Commit Graph

258 Commits

Author SHA1 Message Date
Christian Heimes fa26245a1c
bpo-45548: Remove _math.c workarounds for pre-C99 libm (GH-29179)
The :mod:`math` and :mod:`cmath` implementation now require a C99 compatible
``libm`` and no longer ship with workarounds for missing acosh, asinh,
expm1, and log1p functions.

The changeset also removes ``_math.c`` and moves the last remaining
workaround into ``_math.h``. This simplifies static builds with
``Modules/Setup`` and resolves symbol conflicts.

Co-authored-by: Mark Dickinson <mdickinson@enthought.com>
Co-authored-by: Brett Cannon <brett@python.org>
Signed-off-by: Christian Heimes <christian@python.org>
2021-10-25 01:25:27 -07:00
Christian Heimes 03e9f5dc75
bpo-43974: Move Py_BUILD_CORE_MODULE into module code (GH-29157)
setup.py no longer defines Py_BUILD_CORE_MODULE. Instead every
module defines the macro before #include "Python.h" unless
Py_BUILD_CORE_BUILTIN is already defined.

Py_BUILD_CORE_BUILTIN is defined for every module that is built by
Modules/Setup.

The PR also simplifies Modules/Setup. Makefile and makesetup
already define Py_BUILD_CORE_BUILTIN and include Modules/internal
for us.

Signed-off-by: Christian Heimes <christian@python.org>
2021-10-22 15:36:28 +02:00
Victor Stinner d943d19172
bpo-45439: Move _PyObject_CallNoArgs() to pycore_call.h (GH-28895)
* Move _PyObject_CallNoArgs() to pycore_call.h (internal C API).
* _ssl, _sqlite and _testcapi extensions now call the public
  PyObject_CallNoArgs() function, rather than _PyObject_CallNoArgs().
* _lsprof extension is now built with Py_BUILD_CORE_MODULE macro
  defined to get access to internal _PyObject_CallNoArgs().
2021-10-12 08:38:19 +02:00
Victor Stinner ce3489cfdb
bpo-45439: Rename _PyObject_CallNoArg() to _PyObject_CallNoArgs() (GH-28891)
Fix typo in the private _PyObject_CallNoArg() function name: rename
it to _PyObject_CallNoArgs() to be consistent with the public
function PyObject_CallNoArgs().
2021-10-12 00:42:23 +02:00
Pablo Galindo Salgado 84975146a7
bpo-35606: Fix math.prod tests using 'start' as keyword parameter (GH-28595) 2021-09-28 13:32:43 +01:00
Mark Dickinson 4a42cebf6d
bpo-44339: Fix math.pow corner case to comply with IEEE 754 (GH-26606)
Change the behaviour of `math.pow(0.0, -math.inf)` and `math.pow(-0.0, -math.inf)` to return positive infinity instead of raising `ValueError`. This makes `math.pow` consistent with the built-in `pow` (and the `**` operator) for this particular special case, and brings the `math.pow` special-case handling into compliance with IEEE 754.
2021-06-12 10:23:02 +01:00
Ajith Ramachandran ac867f10b4
bpo-44357:Add `math.cbrt()` function: Cube Root (GH-26622)
* Add math.cbrt() function: Cube Root

Co-authored-by: blurb-it[bot] <43283697+blurb-it[bot]@users.noreply.github.com>
Co-authored-by: Mark Dickinson <dickinsm@gmail.com>
2021-06-10 17:42:09 +01:00
Victor Stinner 3e7ee02327
bpo-42161: mathmodule.c: move _PyLong_GetOne() loop invariant (GH-26391)
Move _PyLong_GetZero() and _PyLong_GetOne() loop invariants outside
loops in functions:

* math.comb()
* math.gcd()
* math.lcm()
* math.perm()
2021-05-27 00:51:07 +02:00
Alperen Serkan Aksöz 09605ad726
missing multiply symbol in the documentation (GH-24686) 2021-03-03 14:59:52 +01:00
Victor Stinner 0837f99d33
bpo-42323: Fix math.nextafter() on AIX (GH-24381)
math_nextafter_impl() must return a Python object, not a C double.
2021-01-29 23:04:50 +01:00
Victor Stinner c1c3493fb7
bpo-42323: Fix math.nextafter() for NaN on AIX (GH-24265) 2021-01-20 15:20:13 +01:00
Victor Stinner 37834136d0
bpo-42161: Modules/ uses _PyLong_GetZero() and _PyLong_GetOne() (GH-22998)
Use _PyLong_GetZero() and _PyLong_GetOne() in Modules/ directory.

_cursesmodule.c and zoneinfo.c are now built with
Py_BUILD_CORE_MODULE macro defined.
2020-10-27 17:12:53 +01:00
Raymond Hettinger 497126f7ea
Update link to supporting references (GH-22488) 2020-10-01 19:30:54 -07:00
Raymond Hettinger 438e9fc66f
bpo-41513: Improve order of adding fractional values. Improve variable names. (GH-22368) 2020-09-22 20:01:12 -07:00
Raymond Hettinger ec8a15b034
Make fractional value accumulation consistent inside and outside the loop. (GH-22315) 2020-09-18 17:57:28 -07:00
Raymond Hettinger 457d4e97de
bpo-41513: Add docs and tests for hypot() (GH-22238) 2020-09-13 23:33:41 -07:00
Raymond Hettinger 67c998de24
bpo-41513: Expand comments and add references for a better understanding (GH-22123) 2020-09-06 15:10:07 -07:00
Raymond Hettinger 5b24d1592a
Improve hypot() accuracy with three separate accumulators (GH-22032) 2020-09-01 22:00:50 -07:00
Raymond Hettinger 92c38164a4
Further improve accuracy of math.hypot() (GH-22013) 2020-08-30 10:00:11 -07:00
Raymond Hettinger 27de28607a
bpo-41513: Save unnecessary steps in the hypot() calculation (#21994) 2020-08-29 09:11:04 -07:00
Raymond Hettinger 82e79480d6
Fix typos in comment (GH-21966) 2020-08-26 13:09:40 -07:00
Raymond Hettinger 8e19c8be87
bpo-41513: More accurate hypot() (GH-21916) 2020-08-24 17:40:08 -07:00
Raymond Hettinger fff3c28052
bpo-41513: Improve speed and accuracy of math.hypot() (GH-21803) 2020-08-15 19:38:19 -07:00
Raymond Hettinger 930f4518ae
On path with known exact float, extract the double with the fast macro. (GH-21072) 2020-06-23 11:45:25 -07:00
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
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
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
Dong-hee Na 5be8241392
bpo-1635741: Port math module to multiphase initialization (GH-19243) 2020-03-31 16:33:22 +02:00
Zackery Spytz 5208b4b379
bpo-39871: Fix possible SystemError in atan2, copysign and remainder (GH-18806)
In math_2(), the first PyFloat_AsDouble() call should be checked
for failure before the second call.

Co-authored-by: Mark Dickinson <dickinsm@gmail.com>
2020-03-14 10:45:32 +00:00
Serhiy Storchaka 559e7f165a
bpo-39648: Expand math.gcd() and math.lcm() to handle multiple arguments. (GH-18604)
* bpo-39648: Expand math.gcd() and math.lcm() to handle multiple arguments.

* Simplify fast path.

* Difine lcm() without arguments returning 1.

* Apply suggestions from code review

Co-Authored-By: Mark Dickinson <dickinsm@gmail.com>

Co-authored-by: Mark Dickinson <dickinsm@gmail.com>
2020-02-23 11:21:29 +00:00
ananthan-123 f2ee21d858
bpo-39479:Add math.lcm() function: Least Common Multiple (#18547)
* Update math.rst

* Update math.rst

* updated whats new

* Update test_math.py

* Update mathmodule.c

* Update mathmodule.c.h

* Update ACKS

* 📜🤖 Added by blurb_it.

* Update 3.9.rst

* Update 2020-02-18-12-37-16.bpo-39479.j3UcCq.rst

* Update math.rst

* Update 2020-02-18-12-37-16.bpo-39479.j3UcCq.rst

* Update test_math.py

* Update ACKS

* Update mathmodule.c.h

* Update mathmodule.c

* Update mathmodule.c.h

* Update mathmodule.c.h

Co-authored-by: blurb-it[bot] <43283697+blurb-it[bot]@users.noreply.github.com>
2020-02-19 18:21:37 +00:00
Victor Stinner e9e7d284c4
bpo-35081: Move dtoa.h header to the internal C API (GH-18489)
Move the dtoa.h header file to the internal C API as pycore_dtoa.h:
it only contains private functions (prefixed by "_Py").

The math and cmath modules must now be compiled with the
Py_BUILD_CORE macro defined.
2020-02-12 22:54:42 +01:00
Victor Stinner 85ead4fc62
bpo-39396: Fix math.nextafter(-0.0, +0.0) on AIX 7.1 (GH-18094)
Move also math.nextafter() on math.ulp() tests from IsCloseTests to
MathTests.
2020-01-21 11:14:10 +01:00
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 0b2ab21956
bpo-39310: Add math.ulp(x) (GH-17965)
Add math.ulp(): return the value of the least significant bit
of a float.
2020-01-13 12:44:35 +01:00
Victor Stinner 100fafcf20
bpo-39288: Add math.nextafter(x, y) (GH-17937)
Return the next floating-point value after x towards y.
2020-01-12 02:15:42 +01:00
Victor Stinner be143ec996
bpo-38835: Don't use PyFPE_START_PROTECT and PyFPE_END_PROTECT (GH-17231)
The PyFPE_START_PROTECT() and PyFPE_END_PROTECT() macros are empty:
they have been doing nothing for the last year  (since commit
735ae8d139), so stop using them.
2019-11-20 02:51:30 +01:00
Serhiy Storchaka 5fd5cb8d85
bpo-38639: Optimize floor(), ceil() and trunc() for floats. (GH-16991) 2019-11-16 18:00:57 +02:00
Raymond Hettinger 6b5f1b496f
bpo-37691: Let math.dist() accept sequences and iterables for coordinates (GH-14975) 2019-07-27 14:04:29 -07:00
Mark Dickinson 014847034b
Fix inconsequential typo in math.remainder algorithm comments. (#14746) 2019-07-13 16:50:03 +01:00
Giovanni Cappellotto dc3f99fa77 bpo-37548: Document range of atan, acos and asin (GH-14717) 2019-07-13 14:59:55 +01:00
Min ho Kim f7d72e48fb Fix some typos (GH-14435) 2019-07-05 14:39:32 -07:00
Serhiy Storchaka 231aad3849
bpo-37315: Deprecate accepting floats in math.factorial(). (GH-14147) 2019-06-17 16:57:27 +03:00
Mark Dickinson 2dfeaa9222
Turn math.isqrt assertion into a comment to clarify its purpose. (GH-14131) 2019-06-16 17:53:21 +01:00
Mark Dickinson 45e0411eee
Simplify negativity checks in math.comb and math.perm. (GH-13870) 2019-06-16 11:06:06 +01:00
Raymond Hettinger e119b3d136
bpo-37178: Allow a one argument form of math.perm() (GH-13905) 2019-06-08 08:58:11 -07:00
Raymond Hettinger 963eb0f473
bpo-35431: Drop the k <= n requirement (GH-13798) 2019-06-04 01:23:06 -07:00
Serhiy Storchaka 5ae299ac78
bpo-37128: Add math.perm(). (GH-13731) 2019-06-02 11:16:49 +03:00
Serhiy Storchaka 2b843ac0ae
bpo-35431: Refactor math.comb() implementation. (GH-13725)
* Fixed some bugs.
* Added support for index-likes objects.
* Improved error messages.
* Cleaned up and optimized the code.
* Added more tests.
2019-06-01 22:09:02 +03:00
Yash Aggarwal 4a686504eb bpo-35431: Implemented math.comb (GH-11414) 2019-06-01 00:21:27 -07:00