
bpo-36027: Extend three-argument pow to negative second argument (GH-13266) 2019-06-02 10:24:06 +01:00
Jeroen Demeyer 530f506ac9 bpo-36974: tp_print -> tp_vectorcall_offset and tp_reserved -> tp_as_async (GH-13464)
Automatically replace
tp_print -> tp_vectorcall_offset
tp_compare -> tp_as_async
tp_reserved -> tp_as_async
2019-05-30 19:13:39 -07:00
Inada Naoki 7d408697a9
remove unnecessary tp_dealloc (GH-13647) 2019-05-29 17:23:27 +09:00
Serhiy Storchaka a5119e7d75
bpo-36957: Add _PyLong_Rshift() and _PyLong_Lshift(). (GH-13416) 2019-05-19 14:14:38 +03:00
Serhiy Storchaka 96aeaec647
bpo-36793: Remove unneeded __str__ definitions. (GH-13081)
Classes that define __str__ the same as __repr__ can
just inherit it from object.
2019-05-06 22:29:40 +03:00
stratakis a10d426bab bpo-36292: Mark unreachable code as such in long bitwise ops (GH-12333) 2019-03-18 18:59:20 +01:00
Serhiy Storchaka 6a44f6eef3
bpo-36048: Use __index__() instead of __int__() for implicit conversion if available. (GH-11952)
Deprecate using the __int__() method in implicit conversions of Python
numbers to C integers.
2019-02-25 17:57:58 +02:00
Sergey Fedoseev ea6207d593 bpo-36063: Minor performance tweak in long_divmod(). (GH-11915) 2019-02-21 12:01:11 +02:00
Victor Stinner 6d43f6f081
bpo-35713: Split _Py_InitializeCore into subfunctions (GH-11650)
* Split _Py_InitializeCore_impl() into subfunctions: add multiple pycore_init_xxx() functions
* Preliminary sys.stderr is now set earlier to get an usable
  sys.stderr ealier.
* Move code into _Py_Initialize_ReconfigureCore() to be able to call
  it from _Py_InitializeCore().
* Split _PyExc_Init(): create a new _PyBuiltins_AddExceptions()
  function.
* Call _PyExc_Init() earlier in _Py_InitializeCore_impl()
  and new_interpreter() to get working exceptions earlier.
* _Py_ReadyTypes() now returns _PyInitError rather than calling
  Py_FatalError().
* Misc code cleanup
2019-01-22 21:18:05 +01:00
Victor Stinner b509d52083
bpo-35059: PyObject_INIT() casts to PyObject* (GH-10674)
PyObject_INIT() and PyObject_INIT_VAR() now cast their first argument
to PyObject*, as done in Python 3.7.

Revert partially commit b4435e20a9.
2018-11-23 14:27:38 +01:00